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HP 5890 Series II GC Service Manual (05890

1. p Coe eire E B ATT T pyu F HoE EE i e nea aT tas p L pill b EET FED face REE a a ar E J ath i Pl 2 L m MOUNTING HOLES MOUNTING HOLES Remove seven screws securing the main PCB to the electronics flow carrier Remove the main PCB from the instrument by carefully tipping it towards the right side of the instrument and then lifting it from its support brackets Position the replacement main PCB so its lower edge is within the support brackets then slide the board to its left or right as needed to align it with locater posts and holes for mounting screws Secure the board in place with the seven mounting screws Make sure the longest screw is installed in the hole marked MAIN GND atthe top of the board Install all connectors detector PCBs communications interface PCB if present EPC MPC in terface PCB if present and signal cables Restore all gas supplies to the instrument Install the right side panel and secure using four screws Install the electronics carrier top cover Restore power to the HP 5890 Series Il SVC 9 6 22 23 Observe the alphanumeri
2. SVC 6 20 Remove Replace NPD Heater and Sensor Cartridges SVC 6 24 Remove Replace ECD 19233A 19235A VERSIONS SVC 6 28 Heater and Sensor Cartridges Remove Replace ECD G1223A G1224A VERSIONS SVC 6 Heater and Sensor Cartridges Remove Replace FPD Heater and Sensor Cartridges SVC 6 Remove Replace Valve Box Heater and Sensor Cartridges SVC 6 Replacing TCD Delta T Temperature Sensor Cartridges SVC 6 Remove Replace PCOC Inlet Cryogenic Cooling Cryo Blast Weldmen VC 6 Temperature Sensor Data aua i ees SVC 6 SVC 6 2 Heated Zone Troubleshooting Problem Probable Cause Corrective Action Heater partially shorted to 1 Replace heater and sensor chassis grounded b Faulty main PCB 1 1 One heated zone tempera a ture runs away Replace main PCB refer to One heated zone will not heat None of the heated zones will heat but the oven is ok None of the heated zones will heat and the oven will not heat Heater partially shorted to chassis grounded Faulty main PCB Faulty F3 fuse on main PCB Faulty main PCB Faulty main PCB SVC 6 3 Section 9 Replace heater and sensor Replace main PCB refer to Section 9 Check main PCB fuse F3 replace if required Replace main PCB refer to Section 9 Replace main PCB refer to Section 9 Remove Replace Inlet Detector and Valve Box Heater Se
3. A 2 indicates the HP 5890A is the second device on the loop etc to a maximum value of 31 If cabling is altered or if one or more devices are powered off and then on again automatic loop configuration initiated by the controller updates the displayed value accordingly SETTING THE DEFAULT HP IL ADDRESS Remaining displays in Figure 13 6 show the process of defining a specific HP IL address for the HP 5890A Entry of any value from 0 through 31 is permitted An attempt to enter an invalid value results in the ADDRESS LI MI T message shown INET HP 5890A SIGNAL DEFINITION INET signal definition defined AT THE CONTROLLER may be verified at the HP 5890A To display the definitions enter ED GE GED or GED SVC 10 10 Figure 13 7 shows resulting displays INET HP 5890A Signal Definition ACTUAL SETPOINT Figure 13 7 INET Signal Definition Displays From the displays the following may be noted H HP 5890A signal channels are designated SI G 1 orSIG 2 H ON indicates the given signal channel is considered active by the controller data from this signal channel is transmitted to other devices onthe INET loop Note that ON in this context has the same meaning as shown in the HP 5890A portion of the INET configuration table in the HP 3392A work file listing Similarly OF F indicates the channel is considered inactive no data from this signal channel is trans
4. SVC 6 41 reversed peaks are experienced the most likely cause is reversed gas tubes connected to the TCD solenoid valve Remove Replace PCOC Inlet Cryogenic Cooling Cryo Blast Weldment WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD RED O VISIBLE IS CONNECTED AVOID A POTENTIALLY UN DANGEROUS SHOCK HAZARD BY j Z DISCONNECTING THE POWER CORD D BEFORE WORKING ON THE INSTRUMENT Set the main power line switch to the off position Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool FPF U N Be When the heated zones are cool turn off all gas supplies 5 Atthe bottom of the inlet s to be removed in side the column oven remove the column and hardware associated with the inlet s liner column liner nuts ferrules makeup gas adapt er etc back edge and lifting it upward PRESS 7 Remove the two screws securing the leftside AERE TO panel along its bottom edge 6 COVER 8 Slide the leftside panel towards the ne mi Ol rear of the instrument and lift Nn LEFT SIDE yy PANEL DZ N I Y AL eae AND WASHER SVC 6 42 11 Cap the base of the inlet inside the column oven 12 Remove the auto injection assembly or optional manual injection assembly by rotating it counter clockwise Be careful not to loose the septum insert or PCOC insert spring which are installed under the injecti
5. SVC 2 6 Install the column and associated hardware Carefully install the inlet into its inlet opening in the top of the instrument Replace any insulation that was removed from around the inlet Install the top cover over the inlet Secure the inlet to the top cover using two screws Secure the top cover and inlet to the instrument using two screws Bend the tubes running from the installed inlet to the inlet flow control components so that they lay within the U shaped channels to the left of the inlets Install the tubes removed in steps 9 and 10 Install the liner and all other hardware except the column removed in step 5 Loosen the two screws securing the bottom insulation cover inside the column oven BOTTOM INSULATION Rotate the bottom insulation cover to free it and cui cil the bottom insulation from the wall of the col COVER Re umn oven Inspect the insulation to ensure that itis in good condition Replace if required Install the bottom insulation and bottom insulation cover on the column oven wall Tighten the two screws securing the bottom insulation cover to the column oven wall p Remove the septum nut assembly from the top insert Q Y weldment SEPTUM NUT ta ASSEMBLY Inspect the septum to insure that itis properly co installed and in good condition Replace if required SEPTUN ERT Install the septum nut assembly Restore the
6. Secure the collector mount to the thermal strap using three screws Be certain that the interconnect spring contact to the detector PCB is in contact with the groove on the collector Tighten the screws which secure the interconnect clamps to the thermal strap Remove the cap from the base of the detector weldment inside the column oven Install the column and any other associated hardware removed in step 5 of this procedure SVC 4 26 59 60 61 62 63 64 65 66 67 68 69 Install the collector mount and collector assem bly as a unit DETECTOR PCB Secure the collector mount to the thermal strap NTERCONNECT using three screws COLLECTOR NUT Connect the ignitor wire lead connector at the COLLECTOR ee SPANNER mating connection adjacent to the ignitor NUT If it was necessary to remove the rear i COLLECTOR panel install it and secure using four MOUNT screws Install the left side panel and secure using two screws ess SSS oi Install the right side panel and secure THERMAL CLAMPS STRAP using four screws Install the electronics carrier top cover Install the hinged top cover and secure using a screw and washer Connect the ground strap to the hinged top cover using a screw Restore all gas supplies Restore power to the instrument SVC 4 27 NITROGEN PHOSPHORUS DETECTOR NPD Remove Replace NPD Active Element Power Transformer Toroid WARHIHG
7. 9 Disconnectthe Carrier Gas Inlet which con nects to a fitting either at the EFS a chemical filter or a mass flow controller mounted on the CARRIER flow panel GAS INLET Z 10 Inside the column oven cap the base of the PITUNG ac inlet Y SVC 2 2 11 12 13 14 15 16 17 19 18 19 20 Remove any insulation from around the top of the inlet Use a Pozidriv screwdriver to remove the two screws securing the inlet and insulation plate to the instrument Depending on the age of the instrument the insulation plate may be flat as shown at the left or may be a box as shown INSULATION below PLATE amp Lift the inlet enough to expose the heated block and heater sensor wiring Remove any insulation from around the base of the inlet CAUTION Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile Carefully slide the heater and sensor cartridges out of the heated block portion of the inlet Use caution to avoid sharp bends when bending tubing Sharp bends may crimp the tubing If the inlet is to be replaced prepare the replacement inlet by pre bending its tubing into orien tations similar to that of the removed inlet Slide the heater and sensor cartridges into the heated block of the inlet being installed Replace any insulation that was removed from around the base of the inlet Caref
8. B key becomes B in hexadecimal COL COMP 1 key becomes C in hexadecimal COL COMP2 key becomes D in hexadecimal ON key becomes E in hexadecimal OFF key becomes F in hexadecimal The Decimal Point key increments the address SVC 1 8 The Minus key decrements the address The ENTER key switches the type of value presentation The binary display mode can be entered from the hexadecimal mode by pressing _ If already in the binary mode it will return to the hexadecimal mode The binary mode is very similar to the hexadecimal mode except that the value of the address and only that value one byte is displayed in the binary code If the next value one byte in binary is desired simply increment the address which is always displayed in hexadecimal The incrementing and decre menting of addresses in the binary mode are done in the same manner as in the hexadecimal mode To leave this Display Memory routine press any of the instrument function keys This also reestablishes the normal key definitions Calib and Test Clear Dot 5 SelfTfest This instrument test is exactly the same as the one that occurs automatically at power turn on except it is entered whenever the operator decides It is initiated from the keyboard by pressing The first indica tion a user has that the instrument is working is when the unit tests its RAM Random Access Memory and the visual display portion of the front panel The entire visual display all pos
9. EET ASSEMBLED Slide the dial indicator onto the power control 1 CONNECTORS shaft LoL While holding the potentiometer shaft fully counter clockwise with a screwdriver adjust the dial indicator to read 000 SVC 4 39 22 23 24 25 26 While still holding the potentiometer shaft fully counterclockwise with a screwdriver use a 1 0 mm hex wrench to tighten the two hex screws around the outside of the brass collar Mount the control knob by pushing it on to the control shaft Install the right side panel and secure using four screws Install the electronics carrier top cover Restore power to the instrument SVC 4 40 Remove Replace NPD Detector Weldment WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT NITROGEN PHOSPHOROUS NPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS 1 Setthe main power line switch to the off position RED O VISIBLE 2 Disconnect the power cable from its receptacle IM a 3 Allow time for the oven and heated zones to cool S lt 4 When the heated zones are cool turn ofall gas q supplies 5 Atthe bottom of the detector s to be removed inside the column oven remove the column and hardware associated with the detector s line
10. Gas Sampling with Backflush of Precolumn to Vent Option 401 or 431 Column Gas Sampling with Backflush to Detector Option 402 or 432 SVC 7 22 o Sample 2 Detector or 2nd Valve Gas Sampling of Alternate Streams Option 403 or 433 Column 2 Gas Sampling with Sequence Reverse Option 404 or 434 Column 2 Detector or 2nd Valve Gas Sampling with Sequence Reverse and Backflush of Column 1 Option 405 or 435 SVC 7 23 Column 2 Column 1 Detector or 2nd Valve Column Selection with Backflush to Vent Option 406 or 436 Liquid Sampling Options 151 152 153 and 162 Column 2 Column 1 Adj Restr OFF Gas Sample and Column Isolation Option 601 SVC 7 24 Column 1 Column 2 Gas Sample Backflush and Column Isolation Option 602 SVC 7 25 Section 8 KEYBOARD AND DISPLAY KEYBOARD AND DISPLAY REPLACEMENT The keyboard and display components of the HP 5890 Series II are housed in a single display PCB as sembly Removal disassembly and installation instructions for the display PCB assembly are found on the following pages Refer to page XX of this section for information on troubleshooting the keyboard and display components Refer to Section 9 of the IPB for part numbers associated with the keyboard and display components Current maintenance philosophy suggests that the display PCB assembly be replaced as a unit rather then replacing the display PCB keyboard con
11. P which terminates at the splitless solenoid VENT valve normally closed fitting mounted inside the flow module Disconnect the Split Vent Outlet labelled S which terminates ata splitless solenoid valve normally open fitting mounted inside the flow module Remove any insulation from around the top of the inlet Detach and remove the insert assembly from the shell weldment using a inch wrench Detach and remove the tubing nut from the fit ting on the shell weldment Loosen the two screws securing the insulation cover inside the column oven Rotate the cover freeing it from its securing hardware and remove the cover and three pieces of lower insulation Remove the reducing nut flat washer and anealed seal using a 1 2 inch wrench Use a 3 4 inch wrench to loosen but not re move the retaining nut below the heated block Use a Pozidriv screwdriver to remove the two screws securing the inlet to the instrument Gently pull the inlet up and out of its instrument cavity Remove the retaining nut loosened in step 18 Slide the heated block off of the shell weld ment SVC 2 SHELL WECOMENT A INSERT lt ASSEMBLY Coe eS ea SS ES SEE OS SESE M JWER ISULATION RETA J NUT w FLA T WA REDUC NUT LOWER INSULATION COVER 13 23 24 25 26 27 28 30 31 32 33 34 35 36 37
12. Restore power to the instrument SVC 3 15 Remove Replace EPC MPC Pressure Control PCB WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME IONIZATION FID NITROGEN PHOSPHOROUS NPD AND FLAME PHOTOMETRIC FPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS 1 Setthe main power line switch to the off position RED O VISIBLE JUU 2 Disconnect the power cable from its receptacle lt 5 MN ae 0 3 Turn off all gas supplies 4 Remove the electronics carrier top cover 5 Remove the right side panel by removing four screws two each along its top and bottom edges B D E ff 20 ELECTRONICS CARRIER TOP COVER 20000 20000 LET ff 2 2 SCREWS RIGHT SIDE PANEL The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes or enclosures SVC 3 16 6 Disconnect any cables which are connected to the pressure control PCB
13. cece ce ete ee tee ete eee eenes Adjustable Restrictors 2 0 cece ete ees Gas Sample LOOPS sia i ra 0 ia e ia aa a a eens LIQUID SAMPLE VALVES LSVS nunana Troubleshooting and Maintenance aasa Chromatographic Symptoms sssusa Loss of Sensitivity or Excessive Drift 00 cece ee eee ee Loss of Peaks in Specific Areas ofthe Chromatogram Baseline Upsets cece tenet eens Extraneous PeakS cece cece tenet eee Locating Leaks ora aenieiai ev hea e Wee eee E RE eee Pressure Check ci sie ene riesia ina eed olathe se ol genet Valve Box Assembly Removal 0 00 cece eee eee eee Valve Actuator Alignment 0 000 c cette Valve Actuation of GC Controlled Valves 0 00 cee eee Valve Configuration Diagrams 0 cece eee SVC 7 1 INTRODUCTION The valves described in this manual are manufactured by VALCO Instruments Co Houston Texas As members of the W series product line they are known as minivalves The valve body is made of Nitron ic 60 with 1 16 inch fittings The W series valves are also known as the 18900F series These valves have better leakage resistance and a longer life expectancy An installed valve system is an integrated partofthe HP 5890 Series II Gas Chromatograph Proper instrument operation will prolong the life ofthe valve system Read all the accompanying information and avoid the following operational abuses 1 Exceeding the speci
14. HEATER SENSOR CABLE ASSEMBLY CAVITY SLEEVE SVC 5 25 21 22 23 c Remove the air deflector using a Pozidriv screwdriver to remove the screw securing the air deflector to the inlet weldment Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile d Carefully slide the heater and sensor cartridges out of the heated block portion of the inlet e Usea Pozidriv screwdriver to remove the two screws securing the inlet to the instrument f Lift the inlet enough to expose the heated block g Ifinstalled remove the cryo blast tube from the inlet weldment h Install the cryo blast weldment onto the inlet weldment i Secure the inlet to the instrument using two screws Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile j Carefully slide the heater and sensor cartridges into the heated block portion of the inlet k Install the air deflector and secure it to the weldment using one screw I Install the injection assembly septum PCOC insert spring and insert the injection assem bly secures the other items to the inlet weldment m Install the injection port cover Mount the new valve body on the mounting bracket and secure using two screws Mount the assembly on the oven wall in the same position as the one just removed Route
15. er of the instrument by removing four screws and sliding the cover off of the rear of the in strument If installed remove the PCOC fan cover to allow removal of the tubing attached to the detector weldment Trace the hydrogen and air inlet tubes at tached to the detector weldment to their appropriate connection at the flow manifold block exposed left side of the instrument The specific desti nations of the two tubes depends upon the function of each tube and upon whether the detector base is located in the A or B detec tor position d FLOW TUBE OUTLET at Rp Poa FITTING PLATE a ae SPANNER NUT THERMAL STRAP Disconnect the tubes by removing the tube outlet fitting plate from the manifold block When bending tubing do not make sharp bends which may crimp the tubing Prepare the replacement detector weldment by bending its tubes until they are oriented similar ly to those on the weldment just removed Position the replacement detector over the opening where itis to be installed SVC 4 24 37 38 39 40 41 42 43 44 45 46 Slide the heater and sensor cartridges into the heated block portion of the replacement detec tor weldment Position the replacement detector weldment in the detector opening Install the insulation around the detector weld ment Position the insulation plate over the installed insulation and align its mountin
16. Buffered INET Buffered INET RS 232 C HPIB RS 232 C DICE and analog input Communications Interface PCBs are optional and may not be installed in all instruments Specific part numbers are not given in this section For replacement part numbers refer to the Section 9 of the IPB Electronics This document is not meant to provide instruction for first time installation of any of the options dis cussed The add on sheets which accompany the various options exist for just this purpose and should be referenced when performing a first time installation TABLE OF CONTENTS COMMUNICATION INTERFACE COMPONENTS SVC 10 fl Replace Communications Interface PCB sic cinder ddad ea erena SVC 10 2 Replace Rear Panel Connector PCB and or Cable for DICE PCB SVC 10 INET CONFIGURATION aasssssssssssnnnnsnassnnnnnan SVC 10 ld Switching Between Global and Local uaaa SVC 10 A INET HP IL Adresses 3 ic da sircactl del cadets dedi ahaa ea ada Gs tle adc teande SVC 10 9 Verifying the HP 5890 Series II INET Address 0c cece cueeaas SVC 10 Setting the Default HP IL Address 0 ccc eects SVC lo 0 INET HP 5890 Signal Definition a1 4qacnrea hai ete ea tara Camaro gual SVC 10 10 HP L Loopback Test oss eisirean rait EN na i earn ia SVC 10 SVC 10 1 Replace Communications Interface PCB WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD RED O VISIBLE IS C
17. HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT NITROGEN PHOSPHOROUS NPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS NOTE A soldering iron is required for this procedure Letting it heat up while performing these first few steps will save some time from the overall procedure Set the main power line switch to the off position RED O VISIBLE Disconnect the power cable from its receptacle lt I ILL Jue BuuLe Allow time for the oven and heated zones to cool a 0 9 When the heated zones are cool turn offallgas I a E supplies 5 Liftthe hinged top cover at its front edge exposing the detector area 6 Remove the electronics carrier top cover by grasping it at the rear and lifting upwards until its catch releases then pulling it towards the rear of the instrument 7 Remove the right side panel by removing four screws two each along its upper and lower edges SCREWS or NR RIGHT SIDE g PANEL ELECTRONICS COVER CARRIER TOP COVER SCREWS l l 8 Use a Pozidriv screwdriver to remove the three screws securing the detector cover to the ther mal strap SVC 4 28 10 11 CAUTION When disconnecting a plug pull on the plug not on its wires Pul
18. INTEGRITY CHECK meric display as the in AT POWER ON strument performs an internal self diagnostic integrity check to en BTW CnecKs ie OVEN STATUS sure that the instrument Tni Pea shows the expected oe Po a TIME Ai TIME READY normal displays ACTUAL SETPOINT a a aee Aea E Test of display elements all alphanumeric and LED elements are lit ACTUAL SETPOINT CII MESON IMIEIMIOIRIYI eee OVEN STATUS run RAT INITIAL NOT TIME READY ACTUAL SETPOINT tat 5890A Self testing in TTIETSTTIVINIG SIMONA IPIAMTH progress r9 LEDs off except possibly NOT READY OVEN STATUS FI RuN RAT NAL INITIAL TIME NOT TIME READY ACTUAL SETPOINT Message indicating normal termination of diagnostic I TPIAISISTEID SJE LIF TEISITI tests after power restoration OVEN STATUS User setpoints remain in RAT TIME O RUN force INITIAL NOT LEDs off except possibly TIME READY NOT READY SVC 10 7 ee INET CONFIGURATION CAL B AND TEST function 3 The CONFI GURE NETWORK function provides four features verifying the INET address for the HP 5890A as determined through automatic loop configuration setting the default H P IL address to be used when the H P 5890A is connected to some device where addresses must be set manually i e no automatic loop configuration switching the INET function at the HP 5890A between global or loca
19. NUT A w FLA WA REDUC 9 NUT JWER ISULATION LOWER INSULATION COVER 23 24 25 26 27 28 30 31 32 33 34 35 36 37 38 CAUTION Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile Carefully slide the heater and sensor cartridges out of the heated block portion of the inlet HEATER SENSOR CAUTION CABLE ASSEMBLY Use caution to avoid sharp bends when bending tubing Sharp bends may crimp the tubing Remove any insulation from the shell weldment Remove the liner from the shell weldment If the inlet is to be replaced prepare the re placement inlet by pre bending its tubing into orientations similar to that of the removed inlet Install the liner in the shell weldment HEATED Install any removed insulation which wraps BLOCK around the tube in the shell weldment RETA Slide the heater and sensor cartridges into the NUT heated block of the inlet being installed Install the heated block onto the stem of the shell weldment Install the retaining nut on the base of the shell weldment securing the heated block to the shell weldment Install any removed insulation around the heated block within the cavity provided in the shell weldment Carefully install the inlet securing it to the instrument with two Pozidriv screws NOTE To lessen the possibility of
20. Restore power to the HP 5890 Series Il SVC 6 44 TEMPERATURE SENSOR DATA 2810 2500 R E S 2000 s gt A N c E 1500 0 1000 0 100 200 300 400 500 TEMPERATURE C TEMPERATURE SENSOR RESISTANCE VS TEMPERATURE To figure the approximate resistance of a temperature sensor use the following equation R 1000 35 t SVC 6 45 Section 7 VALVES This section is intended to help the technician isolate problems to a specific valve component or com ponents The HP 5890 Series Il may be found in many different configurations with varying component options This complicates the process of providing detailed troubleshooting procedures for even gener al problems But by using the general troubleshooting techniques presented here successful results should be achieved Specific part numbers are not given in this portion of the service manual For all replacement part num bers refer to the Section 7 of the IPB portion of this document This document is not meant to provide instruction for first time installation of any of the options dis cussed The add on sheets which accompany the various options exist for just this purpose and should be referenced when performing a first time installation TABLE OF CONTENTS VALVES ceauees ere sa acim Enaps eek whan INTRODUCTION ss icici aiina ined eke Shad bie caw ea doe VALCO VALVES 18900F 00 cece eect eee ens General Purpose Valves GPVS
21. free verify operation of the split splitless system by operating the solenoid valve via the keyboard SVC 3 10 Remove Replace Electronic Pressure Control EPC Components aa 200 10 11 12 WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME IONIZATION FID AND NITROGEN PHOSPHOROUS NPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS Set the main power line switch to the off position RED O VISIBLE uuu Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool When the heated zones are cool turn off all gas supplies Remove the two screws securing the left side panel along its bottom edge Slide the left side panel towards the rear of the instrument and lift Disconnect the tubing nut from the PCOC pro portional control valve Remove the plastic M8 nutsecuring the septum purge outlet from the inlet to the septum purge regulator Remove the two 7 mm nuts securing the EPC flow control bracket to the front of the instru ment Remove any hardware attached to the PCOC purge vent MOUNTING Loosen the two screws securing the proportion mee al control valve to the EPC flow control bracket Caref
22. the page corresponding to the employed detector while leaving the book open to the page corre sponding to the employed inlet Maintenance procedures for most of the components are given in the following sections Procedures are supplied to remove replace and or clean various subassemblies based on the current maintenance philosophy i e to allow replacement of the lowest level compo nents applicable for a particular item Specific part numbers are not given in this portion of the service manual For all replacement part num bers refer to the IPB portion of this document This document is not meant to provide instruction for first time installation of any of the options dis cussed The add on sheets which accompany the various options exist for just this purpose and should be referenced when performing a first time installation TABLE OF CONTENTS HP 5890 SERIES II GAS CHROMATOGRAPH Electronic Troubleshooting cece cece eee INTRODUCTION sgua cadarn ee binetd es ragana cies iwawearedawees Recommended Test Equipment 0 000 c cece eee eee PARTA NON FUNCTIONING INSTRUMENT 0 Fuse Information sadia dii nis weaned wea ea ae a Power On S Quence x congrg sieniin een iad duced EAE ou Paghen ee PARTB AUTOMONITOR MESSAGES 00 0c eee PART C OPERATOR INSTIGATED INDICATIONS Test Chromatogram Signal Output Test cece c eee eee eee PARTD FUNCTIONALSYM
23. weldment COOLING FLOW FAN B DIRECTION Trace the hydrogen and air inlet tubes at a lt S ARROW tached 1 amp to the detector weldment to their appropriate connection at the flow manifold block exposed left side of the instrument The specific desti nations of the two tubes depends upon the function of each tube and upon whether the detector base is located in the A or B detec tor position Disconnect the tubes by removing the tube outlet fitting plate from the manifold block IA FLOW en ae e i i o lol TUBE OUTLET Vp FITTING PLATE CAUTION JET When bending tubes do not make sharp P bends which may crimp the tubing BASE SPANNER NUT Prepare the replacement detector weldment by bending its tubes until they are oriented similar THERMAL STRAP ly to those on the weldment just removed Position the replacement detector over the opening where itis to be installed Slide the heater and sensor cartridges into the heated block portion of the replacement detec tor weldment Position the replacement detector weldment in the detector opening SVC 4 44 38 Install the insulation around the detector weld ment 39 Position the insulation plate over the installed insulation and align its mounting holes with those of the detector weldment 40 Secure the detector weldment and insulation plate to the instrument with two screws 41 Locate the U shaped slots on the instr
24. 10 DATA COMMUNICATIONS cceseceseveveeees SVC 10 1 COMMUNICATION INTERFACE COMPONENTS we cece eee eee SVC 10 1 Replace Communications Interface PCB nouu SVC 10 2 Replace Rear Panel Connector PCB and or Cable for DICE PCB eee ee eee SVC 10 5 INET CONFIGURATION icccceuieaded belay nas ernen dds E EEA peed ewes SVC 10 8 Switching Between Global and Local 0 cece eee eens SVC 10 8 INE THP ALA QrESSES ani a0 paiesi oraina nuie aE WROD Mende RGR MR SVC 10 9 Verifying the HP 5890 SeriesII INET Address ouuo SVC 10 10 Setting the Default HP IL Address cece ccc eeeeeneenees SVC 10 10 INET HP 5890 Signal Definition SVC 10 10 HP IL Loopback Tet in cdc cece eee pads LASER eae ens ened ee RES SVC 10 12 SECTION 11 POWER SUPPLY scciic ccvivsiecrie viaeieveessassas SVE 11 1 REPLACING POWER SUPPLY COMPONENTS ccc ee cece eee eens SVC 11 1 Remove Replace Power Supply PCB eee tenes SVC 11 2 Remove R eplace Power Supply Transformer cece eee eee eee SVC 11 5 Remove Replace Power Switch ccc ccc cece cere e eee eee e eee ee enn SVC 11 9 Remove R eplace Power Cable 2 ccc cee ee eee eee teens SVC 11 11 APPENDIX A PCB CONNECTOR INFORMATION APX A 1 AC POWER PCB CONNECTORS cece cece e eee eee nnn es APX A 3 T2O0VAC BOARD atni ices ste Seana austin dentadaisads Sede a EA TE als ERE E RR APXA 3 220VAC SINGLE PHASE BOARD nasca APXA 3 220VAC SPLIT P
25. 14 15 20 21 Remove the electronics carrier top cover above the signal cable plugs and receptacles to expose the top edge of the TCD detector PCB DELTA T SENSOR s CONNECTION LOCATION u ELECTRONICS CARRIER TOP COVER Disconnect the detector filament and delta t temperature sensor leads at their connector block on the detector PCB Use a small flat blade screwdriver to press each wire lead release located adjacentto each connec tion Remove the preformed thermal insulation from around the detector to expose the two screws securing the detector to the instrument main frame On a series connected TCD disconnect the TCD to FID jumper tube from the TCD oven re turn exhaust vent port Remove the two screws securing the detector to the instrument and then lift the block up enough to expose the heater and sensor car tridge wires DELTA T SENSOR Carefully slide the three cartridges out of the block The two smaller cartridges are the sen sors and must be handled gently in order to TEMPERATUR prevent breakage SENSOR Install the heater temperature sensor and replacement delta t sensor cartri heated block Carefully install the detector securing it to the instrument with two screws SVC 6 40 22 23 24 25 26 27 28 29 30 31 32 33 CAUTION When installing tubing at the solenoid valve ensure that all O rings are positioned
26. 22 P3 23 P3 24 P4 P4 1 P4 2 P4 3 P4 4 P4 5 P4 6 P4 7 P4 8 P4 9 P4 10 P4 11 P4 12 DETECTOR B PCB CONNECTOR 15V 15V 15V 15V STOPB 10V REF 3Q A3 OF U 16 2 STARTB A4 OF U 16 2 gnd gnd gnd gnd GND GND 153 6KHz 307 2KHz 24V 4Q 24V 4 9152MHz 5V 5V ANALOG SIGNAL 1 OUTPUT CONNECTOR RECORDER COMMON gnd gnd RECORDER1 INTEG1 GND AGROUND AGROUND GND INTEG1 RECORDER1 GND RECORDER COMMON gnd APPX A 7 P5 P5 1 P5 2 P5 3 P5 4 P5 5 P5 6 P5 7 P5 8 P5 9 P5 10 P5 11 P5 12 P6 P6 1 P6 2 P6 3 P6 4 P6 5 P6 6 P6 7 P6 8 P6 9 P6 10 P6 11 P6 12 ANALOG SIGNAL 2 OUTPUT CONNECTOR RECORDER COMMON GND RECORDER2 INTEG2 GND COMMON COMMON GND INTEG2 RECORDER2 GND RECORDER COMMON REMOTE START CONNECTOR REMOTE START INPUT GND REMOTE CONFIGURATION INPUT GND READY OUTPUT common for 6 amp 9 READY OUTPUT disconnects from 5 READY START OUTPUT contact closure pulsed closed for START OUTPUT 100msec to signal start of run READY OUTPUT connects with 5 READY START OUTPUT same as pins 7 amp 8 above GND REMOTE READY INPUT Relay contacts are rated at 3 Watts 0 25 Amp 28VDC maximum resistive load only 1 2 msec bounce Relay contacts are rated at 10 Watts 0 5 Amp 200VDC maximum resistive load only 0 4 msec bounce P7 P7 1 P7 2 P7 3 P7 4 P7 5 P7 6 P7 7 P7 8 P7 9 P7 10 P7 11 P7 12 P7 13 P
27. 38 CAUTION Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile Carefully slide the heater and sensor cartridges out of the heated block portion of the inlet HEATER SENSOR CAUTION CABLE ASSEMBLY Use caution to avoid sharp bends when bending tubing Sharp bends may crimp the tubing Remove any insulation from the shell weldment Remove the liner from the shell weldment If the inlet is to be replaced prepare the re placement inlet by pre bending its tubing into orientations similar to that of the removed inlet Install the liner in the shell weldment HEATED Install any removed insulation which wraps BLOCK around the tube in the shell weldment RETA Slide the heater and sensor cartridges into the NUT heated block of the inlet being installed Install install the heated block onto the stem of the shell weldment Install the retaining nut on the base of the shell weldment securing the heated block to the shell weldment Install any removed insulation around the heated block within the cavity provided in the shell weldment Carefully install the inlet securing it to the instrument with two Pozidriv screws NOTE To lessen the possibility of pressure leaks always install a new anealed seal when the old seal has been removed Tighten the retaining nut at the base of the shell weldment Install the reducing nut f
28. Atthe bottom of the detector to be removed inside the column oven remove the column and hardware associated with the detector s liner column liner nuts ferrules makeup gas adapter etc lt 0 aq vf INJ ECTION PORT COVER o 7 0 PRESS HERE TO FREE COVER 6 Remove the injection port cover by grasping its back edge and lifting it upward 7 Liftthe hinged top cover atits front edge exposing the detector area 8 Remove the 1 4 inch screw and washer securing the cover at its right side hinge point 9 Atthe lower right edge of the cover press from right to left until the right side hinge releases 1 4 INCH SCREW AND WASHER X LID SHAFT SVC 4 53 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Remove the screw securing the ground strap to the hinged top cover With the lower right side of the cover pushed in lift the right side of the cover and slide itto the right to remove the top cover and lid shaft as a unit Using a Pozidriv screwdriver remove the screw securing the detector top cover to the thermal strap Remove the detector top cover Disconnect any tubing attached to the detector purge and vent tubes Disconnect the cell anode lead from the PCB interconnect Loosen the locking screw on the ECD cover Slide the locking tab on the ECD cover back ECD COVER freeing the cover from the anode shaft of the cell
29. B is again displayed followed by the observed flow rate and a new GAIN calibration value based upon the measured flow rate NOTE The displayed flow rate value should now be quite close to the measured flow rate value If not drift may have occurred If drift occurs the process should be repeated 7 This completes EFS calibration Remove the flow measuring adapter connect the channel OUT fittings use two wrenches in opposition to avoid twisting tubes replace the left side pan el and restore the instrument to service Entering Specific ZERO and GAIN Values Calibration values for ZERO and GAIN should be recorded when a particular channel is calibrated They can then be reentered through the keyboard if necessary without repeating the entire calibration procedure To enter specific ZERO and GAIN calibration values 1 Select CALIB AND TEST mode function 2 EDM MG GAIN A or GAIN B is displayed followed by two values the observed flow rate through the channel and the current GAIN calibration value for the channel NOTE Note that Channel A is assumed by default If Channel B is to be calibrated instead press 2 Enter the desired GAIN calibration value preceded by Q em m C_ is necessary to signify entry of a GAIN calibration value rather than a measured flow rate 3 Press FLOW A ZERO is displayed followed by a value the current ZERO calibration value for EFS Channel A Note that Channel A is assume
30. Clean Anode ECD Cell Weldment G1223A G1224A Versions FLAME PHOTOMETRIC DETECTOR FPD SVC 4 Clean Replace Photomultiplier Tube PMT 00 00 eee eee SVC 4 58 Clean Replace FPD Filter u un nunnana arrr rnrn rraren SVC 4 61 Remove Replace FPD Diode Bridge Assembly c ce eaeaes SVC 4 63 Clean Replace FPD Heat Shield Windows 000 ee eee SVC 4 66 Replace FPD J et Assembly and First Heat Shield Window SVC 4 Z0 Replace Fused Silica Liner 0 ccc cece cece cent eee ee ee nenes SVC 4 Z6 Replace Detector Base Weldment 0c cece tees SVC 4 80 Adjust High VONAGE 54g deere big einas erarnan urrean rreran SVC 4 REPLACING A DETECTOR PCB cceeeeeeeeeees SVC 4 87 Remove Replace Detector PCB vs c s sees tetas tew kev aens we vended SVC 4 SVC 4 2 Detector Troubleshooting Problem 1 No signal output to exter nal data handling device i e integrator etc Strange chromatograph output Test chromato gram is ok Strange chromatograph output Test chromato gram is notok Instrument has two detec tors installed but only rec ognizes one FID will not ignite Probable Cause a Improper keyboard or ex ternal device operation or improper cabling Faulty detector PCB Faulty main PCB Faulty signal cable Faulty detector PCB Faulty main PCB Improper operation Faulty ignitor switch on f
31. Ensure that there is no debris in the detector weldment CAUTION The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When handling PCBs Printed Circuit Boards always place them in static control envelopes Install the FID detector PCB by sliding it into its CLAMPS mounting location on the main PCB at the right side of the instrument Installation of the PCB will insert the interconnect into the thermal strap Use caution to avoid damaging the spring at the end of the interconnect Tighten the screws on the clamps which secure the interconnect to the thermal strap Secure the collector mount to the thermal strap using three screws Be certain that the interconnect spring contact to the detector PCB is in contact with the groove on the collector Tighten the screws which secure the interconnect clamps to the thermal strap Remove the cap from the base of the detector weldment inside the column oven SVC 6 22 36 37 38 39 40 41 42 43 44 45 46 47 Install the column and any other associated hardware removed in step 2 ofthis procedure Install the collector mount and collector assem bly as a unit Secure the collector mount to the thermal stra using three screws Connect
32. FINAL pwn TIME shows the expected iita NOT i normal displays TIME READY Test of display elements all alphanumeric and LED elements are lit STATUS ACTUAL SETPOINT ITIEIS TII INIG IMIEIMIOIR YI OVEN STATUS run RAT INITIAL NOT TIME READY 5890 Series II memory test in progress ACTUAL SETPOINT 5890A Self testing in progress MTIEISITIIINIGI IS I GINJAIL PIAITIH LEDs off except possibly OVEN STATUS NOT READY ow T jal O amh RAT NOT INITIAL TIME READY ACTUAL SETPOINT Message indicating normal termination of diagnostic I IPIAISISJE D SJE LIF TEISITI tests after power restoration OVEN STATUS User setpoints remain in oo T TIME RUN force INITIAL NOT LEDs off except possibly TIME keny NOT READY SVC 8 5 Section 9 MAIN PCB Specific part numbers are not given in this section For replacement part numbers refer to the Section 9 of the IPB Electronics TABLE OF CONTENTS MAIN PCB sssitanicens dave caetpsisonan iss tant cena Replace Main PCB 0 cece ee ete SVC 9 1 Replace Main PCB WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT NPD AND FID DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SO
33. HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS 1 Setthe main power line switch to the off position RED O VISIBLE 1 UULU 2 Disconnect the power cable from its receptacle lt 5 MN IN 3 Turn off the hydrogen air or oxygen and aux iliary gas supply to the detector by means of the manifold on off valves 4 Allow time for the detector module to cool 5 Remove the thumb screw holding the detector cover to the top of the HP 5890 6 Facing the instrument rotate the detector cover to your right until the tab on the bottom left edge of the cover comes free 7 Raise the back of the cover and slide it towards the rear of the instrument SVC 4 61 10 11 12 13 14 15 16 Remove the extension spring holding the PMT assembly to the support bracket Remove the PMT assembly by pulling ittoward the rear of the instrument Remove the sulphur filter from the flange adapter If the filter is not going to be replaced wipe it clean using a lint free lens tissue Be careful not to scratch the surface of the filter If necessary clean the filter with a solution of soft soap and warm water Rinse with distilled water SULPHUR FILTER y PMT ASSEMBLY CHIMNEY AND BRACKETRY REMOVED FOR CLARITY Replace the filter if there is any evidence of chips scratches or cracks in its surface area Install the cleaned new filter in the flange
34. OVEN FAN MOTOR NEUTRAL OVEN FAN MOTOR PHASE 1 OVEN FAN MOTOR PHASE 1 220VAC SPLIT PHASE BOARD P1 P2 P3 P4 P5 LINE CORD PHASE 2 LINE CORD PHASE 1 OVEN HEATER PHASE 2 oven triac controlled OVEN HEATER PHASE 1 OVEN TRIAC ANODE 1 OVEN TRIAC ANODE 2 OVEN TRIAC GATE GND OVEN CONTROL to pulse transformer and oven triac gate K1 OVEN CONTACTOR CONTROL MAIN POWER SWITCH PHASE 1 NC MAIN POWER SWITCH PHASE 2 OVEN FAN MOTOR PHASE 2 OVEN FAN MOTOR PHASE 2 OVEN FAN MOTOR PHASE 1 OVEN FAN MOTOR PHASE 1 APPX A 4 MAIN PCB CONNECTORS Pl P1 1 P1 2 P1 3 P1 4 P1 5 P1 6 P1 7 P1 8 P1 9 P1 10 P1 11 P1 12 P1 13 P1 14 P1 15 P1 16 P1 17 P1 18 P1 19 P1 20 P1 21 P1 22 P1 23 P1 24 P1 25 P1 26 KEYBOARD CONNECTOR GND 24V 15V GND 614 4KHz GND BAG GND 38 4KHz 38 4KHz POP 15V 5V 5V 24V EXT_IN1 EXT_OUT9 EXT_OUT10 BDO BD1 BD2 BD3 BD4 BD5 BD6 BD7 APPX A 5 P2 DETECTOR A PCB CONNECTOR P2 1 15V P2 2 15V P2 3 15V P2 4 15V P2 5 STOPA P2 6 10V REF P2 7 1Q P2 8 Al OF U16 2 P2 9 STARTA P2 10 A2 OF U16 2 P2 11 gnd P2 12 gnd P2 13 gnd P2 14 gnd P2 15 GND P2 16 GND P2 17 153 6KHz P2 18 307 4KHz P2 19 24V P2 20 2Q P2 21 24V P2 22 4 9152MHz P2 23 5V P2 24 5V APPX A 6 P3 P3 1 P3 2 P3 3 P3 4 P3 5 P3 6 P3 7 P3 8 P3 9 P3 10 P3 11 P3 12 P3 13 P3 14 P3 15 P3 16 P3 17 P3 18 P3 19 P3 20 P3 21 P3
35. P1 1 15VDC P1 2 5VDC P1 3 ACOM P1 4 P_SNS pressure sensing EPC PROPORTIONAL CONTROL VALVE pin 1 VLV DR proportional valve control pin 2 SHEILD pin 3 15VDC APPX A 16 MPC PCB J1 1 BDO J1 2 BD1 J1 3 BD2 J1 4 BD3 J1 5 BD4 J1 6 BD5 J1 7 BD6 J 1 8 BD7 J1 9 EXT OUT3 Decode to give J 1 10 A 5 addresses 3 35 67 99 J 1 11 A 6 for Input or Output J 1 12 EXT_IN3 J 1 13 5V J 1 14 5V j1 15 DGND for digital circuits J 1 16 DGND for digital circuits J1 17 D240 240 Hz square wave J 1 18 POP power on pulse J 1 19 SGND for switching or analog circuits J 1 20 SGND for switching or analog circuits J1 21 24V J 1 22 24V J 1 23 24VDC J 1 24 24VDC APPX A 17 RS232C PCB CONNECTORS 12 1 BDO 12 2 BD1 12 3 BD2 12 4 BD3 12 5 BD4 12 6 BD5 12 7 BD6 12 8 BD7 12 9 GND J J J J J J J J J J12 10 EXT_IN2 ji2di EXT_OUT2 J 12 12 EXT OUTO J 12 13 EXT_OUT1 J 12 14 EXT_OUT8 J12 15 5V J12 16 5V J 12 17 9 8304MHz J J J J J J J J J J J J J 12 18 GND 12 19 GND 12 20 GND 12 21 GND 12 22 GND 12 23 D240 240 Hz square wave 12 24 POP power on pulse 12 25 15V 12 26 15V 12 27 10VREF 12 28 COMMON 12 29 DAC2 12 30 ATTN2 13 10 TXD TRANSMIT DATA 13 11 RXD RECEIVE DATA 13 12 GND J 13 1 GND J 13 2 RXD RECEIVE DATA J 13 3 TXD TRANSMIT DATA J 13 4 GND J 1
36. POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY FOLLOWING ALL REQUIRED SAFETY PROCEDURES WHEN WORKING ON THE INSTRUMENT The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes or enclosures 3 The FPD detector board is located in the B detector board slot On the board locate the high voltage adjustment and the high voltage reference HV REF test point TP7 SVC 4 85 Connect a voltmeter between ground TP1 on the detector PCB or the aluminum oven top and the HV reference test point TP7 Set the voltage at an optimum point This point should be somewhere between 750 and 850 V dc Voltage setting should never ex ceed 950 Vdc Perform a verification analysis Reset the voltage and perform another analysis Continue this sequence until the maximum sensitivity is attained greatest area counts for a given amount of sample injected divided by noise SIGNAL CABLE 3971104 HDIH YSN Install the right side panel and secure using four screws Install the electronics carrier top cover SVC 4 86 HIGH VOLTAGE ADJ USTMENT REPLACING A DETECTOR PCB Remov
37. Programmable Cool On Column capillary PCOC Maintenance procedures for all the inlets are given in the following pages Procedures are supplied to remove replace and or clean various subassemblies based on the current maintenance philosophy i e to allow replacement of the lowest level components applicable for a particular inlet Specific part numbers are not given in this section For all replacement part numbers refer to Section 5 of the IPB portion of this document Inlet Components All of the inlets are heated using a heater sensor setup which consists of at least one heater cartridge and one sensor cartridge Heating of the inlet zones is not covered in this section For information on the zone heater sensor systems refer to Section 6 of the service portion of this document Zone Tem perature This document is not meant to provide instruction for first time installation of the inlet options discussed Add on sheets exist for just this purpose and should be referenced when performing a first time instal lation TABLE OF CONTENTS REPLACING INLET COMPONENTS ccceeeeeueeeas SVC 2 hl PACKED COLUMN INLET assssssasssnnnnssssssnaaaa SVC 2 2 Remove Replace Packed Column Inlet anaana SVC 2 SEPTUM PURGED PACKED COLUMN INLET SVC 2 5 Remove Replace Septum Purged Packed Column Inlet SVC 2 SPLIT ONLY CAPILLARY INLET 0c0seeeeeeaeees SVC 2 lal Remove Replace Split Only Capillary Inlet nn
38. Remove R eplace TCD Heater and Sensor Cartridges 0 cece eee eee SVC 6 18 Remove Replace FID Heater and Sensor Cartridges cece cece ee eee SVC 6 20 Remove R eplace NPD Heater and Sensor Cartridges cece e eee eee eee SVC 6 24 Remove R eplace ECD 19233A 19235A VERSIONS cece eee eee SVC 6 28 H eater and Sensor Cartridges Remove R eplace ECD G1223A G1224A VERSIONS cece ee eee eee SVC 6 31 H eater and Sensor Cartridges Remove R eplace FPD Heater and Sensor Cartridges cece cece eee eee SVC 6 34 Remove R eplace Valve Box Heater and Sensor Cartridges 1 cece eee eee SVC 6 37 Replacing TCD Delta T Temperature Sensor Cartridges cc cece ee eee SVC 6 39 Remove R eplace PCOC Inlet Cryogenic Cooling Cryo Blast Weldment SVC 6 42 Temperature SensorData sscririiresener eepisrid bebe nee ee diredi Ree eee eed SVC 6 45 SECTION 7 VALVES iiceectessctsaeetineeis iiaeien seats esas SVE 7 1 VALVES ccuiade contd onsen tei ter oied Gee hea bree tamed so banded AE wed oe SVC 7 1 INTRODUCTION cecidte dp hide ty aad ape ted ch ad arate ced rays Renan dla TE haere Ste bow aed N SVC 7 2 VALCO VALVES 18900F weccs pip dus wetness eauret LoS este dane eho ye ES SVC 7 2 General Purpose ValveS GPVS 0 cc cece ccc teeter nee e eens SVC 7 4 Adjustable RestrictOls iccscacgae dade ved cath ietsled sees piddani ked cee iiia SVC 7 5 G aS Sample LOOPS sas icand epret tineia EEEE oom
39. SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT 1 Setthe main power line switch to the off position RED O VISIBLE 2 Disconnectthe power cable from its receptacle IM Ae ANN o NOTE If an autosampler is installed the injection port cover will not be present 3 Remove the injection port cover by grasping its back edge and lifting it upward 4 Ifan autosampler is installed on the instrument it will be necessary to remove it and its mount ing bracket to allow removal of the left side cov er as follows a Remove the autosampler tray from its mounting bracket by first simultaneous ly lifting and turning the two tray locks which hold it in position then sliding the tray away from the instrument INJ ECTION PORT COVER TOP COVER b Lift the autosampler tray from its mount ing bracket and set it aside c Remove the autosampler bracket by removing the 6 screws securing it to the instrument ta FREE COVER 1 4 INCH DAN SCREW JXL AND WASHER NNS SS SVC 2 20 10 Remove the electronics carrier top cover Remove the right side panel by BERENS removing four screws two each SD along its top and bottom edges SS fas Remove the back cover of the ELECTRONICS instrument by removing four CARRIER TOP screws and sliding the cover COVER SCREWS off of the rear of the instrument Remove the PCOC fan cover by RIGHT SIDE RANEL removin
40. STATUS Run NOT READY ACTUAL SETPOINT ITIEIS TII INIG IMIEIMIOIR YI OVEN RAT INITIAL TIME TIEISTII INIG IS IiIGINTATC TPIA TIH OVEN INITIAL TIME FINAL TIME Fl NAL TIME STATUS run NOT READY ACTUAL SETPOINT STATUS RUN NOT READY ACTUAL SETPOINT PPHAISISTE D IS EICIF TEISITI OVEN INITIAL TIME SVC 10 4 FINAL TIME STATUS RUN NOT READY Test of display elements all alphanumeric and LED elements are lit 5890 Series Il memory test in progress 5890A Self testing in progress LEDs off except possibly NOT READY Message indicating normal termination of diagnostic tests after power restoration User setpoints remain in force LEDs off except possibly NOT READY Replace Rear Panel Connector PCB and or Cable for DICE PCB WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD RED O VISIBLE IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT Set the main power line switch to the off position Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool e WN e When the heated zones are cool turn off all gas supplies 5 Ifthe rear panel connector PCB ribbon cable is to be replaced remove the electronics carrier top cover by grasping it att
41. The tool EXTRACTION TOOL features a lance release tip and a lance reset LANCE RESET pai tip The lance release tip is used to depress the pin locking lance to extract the pin from a connector The lance reset tip positions a lock ing lance to its proper height to ensure reten tion of the pin in the connector CANCE DASH NUMBER RESET TIP MARKED HERE TOOL STOP LANCE RELEASE a TIP INSERT TIP LOCKING HERE LANCE BACK OF CAVITY BACK OF CONTACT HOUSING TYPICAL TAPER LOCKING 18 From inside the oven draw the sensor leads Reece LANCE through the opening in the rear of the oven 19 Prepare the pins corresponding to the sensor cartridge of the replacement shroud by adjust ing their locking lances using the lance reset portion of the tool RECEPTACLE 20 Feed the sensor cartridge pins through the BOX TYPICAL opening in the oven and ready them for installa LOCKING nae LANCE tion into the main board connector shell CAVITY 21 Insert the pins for the replacement sensor into their appropriate locations in the plug making sure the locking lance on each pin seats into its hole through the side of the plug 22 Gently pull on the wire to ensure that the pin is TYPICAL locked in the connector BACK OF HOUSING SVC 5 5 23 24 25 26 27 28 29 30 31 32 Insert connector P7 into its corresponding receptacle on the main PCB Route the heater leads from the replacement shrou
42. WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT 1 Set the main power line switch to the off position RED O VISIBLE 2 Disconnect the power cable from its receptacle 3 Remove the thumb screw holding the detector cover to the top of the HP 5890 4 Facing the instrument rotate the detector cover to your right until the tab on the bottom left edge of the cover comes free 5 Raise the back of the cover and slide it towards the rear of the instrument SVC 4 58 10 11 12 13 Remove the spring securing the PMT assembly to its support bracket Cut the cable tie securing the resistor network cable assembly to the PMT assembly tube body Holding the tube body unscrew the end cap counter clockwise until the threads disengage Grasp the resistor network cable assembly and pull it along with the end cap and PMT out of the tube body PMT ASSEMBLY TUBE BODY PHOTO MULTIPLIER CHIMNEY AND BRACKETRY TUBE PMT REMOVED FOR CLARITY O RING ie RESISTOR NETWORK CABLE ASSEMBLY If the PMT is not to be replaced clean the window of the tube with a lint free lens tissue and proceed to step 15 If necessary clean the window with a solution of soft soap and warm wa ter Rinse with distilled water Replace the PMT if there is any evidence of chips scratches or cracks in its window surface area A da
43. adapter If the filter is silvered on one side the sil vered side must face toward the flame Ifthe filter has a indicator arrow on its edge gt the ar row must point towards the PMT Slide the PMT tube assembly onto the detector assembly Secure the PMT assembly to its support bracket using the extension spring Install the FPD cover on the instrument and secure using a thumbscrew Restore power to the instrument SVC 4 62 Remove Replace FPD Diode Bridge Assembly WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT 1 Set the main power line switch to the off position RED O VISIBLE lt I 2 Disconnect the power cable from its receptacle 3 Remove the thumb screw holding the detector cover to the top of the HP 5890 4 Facing the instrument rotate the detector cover to your right until the tab on the bottom left edge of the cover comes free 5 Raise the back of the cover and slide it towards the rear of the instrument 6 Ifan autosampler is installed on the instrument it will be necessary to remove it and its mount ing bracket to allow removal of the left side cover as follows a Remove the autosampler tray from its mounting bracket by first simultaneously lifting and turning the two tray locks which hold it in position then sliding the tray
44. and remove the rear panel PCB cable from the connector on the communications PCB by releasing the locking tabs one on either side of the connector receptacle and pulling the cable straight out Ifan RS 232 C communications PCB is installed a different cable is used to connect the PCB to the RS 232 C port of the connected device Remove the 12 pin connector from the com munications PCB The cable is installed through the opening where the INET cables are usual ly connected If an analog input communications PCB in installed remove the cable connected to at the top of the PCB Remove the communications PCB by grasping it in the center area along its right edge and pulling it from its connector on the main PCB COMMUNICATIONS INTERFACE PCB TYPICAL SVC 10 3 12 13 14 15 16 17 18 Install the replacement PCB by inserting it straight into its connector on the main PCB Connectthe cable s removed during steps 7 through 10 Install the right side panel and secure using four screws Install the electronics carrier top cover Restore all gas supplies Restore power to the instrument Observe the alphanu meric display as the in strument performs an internal self diagnostic integrity check to en sure that the instrument shows the expected normal displays NORMAL INTEGRITY CHECK AT POWER ON ACTUAL SETPOINT a PE Ee ee OVEN RAT INITIAL TIME FINAL TIME
45. bracket as a unit by removing the two screws securing the solenoid valve bracket to the instrument 14 Remove the solenoid valve body from the bracket by removing the two screws securing it to the mounting bracket SOLENOID VALVE 15 Route the leads for the new solenoid valve SSE along the same path as the leads of the sole NSS noid valve just removed SUPPORT BRACKET 16 Insert the connector for the leads of the new solenoid valve into receptacle J 24 by pressing it straight in until it bottoms SVC 4 9 17 18 19 20 21 22 23 24 25 Install the new solenoid valve body on the mounting bracket in the same location and position as the old one Secure the solenoid valve bracket to the instrument using two screws CAUTION Use caution when removing and installing the plastic M8 tubing nuts Excessive force can damage them NOTE When installing tubing at the solenoid valve ensure that all O rings are positioned properly the solenoid switching valve finger tight En sure that the tubing is installed at their proper fittings on the TCD solenoid valve as noted during removal Restore the gas supply to the system and check for leaks at all installed fittings If the system is leak free install the right side OE panel and secure using four screws SUPPORT BRACKET Install the electronics carrier top cover Ensure that all gas supplies are on and all connect
46. cable from its receptacle 3 Turn off the hydrogen air or oxygen and aux iliary nitrogen supplies to the detector at the flow control panel 4 Allow time for the heated zones to cool 5 Remove the thumb screw holding the detector cover to the top of the HP 5890 6 Facing the instrument rotate the detector cover to your right until the tab on the bottom left edge of the cover comes free 7 Raise the back of the cover and slide it towards the rear of the instrument 8 Liftthe detector top cover to expose the FPD detector weldment 9 Release the extension spring securing the PMT assembly to its support bracket SVC 4 80 10 Remove the photomultiplier tube PMT assembly and sulphur filter from the detector assembly 11 12 13 15 16 17 18 and set A SULPHUR FILTER CHIMNEY AND BRACKETRY REMOVED FOR CLARITY Remove the drip tube from the exhaust tube at the top of the detector Remove the exhaust tube from the detector using a 9 16 inch wrench Remove the chimney assembly by removing the two screws securing itto the chimney back Loosen the three screws which secure the clamp which secure the detector to the chim ney back Use a 9 16 inch wrench to loosen the nut hold ing the weldment exit tube to the jet assembly It will be necessary to hold the jet assembly with a 1 2 inch wrench to prevent rotation Pull the heater and sensor from the detector w
47. carrier top cover Install the hinged top cover and secure using a screw and washer Connect the ground strap to the hinged top cover using a screw Restore all gas supplies Restore power to the instrument SVC 4 47 ELECTRON CAPTURE DETECTOR ECD The ECD consists of two parts the detector cell and a heated block UNDER NO CONDITION IS THE ECD CELL TO BE DISASSEMBLED It will simply be exchanged for a new one This does not require the detector heated block to be removed from the mainframe There are two types of ECD detectors which may be installed in an HP 5890 Series Il The older version shown below on the left is referred to as the 19233A 19235A variety The newer version Shown to the right of the 19233A 19235A version is referred to as the G1223A G1224A variety Instructions for disassembly and maintenance are given for both versions of the ECD detector WARHING ALL VERSIONS OF ECD DETECTOR WELDMENTS CELLS CONTAIN RADIOACTIVE MATERIAL EXPOSURE TO RADIOACTIVE MATERIAL IS HAZARDOUS TO HUMAN HEALTH UNDER NO CIRCUMSTANCES SHOULD AN ECD DETECTOR WELDMENT BE DISASSEMBLED ECD DETECTOR WELDMENTS SHOULD BE EXCHANGED FOR NEW ONES SVC 4 48 ELECTRON CAPTURE DETECTOR ECD 19233A 19235A VERSIONS Remove Replace ECD Cells Weldment and or Heated Block 19233A 19235A Versions HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING TH
48. does show up try to pinpoint the source using a soap bubble meter Do not assume that the leak exists only at the valve Often plumbing connections such as unions or bulkhead fittings are at fault See Valve Box Top Assembly Removal in this section should it become necessary to expose the valve system 7 Ifthe leak cannot be found easily divide the system in half and repeat the pressure check Continue dividing by halves and pressure check until the leak is isolated SVC 7 14 Valve Box Assembly Removal 1 10 11 Place the main power switch in the off position WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT Unplug the line power cord from its receptacle Allow some time for the oven and heated zones to cool When the oven has cooled turn off all gas supplies Switch the solenoid valve off so the actuator is in its fully extended position Figure 2 29 Place the main power switch in its OFF position Disconnect the line power cord from its re ceptacle Remove the back panel and allow sufficient time for the oven and heated zones to cool then turn off supply gases and the air supply to the solenoids at their sources If variable restrictors are present remove their mounting hardware in the following order two M4 screws hex nut and mounting bracket for
49. each restrictor valve Remove two valve box top assembly mounting screws one located near the left front corner and one along the right side edge near the middle Lift the valve box top assembly straight off the valve box Be careful not to move the valve rotor index pin from its at rest position NOTE If valve actuator alignment is to be made see Valve Actuator Alignment in this section but do not perform steps 9 through 11 To reassemble Align the two mounting holes in the valve box top assembly with the standoffs in the valve box Lower the box top assembly until it rests on the standoffs Secure the valve box top assembly with two M4 mounting screws Tighten these screws firmly Reinstall hardware for variable restrictors if present Exercise the valve s on and off a few times to verify operation SVC 7 15 Valve Actuator Alignment 1 N Remove the valve box top assembly See steps 1 through 3 Valve Box Top Assembly Remov al Loosen the actuator link arm lock screw at each actuator Figure 2 29 with a 3mm hex key wrench so thatthe coupling shaft assembly is free to rotate Push the coupling shaft fully into the actuator Turn the valve rotor index pin of each valve counterclockwise CCW until itis 0 010 inch 0 25 mm from the counterclockwise left hand valve stop Figure 2 31 Set the valve box top assembly on the lower assembly and secure it with the two screws re moved in step 1 abov
50. each tube is attached Corresponding tubes on the new detector must be connected to the same fittings If a new detector is being installed prepare the replacement detector block by pre bending its tubes until they are oriented similarly to those on the detector just removed Ifa new detector is being installed ensure that the base and vent port of the new detector are capped to prevent contamination Install the heater temperature sensor and delta tsensor cartridges into the heated block Carefully install the detector securing it to the instrument with two screws CAUTION When installing tubing at the solenoid valve ensure that all O rings are positioned properly NOTE When installing a series connected TCD make sure its oven return exhaust vent tube extends into the oven Connect and tighten tubing from the detector to the solenoid switching valve finger tight En sure that the tubing is installed at their proper fittings on the TCD solenoid valve BLOCK SVC 4 6 23 24 25 26 27 28 29 30 31 32 33 Connect the TCD filament and delta T tem GAS perature sensor leads at the connector block tae TY PE on the detector PCB making sure the filament DERAT leads are connected properly per the illustration a N2Ar atthe right He H2 Restore supply pressure and check for leakage atall installed fittings If no leaks exist turn off the supply gas Remove the c
51. enclosures 12 Remove the detector PCB from the right side of the instrument by grasping itin the center area along its outer edge and pulling it straight out This will draw the interconnect out of the detec tor 13 Use a 1 5 mm hex wrench to loosen the two setscrews which secure the collector inside the SPACER collector assembly y TOROID WIRE SOLDERED AT THIS oes POINT CAUTION COLLECTOR Do not handle the collector with bare hands Use needle nose pliers when handling the collector to avoid contaminating it with finger oils and or other contaminants 14 Use needle nose pliers inserted through the opening in the top of the detector cover to re move the collector by forcing it down from in SET RtREN KES side the top of the collector assembly EPA COLLECTOR 15 Remove the two Pozidriv screws securing the collector assembly to the detector cover COLLECTOR BODY SCREWS COLLECTOR ASSEMBLY y TOROID SPACER ASSEMBLY AZ 16 Remove the two screws securing the toroid spacer assembly to the inside of the detector cover SVC 4 30 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Remove the collector assembly and the toroid spacer assembly from the detector cover as a unit Using a 1 5 mm hex wrench loosen the set screw securing the lower toroid lead to the col lector assembly SPACER K TOROID WIRE Remove the lower toroid lead from the c
52. exhaust vent tubes to the applicable tubes disconnected in step 14 Install the right side panel and secure using four screws Install the electronics carrier top cover Install the hinged top cover and secure using a screw and washer Connect the ground strap to the hinged top cover using a screw Restore power to the instrument SVC 4 55 Clean Anode ECD Cell Weldment G1223A G1224A Versions WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT NOTE This procedure may only be performed by Specific License owners 1 Setthe main power line switch to the off position RED O VISIBLE ue 2 Disconnect the power cable from its receptacle Rg lt 3 Allow time for the oven and heated zones to cool f J 4 When the heated zones are cool turn off all gas supplies 5 Liftthe hinged top cover atits front edge exposing the detector area 6 Using a Pozidriv screwdriver remove the screw securing the detector top cover to the thermal strap 7 Remove the detector top cover 8 Disconnectthe cell anode lead from the PCB interconnect by sliding it off the end of the anode 9 Loosen the locking screw on the ECD cover 10 Slide the locking tab on the ECD cover back freeing the cover from the anode shaft of the cell weldment ECD COVER 11 Carefully sl
53. exposing the detector area 5 Remove the electronics carrier top cover 6 Remove the right side panel by removing four screws two each along its top and bottom edges a a Pe SCREWS lt gue iN S m Saz S 8 as ELECTRONICS SS 889 CARRIER TOP COVER SCREWS RIGHT SIDE PANEL 7 Loosen the screws securing the clamps holding the detector PCB interconnect in place SVC 4 35 10 11 12 13 14 15 CAUTION The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes or enclosures Remove the NPD detector PCB by sliding it out of the main PCB at the right side of the instru ment Removal of the PCB will withdraw the interconnect from the thermal strap Use caution to avoid damaging the spring at the end of the interconnect At the bottom of the detector being serviced inside the column oven remove the column and hardware associated with the detector s liner column liner nuts ferrules makeup gas adap on Use a Pozidriv screwdriver to remove the three screws securing the detector cover to the ther mal strap Remove the detector top cove
54. heated zones are cool turn off all gas supplies 5 Remove the two screws securing the left side panel along its bottom edge 6 Slide the leftside panel towards the rear of the instrument and lift 7 Remove the four screws securing the rear cover to the instrument 8 Slide the rear cover towards the rear of the instru ment 9 Remove the electronics carrier top cover above the signal cable plugs and receptacles to expose the top edge of the TCD detector PCB 10 Remove the right side panel by removing four screws two each SCREWS SSS ELECTRONICS SS CARRIER TOP S COVER X SCREWS N RIGHT SIDE PANEL SVC 3 19 11 12 13 14 15 16 17 18 Disconnect the EFS tubing from their connec tion sites atthe tubing ends Label the tubes as to their respective flow channel A or B to ensure an identical connection to the re placement EFS module Free the EFS module by removing two screws The module can then be removed from its com partment in the side of the instrument Remove the connector from the EFS Notice the locking tab at each end of the plug Re lease the locking tabs and pull the plug straight out from its receptacle CAUTION Wivi o VLV2 AUX WHEN DISCONNECTING A PLUG PULL ON THE PLUG NOT ON ITS WIRES PULLING ON THE WIRES MAY CAUSE BREAKAGE Remove the EFS module from the instrument Install the replacement
55. installed inlet to the inlet flow control components so that they lay within the U shaped channels to the left of the inlets Install the tubes removed from the employed flow controller in steps 9 and 10 onto the inlet weldment Secure the inlet to the instrument using two screws If employed install the cryo blast weldment CAUTION Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile Install the injection assembly septum PCOC Carefully slide the heater and sensor cartridges into the heated block portion of the inlet Install the air deflector and secure it to the weldment using one screw insert spring and insert the injection assembly secures the other items to the inlet weldment Restore the supply gas pressure Turn off the supply gas Install the injection port cover Restore power to the HP 5890 Series Il Install the liner and all other hardware except the column removed in step 5 Check for leaks at all of the newly mated fittings Remove the cap plug from the end of the inlet Install the column and associated hardware removed in step 5 Install the left side panel and secure using two screws SVC 2 19 INJ ECTION PORT COOLING FAN Remove Replace Cooling Fan WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS
56. is oriented correctly For a cell installed in the A position its exhaust tube will point towards the front of the instrument In the B position the vent tube will point towards the rear of instrument Secure the detector weldment to the heated block using two screws Install the insulation around the detector base install the thermal strap working it carefully over the collector lead and exhaust vent tube Install the shield over the thermal strap Depending on the detector s location it may be nec essary to bend the shield to remove and install it Avoid excessive bending as this will fatigue the metal shield shortening its life SVC 4 51 39 40 41 42 43 44 45 46 47 48 CAUTION The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes or enclosures Install the detector PCB atthe right side of the instrument This will feed the interconnect in to the detector clamps on the thermal strap Tighten the screws securing the clamps which hold the interconnect in place Connect the cell collector lead to the PCB interconnect Position the detector cover over the detector
57. lation of the PCB will insert the interconnect into the thermal strap Use caution to avoid damaging the spring at the end of the inter connect i Tighten the screws on the clamps which secure the interconnect to the thermal strap j Install the collector mount and collector as sembly as a unit SVC 4 16 k Secure the collector mount to the thermal strap using three screws I Connect the ignitor wire lead connector at the mating connection adjacent to the ignitor n Install the right side panel and secure using four screws o Install the electronics carrier top cover 8 Restore all gas supplies 9 Restore power to the HP 5890 Series Il SVC 4 17 Remove Replace FID J et WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME IONIZATION FID DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS 1 Setthe main power line switch to the off position 2 Disconnect the power cable from its receptacle 3 Turn off all gas supplies 4 Lift the hinged top cover at its front edge exposing the detector area 5 Remove the electronics carrier top cover 6 Remove the right side panel by removing four screws two each along its top and bottom edges f oo 2g EL
58. nuts ferrules makeup gas adap n Use a 1 4 inch nut driver to remove the jet from the detector weldment Use an inert gas to blow out the detector weld ment cleansing it of any debris Ensure that there is no debris in the detector weldment Replace the jet with a new jet Although re placement is highly recommended the jet may be cleaned and installed at the operator s dis cretion Use an approved solvent and a clean ing wire to clean jets SVC 4 19 COLLECTOR ASSEMBLY COLLECTOR gt MOUNT THERMAL STRAP JET DETECTOR WELDMENT 17 18 19 20 21 22 23 24 25 26 27 28 CAUTION DO NOT OVER TIGHTEN THE JET OVER TIGHTENING MAY PERMANENTLY DEFORM AND DAMAGE THE J ET THE DETECTOR BASE OR BOTH Install the replacementjet finger tight Use two fingers on the nut driver to obtain this tight ness Tighten the jet 1 8 turn past finger tight using the nut driver At the bottom of the detector inside the column oven install the column and any associated hardware removed in step 12 CAUTION The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control enve
59. of the inlet Remove any insulation from around the top of the inlet __ HEATER SENSOR Lift the inlet enough to expose the heated block CABLE ASSEMBLY and heater sensor wiring CAUTION Handle the heaterand sensor cartridges with care to prevent breakage The cartridges particularly the PURGED PACKED INLET WELDMENT smaller sensor cartridge are fragile Carefully slide the heater and sensor cartridges out of the heated block portion of the inlet BOTTOM INSULATION Lift the inlet out of the instrument BOTTOM INSULATION 5 emove the heated block and heated block COVER ae pA strap from the base weldment by removing two screws SCREW Remove the top insert weldment and o ring from the base weldment CAUTION TOP INSERT i WELDMENT Use caution to avoid sharp bends when bending HEATED BLOCK tubing Sharp bends may crimp the tubing O J Ei If the inlet base weldmentis to be replaced y prepare the replacement by pre bending its ONS 2 2 tubing into orientations similar to that of the re oH ee l T2 moved inlet i Secure the heated block and heated block wee La strap to the base weldment using two screws GED Slide the heater and sensor cartridges into the E BASE WELDMENT heated block of the inlet being installed L ef Install the top insert weldment and associated Xx E o ring onto the base weldment ensuring that HEATED BLOCK the o ring is installed and seated properly
60. of the instrument Remove the right side panel by removing four screws two each along its upper and lower edges l SCREWS p x RIGHT SIDE ELECTRONICS j V PANEL CARRIER TOP COVER SCREWS Using a Pozidriv screwdriver remove the three screws securing the detector cover to the ther mal strap Remove the detector cover Disconnect any tubing attached to the detector exhaust tube Disconnect the cell collector lead from the PCB interconnect Loosen the screws securing the clamps which hold the interconnect in place CAUTION oes THERMAL The following steps require protection against ESD STRAP Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes or enclosures Remove the detector PCB from the right side of the instrument by grasping it in the center area along its outer edge and pulling it straight out This will draw the interconnect out of the detec tor clamps on the thermal strap Remove the five screws securing the thermal strap and shield to the instrument SVC 4 50 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 Remove the shield from the thermal s
61. of the main PCB Disconnect connector J 9 from its receptacle by squeezing its ribbed size and pulling the plug straight out of the receptacle An AMP pin extraction tool 8710 0614 is re quired to properly remove pins from connector SLEEVE J9 The tool features a sleeve to release the pin locking lance and a plunger to eject the pin from the plug The following steps detail how PUSH ROD to remove the pins from the connector BUTTON HANDLE SVC 6 6 16 17 18 19 20 21 a Slide the sleeve portion of the tool straight into the pin to be removed from the con nector until it is fully bottomed b Atthe same time allow the plunger to be pushed back by the pin c Rotate the body of the tool to ensure it is fully bottomed and to ensure the pin lock ing lance is released d Holding the body of the tool firmly in place fully inserted into the plug depress the plunger to eject the pin from the connector e Remove the tool from the plug Insert pins from the new heater cartridge into their appropriate locations in the plug making sure the locking lance on each pin seats into the plug Gently pull on the wire to ensure it is locked in the plug DEPRESS Insert the plug into the J 9 receptacle PUSH ROD BUTTON Replace the high voltage cover on the right side of the main PCB Insert connector P 10 into its receptacle on the main PCB CAUTION When disconnecting a plug pull on the plu
62. only electronic test equipment necessary is a quality VoltOhm Ampmeter The HP 5890 Series II GC contains a minimum of four and a maximum of nine electronic boards The four boards always installed are one of the AC Power Boards the Keyboard and Display Board usually done as one module and the Main Board The actual AC Power Board located in the rear of the instru ment behind the column oven compartment is one of three possible boards based on the voltage and phase configuration of the line The Keyboard and Display Board are two boards located on the front of the Electronics Module The Keyboard plugs directly into the Display Board The Main Board is mounted inside the right side panel of the instrument and occupies most of the space in the Electronics Module More importantly the Main Board contains most of the instrument s electronics General Description The 05890 60015 PC board is a collection of circuits which allow operation of the 5890 Series Il gas chromatograph The circuits on the new board include power supplies CPU A D converter D A con verter clocks and general control circuits Refer to the main PCB diagrams pages SVC 1 12 and SVC 1 13 The functions provided by the new PC board are the same as those provided by the original HP 5890A GC except that components have been added to control an additional heated zone and 2 AC valves The new board differs only in its implementation of these functions The foremost change is
63. properly at some selected temperature e g 100 C SVC 5 14 Replace Oven Fan and or Oven Fan Motor WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT 1 Set the main power line switch to the off position RED O VISIBLE aie 3 Allow time for the oven and heated zones to cool QF 2 Disconnect the power cable from its receptacle 4 When the heated zones are cool turn off all gas supplies 5 Remove the four screws securing the rear cover to the instrument 6 Remove the rear cover by Sliding it towards the rear of the instrument 7 Inside the oven remove columns and other hardware preventing free access to the heater 8 Remove the four screws securing the oven heater fan shroud to the instrument 9 Carefully swing the left edge of the shroud towards the front of the instrument 10 With a hex wrench loosen the setscrew securing the fan to the motor shaft 11 Carefully slide the fan off the motor shaft SVC 5 15 FAN SHROUD d SCREWS SCREWS AT SE HEATER S STANDOFFS S SET SCREW 589 GAS CH Ro MATOGRAPH FAN 1 ar Shroud FAN BLADES ARE FRAGILE BE CAREFUL NOT TO BEND THE BLADES 12 If only the fan blade is being replaced go to step 18 13 At the rear of the instrument trace the fan motor wi
64. replaced display PCB Install original display PCB assembly Go to probable cause b Replace display PCB rib bon cable If problem persists go to probable cause c Replace main PCB Press clear dot minus enter and set the lock status to OFF If problem persists go to probable cause b Replace display PCB as sembly If problem persists remove replaced display PCB Install original display PCB assembly Go to probable cause c Replace display PCB rib bon cable If problem persists go to probable cause d Replace main PCB Replace Display PCB Assembly WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD TNE IS CONNECTED AVOID A POTENTIALLY jou DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT 1 Setthe main power line switch to the off position 2 Disconnectthe power cable from its receptacle 3 Remove the electronics carrier top cover by grasping itatthe rear and lifting upwards until its catch releases then pulling it towards the rear of the instrument 4 Remove the right side panel by removing four screws two each along its upper and lower edges x SCREWS per KX RIGHT SIDE ELECTRONICS PANEL CARRIER TOP COVER SCREWS This procedure requires precautions against ESD Electro Static Discharge Usea grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suit
65. supply gas pressure Check for leaks at all of the newly mated fittings Turn off the supply gas Remove the cap plug from the end of the inlet removed in step 5 Install the left side panel and secure using two screws Install the injection port cover Restore power to the HP 5890 Series II SVC 2 7 SPLIT ONLY CAPILLARY INLET Remove Replace Split Only Capillary Inlet WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS TI TLL CONNECTED AVOID A POTENTIALLY JUU UU DANGEROUS SHOCK HAZARD BY X lt DISCONNECTING THE POWER CORD BEFORE Jea 0 WORKING ON THE INSTRUMENT Set the main power line switch to the off position Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool gt e WwW N Ff When the heated zones are cool turn off all gas supplies 5 Atthe bottom of the inlet s to be removed in side the column oven remove the column and hardware associated with the inlet s liner column liner nuts ferrules makeup gas adapt er etc back edge and lifting it upward 7 Remove the two screws securing the left side HERE TO panel along its bottom edge ae 8 Slide the left side panel towards the LID mi rear of the instrument and lift s Val LEFT SIDE WASHER SVC 2 8 10 11 12 13 14 15 16 17 18 19 20 21 22 Disconnect the Carrier Gas Inlet l
66. the PCB will withdraw the interconnect from the thermal strap Use caution to avoid damaging the spring at the end of the interconnect Use a Spanner wrench part no 19301 00150 to remove the base spanner nut from the detec tor weldment Remove the thermal strap by removing the five screws securing it to the instrument Cap the weldment openings at the top over the jet aperture and bottom inside the column oven to prevent damage and or contamination BASE SPANNER NUT Remove the two screws securing the detector 9O lt _ weldment to the instrument THERMAL STRAP Slide the insulation plate out from over the detector weldment Remove the insulation around the detector weldment to expose the two screws securing the weldment to the instrument Lift the base up enough to expose the heated block heater and sensor cartridge wires CAUTION Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile Carefully slide the two cartridges out of the block SVC 6 25 21 22 23 24 25 26 27 28 29 30 31 Slide the replacement heater and temperature sensor cartridges into the heated block portion of the detector weldment Position the detector weldment in the detector opening Install the insulation around the detector weldment Position the insulation plate over the installed insulation and align its mo
67. the use of a 68 pin PLCC custom IC which performs the same functions as do 26 TTL IC s on the original 05890 60010 board SVC 1 11 Connectors 1 thru 15 are used to connect the Main Board either with the other electronic assemblies within the instrument or external devices such as an integrator Refer to the main PCB diagrams pages SVC 1 13 and SVC 1 14 Refer to appendix a of this document for information on the main PCB connectors SVC 1 12 MAIN PCB FUNCTIONAL ZONES HEATED TEST POINTS ZONES AND VALVES AND CRYO A D DETECTORS al TEST POINTS DC POWER SUPPLY AC POWER SUPPLY o PROCESSOR KEYBOARD CLOCKS AND TIMING SVC 1 13 REMOTE START STOP OVEN FLAP STEPPER ZONE ANALOG ANALOG TEMP SIGNAL 1 SIGNAL 2 SENSORS OUTPUT OUTPUT MOTOR IGNITOR J1 VALVE PCB KEYBOARD AND J1 DISPLAY i MAIN PCB CRYO amp 4 HEATED DETECTOR ZONES A j2 PCB 5th HEATED DETECTOR ZONE amp B J2 VALVE 1 amp 2 PCB PRESSURE CONTROL j PCB COMMUNICATIONS PCB J12 TRANSFORMER MAIN SWITCH AC PCB OVEN TRIAC OVEN HEATER OVEN FAN MOTOR ELECTRONIC FLOW J1 SENSOR LINE CORD SVC 1 14 Section 2 INLET COMPONENTS REPLACING INLET COMPONENTS There are five inlet options available for the HP 5890 Series Il Gas Chromatograph packed column packed column with septum purge split splitless capillary split only capillary and
68. the wire harness along the same path used by the old harness and secure it with plastic wire ties SVC 5 26 24 An AMP pin extraction tool 8710 0614 is re 25 26 27 quired to properly remove pins from connector J 9 The tool features a sleeve to release the pin SLEEVE locking lance and a plunger to eject the pin from the plug The following steps detail how HANDLE to remove the pins from the connector PUSH ROD BUTTON a Slide the sleeve portion of the tool straight into the pin to be removed from the con nector until itis fully bottomed PIN CONTACT b Atthe same time allow the plunger to be pushed back by the pin c Rotate the body of the tool to ensure itis fully bottomed and to ensure the pin lock SLEEVE ing lance is released d Holding the body ofthe tool firmly in place fully inserted into the plug depress the plunger to ejectthe pin from the connector SLEEVE BOTTOMED e Remove the tool from the plug IN CAVITY ROTATE HANDLE Insert pins from the new valve into their appropriate locations in the plug making sure the locking lance on each pin seats into the plug Gently pull on the wire to ensure itis locked in the plug Insertthe plug in its receptacle J 9 on the main circuit board Notice that the plug is keyed and can only be inserted wren Gon one Way BUTTON SVC 5 27 28 29 30 31 32 33 34 Connect the cryogenic fluid supply fi
69. to the detector base weldment Install the assembled detector weldment assembly vertically onto the transfer tube weldment being careful notto damage the fused silica liner Install the heater and sensor cartridges into the detector weldment Secure the weldment exit tube to the jet assembly with by holding the jet weldment with a 1 2 inch wrench and tightening the nut which secures the weldment with a 9 16 inch wrench Install the chimney assembly and secure using two screws Install the exhaust tube on the detector weldment through the opening in the top of the chim ney and tighten using a 9 16 inch wrench Install the drip tube on the exhaust tube Install the sulphur filter in the flange adapter Slide the PMT tube assembly onto the detector assembly Secure the PMT assembly to its support bracket using the extension spring Install the FPD cover on the instrument and secure using a thumbscrew Restore power to the instrument SVC 4 79 Replace Detector Base Weldment WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME PHOTOMETRIC FPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS 1 Setthe main power line switch to the off position RED O VISIBLE 2 Disconnectthe power
70. weldment ANODE CELL WELDMEN Carefully slide the ECD cover over the anode shaft and anode and remove it from the detec tor Cap the base of the detector inside the column oven to avoid damage or contamination of the detector ANODE WELDMENT Remove the two Pozidriv screws securing the detector weldment to the upper and lower SCREW heated blocks UPPER CP gt lt lt HEATED Remove the weldment and upper heated block N TA BLOCK from the lower heated block Aa ODE RETAINING NUT ANODE FERRULE SOCKET Remove any insulation from around the base of SC UPPER CELL rE Pe a WELDMENT the weldment NOTE Perform steps 23 through 31 only if it is desired to remove the ECD heated block Otherwise proceed to step 32 If required remove the two Pozidriv screws se curing the heated block to the instrument BOTTOM Lift the heated block out of its mounting posi INSERTION LOWER HEATED BLOCK tion BOTTOM INSULATION SVC 4 54 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 Carefully slide the two cartridges heater sen sor out of the block The sensor enters the block from the top The heater enters from be low The smaller of the two cartridges is the sensor and must be handled gently in order to prevent breakage Remove any insulation from around the base of the removed weldment and inside the lower heated block Remove the l
71. with a 9 16 inch wrench Install the chimney assembly and secure using two screws Install the exhaust tube on the detector weldment through the opening in the top of the chim ney and tighten using a 9 16 inch wrench Install the drip tube on the exhaust tube Install the o ring for the sulphur filter in the flange adapter Install the sulphur filter in the flange adapter Slide the PMT tube assembly onto the detector assembly Secure the PMT assembly to its support bracket using the extension spring Install the FPD cover on the instrument and secure using a thumbscrew Restore power to the instrument SVC 4 75 Replace Fused Silica Liner 8 WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME PHOTOMETRIC FPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS Set the main power line switch to the off position RED O VISIBLE Lue Disconnect the power cable from its receptacle 9 lt A Turn off the hydrogen air or oxygen and aux iliary nitrogen supplies to the detector at the flow control panel Allow time for the heated zones to cool Remove the thumb screw holding the detector cover to the top of the HP 5890 Facing the instrument rotate the detector cover to you
72. 128 frames will be transmitted from the CPU through the Communications Interface Board With the HPIL cable in Stalled the same word should be transmitted back to the Z80 processor sensed and compared with the transmitted word If the comparison verifies correct transmission and reception a PASSED SELF TEST message will be displayed on the instrument s front panel visual display Note that this is the HPIL Selffest and is not the same as the instrument Selffest done at power turn on Ifa component failure exists in the HPIL circuitry or if either the Interface Board or HPIL Cable is not properly installed a FAILED SELFTEST message will be displayed SVC 1 9 To leave this mode of testing press any of the instrument function keys Calib and Test Clear Dot 8 Set PID Controls Calib and Test Clear Dot 9 Disp Temp amp Demand Test Chromatogram Signal Output Test This diagnostic testis selected from the keyboard by pressing One of the signal selection keys either SIG 1 or SIG 2 and the 9 key on the numeric key pad and the ENTER key Test plot mode is confirmed by the display showing SIGNAL 1 or 2 TEST PLOT Pressing SIG 1 or 2 asecond time displays the current signal level value which is 0 0 initially This permits monitoring the output signal The test chromatogram which is permanently stored in the HP 5890 SERIES Il is initiated by pressing the START key Each chromatographic cycle consists of three peaks Each peak is about 1 10
73. 2 APPX A 10 P12 P12 1 P12 2 P12 3 P12 4 P12 5 P12 6 P12 7 P12 8 P12 9 P12 10 P12 11 P12 12 P12 13 P12 14 P12 15 P12 16 P12 17 P12 18 P12 19 P12 20 P12 21 P12 22 P12 23 P12 24 P12 25 P12 26 P12 27 P12 28 P12 29 P12 30 EPC MPC PCB CONNECTOR BDO BD1 BD2 BD3 BD4 BD5 BD6 BD7 GND EXT_IN2 EXT_OUT2 EXT_OUTO EXT OUT EXT_OUTS8 5V 5V 9 8304MHz GND GND GND GND GND D240 POP 15V 15V 10VREF COMMON DAC2 ATTN2 goes thru R5 to RCDR2 of P5 APPX A 11 COMMUNICATIONS PCB CONNECTOR BDO BD1 BD2 BD3 BD4 BD5 BD6 BD7 EXT OUTZE Sete ecg asa m a Bes ee ese Decode to give A 5 addresses 3 35 67 99 A 6 for Input or Output 5V DGND for digital circuits DGND for digital circuits D240 240 Hz square wave POP power on pulse SGND for switching or analog circuits SGND for switching or analog circuits 24V 24V 24V 24V AUXILIARY CONNECTOR AUX HEATER AUX HEATER RETURN TO ACGND VALVE2 VALVE2 RETURN TO ACGND VALVE1 VALVE1 RETURN TO ACGND WORKFILE EMULATION CONNECTOR Workfile emulation to A2 OF U16 Workfile emulation GND APPX A 12 DISPLAY PCB ic GND 1 2 24V 1 3 15V 1 4 GND 1 5 614 4KHz 1 6 GND 1 7 BA4 1 8 GND 1 9 38 4KHz 1 10 38 4KHz 1 11 JOJ 1 12 15V 1 13 5V 1 15 24V 1 16 EXT_IN1 1 17 EXT_OUT9 J J J J J J J J J J J J J J1 14 5V J J J
74. 25cc sample loop is included with all valve systems configured for gas sampling 10cc and 5cc loops occupy one valve position limiting the number of valves that can be housed in a valve compartment SVC 7 5 LIQUID SAMPLE VALVES LSVs Liquid sampling valves are designed for use with liquefied gases under pressure such as ethane propane butane LNG etc They are notintended for nonvolatile liquids at room conditions where a concealed leak may allow an accumulation or pool of liquid to form that may presenta significant fire hazard All standard liquid sample valves have 1 16 inch fittings and are classified by the sample size of the installed rotor 0 2mL 0 5mL or lmL capacity The two types of valves available are standard or low pressure 1000 psig and high pressure 5000 psig in the four port single purpose liquid sampling valve Whenever a liquid sample valve is used an adjustable restrictor is employed on the sample outlet line to maintain internal sample pres sure and thereby keep a compressed gas liquefied SVC 7 6 TROUBLESHOOTING AND MAINTENANCE Chromatographic Symptoms Troubleshooting valves and their related plumbing is primarily a matter of systematic checking and verifica tion of unimpaired mechanical operation of any moving part This requires an understanding of how the valve functions internally and how the plumbing is configured A plumbing diagram is essential for effective troubleshooting The following symptom c
75. 3 5 GND J 13 6 GND J 13 7 GND J 13 8 GND J 13 9 GND J J J APPX A 18 INET PCB 12 1 BDO 12 2 BD1 12 3 BD2 12 4 BD3 12 5 BD4 12 6 BD5 12 7 BD6 12 8 BD7 12 9 GND J J J J J J J J J J12 10 EXT_IN2 ji2di EXT_OUT2 J 12 12 EXT OUTO J 12 13 EXT_OUT1 J 12 14 EXT_OUT8 J12 15 5V J J J J J J J J J J J J J J J 12 16 5V 12 17 9 8304MHz 12 18 GND 12 19 GND 12 20 GND 12 21 GND 12 22 GND 12 23 D240 240 Hz square wave 12 24 POP power on pulse 12 25 15V 12 26 15V 12 27 10VREF 12 28 COMMON 12 29 DAC2 12 30 ATTN2 13 1 OUT 13 2 OUT_REF 13 3 IN_REF 13 4 IN APPX A 19 BUFFERED INET PCB BDO BD1 BD2 BD3 BD4 BD5 BD6 BD7 GND EXT_IN2 EXT_OUT2 EXT_OUTO EXT_OUT1 EXT_OUT8 5V 5V 9 8304MHz GND GND GND GND GND D240 240 Hz square wave POP power on pulse 15V 15V 10VREF COMMON DAC2 ATTN2 OUT OUT_REF IN_REF IN APPX A 20 DICE PCB 12 1 BDO 12 2 BD1 12 3 BD2 12 4 BD3 12 5 BD4 12 6 BD5 12 7 BD6 12 8 BD7 12 9 GND J J J J J J J J J J12 10 EXT_IN2 J12 11 EXT_OUT2 J12 12 EXT_OUTO 12 13 EXT_OUT1 12 14 EXT_OUT8 pi2zis 5V J J J J J J J J J J J J J J J 12 16 5V 12 17 9 8304MHz 12 18 GND 12 19 GND 12 20 GND 12 21 GND 12 22 GND 12 23 D240 240 Hz square wave 12 24 POP power on pulse 12 25 15V 12 26 15V 12 27 10VREF 12 2
76. 7 Remove the pressure control PCB from the right side of the instrument by grasping itin the center area along its outer edge and pulling it straight out 8 Install the pressure control PCB by sliding it into its mounting location on the main PCB 9 Restore all gas supplies to the instrument 10 Install the right side panel and secure using four screws 11 Install the electronics carrier top cover 12 Restore power to the HP 5890 Series Il N b i cm Cc ci a bf by bh Hh th oo EAIC CRC PRESSURE CONTROL PCB TYPICAL SVC 3 17 DON T CARE BOWN DOWN B CHOICE OF PID CONSTANTS WN B CHOICE OF PID CONSTANTS DOWN WN FORWARD PRESSURE BACK PRESSURE W ENABLE DISABLE EPC TYPICAL SWITCH SETTINGS FOR EPC MPC PCBs SVC 3 18 Replace Electronic Flow Sensor Module WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN RED O VISIBLE THE INSTRUMENT WHEN THE POWER CORD Iu Pe IS CONNECTED AVOID A POTENTIALLY JE DANGEROUS SHOCK HAZARD BY CR 0 DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME IONIZATION FID AND NITROGEN PHOSPHOROUS NPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS Set the main power line switch to the off position Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool gt WwW N FF When the
77. 7 14 TEMPERATURE SENSOR CONNECTOR OVEN SENSOR GND DETA SENSOR GND DETB SENSOR GND INJ A SENSOR GND INJ B SENSOR GND AUX SENSOR GND FAN injection port cooling FAN GND injection port cooling APPX A 8 OVEN FLAP MOTOR CONNECTOR 3VAC IGNITOR 3VAC IGNITOR 24V VALVA 24V VALVB FO phase 0 of oven flap stepper motor F2 phase 2 of oven flap stepper motor 24V for oven flap stepper motor 24V for oven flap stepper motor F1 phase 1 of oven flap stepper motor F3 phase 3 of oven flap stepper motor CRYOGENIC VALVE AND AUX HEATED ZONE CONNECTOR CRYO CRYO RETURN TO ACGND INJ B HEATER INJ B HEATER RETURN TO ACGND INJ A HEATER INJ B HEATER RETURN TO ACGND DETB HEATER DETB HEATER RETURN TO ACGND DETA HEATER DETA HEATER RETURN TO ACGND AC POWER SUPPLY CONNECTOR 40VAC ACGND CT 40VAC OVEN PULSE TRANSFORMER ACGND CT 3VAC 120VAC for heaters NOT USED 120VAC for heaters CONTACTOR K1 ACGND 3VAC APPX A 9 P11 ELECTRONIC FLOW SENSOR CONNECTOR P11 1 FLOWA P11 2 FLOWB P11 3 10VREF P11 4 10VREF P11 5 15V P11 6 GND P11 7 15V P11 8 GND P11 9 ACGND P11 10 ACGND P11 11 ACGND P11 12 ACGND P11 13 24V P11 14 24V P11 15 3VAC fused F1 P11 16 3VAC fused F1 P11 17 3VAC fused F1 P11 18 3VAC fused F1 P11 19 3VAC fused F1 P11 20 3VAC fused F1 P11 21 3VAC fused F2 P11 22 3VAC fused F2 P11 23 3VAC fused F2 P11 24 3VAC fused F2 P11 25 3VAC fused F2 P11 26 3VAC fused F
78. 8 COMMON 12 29 DAC2 12 30 ATTN2 P1 1 OUT P1 2 OUT_REF P1 3 IN_REF P1 4 IN J11 DIGITAL GROUND J1 2 T R J1 3 REN J1 4 IFC J1 5 5 DCV J1 6 NDAC J1 7 NRFD 1 8 DAV 1 9 DIGITAL GROUND J 1 10 EOI J1 11 ATN J1 12 SRQ APPX A 21 1 13 5 DCV 1 23 5 DCV 1 24 RX RECEIVE 1 25 TX TRANSMIT 1 26 GROUND J J1 14 DIOO J1 15 DIO1 J1 16 DIO2 J1 17 DIO3 J 1 18 DIGITAL GROUND J1 19 DIO4 J 1 20 DIO5 J1 21 DIO6 1 22 DIO7 J J J J DICE CONNECTOR PCB 1 1 DIGITAL GROUND 1 2 T R 1 3 REN 1 4 IFC 1 5 5 DCV 1 6 NDAC 1 7 NRFD 1 8 DAV 1 9 DIGITAL GROUND 1 10 EOI 1 11 ATN 1 12 SRQ J J J J J J J J J J J J J 1 13 5 DCV J1 14 DIOO J J J J J J J J J J J J 1 15 DIO1 1 16 DIO2 1 17 DIO3 1 18 DIGITAL GROUND 1 19 DIO4 1 20 DIO5 1 21 DIO6 1 22 DIO7 1 23 5 DCV 1 24 RX RECEIVE 1 25 TX TRANSMIT 1 26 GROUND J2 1 DIO1 J 2 2 DIO2 J2 3 DIO3 J 2 4 DIO4 J25 EOI 2 6 DAV APPX A 22 NRFD NDAC IFC SRQ ATN SHEILD DIO5 DIO6 DIO7 DIO8 REN DCOM 18 thru 24 tied DCOM to digital DCOM ground SHEILD TX TRANSMIT RX RECEIVE NC NC NC GND NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC APPX A 23 ELECTRONIC FLOW SENSOR MODULE 1 1 FLOWA 1 2 FLOWB 1 3 10VREF 1 4 10VREF 1 5 15V 1 6 GND 1 7 15V 1 8 GND 1 9 ACGND J J J J J J J J J J 1 10 ACGND
79. 800 degrees C most likely the oven sensor is open although it could be some compo nentin the sensing circuit If the actual value of the oven temperature seems reasonable the problem is likely to be in the oven control circuitry FAULT ZONE NAME TEMP RDG where the ZONE NAME could be OVEN INJA INJB DETA DETB or AUX Any of these messages indicates that the specified zone or oven temperature reading was out of acceptable range This most often is the result of an inoperative sensor in the named zone FAULT OUTPUT NAME TEST where the OUTPUT NAME could be DAC1 DAC2 ATTN1 or ATTN2 If thermal fault messages also appear suspect the A D Converter circuitry The A D Converter section of the Main Board is used to measure DAC and ATTN outputs However if only this test mes sage appears the most obvious area to suspect is the D A Converter portion of the appropriate board DAC2 or ATTN2 indicates the D A section of the Interface Board whereas the DAC1 or ATTN1 indi cates the D A portion of the Main Board Other areas that could be at fault include the CPU and A D sections of the Main Board but are less likely Occasionally multiple faults messages may exist at the same time Only the last message to occur will automatically be displayed on the front panel of the in strument Others will be retained in the instrument s memory By pressing the CLEAR key the instru ment will roll through all of its Not Ready states which include all FAULT
80. 8710 1542 to remove the EXTRACTION TOOL i f LANCE RESET STOP appropriate pins from connector P8 The tool T features a lance release tip and a lance reset tip The lance release tip is used to depress the pin locking lance to extract the pin from a connector The lance reset tip positions a lock ing lance to its proper height to ensure reten A mi DASH NUMBER tion ofthe pin in the connector ea MARKED HERE TOOL STOP LANCE RELEASE se TIP INSERT TIP LOCKING HERE LANCE BACK OF CAVITY BACK OF CONTACT HOUSING TYPICAL Prepare the pins corresponding to the replace ment sensor cartridges by adjusting their lock LANCE TAPER LOCKING ing lances using the lance reset portion of the RESET LANGE tool Insert the pins for the replacement sensor into their appropriate locations in the plug making sure the locking lance on each pin seats into its hole through the side of the plug RECEPTACLE BOX TYPICAL LOCKING LANCE CAVITY TYPICAL BACK OF HOUSING SVC 3 9 23 24 25 26 27 28 Gently pull on the wire to ensure that the pin is locked in the connector Insert connector P8 into its receptacle by pressing it straight in until it bottoms CAUTION When connecting lines and fittings ensure that all o rings are properly installed Connect the plumbing to the new valve Restore gas supplies to the instrument Check for leakage at all installed fittings If the system is leak
81. C 11 7 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Install the replacement transformer onto the transformer bracket and secure using four screws and four insulator bushings Position the transformer and transformer bracket to allow threading of the P10 connector cable and power switch wiring through their applicable paths in the electronics carrier Secure the transformer and transformer bracket to the AC power supply base using three nuts and one screw Connect wiring to power switch as shown in illustration GREY Install the power switch in its mounting slot be BLACK low the main PCB Install connector P10 in its receptacle on the main PCB by pushing it straight in until fully bottomed Secure the ground strap to the transformer bracket using a screw and lock washer Install connectors J 26 and J 27 into their re ys BLACK YELEOW spective receptacles on the AC power supply PCB pushing each straight down until fully bot tomed NORMAL INTEGRITY CHECK Install the right side AT POWER ON panel and secure using two screws ACTUAL SETPOINT SE sr ic ans Le all alphanumeric and LED elements are lit Install the electronics STATUS i FINAL carrier top cover FINAL e 7 INITIAL NOT Slide the rear cover on TIME keany to the instrument ACTUAL SETPOINT Secure the rear cover CITESIMING MEMORIY a oogres
82. CONNECTORS ccuueeeueeeaeaees APPX T20VAC BOARD 48s ted craig tag eid nied wane en bors be i e APPX A 220VAC SINGLE PHASE BOARD 0 cece eee eee eee APPX A 220VAC SPLIT PHASE BOARD iccicciia deere cde i en eee ne APPX A MAIN PCB CONNECTORS ccceeccueecceneeeeneeeee APPX P1 KEYBOARD CONNECTOR 0 c cece cece eee APPX A P2 DETECTOR A PCB CONNECTOR cece cece eee APPX A P3 DETECTOR B PCB CONNECTOR ccc eee eee eee APPX A P4 ANALOG SIGNAL 1 OUTPUT CONNECTOR 00000 05 APPX A P5 ANALOG SIGNAL 2 OUTPUT CONNECTOR 00 0000 APPX A P6 REMOTE START CONNECTOR 2 cece cee eee eee APPX A P7 TEMPERATURE SENSOR CONNECTOR cece eee eee eee APPX A P8 OVEN FLAP MOTOR CONNECTOR 0 0 c eee eee eee ees APPX A J 9 CRYOGENIC VALVE AND AUX HEATED ZONE CONNECTOR APPX A P10 AC POWER SUPPLY CONNECTOR ccc ee cece eee ees APPX A P11 ELECTRONIC FLOW SENSOR CONNECTOR 005 APPX A P12 EPC MPC PCB CONNECTOR cc cece cece eee ee APPX A P13 COMMUNICATIONS PCB CONNECTOR 0 ce eevee APPX A J 14 AUXILIARY CONNECTOR cee eee APPX A P15 WORKFILE EMULATION CONNECTOR 0 cece cece eee APPX A DISPLAY PCB vieveand caine ee etaee ia beara es APPX A 13 DETECTOR PCBS aaaaosssasnnnnssnssnnnnnsnnnnnnnnnnn APPX A 14 EPC PCB CONNECTORS aaassasasssnnnnsnsssnnnnnan APPX A 15 EPC PRESSURE TRANSDUCER MODULE AP
83. CTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT Set the main power line switch to the off position RED O VISIBLE Disconnect the power cable from its receptacle IM n RR o Turn off all gas supplies E He EP Remove the four screws securing the rear cover to the instrument 5 Slide the rear cover towards the rear of the instrument oS N x 6 Remove the electronics carrier top cover by grasping itatthe rear and lifting until its catch releases the pulling it toward the rear of the instrument SCREWS 7 Remove the right side panel by removing four screws two each along its top and bottom edges er SCREWS ELECTRONICS CARRIER TOP COVER RIGHT SIDE PANEL CAUTION This procedure requires precautions against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument SVC 11 5 10 CAUTION When disconnecting a plug pull on the plug not on its wires Pulling on the wires may cause breakage Disconnect connector P10 from its receptacle on the main PCB by squeezing its ribbed sides while pulling the plug straight out of the receptacle Disconnect connectors J 26 and J 27 from their respective receptacles on the AC power sup ply PCB Rem
84. CTING HEATER AND TEMPERATURE SENSOR WIRING ON MAIN PCB BEFORE PERFORMING THIS PROCEDURE Allow time for the heated zones to cool INJ ECTION PORT COVER At the bottom of the inside the column oven remove the column and hardware associated with the inlet liner column liner nuts ferrules makeup gas adapter etc Cap the base of the inlet PRESS Remove the injection port cover by grasping its K COVER back edge and lifting it upward LID SHAFT Remove the two screws in the top of the inlet top cover these screws secure the inlet base weldment to the inlet top cover Use a Pozidriv screwdriver to remove the two screws securing the top cover to the instrument Lift the inlet top cover off of the inlet Remove any insulation from around the top of the inlet Lift the inlet enough to expose the heated block and heater sensor wiring CAUTION Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile SVC 6 11 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Carefully slide the heater and sensor cartridges out of the heated block portion of the inlet Slide the replacement heater and sensor car tridges into the inlet heated block of the inlet Carefully install the inlet into its inlet opening in the top of the instrument Replace any insulation that was rem
85. D NITROGEN PHOSPHOROUS NPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS Set the main power line switch to the off position Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool When the heated zones are cool turn off all gas supplies Remove the two screws securing the left side panel along its bottom edge Slide the left side panel towards the rear of the instrument and lift Disconnect plumbing fittings as necessary to remove the flow module from the instrument The hydrogen lines are painted red at their ends Remember which line is installed at each fitting draw a diagram if necessary SVC 3 14 RED O VISIBLE N UA 10 11 12 13 14 15 Remove two nuts securing the flow module to the mainframe one next to the pressure gauge and one at the lower edge of the module Remove the screw securing the flow module to the instrument flow carrier Once the flow module is clear of the instrument replace the flow control component desired CAUTION When connecting lines and fittings ensure that all o rings are properly installed Assemble the MPC components in the reverse order of disassembly Restore all gas supplies Leak check all installed fittings If the system is leak free install the left side panel and secure using two screws
86. D OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS NOTE This procedure applies to the packed purged packed split splitless and split only inlets Separate procedures exist for removal replacement of the PCOC Electronic Pressure Control EPC flow module and the PCOC Manual Pressure Control MPC flow module A separate procedure also exists for replacement of the split splitless capillary inlet solenoid valve Set the main power line switch to the off position Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool gt WwW N Ff When the heated zones are cool turn off all gas supplies 6 Remove the two screws securing the left side panel along its bottom edge 7 Slide the left side panel towards the rear of the instrument and lift 8 Disconnect plumbing fittings as necessary to remove the flow module from the instrument The hydrogen lines are painted red at their ends Remember which line is installed at each fitting draw a diagram if necessary SVC 3 5 10 11 12 13 14 15 16 Remove two nuts securing the flow module to the mainframe one next to the pressure gauge and one at the lower edge of the module Once the flow module is clear of the instrument replace the flow control component desired CAUTION oe When connecting lines and fittings ensur that all o rings are properly installed amp D In
87. DOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT 1 Set the main power line switch to the off position RED O VISIBLE lt A 3 Allow time for the oven and heated zones to cool R2 2 Disconnect the power cable from its receptacle 4 When the heated zones are cool turn off all gas supplies 5 Atthe bottom of the detector s to be removed inside the column oven remove the column and hardware associated with the detector s liner column liner nuts ferrules makeup gas adax SOLENOID VALVE oO SCREW 6 Ifthe detector is not going to be replaced with i new detector cap the detector base DETECTOR COVER 7 Liftthe hinged top cover at its front edge exposing the detector area 8 Remove the TCD detector cover by removing two screws one from each side of the detector cover 9 Ifthe detector is not going to be replaced with a new detector cap the TCD vent port on the top SVC 4 4 10 11 12 13 14 15 16 VENT of the detector This will not be required on a PORT series connected TCD Remove the electronics carrier top cover above the signal cable plugs and receptacles to expose the top edge of the TCD detector PCB ELECTRONICS CARRIER TOP COVER Disconnect the detector filament and delta t temperature sensor lea
88. E INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME PHOTOMETRIC FPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS 1 Setthe main power line switch to the off position RED O VISIBLE 2 Disconnect the power cable from its receptacle WAM KUL punue 3 Turn off the hydrogen air or oxygen and aux Sax iliary nitrogen supplies to the detector at the eS 9 flow control panel 4 Allow time for the heated zones to cool 5 Remove the thumb screw holding the detector cover to the top of the HP 5890 6 Facing the instrument rotate the detector cover to your right until the tab on the bottom left edge of the cover comes free 7 Raise the back of the cover and slide it towards 8 Liftthe detector top cover to expose the FPD detector weldment 9 Remove the two screws securing the left side panel along its bottom edge EETSIDE 10 Slide the left side panel towards the rear PANEL of the instrument and lift SVC 4 70 11 Release the extension spring securing the PMT assembly to its support bracket 12 Remove the photomultiplier tube PMT assembly and sulphur filter from the detector assembly and set en al SULPHUR FILTER y PMT ASSEMBLY 4 CHIMNEY AND BRACKETRY REMOVED FOR CLARITY 13 Remove th
89. E POWER CORD BEFORE WORKING ON THE INSTRUMENT 1 Set the main power line switch to the off position RED O VISIBLE SAIN 3 Allow time for the oven and heated zones to cool RY 2 Disconnect the power cable from its receptacle 4 When the heated zones are cool turn off all gas supplies 5 Atthe bottom of the detector to be removed inside the column oven remove the column and hardware associated with the detector s liner column liner nuts ferrules makeup gas adapter etc lt 0 aq vf INJ ECTION PORT COVER o 7 0 PRESS HERE TO FREE COVER 6 Remove the injection port cover by grasping its back edge and lifting it upward 7 Liftthe hinged top cover atits front edge exposing the detector area 8 Remove the 1 4 inch screw and washer securing the cover at its right side hinge point 9 Atthe lower right edge of the cover press from right to left until the right side hinge releases 1 4 INCH SCREW AND WASHER X LID SHAFT SVC 4 49 10 11 12 13 14 15 16 17 18 19 20 Remove the screw securing the ground strap to the hinged top cover With the lower right side of the cover pushed in lift the right side of the cover and slide itto the right to remove the top cover and lid shaft as a unit Remove the electronics carrier top cover by grasping it at the rear and lifting upwards until its catch releases then pulling it towards the rear
90. ECTRONICS CARRIER TOP COVER 20000 20000 es Ge In a 00070 I Yf 2 hii LET 200 1 ff 2 F D ZED SCREWS RIGHT SIDE PANEL 7 Disconnect the ignitor wire lead connector at the mating connection adjacent to the ignitor 8 Loosen the screws securing the clamps holding the detector PCB interconnect in place SVC 4 18 RED O VISIBLE aie ce DETECTOR PCB INTERCONNECT iy yell 10 11 12 13 14 15 16 CAUTION The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes or enclosures Remove the FID detector PCB by sliding it out of the main PCB at the right side of the instru ment Removal of the PCB will withdraw the interconnect from the thermal strap Use caution to avoid damaging the spring at the end of the interconnect Remove the three screws securing the collector mount to the thermal strap Remove the collector mount and collector as sembly as a unit At the bottom of the detector being serviced inside the column oven remove the column and hardware associated with the detector s liner column liner
91. EFS module in its compartment Secure the EFS module to the instrument using two screws Connect the plumbing to the EFS module Restore the gas supply to the instrument module both channels A and B and check for leaks at all installed fittings SVC 3 20 19 20 If the system is leak free replace the cover and panels and restore power to the instrument Check that the EFS is operational by displaying the flow rate for each channel A and B on the display board and also verify the value with a bubble flow meter It is suggested that the flow rate through each channel be different in order to verify that the plumbing for the two channels has not been cross connected If a flow rate value for either channel is displayed which does not correspond to the value ob tained using a bubble flow meter leak test the entire system If the system is completely leak free the EFS may require calibration SVC 3 21 Electronic Flow Sensor EFS Calibration Electronic flow sensor EFS calibration may be performed any time to ensure displayed flow rate accu rately represents real gas flow rate through the sensor The EFS is factory calibrated for four standard gases H2 He N2 and Ar CH4 within the flow rate range of 0 to 100 ml min This covers the majority of chromatographic applications Two situations where it would be appropriate to perform recalibration would be where a nonstandard gas is to
92. G LANCE RECEPTACLE EXTRACTION LANCE RESET aie ee DASH NUMBER RESET TIP MARKED HERE TOOL STOP LANCE RELEASE TIP a INSERT TIP LOCKING WERE TANGE BACK OF CAVITY BACK OF CONTACT HOUSING TYPICAL TYPICAL BACK OF HOUSING BOX TYPICAL Insert the plugin its receptacle P8 on the main PCB The plug is keyed and can only be in serted one way Replace the panels removed at the beginning of this procedure Connect any gas supplies disconnected in step 4 of this procedure WARHIHG SMALL PARTICLES OF DEBRIS MAY BE BLOWN OUT OF THE OVEN WHEN THE FLAP IS OPEN USE PROPER EYE PROTECTION WHEN OBSERVING THE OVEN Restore power to the instrument FLAPS THROUGH THE BACK PANEL TO PREVENT POSSIBLE BURNS AVOID COMING IN CONTACT WITH THE HOT AIR VENTED FROM THE OVEN 30 Observe the oven flaps through the back panel The oven flap motor should close the flap as sembly completely 31 Enter an oven temperature setting of 20_C The oven flap assembly should now open fully SVC 5 22 Replace Cryogenic Valve and or Nozzle A ae a a WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT Set the main power line switch to the off position RED O VISIBLE N JA Disconnect the power cable from its receptacle Allow time for the oven and heated zones to c
93. GES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS NTT CONNECTED AVOID A POTENTIALLY i WA IHL L DANGEROUS SHOCK HAZARD BY a lt L DISCONNECTING THE POWER CORD BEFORE N 9 WORKING ON THE INSTRUMENT Set the main power line switch to the off position Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool gt WwW N e When the heated zones are cool turn off all gas supplies 5 Atthe bottom ofthe inlet s to be removed in side the column oven remove the column and hardware associated with the inlet s liner column liner nuts ferrules makeup gas adapt er etc back edge and lifting it upward PRESS 7 Remove the two screws securing the left side HERE TO panel along its bottom edge COVER 8 Slide the left side panel towards the LID mi rear of the instrument and lift Val LEFT SIDE PANEL XK 28S l DaN 4 AND WASHER SVC 2 16 10 11 12 HEATER SENSOR CABLE ASSEMBLY Disconnect the Carrier Gas Inlet which termi nates either at the Forward Pressure Regulator for Manual Pressure Control or the PCOC Pro portional Control Valve for Electronic Pressure Control Disconnect the Septum Purge Outlet which ter minates at the PCOC Purge Regulator mounted inside the flow module Cap the base of the inlet inside the column oven Remove the auto injection assembly or op tional manual injection assem
94. HASE BOARD nacccccccccccc nee nes APX A 4 MAIN PCB CONNECTORS grotere rinena erar eee nee eee har EIN APX A 5 Pl KEYBOARD CONNECTOR cece cece tenn nes APX A 5 P2 DETECTOR A PCB CONNECTOR oe eects APX A 6 P3 DETECTOR B PCB CONNECTOR cece cece eee nee APX A 7 P4 ANALOG SIGNAL LOUTPUT CONNECTOR socca APX A 7 P5 ANALOG SIGNAL 2OUTPUT CONNECTOR socca APX A 8 P6 REMOTE START CONNECTOR chee cette APX A 8 P7 TEMPERATURE SENSOR CONNECTOR ccc cece eee eee eee APX A 8 P8 OVEN FLAP MOTOR CONNECTOR cc eee e cee eee es APX A 9 J9 CRYOGENIC VALVE AND AUX HEATED ZONE CONNECTOR APX A 9 P10 AC POWER SUPPLY CONNECTOR 1 cece cee eens APX A 9 P11 ELECTRONIC FLOW SENSOR CONNECTOR cece eee eee eens APX A 10 P12 EPC MPC PCB CONNECTOR occcccccccccr cce APX A 11 P13 COMMUNICATIONS PCB CONNECTOR cee cece eee APX A 12 J14 AUXILIARY CONNECTOR 2 ccc a APX A 12 P15 WORKFILE EMULATION CONNECTOR saccra APX A 12 DISPLAY POB scctettedechet died saeP ogren mr ee ees ad bea a APX A 13 DETECTOR POBS ccc ctiyasts duatiesiand eon o anne encom EE E a e a APX A 14 EPC PCB CONNECTORS gis cigcintede oh Giaatids atqape cy trae a a ieia dendes APX A 15 EPC PRESSURE TRANSDUCER MODULE acceca APX A 16 EPC PROPORTIONAL CONTROL VALVE 2 cece cece eens APX A 16 MPC PO Bure gingist menei non eines uke eles E eens ssid m baste E EE APX A 17 RS232C PCB CONNECTORS yas tirec dcialtcdie ine ty eh gdetiateoete ai
95. HP 5890 SERIES Il Gas Chromatograph Service Manual DA iekaro Manual Part No Edition 1 March 1991 05890 90320 Printed in U S A HP 5890 Series Il MAINTENANCE PROCEDURES Table of Contents SECTION 1 INTRODUCTION cccccccccacsecceeeceeeaesesasess SVC 1 1 HP 5890 SERIESII GASCHROMATOGRAPH saccra SVC 1 1 Electronic Troubleshooting 0c ccc cece tenet eee eens SVC 1 2 INTRODUCTMON tiie idea chctaldons epon he e e aE atta ecw ely R E EAA teas ancea ak SVC 1 2 Recommended Test Equipment cece cece ee tee eet eee SVC 1 2 PART A NON FUNCTIONING INSTRUMENT sca SVC 1 3 FUSEINTORMAION saranen ani hinds wad eanaad a fanless dene aces eon SVC 1 3 Power ON SQQUENCE seid ead oe see he eee meee eed EE o baa eeae EMR Pe eaa SVC 1 4 PARTB AUTOMONITOR MESSAGES ccc SVC 1 5 PART C OPERATOR INSTIGATED INDICATIONS 0 c cece eee SVC 1 8 Test Chromatogram Signal Output Test oes SVC 1 10 PART D FUNCTIONAL SYMPTOMS an SVC 1 11 SECTION 2 INLET COMPONENTS ceuecvaucceaeeueeeenaeeaes WE 2 1 REPLACING INLET COMPONENTS 2 ccc cece cece SVC 2 1 PACKED COLUMNINLET o cines och et eaaeiiicdeadearabicke engine OEN andes SVC 2 2 Remove R eplace Packed Column Inlet 0 cece cette eee ees SVC 2 2 SEPTUM PURGED PACKED COLUMNINLET cc eee eee SVC 2 5 Remove R eplace Septum Purged Packed Column Inlet ccc eee cece eee eee SVC 2 5 SPLIT ONLY CAPILLARY INLET 10 00 cece cece eee nee SVC 2 8
96. J 1 18 EXT_OUT10 J J J J J J J J 1 19 BDO 1 20 BD1 1 21 BD2 1 22 BD3 1 23 BD4 1 24 BD5 1 25 BD6 1 26 BD7 APPX A 13 DETECTOR PCBS J2 1 15V J 2 2 15V J 2 3 15V J 2 4 15V J2 5 STOJ A J 2 6 10V REF J 2 7 1Q J2 8 Al OF U16 2 J 2 9 STARTA J 2 10 A2 OF U16 2 J 2 11 gnd J 2 12 gnd J 2 13 gnd J 2 14 gnd j2 15 GND J 2 16 GND J 2 17 153 6KHz J 2 18 307 4KHz J 2 19 24V J 2 20 2Q J 2 21 24V J 2 22 4 9152MHz J 2 23 5V J 2 24 5V APPX A 14 EPC PCB CONNECTORS BDO BD1 BD2 BD3 BD4 BD5 BD6 BD7 FEXT UMS he Reeth eae asa yer sty ee Decode to give A 5 addresses 3 35 67 99 A 6 for Input or Output 5V DGND for digital circuits DGND for digital circuits D240 240 Hz square wave POP power on pulse SGND for switching or analog circuits SGND for switching or analog circuits 24V 24V 24V 24V ALARM RELAY ALARM RELAY ALARM RELAY ALARM RELAY 24VDC CHANNELA BPR ENABLE VALVE 24VDC CHANNEL B BPR ENABLE VALVE 15VDC ALARM BUZZER DRIVE 5VDC GND common for 2 amp 4 connects with 1 amp 3 on alarm common for 2 amp 4 disconects from 1 amp 3 on alarm eo om ip P_SENSA A pressure sensing 15VDC 5VDC ACOM P_CNTLA 1I5VDC SHEILD APPX A 15 P3 1 P_SENSB B pressure sensing P3 2 15VDC P3 3 5VDC P3 4 ACOM P3 5 P_CNTLB P3 6 I5VDC P3 7 SHEILD EPC PRESSURE TRANSDUCER MODULE
97. J1 11 ACGND J 1 12 ACGND J 1 13 24V j1 14 24V j1 15 3VAC fused F1 J 1 16 3VAC fused F1 j1 17 3VAC fused F1 J1 18 3VAC fused F1 J 1 19 3VAC fused F1 J 1 20 3VAC fused F1 J1 21 3VAC fused F2 J 1 22 3VAC fused F2 J 1 23 3VAC fused F2 J 1 24 3VAC fused F2 J1 25 3VAC fused F2 J 1 26 3VAC fused F2 APPX A 24 Manual Part No 05890 90320 G HEWLETT PACKARD Printed on recycled paper This product is recyclable Hewlett Packard Company Printed in USA 3 91 VALVE PCB CONNECTORS fet 24V J1 2 PURGE A J1 3 PURGE B J1 4 GROUND J15 120VAC J1 6 120VAC J1 7 120VAC 1 8 GROUND 1 9 VALVE A J 1 10 VALVE B APPX A 25
98. Line Voltage is provided to the instrument the following events should occur when the instrument s Line Power Switch is placed in its ON position Main Transformer T1 primary winding is energized fused by F2 on AC Board or F1 amp F2 if split phase Refer to Section 9 of the IPB portion of this document for main PCB information The three secondary windings 3 VAC 40 VAC and 120 VAC of T1 are energized All are fused on the Main Board These voltages arrive on the main board through connector 10 Refer to appendix A of this document for all connector information The 40 VAC is rectified and divided to produce 24 VDC and 15 VDC From these DC supplies the 10 VDC the 5 VDC and the Master Oscillator for clocks begin to function As these other supplies begin the POWER ON PULSE and the CPU portion of the circuitry begin to initialize first themselves and then through the Data Bus and other portions of the instrument One of the initializations that occurs through the Data Bus is in the Triac Control section to produce the control signal for K3 zone power relay on the Main Board and the signal for K1 oven contactor on the AC Board K3 relay allows distribution of the fused 120 VAC secondary from the Main Transformer K1 power contactor on the AC Board allows line power distribution to the Oven Fan Motor and to the Oven Heater Triac circuit Note that the oven fan will run as long as power is allowed under software c
99. MPONENTS Power supply components include the power supply PCB the power supply transformer the power switch and the power cable Removal and installation instructions for all of these components are found on the following pages Specific part numbers are not given in this section For all replacement part numbers refer to Section 8 of the IPB portion of this document Oven Assembly This document is not meant to provide instruction for first time installation of the different power supply options discussed Add on sheets exist for just this purpose and should be referenced when per forming a first time installation TABLE OF CONTENTS REPLACING POWER SUPPLY COMPONENTS SVC 1 l Remove Replace Power Supply PCB 0 cece eee eee SVC 11 Remove Replace Power Supply Transformer 0000 0 00 SVC 11 Remove Replace Power Switch ccc eee cee e etn eet neeee SVC 11 Remove Replace Power Cable 0 ccc cece eect e teen n eens SVC 11 SVC 11 1 Remove Replace Power Supply PCB WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT 1 Set the main power line switch to the off position RED O VISIBLE 2 Disconnect the power cable from its receptacle lt lt AN ae 3 Turn off all gas supplies 4 Remove the four screws securing the rear cove
100. N GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS 1 Setthe main power line switch to the off position RED O VISIBLE 1 UULU 2 Disconnect the power cable from its receptacle lt 5 MN IN 3 Turn off the hydrogen air or oxygen and aux iliary gas supply to the detector by means of the manifold on off valves 4 Allow time for the detector module to cool 5 Remove the thumb screw holding the detector cover to the top of the HP 5890 6 Facing the instrument rotate the detector cover to your right until the tab on the bottom left edge of the cover comes free 7 Raise the back of the cover and slide it towards the rear of the instrument SVC 4 66 8 Remove the extension spring holding the PMT assembly to the support bracket 9 Remove the PMT assembly by pulling it toward the rear of the instrument 10 Remove the sulphur filter from the flange adapter SULPHUR FILTER y PMT ASSEMBLY 4 CHIMNEY AND BRACKETRY REMOVED FOR CLARITY Use care during disassembly of the detector block assembly in order to prevent possible damage to the quartz windows 11 Remove the o ring from the flange adapter 12 Remove the four screws securing the flange ring and flange adapter to the stainless steel cou pling This will free the second heat shield window and two o rings Use care to top the com ponents from dropping out of the flange adapter 13 Tip
101. ND VISUAL INSPECTION SHOULD BE MADE AS WEAR OR USE COULD CAUSE LEAKS TO DEVELOP THESE LEAKS MAY OCCUR IN THE INTERIOR OF THE VALVE BOX AND BE CONCEALED FROM THE OPERATORS VIEW All standard liquid sample valves have 1 16inch fittings and are classified by the sample size of the in Stalled rotor 0 2ul 0 5ul or 1 0ul capacity The two types of valves available are standard or low pres sure 1000 psig and high pressure 5000 psig in the four port single purpose liquid sampling valve SVC 7 11 Whenever a liquid sample valve is used an adjustable restrictor is employed on the sample outlet line to maintain internal sample pressure and thereby keep a compressed gas liquefied WARHIHG THE LIFE OF AN LSV IS SHORTENED IF NOT USED WITHIN ITS SPECIFIED PRESSURE AND TEMPERATURE RANGES HIGHLY DANGEROUS LEAKS CAN OCCUR IF THE VALVE BOX TEMPERATURE EVER EXCEEDS THE LIMITS LISTED IN TABLES 2 4 AND 2 5 LSV Temperature Range Temperature Range From To From To Ambient 80_C Ambient 100_C Ambient 150_C Ambient 175 _C Pressure Limit PSIG PSIG 5000 1000 400 300 SVC 7 12 Troubleshooting and Maintenance Chromatographic Symptoms Troubleshooting valves and their related plumbing is primarily a matter of systematic checking and veri fication of unimpaired mechanical operation of any moving part This requires an understanding of how the valve functions internally and how the plumbing is configured A plumbing diagram is essentia
102. ONNECTED AVOID A POTENTIALLY puu DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT Set the main power line switch to the off position Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool gt e WN e When the heated zones are cool turn off all gas supplies 5 Remove the electronics carrier top cover by grasping itatthe rear and lifting upwards until its catch releases then pulling it towards the rear of the instrument 6 Remove the rightside panel by removing four screws two each along its upper and lower edges y SCREWS or ie a RIGHT SIDE ELECTRONICS m PANEL CARRIER TOP COVER SCREWS This procedure requires precautions against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument NOTE Depending upon the type of communications PCB installed there may be one or more connecting cables installed which must be disconnected before PCB removal 7 Ifa non buffered INET PCB buffered INET PCB or HPIB RS 232 C PCB is installed discon nect the INSTRUMENT NETWORK INET IN and OUT cables from their connectors on the communications PCB SVC 10 2 8 10 11 Y 40133130 4 40133130 Ifan HPIB RS 232 C communications PCB is installed free
103. PPER CELL re aA WELDMENT LOWER HEATED BLOCK BOTTOM INSULATION 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 Carefully slide the heater and temperature sensor cartridges out of the block The sensor en ters the block from the top The heater enters from below Slide the replacement heater and sensor cartridges into the heated block Install the lower heated block in its mounting position Secure the lower heated block to the instrument using two screws Install any removed insulation in the lower heated block Place the detector weldment in the lower heated block Install the upper heated block on the weldment Secure the upper heated block and detector weldment to the lower heated block using two screws Remove the cap from the base of the detector inside the column oven Carefully slide the ECD cover over the anode shaft and anode and install it on the detector Slide the locking tab on the ECD cover forward capturing the cover over the anode shaft of the cell weldment Tighten the locking screw on the ECD cover Connect the cell collector lead from the cell anode to the PCB interconnect Position the detector cover over the detector Secure the detector cover to the instrument with a screw Install any hardware removed in step 2 of this procedure liner column liner nuts ferrules makeup gas adapter etc Connect the purge and exh
104. PTIONAL MANUAL INJ ECTION ASSEMBLY S E SEPTUM DUCKBILL T SEPTUM INSERT lt PCOC INSERT A SPRING t s pr AIR DEFLECTOR NS HEATER SENSOR JNN CABLE ASSEMBLY QS INSULATION _ CAVITY SLEEVE i b screw SVC 6 16 10 11 12 13 14 15 16 17 18 19 20 21 Remove the air deflector using a Pozidriv screwdriver to remove the screw securing the air de flector to the inlet weldment Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile Carefully slide the heater and sensor cartridges out of the heated block portion of the inlet Carefully slide the heater and sensor cartridges into the heated block portion ofthe inlet Install the air deflector and secure it to the weldment using one screw Install the injection assembly septum PCOC insert spring and insert the injection assembly secures the other items to the inlet weldment Remove the cap plug from the end of the inlet Install the liner and all other hardware removed in step 2 Restore the supply gas pressure Install the right side panel and secure using two screws Install the electronics carrier top cover Slide the rear cover on to the instrument Secure the rear cover to the instrument by installing and tightening four screws Install the injection port cover Restore all gas supplies Restore power to the i
105. PTOMS cece cece SVC 1 1 Electronic Troubleshooting INTRODUCTION This section is intended to aid the operator and service engineer in the troubleshooting process i e of going from symptom to cause It has been subdivided into four subsections by type of symptom Part A covers the most obvious indications of problems The instrument apparently generally when first turned on doesn t work at all NON FUNCTIONING INSTRUMENT Part B includes the symptoms that can appear as a visual indication or message on the front of the keyboard display module These messages are a result of the instrument s extensive automonitoring system AUTOMONITOR MESSAGES Part C discusses the visual information that the operator can instigate and use as part of the trouble shooting process These visual indications are normally not available unless specifically requested by the operator OPERATOR INSTIGATED INDICATIONS Part D contains symptoms other than those that appear on the visual display that indicate a possible problem Typically these types of symptoms can be associated with a specific functional area of the instrument FUNCTIONAL SYMPTOMS Electrical Safety Precautions In all nonelectrically oriented sections of this manual the standard Hazardous Voltage Warning strongly recommends turning off all of the power to the instrument However this section as well as most of Service Section requires that some electrical measure
106. PXA APPX A 1 EPC PROPORTIONAL CONTROL VALVE ccuuueas APPX A vie Wee ee eee er eT eT eee ee Cree APPX A RS232C PCB CONNECTORS ceccceeeceneenenneeee APPX A INET PCB acc crssseneserua octane datcaainees APPX A BUFFERED INET PCB cece c nee c cnet eee e eee APPX A 20 DICE PCB sxc csi eee an eeea tes eaee ena wena eaeee APPX A lal DICE CONNECTOR PCB usscceeeccueenceneenenneene APPX A 22l ELECTRONIC FLOW SENSOR MODULE sccuuees APPX A VALVE PCB CONNECTORS aasssassannnnssnsssnnnanaa APPX A 25l APPX A 2 AC POWER PCB CONNECTORS 120VAC BOARD Pl P2 P3 P4 P5 LINE CORD NEUTRAL LINE CORD PHASE 1 OVEN HEATER NEUTRAL oven triac controlled OVEN HEATER PHASE 1 OVEN TRIAC ANODE 1 OVEN TRIAC ANODE 2 OVEN TRIAC GATE GND OVEN CONTROL to pulse transformer and oven triac gate K1 OVEN CONTACTOR CONTROL MAIN POWER SWITCH PHASE 1 NC MAIN POWER SWITCH NEUTRAL OVEN FAN MOTOR NEUTRAL OVEN FAN MOTOR NEUTRAL OVEN FAN MOTOR PHASE 1 OVEN FAN MOTOR PHASE 1 220VAC SINGLE PHASE BOARD P1 P2 P3 P4 P5 P6 P7 P26 1 P26 2 P26 3 LINE CORD NEUTRAL LINE CORD PHASE 1 OVEN HEATER NEUTRAL oven triac controlled OVEN HEATER PHASE 1 OVEN TRIAC ANODE 1 OVEN TRIAC ANODE 2 OVEN TRIAC GATE GND OVEN CONTROL to pulse transformer and oven triac gate K1 OVEN CONTACTOR CONTROL APPX A 3 MAIN POWER SWITCH PHASE 1 NC MAIN POWER SWITCH NEUTRAL OVEN FAN MOTOR NEUTRAL
107. Pa 1 to 2 psi drop during a 10 minute period 5 If no leak is indicated actuate all valves and repeat steps 2 through 4 6 Ifa leak does show up try to pinpoint the source with a soap bubble technique Do not assume the leak must exist only at a valve Often plumbing connections such as unions or bulkhead fittings are at fault See Valve Box Top Assembly Removal in this section if exposing the valve system is necessary 7 Ifthe leak cannot be found easily divide the system in half and repeat the pressure check Continue dividing by halves and pressure check until the leak is isolated SVC 7 8 Sampling Valve System Introduction An installed valve system is an integral part of the HP 5890 SERIES Il GAS CHROMATOGRAPH To prolong the life of the valve system avoid the following operational abuses D Exceeding the specified temperature and pressure ranges D Plugging a valve with column packing or sample precipitation D Scoring of valve surfaces with column packing or particulates in liquid or gas sample D Contaminating the system with samples noneluting materials or poor quality support gases Valves Valves are composed of two basic assemblies a body and a rotor M ultipurpose Valve Ports Low Temp High Temp 6 0101 0629 0101 0584 10 0101 0630 0101 0585 Ports Volume Pressure Valve 4 0 2ul 1000 0101 0636 4 0 5ul 1000 0101 0637 4 1 0ul 1000 0101 0638 4 0 5ul 5000 0101 0639 The body assembly and its component pa
108. REW oils and or other contaminants COLLECTOR SVC 4 33 10 11 12 13 14 Use needle nose pliers inserted through the opening in the top of the detector cover to re move the collector by forcing it down from inside the top of the collector assembly Use needle node pliers to install the connector into the collector assembly from the bottom NPD COLLECTOR ASSEMBLY Align the collector to the collector assembly COLLECTOR in accordance with the illustration below BODY NPD COLLAR gt gt When properly aligned secure the collector inside the collector assembly by tightening two NOTE POSITIO OF COLLECTO set screws Place the detector cover over the detector base and secure it with the three screws previously removed Restore all gas supplies NPDACTIVE SO Restore power to the instrument SVC 4 34 Remove Replace NPD J et WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT NITROGEN PHOSPHOROUS NPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS 1 Setthe main power line switch to the off position RED O VISIBLE AAN 2 Disconnect the power cable from its receptacle L 3 Turn off all gas supplies 4 Liftthe hinged top cover at its front edge
109. RT COVER Lift the hinged top cover at its front edge exposing the detector area TOP COVER Remove the 1 4 inch screw and washer securing the cover at its right side hinge point Remove the ground strap from the hinged top PRESS cover by removing a screw HERE TO COVER At the lower right edge of the cover press from right to left until the right side hinge releases we With the lower right side of the cover lt N lt LID SHAFT N pushed in lift the right side of the cover y 7 and slide itto the right to remove the F cover and lid shaft as a unit Use a Pozidriv screwdriver to remove the three screws securing the detector cover to the thermal strap COVER ae SVC 6 24 10 11 12 16 17 19 Remove the detector top cover and all attached components from the thermal strap and set aside COLLECTOR DETECTOR ERCONNECT CLAMP SCREW The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When handling PCBs Printed Circuit Boards always place them in static control envelopes Disconnect the NPD bead power cable from the detector PCB by pulling it straight off Remove the NPD detector PCB by sliding it out of the main PCB at the right side of the instru ment Removal of
110. Remove R eplace Split Only Capillary Inlet n a SVC 2 8 SPLIT SPLITLESS CAPILLARY INLET 0 cece cece eens SVC 2 12 Remove R eplace Split Splitless Capillary Inlet 0 eee ee SVC 2 12 PROGRAMMABLE COOL ON COLUMNINLET PCOC e cece eee SVC 2 16 Remove Replace PCOC Inlet 2 6 ketenes SVC 2 16 INJECTION PORT COOLING FAN sacc SVC 2 20 Remove Replace Cooling Fan oo cece eee teen ee eee eee een nnn SVC 2 20 SECTION 3 FLOW PRESSURE CONTROL COMPONENTS SVC 3 1 FLOW PRESSURE CONTROL COMPONENTS cc cece eee SVC 3 1 PCOC EPC MPC Troubleshooting cece cece tee e eens SVC 3 2 Remove R eplace Inlet Flow Control Components cece eee SVC 3 5 Remove R eplace Split Splitless Capillary Inlet Solenoid Valve eee eee eee eee SVC 3 7 Remove R eplace Electronic Pressure Control EPC Components 00 SVC 3 11 Remove R eplace M anual Pressure Control MPC Components 0 0e eee SVC 3 14 Remove Replace EPC MPC Pressure Control PCB ee eee ees SVC 3 17 Typical Switch Settings for EPC MPC PCBS 2 icc eee eee SVC 3 18 Replace ElectronicFlowSensorModule cc cece eee eee eee eens SVC 3 19 Electronic Flow Sensor EFS Calibration cece cee eee SVC 3 22 Setting the ZERO Calibration Valle eee teens SVC 3 22 SVC TOC 1 Setting the GAIN Calibration Valle ouaaa SVC 3 23 Entering Specific ZERO and GAIN Values ouic ee eee SVC 3 24 Replacing R epairinga F l
111. SVC 4 14 7 m TO REPLACE COLLECTOR ASSEMBLY AS A UNIT a b Remove the knurled connector nut from the collector housing Remove the spring washer from the ignitor x castle OPTIONAL PTFE CHIMNEY Lift the ignitor castle off of the collector body 99 lt COLLECTOR NUT O SPRING WASHER Lift the upper collector insulator off of the IGNITOR CASTLE collector body o a ONITOR GLO PLUG UPPER COLLECTOR v5 EMBLY INSULATOR ap aS og Fx j aya DB DIODE BRIDGE GE ASSEMBLY INSULATOR lt g COLLECTOR SPANNER NUT 7 lt amp SCREW Lift the collector body from the collector housing lt COLLECTOR HOUSING Install a new collector body in the collector housing Install the upper collector insulator on the connector body Install the ignitor castle onto the collector body Install the spring washer on the ignitor castle Install the collector nut over the ignitor castle and spring washer and onto the collector housing hand tight If employed install the optional PTFE chimney Remove the electronics carrier top cover SCREWS Remove the right side panel by removing four screws two each along its top and bottom edges p SCREWS ELECTRONICS CARRIER TOP COVER RIGHT SIDE PANEL SVC 4 15 c Disconnect the ignitor wire lead connector at the mating connection adjacent to the ig nitor d Loosen the scr
112. Secure the detector cover to the thermal strap with three screws Remove the cap from the base of the detector inside the column oven Install any hardware removed in step 5 of this procedure liner column liner nuts ferrules makeup gas adapteretc Disconnect any tubing attached to the detector exhaust vent tube Plug the detector exhaust vent tubing Restore supply pressure and check for leakage at the column and makeup gas adapter fit tings 49 50 51 52 53 54 55 If no leaks exist shut off the supply pressure Remove the plug from the detector exhaust vent Install the right side panel and secure using four screws Install the electronics carrier top cover Install the hinged top cover and secure using a screw and washer Connect the ground strap to the hinged top cover using a screw Restore power to the instrument SVC 4 52 ELECTRON CAPTURE DETECTOR G1223A G1224A VERSIONS Remove Replace ECD Cells Weldment and or Heated Block G1223A G1224A Versions HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT 1 Set the main power line switch to the off position RED O VISIBLE SAIN 3 Allow time for the oven and heated zones to cool RY 2 Disconnect the power cable from its receptacle 4 When the heated zones are cool turn off all gas supplies 5
113. Shroud Assembly ccc cece eee e eee e eet SVC 5 3 Replace Oven Heater Element cece cece teeta SVC 5 7 Replace Oven Temperature Sensor 1 eee tenet ees SVC 5 11 Replace Oven Fan and or Oven Fan M otor cece cece cece eee eee eee e eens SVC 5 15 Replace Oven Flap M otor 1 ccc cect cece ete ene eee SVC 5 19 Replace Cryogenic Valve and or Nozzle ieee eee eens SVC 5 23 Calibrate Oven Temperature 2 0 cece eee eee SVC 5 29 SECTION 6 ZONE TEMPERATURE ccccceeueceeeenee een OVC 6 REPLACING TEMPERATURE CONTROL 1 cece cece eens SVC 6 1 COMPONENTS SVC TOC 2 ZONE TEMPERATURE TROUBLESHOOTING eee cece eee SVC 6 3 Remove R eplace Inlet Detector and Valve BOX oaaae SVC 6 4 H eater Sensor C able A ssemblies Disconnect Connect H eater and Temperature Sensor wk kee eee eee SVC 6 4 Wiring on Main PCB Remove R eplace Inlet Zone Heater and Sensor Cartridges cc cece eee eee SVC 6 9 Remove R eplace Packed Column Inlet H eater and Sensor Cartridges SVC 6 9 Remove R eplace Septum Purged Packed Column Inlet 0 eae SVC 6 11 H eater and Sensor Cartridges Remove R eplace Split Splitless Split Only Capillary Inlet 0 SVC 6 13 H eater and Sensor Cartridges Remove R eplace PCOC Inlet H eater and Sensor Cartridges eee eae SVC 6 16 Remove R eplace D etector Zone H eater and Sensor Cartridges ccc eee ee eee SVC 6 18
114. TATUS run NOT READY FINAL TIME Observe the alphanu meric display as the in strument performs an internal self diagnostic integrity check to en sure that the instrument shows expected normal displays OVEN RAT INITIAL TIME ACTUAL SETPOINT TIEISITII INIG STTIGINJATE TPIA TIH STATUS RUN NOT READY OVEN ACTUAL SETPOINT PPHAISISTE D IS EICIF TEISITI STATUS RUN NOT READY FINAL TIME INITIAL TIME OVEN INITIAL TIME FINAL owo T TME SVC 11 10 Test of display elements all alphanumeric and LED elements are lit 5890 Series II memory test in progress 5890A Self testing in progress LEDs off except possibly NOT READY Message indicating normal termination of diagnostic tests after power restoration User setpoints remain in force LEDs off except possibly NOT READY Remove Replace Power Cable WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT 1 Set the main power line switch to the off position RED O VISIBLE 2 Disconnect the power cable from its receptacle lt lt AN ae 3 Turn off all gas supplies 4 Remove the four screws securing the rear cover to the instrument 5 Slide the rear cover towards the rear of the instrument CAUTION Thi
115. Temperature Ranges for Liquid Sample Valves 1 16inch Teflon rotor valves 0to 175 degrees C 1 16inch polyimide rotor valves L00to 300 degrees C Adjustable restrictor valves ambientto 175 degrees C The HP 5890 was designed to accept valves heated in their own compartments because valves operate best at a constant temperature Itis important to realize that when a valve is inside a gas chromato SVC 7 10 graph oven during a temperature programmed run the valve temperature can lag behind the pro grammed oven temperature by as much as 20 degrees depending on the rate employed The mass of the programmed valve is responsible for this lag For this and other reasons gas chromatograph oven mounted valves are not offered on the HP 5890 An actual 6 port valve viewed from the actuator side is illustrated in Figure 2 4 A functional two di mensional diagram representing the same valve is shown in Figure 2 5 Note that with this type of diagram not only the external ports are drawn but rotor grooves are easy to see The transverse grooves appear as curved lines Note the change in the port to port connec tions by the grooves when the valve rotor is moved from the left stop to the rightstop Also note that the rotor grooves move but the ports do not Figure 2 6 Illustrates a Simplified Valve Diagram Note that the essential valve features are not lost namely the index pin stops ports and grooves This is
116. UBE SULPHUR FILTER PMT ASSEMBLY 4 CHIMNEY AND BRACKETRY REMOVED FOR CLARITY 8 Remove the drip tube from the exhaust tube atthe top of the detector SVC 6 34 10 11 12 13 14 15 16 17 18 19 Remove the exhaust tube from the detector using a 9 16 inch wrench Remove the chimney assembly by removing the two screws securing itto the chimney back CHIMNEY Loosen the three screws which secure the l io S screw clamp which secure the detector to the chim ney back Use a 9 16 inch wrench to loosen the brass nut Di holding the weldment exit tube to the jet weld P ment It will be necessary to hold the jet assem bly with a 1 2 inch wrench to prevent rotation ren ER SENSOR OPENINGS Handle the heater and sensor cartridges with care to prevent breakage The cartridges CLAMP particularly the smaller sensor cartridge are AA fragile Pull the heater and temperature sensor car tridges from the detector weldment assembly Carefully lift the detector vertically from the transfer tube so as notto damage the fused silica liner CAUTION Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile Remove the second heater cartridge from the lower heater block Install the replacement heater cartridge in the lower heater block lt a HEATER CARTRIDGE Install the assemble
117. URCE BEFORE REPLACING ANY FLOW COMPONENTS Set the main power line switch to the off position RED O VISIBLE Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool ac 5 i ES When the heated zones are cool turn off all gas supplies 5 Remove the electronics carrier top cover ELECTRONICS CARRIER TOP COVER gt SCREWS 6 Remove the right side panel by removing four screws two each along its top and bottom edges SCREWS SVC 9 2 7 Disconnect any signal cables installed at the connectors on the top of the main PCB SIGNAL CABLE CONNECTORS DETECTOR B DETECTOR a te The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes or enclosures SVC 9 3 8 Remove detector PCB s optional communications interface PCB and optional EPC Electronic Pressure Control or MPC Manual Pressure Control interfcae PCB if installed Refer to section 4 of this manual for information on removal and installation of detector PCBs Refer to section 10 of this manual for information on removal and installation of Communications interface PCBs Refer to s
118. URE SENSOR WIRING ON MAIN PCB BEFORE PERFORMING THIS PROCEDURE Allow time for the oven and heated zones to cool Remove the two screws securing the valve box top to the valve box bottom If any micrometering needle valves are installed remove the nut s securing them to their mounting bracket s Remove the two screws securing each installed micrometering needle valve bracket to the valve box top Ensure that there is enough slack in the tubing running from the valve box into the oven to allow lifting of the valve box Use a 1 4 inch wrench to remove the standoffs securing the valve box to the top of the instru ment Lift the valve box at the rear Pull any securing tape from around the heater and temperature sensor cables Remove the heater and sensor cartridge s from the valve block s Install the replacement heater and VALVE BOX TOP cartridges into the valve block s Replace the securing tape around ment heater and sensor cartridges Secure the valve box to the instrurr the two standoffs previously remo Secure the removed micrometerinc valve brackets if any to the valve ing tw rews for h bracket GENO SE FOWs JO lea cl NUIaGKe MICROMETERING NEEDLE VALVE Secure any installed micrometerinc BRACKET valves to their corresponding brack using a nut Secure the valve box top to the vah bottom using two screws Install the rear cover on the instrum cure using four screws Install th
119. ZERO calibration value Setting the GAIN Calibration Value After the ZERO calibration value is set at zero flow rate through the given channel the GAIN calibration value must be set based upon a measured flow rate 1 At the keyboard press GAIN A or GAIN B is displayed followed by two values the observed flow rate through the channel and the current GAIN calibration value for the channel Connect the gas supply to the channel being calibrated DO NOT connectthe OUT fitting for the particular channel Using a Suitable flow measuring device accurate to better than 1 ml min connected at the OUT fitting for the given channel adjust flow through the channel so measured flow rate is ap proximately in the middle of the range to be used For example if the range of flow rates to be used is between 50 and 150 ml min measured flow rate should be adjusted to about 100 ml min D Presse to access the timer function D After obtaining the desired flow rate press Cc to return to set ting the GAIN value D EFS channel A is assumed Press if Channel B is being calibrated Allow ample time for the flow rate to equilibrate no drift should be observed Assuming no driftin measured flow rate note the flow rate value at the connected flow mea suring device Enter this measured value through the keyboard Measured Value 0 Gp Upon pressing CALIBRATING is displayed SVC 3 23 6 After a shorttime GAIN A or GAIN
120. a EA APX A 18 SVC TOC 4 PINS EST RC B ee seer A severe aie ing ah eine Date Pears deta de ah aes te edd ican rai a APX A 19 BUEEEREDIINET RGB ss i2 ci oN ates Sided dedi ti ca Arn a AA Ea th dean tre APX A 20 Di GESP C Bie minina eae a hota oi hci deal deta a AE EE N Mash ha nese ohs APX A 21 DICE CONNECTOR PCB cece diss eee ede A E E T nie a gens APX A 22 ELECTRONIC FLOW SENSOR MODULE cece eee APX A 24 VALVE PCB CONNECTORS as sdai discos ates ah anes ie SO aie APX A 25 SVC TOC 5 Section 1 INTRODUCTION HP 5890 SERIES Il GAS CHROMATOGRAPH This section is intended to help the technician isolate problems to a specific component or compo nents The HP 5890 Series II may be found in many different configurations with varying component options This complicates the process of providing detailed troubleshooting procedures for even gener al problems But by using the general troubleshooting techniques presented here along with the func tional diagrams found at the end of this section successful results should be achieved There are five inlet options and six detector options which may be encountered when servicing an HP 5890 Series II Gas Chromatograph as well as a wide variety of flow and pressure control components All of these common inlet and detector components are represented by the functional diagrams atthe end of this section When troubleshooting inlets detectors and or the flow pressure systems fold out
121. a value beyond these limits is entered the message CORRECTION TOO HIGH is displayed Assuming the battery protecting the HP 5890 Series II memory is functional the new delta calibration value remains in effect even if the instrument is switched disconnected from its power source or experiences a power failure SVC 5 29 Section 6 ZONE TEMPERATURE REPLACING TEMPERATURE CONTROL COMPONENTS The HP 5890 Series II uses heater cartridges to apply and temperature sensor cartridges to sense heat at the various heated zones inlets detectors and valve box if installed Replacement of a heater sen sor cable assembly which consists of the heater and sensor cartridges as well as the wiring connect ing them to the main PCB is accomplished by partial removal of the applicable heated zone compo nent In addition the heater sensor cable assembly must be disconnected from the applicable connectors on the main PCB Removal of the wiring from the connectors on the main PCB is covered first followed by instructions for removal of the heater and sensor cartridges from the heated zone com ponents Ifa TCD detector is installed a delta t temperature sensor is used in addition to the standard tempera ture sensor cartridge Removal and replacement of the delta t temperature sensor cartridge is dis cussed after the procedures for standard heater temperature sensor cartridges The HP 5890 Series II also uses an optional cryogenic valve to cool t
122. abelled C which terminates ata fitting either atthe EFS a chemical filter or a mass flow controller mounted on the flow panel Disconnect the Septum Purge Outlet labelled P which terminates at the splitless solenoid valve normally closed fitting mounted inside the flow module Disconnect the Split Vent Outlet labelled S which terminates ata splitless solenoid valve normally open fitting mounted inside the flow module Remove any insulation from around the top of the inlet Detach and remove the insert assembly from the shell weldment using a inch wrench Detach and remove the tubing nut from the fit ting on the shell weldment Loosen the two screws securing the insulation cover inside the column oven Rotate the cover freeing it from its securing hardware and remove the cover and three pieces of lower insulation Remove the reducing nut flat washer and anealed seal using a 1 2 inch wrench Use a 3 4 inch wrench to loosen but not re move the retaining nut below the heated block Use a Pozidriv screwdriver to remove the two screws securing the inlet to the instrument Gently pull the inlet up and out of its instrument cavity Remove the retaining nut loosened in step 18 Slide the heated block off of the shell weld ment SVC 2 9 SEPTUM SHELL WELDMENT PURGE SS jal INSERT lt ASSEMBLY Coe eS ea SS ES SEE OS SESE M RETA O
123. able ground Failure to heed this caution may result in damage to the instrument 5 Free the keyboard connector J 1 from connector receptacle P1 on the main PCB by releasing the locking tabs one on either side of the connector receptacle CAUTION When disconnecting a plug pull on the plug not on its wires Pulling on the wires may cause breakage 6 Remove connector J 1 from connector receptacle P1 by carefully pulling it straight out SVC 8 3 10 11 12 13 NOTE It may be necessary to remove the detector PCB from the a position on the main PCB in order to access the locking tabs at the top of the display PCB assembly Refer to Section 4 of this document for information on the removal of detector PCBs Reach behind the display PCB assembly and depress the two locking tabs which secure the assembly at the top to the electronics bezel LOCKING While depressing the locking tabs on the dis play PCB assembly tilt the top of the display PCB assembly forward away from the front of the instrument Remove the display PCB assembly from the instrument NOTE The display PCB assembly may be replaced as a unit or the individual pieces which make it up may be ordered If the entire display PCB assembly is to be replaced go to step 15 Remove the four screws securing the display PCB to the keyboard bezel Remove the display PCB from the keyboard bezel ALIGN HERE Remove the suspect co
124. ain PCB at the right side of the instru ment Removal of the PCB will withdraw the interconnect from the thermal strap Use caution to avoid damaging the spring at the end of the interconnect Use a Spanner wrench part no 19301 00150 to remove the base spanner nut from the detec tor weldment Remove the thermal strap by removing the five screws securing it to the instrument Remove the two screws securing the detector weldment to the instrument Slide the insulation plate out from over the de tector weldment If the detector is to be reused cap the detector weldment at its upper opening using a detec tor cap and at its lower opening inside the col JET umn oven A BASE SPANNER NUT Remove the insulation around the detector O lt weldment to expose the two screws securing THERMAL STRAP the weldment to the instrument INS ULATION Lift the base up enough to expose the heated block heater and sensor cartridge wires Carefully slide the two cartridges out of the block The smaller of the two cartridges is the sensor and must be handled gently in order to prevent breakage mn SVC 4 43 30 31 32 33 34 35 36 37 Ifa PCOC fan is installed remove the back cov er of the instrument by removing four screws and sliding the cover off of the rear of the in strument FAN If installed remove the PCOC fan cover to allow SHROUD removal of the tubing attached to the detector
125. ally unrelated to the valve may exhibit similar symptoms Impure carrier gas i e containing water can cause extraneous peaks Locating Leaks Leak checking the plumbing involved in a valve configured system must be done carefully and me thodically Several methods may be used and the best choice will depend upon expediency accessi bility and the magnitude of the leak Pressure Check The pressure check method will indicate but sometimes not isolate a leak in the flow path Since this method does not necessarily isolate the leak other leak check methods may be needed to locate the leak specifically Note Each valve in a system has two flow paths ON and OFF A leak sometimes occurs in only one of these two positions Check both 1 Disconnect the detector from the valve system 2 Cap the valve system at its outlet and pressurize to 689 kPa 100 psi Allow 2 to 5 minutes for pressure to equilibrate Ifa flow sensor exists it should read zero flow 3 Turn the knob on the regulator counterclockwise until it turns freely The regulator is now turned off and the gauge is indicating pressure within the valve system 4 Generally the pressure will drop quickly for approximately 30 60 seconds then stabilize After this initial drop the gauge should not indicate more than a 6 89 to 13 78 kPa 1 to 2 psi drop during a 10 minute period 5 Ifno leak is indicated actuate all valves and repeat steps 2 through 4 6 Ifa leak
126. and heated zones to cool BAGR D E When the heated zones are cool turn off all gas supplies 5 Remove the four screws securing the rear cover to the instrument 6 Slide the rear cover towards the rear of the instrument 7 Remove columns and other hardware from a ONE ee any installed inlets and detectors which pre vents free access to the heater shroud a gt 8 Locate the four screws securing the oven en gF heater fan shroud and the two screws secur a ing the heater standoffs e 8 g 4 o 9 Remove the six screws and carefully swing the left edge of the shroud towards the front ofthe instrument SVC 5 7 FAN SHROUD HEATER STANDOFFS 1 an Shroud FAN SHROUD AS VIEWED FROM INSIDE OVEN 10 Note the position of the sensor so it may be replaced at the same location 11 Loosen the retainer clamp sufficiently to free the sensor HEATER ELEMENT HEATER ELEMENT AS VIEWED FROM REAR OF SHROUD 12 Remove the two screws securing the heater to its standoffs 13 At the rear of the instrument disconnect the two heater element leads at the AC power supply PCB HEATER ELEMENT CONNECTION TERMINALS 14 From inside the oven draw the heater leads through the opening in the rear of the oven 15 Remove the old heater element from the oven 16 To prepare a new heater note that it must be matched to a specific line voltage From Table 4 1 verify the unstr
127. anel by removing four screws two each along its upper and lower edges SCREWS or x RIGHT SIDE PANEL ELECTRONICS P CARRIER TOP COVER SCREWS CAUTION When disconnecting a plug pull on the plug noton its wires pulling on the wires may cause breakage The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or9300 0970 small connected to a suitable ground Failure to heed this caution ma N B RANPFORMER damage to the instrument TOF PART OF CONNECTOR Disconnectthe NPD bead power cable from the Say y TO NTD BEAD detector PCB by pulling it straight off s CONTROL BOTTOM PART k OF Use the side edge ofan AMP pin extraction lance tool 8710 1542 to remove the interlock ing side covers from the plug The plug is made up of two connectors on or the to EOEKING AE roid R Rhe other is forthe active con trol elemeTOOL CONNECTOR 5 5 NOTE ASSEMBLED 1 CONNECTORS SVC 4 38 LOCKING TAB CANCE DASH NUMBER RESET TIP MARKED HERE 10 11 12 13 14 15 16 17 18 19 20 21 Remove the control knob from the potentiome NPD DETECTOR ter assembly by pulling it straight off A PANEL Using a 1 0 mm hex wrench loosen the two hex screws located around the outside of the brass coll NED DETECTOR B PANEL Slide the dial indicator off the shaft o
128. aps from the detector base and the vent port When installing insulation use care not to plug the vent port If flow is interrupted while the TCD is on it will shorten its life dramatically Taking care notto block the vent port install insulation around the detector block Install the electronics carrier top cover Use caution not to crimp the filament and delta t sensor leads when installing the TCD detector cover Install the TCD detector cover and secure using two screws Install column and any other hardware removed in step 5 of this procedure Restore supply pressure Restore power to the instrument DETECTOR COVER Run a TCD Test Sample Chromatogram refer to HP 5890 Series Il Reference Manual to en sure that the system is operating properly If reversed peaks are experienced the most likely cause is reversed gas tubes connected to the TCD solenoid valve SVC 4 7 Remove Replace TCD Solenoid Switching Valve WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT 1 Set the main power line switch to the off position RED O VISIBLE SAN 2 Disconnect the power cable from its receptacle 3 Allow time for the oven and heated zones to cool 4 When the heated zones are cool turn off all gas supplies 5 Liftthe hinged top cover at its fro
129. ase STRAIN RELIEF With the strain relief compressed pull the pow er cable out of the opening in the AC power supply base Remove the strain relief from the power cabl Install the strain relief on the replacement pow er cable POWER CORD Compress the strain relief with a large pair of pliers With the strain relief compressed insert the power cable through the opening in the power sup ply base and seat the strain relief in the opening Install the power cable ground lead on the stud on the AC power supply base and secure with a locking nut Connect power cord lead push on type connectors J 1 WHITE lead and J 2 BLACK lead to their appropriate connectors on the AC power supply PCB Install the dual duct assembly on the installed mounting screw Install the upper mounting nut to secure the dual duct assembly to the outer oven shell Tighten the upper mounting nutusing a 7 mm nut driver Tighten the lower mounting screw using a Pozidriv screwdriver Slide the rear cover on to the instrument Secure the rear cover to the instrument by installing and tightening four screws Restore all gas supplies Restore power to the instrument SVC 11 12 28 Observe the alphanu meric display as the in strument performs an internal self diagnostic integrity check to en sure that the instrument shows the expected normal displays NORMAL INTEGRITY CHECK AT POWER ON ACTUAL SETPOINT E NENA aC a
130. aterand sensorcartridges with care prevent breakage The cartridges particularly the smaller sensor cartridge are fragile DELTA T SENSOR TEMPERAPUR Carefully slide the three cartridges out ofthe block The two SENSOR smaller cartridges are the sensors and must be handled gently in order to prevent breakage The delta ttemperature sensor cartridge is identified by its wiring which is connected to the top of the TCD detecto oo NOTE Replacement of the delta t temperature sensor is covered later in this section Install the replacement heater and temperature sensor and the old delta ttemperature sensor cartridges into the heated block Carefully install the detector securing it to the instrument with two screws Remove the caps from the detector base and the vent port When installing insulation use care not to plug the vent port If flow is interrupted while the TC D is on it will shorten its life dramatically Taking care notto block the vent port install insulation around the detector block CAUTION Use caution notto crimp the filament and delta tsensorleads when installing the TC D detector cover Install the TCD detector cover and secure using two screws Install column and any other hardware removed in step 2 of this procedure Install the right side panel and secure using two screws Install the electronics carrier top cover Slide the rear cover on to the instrument DETECTOR COMER Secure th
131. ause list gives the most commonly encountered problems and solutions found with valves LOSS OF SENSITIVITY OR EXCESSIVE DRIFT Several possible causes exist for overall deterioration of the chromatogram Contamination in the valve requires a thorough cleaning Internal leakage necessitates a complete disassembly and inspection of the mating surfaces Poor temperature control may require a full check of electronic and thermal components Lack of proper conditioning techniques columns etc Failure or deterioration of other components i e columns detectors etc LOSS OF PEAKS IN SPECIFIC AREAS OF THE CHROMATOGRAM Entire sections of chromatographic data can be lost due to a valve that does not rotate or one that rotates improperly Other than obvious component failures i e solenoid actuator etc generally improper ad justments and misalignments cause most problems Check that adequate air about 482 kPa or 70 psi is supplied Check if the valve is rotating at all If the valve rotates check for proper alignment of the actuator or mechanical binding or slippage of connect ing parts Check for blocked flow paths with valve in both positions BASELINE UPSETS Frequently baseline upsets may be seen on chromatograms when valves are switched These upsets are normally caused by pressure changes within the system injections of large volume samples or by chang ing the amount of restriction in the flow path These upsets will bec
132. aust vent tubes to the applicable tubes disconnected in step 14 Install the rear cover and secure using four screws Install the right side panel and secure using four screws Install the electronics carrier top cover Install the hinged top cover and secure using a screw and washer Connect the ground strap to the hinged top cover using a screw Install the injection port cover Restore all gas supplies Restore power to the instrument SVC 6 33 Remove Replace FPD Heater and Sensor Cartridges WARHIHG PERFORM THE PROCEDURE FOR DISCONNECTING CONNECTING HEATER AND TEMPERATURE SENSOR WIRING ON MAIN PCB BEFORE PERFORMING THIS PROCEDURE FLAME PHOTOMETRIC FPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS 1 Allow time for the heated zones to cool 2 Remove the thumb screw holding the detector cover to the top of the HP 5890 3 Facing the instrument rotate the detector cover to your right until the tab on the bottom left edge of the cover comes free 4 Raise the back of the cover and slide it towards the rear of the instrument 5 Liftthe detector top cover to expose the FPD detector weldment 6 Release the extension spring securing the PMT assembly to its support bracket 7 Remove the photomultiplier tube PMT assem bly and sulphur filter from the detector assem bly and setit esida lt lt EXHAUST T
133. away from the instrument b Liftthe autosampler tray from its mounting bracket and set it aside c Remove the autosampler bracket by removing the 6 screws securing it to the instru ment SVC 4 63 10 11 12 13 14 15 Remove the two screws securing the left side panel along its bottom edge Slide the left side panel towards the rear of the instrument and lift Remove the four screws securing the rear cover to the instrument Slide the rear cover towards the rear of the instrument Lift the hinged top cover at its front edge a EXHAUST TUBE exposing the detector area E CHIMNEY Remove the drip tube from the exhaust tube at a the top of the detector SCREW Remove the exhaust tube from the detector us ing a 9 16 inch wrench Remove the chimney assembly by removing P the two screws securing itto the chimney back Disconnect the ignitor wire lead connector at the mating connection on the detector weld ment by removing the screw which secures it to the glo plug assembly DETECTOR ASSEMBLY GLO PLUG ASSEMBLY DIODE BRIDGE LEAD SVC 4 64 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Trace the lead freeing it along its path to the diode bridge assembly Disconnect the diode bridge assembly spade lug ground cable from the instrument by loosen ing the screw that secures it Disconnect the diode
134. be used e g something OTHER than H2 He N2 or Ar CH4 or if flow rates in excess of 100 ml min are to be used EFS calibration requires setting two values for a given flow channel first the ZERO value defined with NO flow through the given flow channel and then the GAIN value calculated based upon a measured flow rate value WARNING IF CALIBRATION IS BEING PERFORMED FOR H2 OBSERVE PROPER SAFETY PRECAUTIONS TO PREVENT A FIRE OR EXPLOSION HAZARD Prior to performing the calibration procedure the following must be done D The instrument must be on for at least one hour for thermal equilibration of the EFS D Since gas flow through the channel to be calibrated will be interrupted detectors should be turned off particularly an NPD or TCD and the oven cooled to ambient temperature to protect columns DA flow measuring device is required accurate to better than 1 ml min D TheEFS is calibrated to measure volumetric flow at standard temperature and pressure Flows measured at ambient temperature with a bubble flow meter will have to be converted from ambient temperature and pressure to standard temperature and pressure Preparation 1 Access the EFS by removing the left side panel remove two screws along its lower edge slide the panel toward the rear of the instrument and then lift 2 Through the keyboard select CALIB AND TEST mode function 2 GED WG GAIN A is displayed followed by two values the observed flo
135. bly by rotating it counter clockwise Be careful not to loose the septum insert or PCOC insert spring which are installed under the injection assembly AUTO ASSE SEPTUM INJECTION MBLY OPTIONAL MANUAL INJECTION ASSEMBLY DUCKBILL QA SEPTUM PCOC INSERT SPRING CAVITY 13 Remove the air deflector using a Pozidriv screwdriver to remove the screw securing the air de flector to the inlet weldment SV C 2 17 CAUTION Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile 14 Carefully slide the heater and sensor cartridges out of the heated block portion of the inlet 15 Use a Pozidriv screwdriver to remove the two screws securing the inlet to the instrument 16 Lift the inlet enough to expose the heated block 17 If installed remove the cryo blast tube from the inlet weldment 18 Remove any insulation from around the inlet CAUTION Use caution to avoid sharp bends when bending tubing Sharp bends may crimp the tubing 19 If the inlet is to be replaced prepare the replacement inlet by pre bending its tubing into orien tations similar to that of the removed inlet 20 Replace any insulation that was removed from around the inlet SVC 2 18 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Bend the tubes running from the
136. bridge assembly from its connector at the FPD flow manifold Remove the diode bridge assembly from the instrument GROUND IGNITOR LEAD BRIDGE ASSEMBLY Install the replacement diode bridge assembly into the instrument Connect the diode bridge assembly to its connector at the FID flow manifold Connect the diode bridge assembly spade lug ground cable to the instrument by placing it beneath and tightening the screw that secures it Thread the ignitor wire lead along its path from the diode bridge assembly to the detector igni tor connector Connect the ignitor wire lead connector to the glo plug on the detector weldment and secure using a screw Install the chimney assembly over the detector weldment and secure using two screws Install the exhaust tube on the detector weldment through the opening in the top of the chim ney and tighten using a 9 16 inch wrench Install the drip tube on the exhaust tube Install the FPD cover on the instrument and secure using a thumbscrew Install the rear panel and secure using four screws Install the left side panel and secure using two screws Restore power to the instrument SVC 4 65 Clean Replace FPD Heat Shield Windows WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME PHOTOMETRIC FPD DETECTORS USE HYDROGE
137. by changing the amount of restriction in the flow path These upsets will become more of a problem when high sensitivity is required Addition of a fixed restriction downstream from the valve may help minimize the upset Changes in column length may also help reduce the upsets Fixed restrictors are used immediately before flame detectors to prevent flameout and are used in some instances to prevent pressure surges from damaging TCD filaments An adjustable restrictor needle valve can also be used where a matched restriction is desired but not for preventing pressure or flow surges SVC 7 13 Often confused with baseline upsets an offsetis a shift in the baseline that does not return quickly to the original level Baseline offsets may be caused by air leaks but more commonly are due to a change in gas purity or flow rate in the detector Poor carrier gas or improperly conditioned filters and traps should be suspected whenever offsets occur Extraneous Peaks Air peaks are sometimes seen in a chromatogram when leakage occurs because the valve rotor does notseal properly These leaks may not be detectable by using the soap bubble method If a leak is suspected but cannot be located with soap bubbles a pressure check will determine defi nitely if a leak exists Extraneous peaks can occur sometimes due to contamination or improper condi tioning of the valve If leaks are not apparent clean or condition the valve Obviously other causes tot
138. c dis play as the instrument performs an internal self diagnostic inte grity check If the self testing process does not complete successfully and or if a message other than PASSED SELF TEST eventu ally appears see Electronic Troubleshooting for diagnostic and troubleshooting informa tion NORMAL INTEGRITY CHECK AT POWER ON ACTUAL SETPOINT FINAL TIME STATU r S UN NOT READY ACTUAL SETPOINT I ITIEISITIHINIGI IMIE lMiulkiYi OVEN FINAL RA TIME INITIAL TIME STATU r S UN NOT e READY ACTUAL SETPOINT MEISIT INIG ISTHIGINTATET JrlAli inh OVEN FINAL RA TIME INITIAL TIME STATU S O RUN ACTUAL SETPOINT NOT EADY IPIAISISIEJD ISJE C F ilelSiil RA SVC 9 7 OVEN INAL TIME STATU S O RUN NOT EADY Test of display elements all alphanumeric and LED ele ments are lit 5890A memory test in progress 5890A Self testing in progress LEDs off except possibly NOT READY Message indicating normal termination of diagnostic tests after power restoration User setpoints remain in force LEDs off except possibly NOT READY Section 10 DATA COMMUNICATIONS COMMUNICATION INTERFACE COMPONENTS There are five possible data communication options which may be encountered in instruments found in the field The five options are Non
139. cause baseline drift and noise Install the detector top cover and all ETECTOR COVER attached components on the thermal strap COLLECTOR INTERCONNECT CLAMP SCREW 2S Remove the cap from the base of the detecto weldment inside the column oven Install the column and any other associated hardware removed in step 2 of this procedure Use a Pozidriv screwdriver to secure the detector cover to the thermal strap with three screws Install the rear panel and secure using four screws COVER Install the right side panel and secure using four screws 8 Install the electronics carrier top cover l l Install the hinged top cover and secure using a screw and washer Connect the ground strap to the hinged top cover using a screw Restore all gas supplies Restore power to the instrument SVC 6 27 Remove Replace ECD 19233A 19235A VERSIONS Heater and Sensor Cartridges PERFORM THE PROCEDURE FOR DISCONNECTING CONNECTING HEATER AND TEMPERATURE SENSOR WIRING ON MAIN PCB BEFORE PERFORMING THIS PROCEDURE Allow time for the oven and heated zones to cool es At the bottom of the detector to be removed 9 inside the column oven remove the column gt 0 and hardware associated with the detector s g z yi liner column liner nuts ferrules makeup gas g 8 2 adapter etc a 3 Cc Remove the injection port cover by grasping its back edge and lifting it upward Lift the hinged top cover at its fr
140. ce reset portion of the tool Insert the pins for the replacement fan into their appropriate locations in the plug making sure the locking lance on each pin seats into its hole through the side of the plug RECEPTACLE Gently pull on the wire to ensure that the pin is BOX TYPICAL locked in the connector LOCKING LANCE Insert connector P7 into its corresponding CAVITY receptacle on the main PCB Install the new fan and fan cover and secure using two screws Install the rear panel and secure itto the instrument using four screws TYPICAL Install the right side panel and secure using HOUSING four screws Install the electronics carrier top cover If removed install autosampler and associated bracketry Install the injection port cover Restore power to the instrument SVC 2 22 Section 3 FLOW PRESSURE CONTROL COMPONENTS FLOW PRESSURE CONTROL COMPONENTS Flow and pressure control components include pressure regulators pressure gauges mass flow con trollers capillary solenoid valves detector flow manifold blocks and the Electronic Flow Sensor EFS module There are many options available for the HP 5890 Series Il Maintenance procedures for the most common items found in the instrument Procedures are supplied to remove replace and or clean various subassemblies based on the current maintenance philosophy i e to allow replacement of the lowest level components applicable for a particular asse
141. cover using a screw Restore all gas supplies Restore power to the instrument SVC 6 30 Remove Replace ECD G1223A G1224A VERSIONS Heater and Sensor Cartridges PERFORM THE PROCEDURE FOR DISCONNECTING CONNECTING HEATER AND TEMPERATURE SENSOR WIRING ON MAIN PCB BEFORE PERFORMING THIS PROCEDURE Allow time for the oven and heated zones to cool Sa At the bottom of the detector to be removed inside the column oven remove the column S j and hardware associated with the detector s j yi liner column liner nuts ferrules makeup gas 9 8 2 adapteretc ar o ee 6 Remove the injection port cover by grasping its c back edge and lifting it upward Liftthe hinged top cover atits front edge exposing the detector area Remove the 1 4 inch screw and washer securing the cover at its right side hinge point At the lower right edge of the cover INJECTION PORT COMER press from right to left until the right side hinge releases TOP COVER Remove the screw securing the ground strap to the hinged top cover With the lower right side of the cover pushed in lift the right side of the cover and slide it to the right to remove the top cover and lid shaftas a unit PRESS HERE TO FREE COVER 1 4 INCH SCREW AND WASHER SS LID SHAFT SVC 6 31 10 11 12 13 14 15 16 17 18 19 20 21 Using a Pozidriv screwdriver remove the screw securing the detector top cov
142. crews Inspect the detector weldment in which the jet weldment will be installed If any evidence of damage or excessive contamination are ob served replace the detector weldment with a new one Press the jet weldment into the base of the de tector weldment NOTE During assembly of the detector always use new seals o rings gaskets and discard the old ones Install a new heat shield gasket on the detector weldment Install a new first heat shield window Assemble the heat shield disk stainless steel coupling and clamp to the detector weldment and secure using four screws and four lock washers Tighten screws evenly to ensure a gas and light tight seal Assemble the second heat shield window associated o rings new flange adapter and flange ring to the stainless steel coupling and secure using four screws Tighten screws evenly to ensure a gas and light tightseal Then back off all screws except the top one to allow clamping of the weldment to its support bracket Install the assembled detector weldment assembly vertically onto the transfer tube weldment being careful not to damage the fused silica liner Install the heater and sensor cartridges into the detector weldment SVC 4 74 44 45 46 47 48 49 50 51 52 53 Secure the weldment exit tube to the jet assembly with by holding the jet weldment with a 1 2 inch wrench and tightening the nut which secures the weldment
143. ctor TCD Connect the detector filament and delta t temperature sensor leads at their connector block on the detector PCB Use a small flat blade screwdriver to press each wire lead release located adjacent to each con nection while inserting the wire into the connector block FILAMENT GAS LEADS TY PE DELTA T SENSOR a N2 Ar LEADS He H2 FID CUAMDS Tighten the screws securing the clamps holding the detector PCB interconnect in place moenwunnee TD SVC 4 90 NPD ETECTOR COVER a Tighten the screws securing the detector COLLECTOR PCB interconnect clamps to the thermal OS le strap CAUTION NPD power control plugs installed in the wrong position will permanently damage the NPD detector PCB b Connect the NPD bead power cable from the detector PCB by pushing it straight in to the connector receptacle INTERCONNECT LAMP SCREW c Install the detector cover and secure using three screws 19233A 19235A ECD a Tighten the screws securing the clamps which hold the interconnect in place b Connect the cell collector lead from the PCB interconnect c Install the detector cover and secure using three screws G1223A G1224A ECD a Tighten the screw securing the detector PCB interconnect clamp to the thermal strap s Connect the cell anode lead from the PCB interconnect c Connectany tubing that was previously attached to the detector purge and vent tubes
144. ctronic Pressure Control EPC The MPC in an uncomplicated system consisting of 1 a manually adjustable forward pressure regulator which sets the pressure in the inlet and 2 a factory preset forward pressure regulator allowing 10 to 20 ml min to escape to vent pulling septum bleed with it Possible failures could include pluged restrictor in the inletto the FPR This would prevent the inlet from reaching pressure setpoint The FPR could be stuck open allowing the injection port to go to the same pressure as the source gas tank It could be stuck in the closed position preventing the injection point from reaching the setpoint Leaks in any of the tubing connections would also prevent the injection port from reaching or maintaining pressure setpoint Leaks atthe Septum Column fitting Septum Purge Control Column Head Pressure gage or Purge Vent restrictor could also make injection port pressure control difficult These leaks should be checked by capping off the injection port or suspected partto isolate it rather then using soap solution leak detection fluid The EPC uses a digitally controlled proportional control valve and electronic presssure transducer to perform the same functions as the MPC s manual forward pressure control and column head pressure gage One additional feature of the EPC is a bypass flow line designed to protect the column with a small flow 1 to 3 ml min in the event that the proportional control valve or electronics would fa
145. d Install the detector top cover and secure TOP COVER using one screw SVC 4 91 FPD a Connect the signal cable to its connector on the FPD detector PCB HIGH VOLTAGE CABLE b Connect the high voltage cable to its con nector on the FPD detector PCB 01009 98261 ED 23 Restore all gas supplies to the instrument 24 Install the right side panel and secure using four screws 25 Install the electronics carrier top cover 26 Restore power to the HP 5890 Series Il 3SVLIOA HOI SVC 4 92 Section 5 OVEN TEMPERATURE REPLACING OVEN TEMPERATURE CONTROL COMPONENTS Oven temperature control components include the oven the oven fan and motor the oven flap motor and the cryogenic valve if installed Removal and installation instructions for all of these components are found on the following pages Refer to page 20 of this section for information on troubleshooting the oven temperature control components Refer to Section 6 of the IPB for part numbers associated with the oven temperature control components Current maintenance philosophy suggests that the oven shroud assembly be replaced as a unit rather then replacing the heater element or sensor element individually Maintenance procedures have been included for both entire shroud replacement as well as individual part replacement in the event that the shroud assembly is not available in a timely manner etc Specific part numbers are not given in this s
146. d Block 19233A 19235A VErSIONS jose aca aac iodine od eutha aad Gade ak ada SVC 4 49 ELECTRON CAPTURE DETECTOR G1223A G1224A VERSIONS SVC 4 53 Remove R eplace ECD Cells Weldment and or H eated B lock GI223A G 224A VerSiONS sirr erreari Rica daw eee dt Aad wane diay wae SVC 4 53 Clean Anode ECD Cell Weldment G 1223A G 1224A Versions ee eens SVC 4 56 FLAME PHOTOMETRIC DETECTOR FPD 0c eee e cece eens SVC 4 58 Clean Replace Photomultiplier Tube PMT 0 cece cece teen ene SVC 4 58 Clean Replace FPD Filter 0 cic cece cece cece nee e teen tenet nee nn anne SVC 4 61 Remove ReplaceFPD Diode Bridge Assembly cece cece eee eee eee SVC 4 63 Clean Replace FPD Heat Shield Windows cece cece cents SVC 4 66 Replace FPD Jet Assembly and First Heat Shield Window cece eee eee SVC 4 70 Replace Fused SiliCa LINE sche edde decal sw kuotek Reds eee ene bed Oe on les SVC 4 76 Replace Detector Base Weldment ona 0 cece teen ees SVC 4 80 Adjust HIGH VONAGE sirien dacs onan ds dak dolar ead a ie daa aene SVC 4 85 REPLACING A DETECTOR PCB nassusteadsnehevaas erode ewee Ree Ress SVC 4 87 Remove Replace Detector PCB 0 kc cece eee tees SVC 4 87 SECTION 5 OVEN TEMPERATURE ceueceauceeaeeueueenaetaes WCE 5 1 REPLACING OVEN TEMPERATURE CONTROL cece cece eee ees SVC 5 1 COMPONENTS OVEN TEMPERATURE TROUBLESHOOTING 0 cece eee eee eee es SVC 5 2 Replace Oven
147. d and exhaust vent tube Install the shield over the thermal strap Depending on the detector s location it may be nec essary to bend the shield to remove and install it Avoid excessive bending as this will fatigue the metal shield shortening its life The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When handling PCBs Printed Circuit Boards always place them in static control envelopes Install the detector PCB atthe right side of the instrument This will feed the interconnect in to the detector clamps on the thermal strap Tighten the screws securing the clamps which hold the interconnect in place Connect the cell collector lead to the PCB interconnect Position the detector cover over the detector Secure the detector cover to the thermal strap with three screws Remove the cap from the base of the detector inside the column oven Install any hardware removed in step 2 of this procedure liner column liner nuts ferrules makeup gas adapteretc Install the rear panel and secure using four screws Install the right side panel and secure using four screws Install the electronics carrier top cover Install the hinged top cover and secure using a screw and washer Connect the ground strap to the hinged top
148. d by default If Channel B is to be calibrated instead press amp _ 4 Enter the desired ZERO calibration value Gp Note that alternately pressing or displays either the ZERO calibration value or the GAIN calibration value for the given channel A or B SVC 3 24 Replacing Repairing a Flow Manifold Block Each detector requires a flow manifold block for gas control There are various types of blocks de pending upon the particular detector and upon whether or not capillary makeup gas is also to be supplied to the detector WARKING HAZARDOUS VOLTAGES ARE PRESENT IN TARTS THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME IONIZATION FID AND NITROGEN PHOSPHOROUS NPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS 1 Setthe main power line switch to the off position 2 Disconnect the power cable from its receptacle 3 Allow time for the oven and heated zones to cool 4 When the heated zones are cool turn off all gas supplies 6 Remove the two screws securing the left side panel along its bottom edge 7 Slide the left side panel towards the rear of the instrument and lift 8 Disconnectall plumbing from the block When removing the FID or FPD ignitor connectors pull on the plug not on its wires Pull
149. d detector weldment as sembly vertically onto the transfer tube weld ment being careful not to damage the fused Silica liner NSFER TUBE WELDMENT Install the heater and temperature sensor car tridges into the detector weldment Secure the weldment exit tube to the jet assem LOWER HEATER BLOCK bly with by holding the jet weldment with a 1 2 inch wrench and tightening the nut which secures the weldment with a 9 16 inch wrench SVC 6 35 20 21 22 23 24 25 26 27 28 29 30 31 Install the chimney assembly and secure using two screws Install the exhaust tube on the detector weld ment through the opening in the top of the chimney and tighten using a 9 16 inch wrench Install the drip tube on the exhaust tube Install the sulphur filter in the flange adapter Slide the PMT tube assembly onto the detector assembly Secure the PMT assembly to its support bracket using the extension spring Install the FPD cover on the instrument and secure using a thumbscrew Install the rear cover and secure using four screws Install the right side panel and secure using four screws Install the electronics carrier top cover Restore all gas supplies Restore power to the instrument SVC 6 36 Remove Replace Valve Box Heater and Sensor Cartridges 10 11 12 13 14 15 16 17 WARHIHG PERFORM THE PROCEDURE FOR DISCONNECTING CONNECTING HEATER AND TEMPERAT
150. d through the opening in the rear of the oven so that its ends terminate at the connection locations on the power supply PCB Connect the heater leads to the corresponding blade lugs on the power supply PCB Install the oven heater fan shroud in the instrument oven and secure using four screws Place a screwdriver through a hole in the shroud and gently spin the fan Listen to determine if the fan touches anything while turning If so open the shroud and make any necessary adjust ments Replace the panels removed at the beginning of this procedure Install any columns and associated hardware removed at the beginning of this procedure Connect any gas supplies disconnected in step 4 of this procedure CAUTION TURN OFF THE POWER TO THE INSTRUMENT IMME DIATELY IF THERE IS EVIDENCE OF THE FAN BLADES CONTACTING ANYTHING DURING OPERATION AND OR IF THERE IS UNDUE VIBRATION VIBRATION MAY INDICATE BENT FAN BLADES AND OR A BENT MOTOR SHAFT Restore power to the instrument Ensure that the oven operates properly atsome selected temperature e g 100 C SVC 5 6 Replace Oven Heater Element WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT Set the main power line switch to the off position RED O VISIBLE SAN Disconnect the power cable from its receptacle Allow time for the oven
151. ds at their connector block on the detector PCB Use a small flat blade screwdriver to press each wire lead release located adjacent to each connec tion Remove the preformed thermal insulation from around the detector to expose the two screws securing the detector to the instrument main frame On a series connected TCD disconnect the TCD to FID jumper tube from the TCD oven re turn exhaust vent port Remove the two screws securing the detector to the instrument and then lift the block up enough to expose the heater and sensor car tridge wires DELTA T SENSOR Carefully slide the three cartridges out of the block The two smaller cartridges are the sen sors and must be handled gently in order to TEMPERAVUR prevent breakage SENSOR Trace the reference gas inlet tubes attached to the base of the detector to the the TCD solenoid valve Observe the location on the solenoid valve where e lt nected SVC 4 5 17 18 19 20 21 22 7O07 T DOTT Installed N C fs lt amp _ FRONT OF INSTRUMENT Use caution when removing and installing the plastic M8 tubing nuts Excessive force can damage them Disconnect the tubes from the solenoid valve by loosening the plastic fittings securing them The fittings should only be finger tight If more force is required to loosen them use a small pair of pliers to free the fittings Note the solenoid valve fitting where
152. e f BA Detach and remove the insert assembly from the shell weldment using a inch wrench lt j 1 4 INCH SCREW AND Detach and remove the tubing nut from the fit WASHER ting on the shell weldment SHELL WELDMENT INSERT A ASSEMBLY SSS oe Ga CC RETA O NUT A Loosen the two screws securing the insulation FLA F cover inside the column oven WA amp REDUC 9 Rotate the cover freeing it from its securing NUT hardware and remove the cover and three pieces of lower insulation eb WER Remove the reducing nut flat washer and ISULATION anealed seal using a 1 2 inch wrench 10 Use a 3 4 inch wrench to loosen but not re TETE TE move the retaining nut below the heated block COVER SVC 6 13 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Use a Pozidriv screwdriver to remove the two screws securing the inlet to the instrument Gently pull the inlet up and out of its instrument cavity Remove the retaining nut loosened in step 10 Slide the heated block off of the shell weldment CAUTION Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile Carefully slide the heater and sensor cartridges HEATERISENEOR out of the heated block portion of the inlet CABLE ASSEMBLY Slide the heater and sensor cartridges into t
153. e To do this simply place the valve box top assembly on the two diago nally opposite rectangular standoffs in the lower valve box assembly and install the screws The quick release pin should be installed in the 90 degree position for the 6 port valves and in the 60 degree position for the 10 port valves Gently rotate and push the coupling shaft assembly with a blade type screwdriver until the slot on the coupling fully engages the valve rotor index pin Repeat this procedure for each valve installed Make sure that all solenoid valves are turned off by the appropriate valve controller Turn on the air supply to the solenoid valve s The piston rod of each actuator will move all the way out to the extended OFF position Very firmly tighten the link arm lock screw for each actuator CAUTION Use care in performing the above operation so as not to accidentally tum the valve rotor away from its preset step 2 position Install the hardware for any variable restrictors present SVC 7 16 Valve Actuation of GC Controlled Valves Operation of one or two 120 volt solenoid valves Activation of up to two valve solenoids designated as Purge A or Purge B may occur in either of two ways The operator may switch the valves manually whenever it is desirable via keyboard entry or more conveniently the valves can be switched ON once and OFF once during a run via the HP 5890 s timed events table NOTE If the valve is alread
154. e being careful not to damage the o ring The silica liner should extend above the top of the transfer tube approximately 6 7mm SVC 4 83 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 Carefully install the fused silica liner ferrule and transfer tube onto the detector base weldment ensuring that the exposed end of the fused silica liner remains 3 to 6 mm above the top of the transfer tube weldment Install the heated block onto the transfer tube weldment Install the brass nutand associated ferrule on the transfer tube weldment Inside the column oven connect the column to the detector base weldment Install the assembled detector weldment assembly vertically onto the transfer tube weldment being careful not to damage the fused silica liner Install the heater and sensor cartridges into the detector weldment Secure the weldment exit tube to the jet assembly with by holding the jet weldment with a 1 2 inch wrench and tightening the nut which secures the weldment with a 9 16 inch wrench Install the chimney assembly and secure using two screws Install the exhaust tube on the detector weldment through the opening in the top of the chim ney and tighten using a 9 16 inch wrench Install the drip tube on the exhaust tube Install the sulphur filter in the flange adapter Slide the PMT tube assembly onto the detector assembly Secure the PMT assembly to its support b
155. e valve Obviously other causes totally unrelated to the valve may exhibit similar symptoms Impure i e containing water carrier gas can cause extraneous peaks LOCATING LEAKS Leak checking the plumbing involved in a valve configured system must be done carefully and methodically Several methods may be used and the best choice will depend upon expediency accessibility and the magnitude of the leak Refer to Initial Supply Pressures and Leak Testing in Section 3 for details PRESSURE CHECK The pressure check method will indicate butsometimes notisolate a leak in the flow path Since this meth od does not necessarily isolate the leak one of the leak check methods may be needed to locate the leak specifically Note that each valve in a system has two flow paths ON and OFF A leak sometimes occurs in only one of these two positions Check both To do so perform the following 1 Disconnect the detector from the valve system 2 Cap the valve system atits outlet and pressurize to 689 kPa 100 psi Allow 2 to 5 minutes for pressure to equilibrate Ifa flow sensor exists it should read zero flow 3 Turn the knob on the regulator counterclockwise until it turns freely The regulator is now turned off and the gauge is indicating pressure within the valve system 4 Commonly the pressure will drop quickly for approximately 30 60 seconds then stabilize After this initial drop the gauge should not show more than a 6 89 to 13 78 k
156. e Replace Detector PCB HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME IONIZATION FID NITROGEN PHOSPHOROUS NPD AND FLAME PHOTOMETRIC FPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS 1 Setthe main power line switch to the off position RED O VISIBLE er TN 2 Disconnect the power cable from its receptacle L 3 Turn offall gas supplies 4 Liftthe hinged top cover at its front edge exposing the detector area 5 Remove the electronics carrier top cover 6 Remove the right side panel by removing four screws two each along its top and bottom edges 7 sa L SCREWS p x D SIS ES ELECTRONICS eo SRA yg CARRIER TOP SSI i COVER SCREWS RIGHT SIDE PANEL 7 Liftthe hinged top cover at its front edge exposing the detector area Ifan FPD detector is installed it will be necessary to remove the FPD cover by removing the thumbscrew securing it to the hinged top cover SVC 4 87 With the exception of the TCD and FPD detector PCBs all of the detector PCBs employed in the HP5890 Series II include an interconnect assembly which connects in one fashion or anoth er to a portion of the actual detector In order to remove the detect
157. e drip tube from the exhaust tube atthe top of the detector 14 Remove the exhaust tube from the detector using a 9 16 inch wrench 15 Remove the chimney assembly by removing the two screws securing itto the chimney back CHIMNEY 16 Loosen the three screws which secure the AA S screw clamp which secure the detector to the chim ney back CLAMP SECURING SCREWS SVC 4 71 x J ET WELDMENT 17 Use a 9 16 inch wrench to loosen the nut hold a O RING ing the weldment exit tube to the jet assembly It will be necessary to hold the jet assembly Oa VESPEL FERRULE with a 1 2 inch wrench to prevent rotation Ga BRASS NUT 18 Pull the heater and sensor from the detector weldment assembly 19 Carefully lift the detector vertically from the transfer tube so as not to damage the fused silica liner 20 Remove the o ring from the flange adapter on the detector weldment Lib lt WELDMENT 4 HEAT SHIELD GASKET 19256 80040 sQ Qo lt _ FIRST HEAT SHIELD WINDOW lt HEAT SHIELD DISK COUPLING O RING 0905 1104 Aa SECOND HEAT SHIELD WINDOW eo O RING 0905 0955 3 gt a FLANGE ADAPTOR a FLANGE RING SCREW K a RING 0905 1103 CLAMp LOCK WASHER VT SCREW 21 Remove the flange adapter and flange ring by removing the four screws securing them to the stainless steel coupling 22 Remove the second heat shield window and two associated o rings from the
158. e ee BUEN STATUS FINAL TIME run RAT INITIAL NOT TIME READY ACTUAL SETPOINT ITIEIS TII INIG IMEIMIOIR YI STATUS run RAT INITIAL NOT TIME READY OVEN ACTUAL SETPOINT TIEISITII INIG STTIGINJATE TPIA TIH OVEN STATUS El Run RAT NAL TIME NOT READY ACTUAL SETPOINT PPHAISISTE D IS EICIF TEISITI INITIAL TIME OVEN STATUS FINAL TIME O Run RAT NOT INITIAL TIME READY SVC 11 13 Test of display elements all alphanumeric and LED elements are lit 5890 Series II memory test in progress 5890A Self testing in progress LEDs off except possibly NOT READY Message indicating normal termination of diagnostic tests after power restoration User setpoints remain in force LEDs off except possibly NOT READY Appendix A PCB CONNECTOR INFORMATION This appendix contains all of the connector mnemonics used throughout the HP 5890 Series Il Itis intended to help the technician isolate problems to a specific component or components The HP 5890 Series Il may be found in many different configurations with varying component options This compli cates the process of providing detailed troubleshooting procedures for even general problems But by using the general troubleshooting techniques presented in Section 1 along with the pinouts given here successful results should be achieved TABLE OF CONTENTS AC POWER PCB
159. e lower heater block from the transfer tube by lifting it vertically O RING D ee JET WELDMENT q HEATER CARTRIDGE O RING 4 TRANSFER TUBE WELDMENT lt VESPEL FERRULE E gt P lt BRASS NUT a LOWER HEATER BLOCK GIGABORE LINER FERRULE Re BASE WELDMENT 21 22 23 24 25 26 Unscrew the transfer tube weldment from the detector base weldment Lift the transfer tube weldment containing the fused silica liner and ferrule vertically off of the base weldment Remove the fused silica liner and ferrule Vespel by pulling them out of the bottom ofthe trans fer tube weldment Install a new liner and ferrule by feeding the liner through the o ring at the top of the transfer tube being careful not to damage the o ring The silica liner should extend above the top of the transfer tube approximately 6 7mm NOTE The fused silica liner and ferrule Vespel are combined as Part No 19256 80690 Carefully install the fused silica liner ferrule and transfer tube onto the detector base weldment ensuring that the exposed end of the fused silica liner remains 3 to 6 mm above the top of the transfer tube weldment Install the heated block onto the transfer tube weldment SVC 4 78 28 29 30 31 32 33 34 35 36 37 38 39 Install the brass nut and associated ferrule on the transfer tube weldment Inside the column oven connectthe column
160. e protection against ESD Electro Static Discharge Use a grounded wriststrap part no 9300 0969 large or9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes or enclosures Install the NPD detector PCB by sliding it into CLAMPS its mounting location on the main PCB at the right side of the instrument Installation of the PCB will insert the interconnect into the thermal strap Use caution to avoid damaging the spring at the end of the interconnect Tighten the screws on the clamps which secure the interconnect to the thermal strap Remove the cap from the base of the detector weldment inside the column oven Install the column and any other associated hardware removed in step 5 of this procedure Install the detector top cover and all attached components on the thermal strap COVER tor cover to the thermal strap with three screws Restore all gas supplies to the instrument and Use a Pozidriv screwdriver to secure the detec l check for leaks at all installed fittings If the system is leak free install the left side panel and secure using two screws If it was necessary to remove the rear panel install it and secure using four screws Install the right side panel and secure using four screws Install the electronics
161. e rear cover to the instrument by installing and tightening four screws Restore gas supply pressure Restore power to the instrument SVC 6 19 Remove Replace FID Heater and Sensor Cartridges WARHIHG PERFORM THE PROCEDURE FOR DISCONNECTING CONNECTING HEATER AND TEMPERATURE SENSOR WIRING ON MAIN PCB BEFORE PERFORMING THIS PROCEDURE FLAME IONIZATION FID DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS Allow time for the oven and heated zones to cool Atthe bottom of the detector s to be removed inside the column oven remove the column and hardware associated with the detector s liner column liner nuts ferrules makeup gas 0 adapter etc g 6 8 2 NOTE g ee If an autosampler is installed the injection c port cover will not be present Remove the injection port cover by grasping its back edge and lifting it upward Lift the hinged top cover at its front edge exposing the detector area Remove the screw securing the ground strap to the hinged top cover INJ ECTION PORT COVER TOP COVER Remove the 1 4 inch screw and washer securing the cover at its right side hinge point At the lower right edge of the cover press from right to left until the right side hinge releases PRESS With the lower right side of the cover pushed FREE in lift the right side of the cover and slide it COVER to the right
162. e right side panel and sect screws SVC 6 37 18 Install the electronics carrier top cover 19 Restore all gas supplies 20 Restore power to the instrument SVC 6 38 Replacing TCD Delta T Temperature Sensor Cartridges WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT CAUTION THE TCD MUST BE TURNED OFF BEFORE REPLACING ITS DELTA T SENSOR CARTRIDGE 1 Setthe main power line switch to the off position RED O VISIBLE 2 Disconnect the power cable from its receptacle 3 Allow time for the oven and heated zones to cool Ses 4 When the heated zones are cool turn off all gas supplies 5 Atthe bottom of the detector s to be removed inside the column oven remove the column and hardware associated with the detector s liner column liner nuts ferrules makeup gas adax i n 6 Ifthe detector is not going to be replaced with a new detector cap the detector base 7 Liftthe hinged top cover at its front edge exposing the detector area 8 Remove the TCD detector cover by removing two screws one from each side of the detector cover 9 Ifthe detector is not going to be replaced with a new detector cap the TCD vent port on the top of the detector This will not be required ona series connected TCD SVC 6 39 10 11 12 13
163. e two screws securing the left side panel along its bottom edge 14 Slide the left side panel towards the rear of the instrument and lift 15 Remove the electronics carrier top cover above the signal cable plugs and receptacles to expose the top edge of the TCD detector PCB 16 Remove the right side panel by DERE removing four screws two each along its top and bottom edges 17 Use a Pozidriv screwdriver to ELECTRONICS remove the three screws CARRIER TOP securing the detector cover to COVER SCREWS the thermal strap 18 Remove the detector top cover RIGHT SIDE PANEL VER the thermal strap and set aside co 19 Use a 1 4 inch nut driver to remove the jet from the detectar weldment COLLECTOR DETECTOR mee COVER ERCONNECT J CLAMP SCREW SVC 4 42 and all attached components from l l 6 20 21 22 23 24 25 26 27 28 29 CAUTION The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes or enclosures Disconnect the NPD bead power cable from the detector PCB by pulling it straight off Remove the NPD detector PCB by sliding it out of the m
164. ected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes or enclosures NOTE In the next step avoid touching the lower end of the collector end nearest the jet Fingerprints and or other contamination may cause baseline drift and noise Install the base spanner nuton the detector weldment and tighten using a spanner wrench axa partno 19301 00150 JET BASE SPANNER NUT Remove the cap from the detector weldment THERMAL STRAP top opening Use an inert gas to blow out the detector weld INSULATION ment cleansing itof any debris Ensure that there is no debris in the detector weldment Install a new jetin the detector weldment Al though installation of a new jetis highly recom mended the old jet may be cleaned and in Stalled at the operator s discretion Use an approved solvent and a cleaning wire to clean jets Do not over tighten the jet Over tightening may permanently deform and damage the jet the detector base or both Install the replacement jet finger tight Use two fingers on the 1 4 inch nut driver to obtain this tightness Tighten the jet 1 8 turn past finger tight using the nut driver SVC 4 46 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 CAUTION The following steps requir
165. ection For all replacement part numbers refer to Section 6 of the IPB portion of this document Oven Assembly This document is not meant to provide instruction for first time installation of the options discussed Add on sheets exist for just this purpose and should be referenced when performing a first time instal lation TABLE OF CONTENTS REPLACING OVEN TEMPERATURE CONTROL SVC 5 hl COMPONENTS OVEN TEMPERATURE TROUBLESHOOTING Replace Oven Shroud Assembly 00000 cece eee eee Replace Oven Heater Element 0 000 c cece eee eee Replace Oven Temperature SENSOr cece cece teens Replace Oven Fan and or Oven Fan Motor c ccc e eee eeneeee Replace Oven Flap Motor 0 cece ccc tee Replace Cryogenic Valve and or NOZZl 0 cece ees Calibrate Oven Temperature 00 cee SVC 5 1 Oven Temperature Troubleshooting Problem 1 Oven does not heat WARN OVEN SHUTOFF message appears on dis play Using the same sample and conditions on this and other chromatographs the retention times of this GC differ Oven does not control Oven temperature runs away Probable Cause a Faulty fuse F4or F5 on main PCB Oven heater is open Faulty power supply PCB Faulty main PCB PCB Oven needs calibration Faulty main PCB Oven heater partially grounded Faulty main PCB SVC 5 2 Corrective Action Check both fuses If ei
166. ection 3 of this manual for information on removal and installation of the EPC MPC interface PCB a C3 C3 Mii ih 40 WET 4 PRESSURE CONTROL PCB TYPICAL DETECTOR PCB TYPICAL SVC 9 4 CAUTION WHEN DISCONNECTING A PLUG PULL ON THE PLUG NOTONITS WIRES PULLING ON THE WIRES MAY CAUSE BREAKAGE 9 Disconnect connectors if present from their respective receptacles J 1 J 7 38 J 10 and J 11 by carefully pulling them straight out For J 1 and 411 note the locking tab at each end of the plug these must be released to free the plug for removal Also note that J 10 plug is released by squeezing its ribbed sides while pulling v A uv ul i bmi N v P8 P7 P9 mail h ol l ig a T mee o pte A Al oe ie aapea Lon eye ees a PS Sette l se A A Heia lal ie 1 m So i jE e 2 p o 5 g mm E J14 P10 P11 HIGH VOLTAGE COVER 11 Disconnect connector from receptacle J 9 by squeezing its ribbed sides while pulling it straight out SVC 9 5 12 Verify all interconnecting plugs are now disconnected 13 14 15 16 17 18 19 20 21 MOUNTING HOLES
167. ee SG REGER a Re ee A a Oe SVC 7 5 LIQUID SAMPLE VALVES LSVS loc SVC 7 6 Troubleshooting and Maintenance cece eee SVC 7 7 ChromatographicSymptoms cece eee teens SVC 7 7 Loss of Sensitivity or Excessive Drift 2 cece eens SVC 7 7 Loss of Peaks in Specific A reas of the Chromatogram oo eee eee eee SVC 7 7 Baseline UPSETS suiii ia aano iana ane aac A A daca ale wa Rei aie daar ala Band SVC 7 7 EXtran OUS PEAKS iiare vee deg Renee eee oak Healer ke ebay SVC 7 8 Locating Leaks sud ics vata sense wine roid eee neha EA EE a eens ea age SVC 7 8 Press re CHECK ticity wee le Sais kay SEEMS Ook RE ee RWS ONE Ree uw Ee ee wee SVC 7 8 Valve Box A ssembly Removal ccc eect eet eens SVC 7 15 Vale A ctuator AliQnMent sss ces crakienea es G ee nanan eee nae eo oes KPa e ea ea as SVC 7 16 Valve Actuation of GC Controlled Valves cette SVC 7 17 Valve Configuration Diagrams asus SVC 7 18 SVC TOC 3 SECTION 8 KEYBOARD AND DISPLAY ccccseeeeeeeaeseeeeees SVE 8 T KEYBOARD AND DISPLAY REPLACEMENT cece cece eee eee eee SVC 8 1 KEYBOARD AND DISPLAY TROUBLESHOOTING cee eee cece eee SVC 8 2 Replace Display PCB Assembly cece eects SVC 8 3 SECTION 9 MAIN PCB isesivcisicrticsterseies we tieeese ieee PVE amp 1 MAIN PCB tesa feasts any dat i wanda an anid a A a duadndy shied Ea aai SVC 9 1 Replace Main PCB istek cise tapering aes dna congoes Adee Rion cis eae aa nee ation SVC 9 2 SECTION
168. eed attention Generally the instru ment remains fully operational except for the function indicated on the visual display Pressing any in strument function will erase the WARN message The following five WARN messages will only appear via the Selffest WARN MEMORY RESET indicates that the instrument memory has been reset to the default setpoints including flow and oven calibrations This could have been done by operator keyboard entry see Sec tion 13 of this manual by RAM replacement or by removing the battery WARN SIGNAL CHANGED indicates that a detector that was previously assigned to a particular signal is no longer recognized The instrument will reconfigure the signal This may occur as a result of detec tor boards having been removed during a repair If these boards have not been recently removed sus pecta failure and refer to Detector Problems later in this section WARN NO DETECTORS indicates that no detector boards are installed or that they are not recog nized as being installed by the processor If detector boards are physically installed and not recognized suspect the boards the I O section or the CPU section of the Main Board The WARN OVEN SHUT OFF message is somewhat of a hybrid between other WARN messages and a FAULT message Similar to other WARN messages the WARN OVEN SHUT OFF message occurs most often as a result of inoperative hardware rather than software This may be something as simple as the op
169. een installed at several locations within the instrument for the protection of major power circuits They are designed to open as quickly as possible to prevent damage to other components within the circuit Occasionally an opened fuse may have been caused by a short onetime surge how ever it is far more common that a component within the protected circuit has failed When an open fuse is noticed replace it once If the replacement blows suspect a component failure Fuses are located on the AC Power Board and on the Main Board The AC Power Board fuses protect the two high power circuits One fuse F1 or two in a split phase circuit F3 amp F4 protects the col umn oven heater and fan Another fuse F2 or two in a split phase circuit F1 amp F2 protects the main power transformer Refer to Section 8 of the IPB portion of this document for power supply PCB infor mation Refer to Section 9 of the IPB portion of this document for main PCB information The three secondary voltages of the main power transformer are protected with fuses located on the Main Board F3 protects the 120 VAC secondary which ultimately provides heater power for all of the zones F4 and F5 protect the 40 VAC secondary which ultimately provides all of the DC supply voltages 5 10 15 15 24 24 Fuses protect the 3 VAC secondary that is used for FID ignitor F1 and electronic flow sensor voltages F2 SVC 1 3 Power On Sequence As long as correct
170. eldment assembly Carefully lift the detector vertically from the transfer tube so as notto damage the fused Silica liner Inside the oven remove the column from the FPD detector base weldment SVC 4 81 PMT ASSEMBLY CLAMP SECURING SCREWS S CHIMNEY Da S screw 19 Remove the nut and ferrule Vespel from the transfer tube weldment 20 Remove the lower heater block from the transfer tube by lifting it vertically a O RING gt pe JET WELDMENT q EATER CARTRIDGE O RING 4 TRANSFER TUBE WELDMENT Oa VESPEL FERRULE E gt P lt BRASS NUT q LOWER HEATER BLOCK GIGABORE LINER FERRULE Xe BASE WELDMENT 21 Unscrew the transfer tube weldment from the detector base weldment 22 Lift the transfer tube weldment containing the fused silica liner and ferrule vertically off of the base weldment 23 Remove the fused silica liner and ferrule Vespel by pulling them out of the bottom of the trans fer tube weldment 24 Remove the two screws securing the detector base weldment to the instrument 25 Liftthe detector base weldment out of the instrument SVC 4 82 26 27 28 29 30 31 32 33 34 Ifa PCOC fan is installed remove the back cov er of the instrument by removing four screws and sliding the cover off of the rear of the in strument FAN SHROUD If installed remove the PCOC fan cover to allow COOLING removal of the
171. ence SVC 3 26 16 Restore the gases supplied to the system and leak check all installed fittings 17 If the system is leak free reinstall panels and covers and restore power SVC 3 27 Section 4 DETECTORS REPLACING DETECTOR COMPONENTS There are five detector options available for the HP 5890 Series Il Gas Chromatograph Thermal Conductivity TCD Flame lonization FID Nitrogen Phosphorus NPD Electron Capture ECD and Flame Photometric FPD Maintenance procedures for all the detectors are given in the following pages Procedures are supplied to remove replace and or clean various subassemblies based on the current maintenance philosophy i e to allow replacement of the lowest level components applicable for a particular detector Specific part numbers are not given in this section For all replacement part numbers refer to Section 2 of the IPB portion of this document Detector Options All of the detectors are heated using a heater sensor setup which consists of at least one heater car tridge and one sensor cartridge Heating of the detector zones is not covered in this section For infor mation on the zone heater sensor systems refer to Section 6 of the service portion of this document Zone Temperature This document is not meant to provide instruction for first time installation of the detector options dis cussed Add on sheets exist for just this purpose and should be referenced when performing a
172. er area along its outer edge and pulling it straight out This will draw the interconnect out of the detec tor clamps on the thermal strap Remove the five screws securing the thermal strap and gt Remove the shield from the thermal strap by carefully working it over the collector lead and Mae exhaust vent tube Depending on the detec A tor s location it may be necessary to bend the aa shield to remove and install it Avoid excessive bending as this will fatigue the metal shield shortening its life Remove the thermal strap working it carefully over the collector lead and exhaust vent tube If required remove the two Pozidriv screws se curing the heated block to the instrument Lift the heated block out of its mounting position ECD DETECTOR WELDMENT SVC 6 29 29 30 31 32 33 34 35 36 39 40 41 42 43 44 45 46 47 48 49 50 51 CAUTION Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile Carefully slide the heater and temperature sensor cartridges out of the block Slide the replacement heater and temperature sensor cartridges into the heated block Install the heated block in its mounting position Secure the heated block to the instrument using two screws Install the insulation around the detector base install the thermal strap working it carefully over the collector lea
173. er bracket by removing the 6 screws securing it to the instrument 5 Remove the two screws securing the left side panel along its bottom edge 6 Slide the left side panel towards the rear of the instrument and lift 7 Remove the four screws securing the rear cover to the instrument 8 Slide the rear cover towards the rear of the instrument x 3S Sx SVC 4 12 10 11 12 13 14 15 16 17 18 19 20 21 Disconnect the ignitor wire lead connector at MATINE CONNECTOR T the mating connection of the diode bridge as DIODE BRIDGE ASSEMBLY sembly lead adjacent to the ignitor Trace the lead freeing it along its path to the diode bridge assembly Disconnect the diode bridge assembly spade lug ground cable from the instrument by loos ening the screw that secures it Disconnect the diode bridge assembly from its connector at the FID flow manifold Remove the diode bridge assembly from the instrument GROUND IGNITOR LEAD BRIDGE ASSEMBLY Install the replacement diode bridge assembly into the instrument Connect the diode bridge assembly to its connector atthe FID flow manifold Connect the diode bridge assembly spade lug ground cable to the instrument by placing it be neath and tightening the screw that secures it Thread the ignitor wire lead along its path from the diode bridge assembly to the detector igni tor connector Con
174. er to the thermal strap Remove the detector top cover Disconnect any tubing attached to the detector purge and vent tubes Disconnect the cell anode lead from the PCB interconnect Loosen the locking screw on the ECD cover Slide the locking tab on the ECD cover back freeing the cover from the anode shaft of the cell weldment Carefully slide the ECD cover over the anode shaft and anode and remove it from the detec tor Cap the base of the detector inside the column oven to avoid damage or contamination of the detector Remove the two Pozidriv screws securing the detector weldment to the upper and lower heated blocks Remove the weldment and upper heated block from the lower heated block Remove any insulation from around the base of the weldment NOTE Perform steps 23 through 31 only if it is desired to remove the ECD heated block Otherwise proceed to step 32 If required remove the two Pozidriv screws se curing the heated block to the instrument Lift the heated block out of its mounting posi tion CAUTION Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile SVC 6 32 BOTTOM INSULATION A TOP COVER ECD COVER ANODE CELL WELDMENT ANODE WELDMENT lt scum UPPER CP gt lt _ HEATED Nii BLOCK a ANODE RETAINING NUT steer ce S mon FERRULE SC a U
175. erator leaving the oven door open However different from other WARN similar to FAULT messages the WARN OVEN SHUT OFF message may occur any time that conditions war rant The operator need notrun the Selffest for this message to be displayed WARN OVEN SHUT OFF indicates that the oven temperature has been shut off because it could not heat as quickly as it should or because it cooled more slowly than it should Suspect that the oven flap could be stuck or that a large thermal leak from the oven has occurred make sure that the oven door is shut Once the WARN OVEN SHUT OFF is displayed the oven temperature will remain off until the message is cleared The operator need only to press the SVC 1 7 PARTC OPERATOR INSTIGATED INDICATIONS This section discusses the visual information that the operator can instigate and use as part of the trou bleshooting process These visual indications are normally not available unless specifically requested by the operator There are several functions of the CALIB AND TEST Clear Dot modes that can be used as a diagnos tic tool Similarly the TEST CHROMATOGRAM can be extremely useful Each of these operator insti gated functions is specifically designed to aid the overall troubleshooting process and is activated from the keyboard Of the ten functions accessible through the CALIB AND TEST Clear Dot five may be thought of as servicing functions The other five functions are generally thought of as o
176. esponding to the mount ing slot at the left edge of the AC power supply PCB mounting bracket alongside the power transformer Use the nut driver to remove the two mounting nuts at the right edge of the AC power supply PCB mounting bracket NOTE The AC power supply PCB and its associated mounting bracket are removed and replaced as a unit Lift the PCB bracket at its right edge while sliding it to the right to remove it from the instrument MOUNTING SLOT MOUNTING HOLES Install the replacement AC power supply PCB in the reverse manner by sliding the mounting Slot on the left side of the PCB mounting bracket under the loosened mounting screw adjacent to the transformer Install the two mounting nuts at the right edge of the AC power supply PCB mounting bracket Tighten the two mounting nuts and the mounting screw firmly Install connectors J 26 J 27 and J 28 into their respective receptacles pushing each straight down until fully bottomed SVC 11 3 18 19 20 21 22 23 24 25 26 27 28 Install push on type connectors for oven heater leads J 3 and J 4 Either lead may be con nected to either terminal Connect power cord lead push on type connectors J 1 WHITE lead and J 2 BLACK lead Install the dual duct assembly on the installed mounting screw Install the upper mounting nutto secure the dual duct assembly to the outer oven shell Tighten the upper mounting n
177. etched length of the replacement heater element according to the line volt age of the instrument Stretch the wire EVENLY to the indicated length and allow it to contract back to an approximate 720 mm length Table 4 1 Preparing Replacement Oven Heater Element INSTRUMENT RESISTANCE UNSTRETCHED STRETCHED CONTRACTED VOLTAGE ohms LENGTH mm LENGTH mm LENGTH mm 120 1 9 05 0 05 136 975 720 220 2 30 42 0 17 180 1110 720 240 3 36 20 0 20 214 1185 720 17 Route the new heater through insulators so that its ends terminate at the connection locations on the power supply PCB CERAMIC OVEN HEATER STANDOFFS ARE FRAGILE OVER TIGHTENING OF SCREWS WILL CAUSE BREAKAGE 18 Secure the heater to its standoffs with two screws 19 Secure the two heater standoffs to the shroud with screws SVC 5 9 20 21 22 23 24 25 Install the oven temperature sensor and secure by tightening the retaining clamp Install the oven heater fan shroud in the instrument oven and secure using four screws Place a screwdriver through a hole in the shroud and gently spin the fan Listen to determine if the fan touches anything while turning If so open the shroud and make any necessary adjust ments Install any columns and associated hardware removed at the beginning of this procedure Connect any gas supplies disconnected in step 4 of this procedure Restore power to the instrument Ensure that the oven functions p
178. etector weld ic ment cleansing it of any debris i is j DETECTOR Ensure that there is no debris in the detector WELD MENT weldment Install a new jet in the detector weldment Al though installation of a new jet is highly recom mended the old jet may be cleaned and in Stalled at the operator s discretion Use an approved solvent and a cleaning wire to clean jets Do not over tighten the jet Over tightening may permanently deform and damage the jet the detector base or both Install the replacement jet finger tight Use two fingers on the 1 4 inch nut driver to obtain this tightness Tighten the jet 1 8 turn past finger tight using the nut driver CAUTION The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing orin between handling of PC Bs Printed Circuit Boards always place them in static control envelopes or enclosures Install the FID detector PCB by sliding it into its cramps mounting location on the main PCB at the right side of the instrument Installation of the PCB will insert the interconnect into the thermal strap Use caution to avoid damaging the spring at the end of the interconnect Tighten the screws on the clamps which secure the interconnect to the thermal strap
179. ews securing the clamps holding the detector PCB interconnect in place The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes or enclosures e Remove the FID detector PCB by sliding it out of the main PCB at the right side of the COLLECTOR instrument Removal of the PCB will with ASSEMBLY draw the interconnect from the thermal COLLECTOR strap Use caution to avoid damaging the spring at the end of the interconnect MOUNT f Remove the three screws securing the col lector mount to the thermal strap g Remove the collector mount and collector assembly as a unit THERMAL STRAP CAUTION The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes h Install the FID detector PCB by sliding it into its mounting location on the main PCB clamps at the right side of the instrument Instal
180. f the potentior assembly Remove the mounting nut securing the potentiometer assembly POTENTIOMETER A Remove the potentiometer assembly from the rear of the panel Remove the interlocking side covers TURNS DIAL from the plug using the side edge of he p gt an AMP pin extraction lance tool S Part No 8710 1542 g Orient the connector associated with DIAD INDICATOR the new potentiometer assembly in the w BRASS COLLAR same position as the one just removed CONTROL KNOB CAUTION NPD power control plugs installed in the wrong position will permanently damage the NPD detector PCB The following steps require protection against ESD Electro Static Discharge Use a grounded wriststrap part no 9300 0969 large or9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument Install the interlocking side covers on the two connectors which make up the connector to be installed in the NPD detector PCB TO NPD TRANSFORMER Insertthe plug into its connector on the NPD TOP PART OF CONNECTOR detector PCB 2 TO NPD BEAD POWER Remove the 1 2 inch nut from the new poten CONTROL tiometer assembly EOTIOM PART CONNECTOR Install the new potentiometer assembly on the panel from the rear LOCKING TAB Install the mounting nut and tighten it firmly Turn the potentiometer shaft fully counterclock wise LOCKING TAB 5 NOTE
181. fied temperature and pressure ranges 3 gases Scoring of valve surfaces with column packing or particulates in liquid or gas sample 2 Plugging a valve with column packing or sample precipitation 4 Contaminating the system with samples noneluting materials or poor quality support VALCO VALVES 18900F Basically valves are composed of four assemblies a driver valve body rotor and preload assembly The valve body is made of Nitronic 60 This is a high chromium high nickel content stainless steel thathas excellent chemical resistance anti galling characteristics and high tensile strength plumbing is connected to the valve body ports by the use of provided ferrules and fittings All general purpose valve bodies include mechanical stops in their index lips The stops are predetermined to limit rotor rotation i e 90 Degrees 60 Degrees and 36 Degrees so the correct flow path results when Rotor Type Ident Letter Mounting Hole Dart A B ay Ke Left Stop lt Right Boat D gt a E Mounting Hole roma the index pin is close to or against either stop of the index lip SVC 7 2 External tubing B B a X F RA amp amp TO oF Sa g Also note the rotor type stamped into the valve body The letter indicates the rotor installed in the particular body The rotors are interchangeable Polytetrafluorethylene Teflon rotors may be used from 0 to 175 degrees C This low tempera
182. first time installation TABLE OF CONTENTS REPLACING DETECTOR COMPONENTS 1 SVC 4 hl DETECTOR TROUBLESHOOTING aasssssssssssssanaaa SVC 4 f3 THERMAL CONDUCTIVITY DETECTOR TCD SVC 4 A Remove Replace TCD Detector Weldment 0 cece eee eee SVC 4 4 Remove Replace TCD Solenoid Switching Valve e 000 es SVC 4 3 FLAME IONIZATION DETECTOR FID 0cceuuaes Remove Replace FID Ignitor 0 0 eee Remove Replace FID Diode Bridge Assembly 02 005 Remove Replace FID Collector Body Collector Assembly Remove Replace FID J et auuu Remove Replace FID Detector Weldment 00 0 cece cece eee NITROGEN PHOSPHORUS DETECTOR NPD Remove Replace NPD Active Element Power Transformer Toroid Remove Replace NPD Collector cc cece eee tenes Remove Replace NPD J et cee cee SVC 4 1 Remove Replace NPD Active Element Power Control Remove Replace NPD Detector Weldment Wn lt O P slt lle B elb Wn lt O P ELECTRON CAPTURE DETECTOR ECD SVC 4 ELECTRON CAPTURE DETECTOR ECD 19233A 19235A VERSIONS SVC 4 Remove Replace ECD Cells Weldment and or Heated Block 19233A 19235A Versions ccc cece eee eee eens SVC 4 ELECTRON CAPTURE DETECTOR G1223A G1224A VERSIONS SVC 4 Remove Replace ECD Cells Weldment and or Heated Block G1223A G1224A Versions 0 ccc eee eee eens SVC
183. g holes with those of the detector weldment Secure the detector weldment and insulation plate to the instrument with two screws Locate the U shaped slots on the instrument to the left of the inlet Bend the tubes from the new detector weldment to lay within these slots and any installed clips and route them to the flow manifold block on the left side of the instru ment WARKING CONNECTING THE HYDROGEN INLET TUBE AT THE WRONG LOCATION ON THE FLOW MANIFOLD BLOCK WILL RESULT IN LEAKAGE CREATING A FIRE AND EXPLOSION HAZARD CAUTION When installing tubing in the flow manifold block ensure that all o rings are positioned properly Connect the tubes from the new detector weld ment to the flow manifold block The hydrogen tube is painted RED Make sure each tube is installed at the correct location on the flow manifold block If the PCOC fan and cover were removed in stall them and secure using two screws Install the thermal strap and secure it to the in strument using five screws Install the base spanner nut on the detector weldment and tighten using an open end wrench SVC 4 25 FLOW MANIFOLD TUBE OUTLET j FITTING PLATE adi we D SCREW 3 gt FAN f SHROUD P LD an e A FLOW FAN ARROW 47 48 49 50 51 52 53 54 55 56 57 58 Remove the cap from the detector weldment top opening JET Use an inert gas to blow out the d
184. g not on its wires Pulling on the wires may cause breakage Disconnect connector P7 from its receptacle by pulling it straight off Heated zones corre sponding to sensor lead locations are labeled to the right of the P7 connector receptacle on the main PCB 7j OO0OO0O000 OO00000 FPrPEFOOAN SVC 6 7 22 23 24 25 26 Use the lance release tip of an AMP pin extrac tion lance reset tool 8710 1542 to remove the appropriate pins from connector P7 The tool features a lance release tip and a lance reset tip The lance release tip is used to depress the pin locking lance to extract the pin from a connector The lance reset tip positions a lock ing lance to its proper height to ensure reten tion of the pin in the connector TOOL STOP LANCE RELEASE i TIP INSERT TIP ane HERE LANCE BACK OF CAVITY BACK OF CONTACT HOUSING TYPICAL Prepare the pins corresponding to the replace ment sensor cartridges by adjusting their lock ing lances using the lance reset portion of the tool Insert the pins for the replacement sensor into their appropriate locations in the plug making sure the locking lance on each pin seats into its hole through the side of the plug LOCKING LANCE CAVITY TYPICAL BACK OF HOUSING EXTRACTION LANCE RESET tT LANCE RELEASE TIP LANCE DASH NUMBER RESET TIP MARKED HERE LANCE TAPER LOCKING RESET LANCE RECEPTACLE BOX TYPICAL Gently pull on t
185. g the two screws securing itto the in strument Removal of the fan cover frees the FAN fen SHROUD i Trace the fan power wires to there destination otin at connector P7 on the main PCB exposed FAN ge RETON right side of instrument m O ARROW WHEN DISCONNECTING A PLUG PULL ON THE PLUG NOT ON ITS WIRES PULLING ON THE WIRES MAY CAUSE BREAKAGE Disconnectconnector P7 from its receptacle by pulling it straight off Heated zones corre sponding to sensor lead locations are labeled to the right of the P7 connector receptacle on the main PCB SVC 2 21 11 12 13 14 15 16 17 18 19 20 21 22 Use the lance release tip of an AMP pin extrac tion lance reset tool 8710 1542 to remove the EXTRACTION T00L LANCE RESET appropriate pins from connector P7 The tool To features a lance release tip and a lance reset tip The lance release tip is used to depress the pin locking lance to extract the pin from a connector The lance reset tip positions a lock ing lance to its proper height to ensure reten p tion ofthe pin in the connector LANCE TOOL STOP LANCE RELEASE TIP DASH NUMBER RESET TIP MARKED HERE LANCE RELEASE wi TIP INSERT TIP eee S HERE LANCE BACK OF CAVITY CAVITY BACK OF CONTACT HOUSING TYPICAL Prepare the pins corresponding to the replace aice TAPER LOCKING ment fan by adjusting their locking lances using RESET LANCE the lan
186. h hold itin position then sliding the tray away from the instrument b Liftthe autosampler tray from its mount ing bracket and set it aside c Remove the autosampler bracket by removing the 6 screws securing itto the instrument Remove the two screws securing the left side panel along its bottom edge Slide the left side panel towards the rear of the instrument and lift Remove the electronics carrier top cover Remove the right side panel by ELECTRONICS CARRIER TOP COVER removing four screws two each SCREWS along its top and bottom edges Disconnect the ignitor wire j lead connector z g TR connection adjac f 5 IGNITOR ignitor e T oe SCREWS 4 RIGHT SIDE PANEL SVC 4 22 18 Loosen the screws securing the clamps holding DRERCOMHECE the interconnect in place COLLECTOR NUT COLLECTOR SPANNER COLLECTOR MOUNT THERMAL CLAMPS STRAP CAUTION The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes or enclosures 19 Remove the FID detector PCB by sliding it out of the main PCB atthe right side of the instru ment Remo
187. he heated block of the inlet being installed Install the heated block onto the stem of the Shell weldment Install the retaining nut on the base of the shell weldment securing the heated block to the shell weldment Install any removed insulation around the heated block within the cavity provided in the HEATED shell weldment BLOCK Carefully install the inlet securing it to the in RETA strument with two Pozidriv screws NUT aA NOTE To lessen the possibility of pressure leaks always install a new anealed seal when the old seal has been removed Tighten the retaining nutat the base ofthe shell weldment Install the reducing nut flatwasher and anealed seal onto the base of the retaining nut Install the lower insulation cover and three pieces of lower insulation inside the column oven Tighten the two screws which secure the lower insulation cover inside the column oven Replace any insulation that was removed from around the inlet Install the insert assembly on the shell weldment and secure using a inch wrench Install the tubing nut and associated split vent tube on the shell weldment and secure using a 1 2 inch wrench SVC 6 14 28 29 30 31 32 33 34 35 36 37 38 39 40 Install the liner in the shell weldment Install a cap or plug on the end ofthe inlet inside the column oven Restore the supply gas pressure Check for leaks at all of the newly ma
188. he CPU Section could also cause this indication Replace Main Board FATAL ERR STACK ERR indicates that stack is beyond legal limits Suspect a problem in the CPU Sec tion of the Main Board Replace Main Board FATAL ERR RUN CNTL indicates that the Run Control task couldn t complete within 25 milliseconds Suspecta problem with the Clock Section of the Main Board however the CPU Section could also cause this indication Replace Main Board As can be seen from the FATAL ERR message listing above they are generally an indication that a fail ure exists either in the Clock or CPU Sections of the Main Board The Clock Section operation can be easily checked by measuring the frequencies on its outputs Once the clocks are verified to be good the CPU Z80 could be checked by substitution The H2 ALARM message indicates a failure of the system to hold or reach the electronic pressure set point All electronic pressures and heated zones will be shutoff To recover the problem must be cor rected and the GC power cycled H2 ALARM EPPA indicates electronic pressure problem with the A systems ability to hold pressure Possibly a leak trouble shoot the proportional control valve pressure transducer and the inlet in the case of the EPC Trouble shoot the forward pressure regulator and gage in the case of the MPC SVC 1 5 H2 ALARM EPP B indicates electronic pressure problem with the B systems ability to hold pressure Possibly a leak
189. he PCOC inlet While the cryogen ic valve is discussed with oven components in Section 5 of the service portion of this document remov al of the PCOC nozzle which carries the cooling gas from the valve to the inlet is discussed in this sec tion Specific part numbers are not given in this section For replacement part numbers refer to the section of the IPB applicable to the heated zone component being addressed i e inlets Section 5 detec tors Section 2 valve box Section 7 cryogenic valve Section 6 TABLE OF CONTENTS REPLACING TEMPERATURE CONTROL SVC 6 hl COMPONENTS ZONE TEMPERATURE TROUBLESHOOTING SVC 6 p Remove Replace Inlet Detector and Valve Box SVC 6 Heater Sensor Cable Assemblies Disconnect Connect Heater and Temperature Sensor SVC 6 A Wiring on Main PCB Remove Replace Inlet Zone Heater and Sensor Cartridges SVC 6 J Remove Replace Packed Column Inlet Heater and Sensor CartridgesSVC 6 d Remove Replace Septum Purged Packed Column Inlet SVC 6 Heater and Sensor Cartridges Remove Replace Split Splitless Split Only Capillary Inlet SVC 6 Heater and Sensor Cartridges SVC 6 1 Remove Replace PCOC Inlet Heater and Sensor Cartridges Remove Replace Detector Zone Heater and Sensor Cartridges Remove Replace TCD Heater and Sensor Cartridges TABLE OF CONTENTS continued Remove Replace FID Heater and Sensor Cartridges
190. he rear and lifting upwards until its catch releases then pulling it towards the rear of the instrument 6 Ifthe rear panel connector PCB ribbon cable is to be replaced remove the right side panel by removing four screws two each along its upper and lower edges E SCREWS wr wel RIGHT SIDE ELECTRONICS PANEL CARRIER TOP gh COVER f SCREWS 7 Remove the four screws securing the rear pan el to the instrument SS 8 Ifthe rear panel connector PCB is to be re placed remove the three screws securing the rear panel connector PCB to the rear panel This procedure requires precautions against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a REAR PANEL CONNECTOR PCB MUN MU SME MULT CLL amp Nl TUNIC PONIAN LLL SVC 10 5 10 11 12 13 14 15 16 17 suitable ground Failure to heed this caution may result in damage to the instrument Slide the rear panel away from the back of the instrument taking care not to damage the rear panel connector PCB ribbon cable If the rear panel connector PCB is to be replaced remove it from the rear panel Free and remove the ribbon cable from the rear panel connector PCB by releasing the locking tabs one on either side of the connector receptacle and pulling the cable straight out If the rear panel con
191. he wire to ensure thatthe pin is locked in the connector Insert connector P7 into its corresponding receptacle on the main PCB 27 After the leads have been exchanged in the appropriate connectors proceed to the heater sen sor cable assembly removal replacement procedure applicable to the desired heated zone SVC 6 8 Remove Replace Inlet Zone Heater and Sensor Cartridges Remove Replace Packed Column Inlet Heater and Sensor Cartridges WARHIHG PERFORM THE PROCEDURE FOR DISCONNECTING CONNECTING HEATER AND TEMPERATURE SENSOR WIRING ON MAIN PCB BEFORE PERFORMING THIS PROCEDURE INJ ECTION PORT COVER 1 Allow time for the heated zones to cool l 2 Atthe bottom ofthe inlet inside the column oven remove the column and hardware asso ciated with the inlet liner column liner nuts ferrules makeup gas adapter etc 3 Inside the column oven cap the base of the inlet a LID SHAFT 4 Remove the injection port cover by grasping its 7 back edge and lifting it upward KS L R 5 Remove any insulation from around the top of the inlet 1 4 INCH SCREW m AND 6 Usea Pozidriv screwdriver to remove the two WASHER screws securing the inlet and insulation plate to the instrument Depending on the age of the instrument the insulation plate may be flat as shown atthe left or may be a box as shown below INSULATION PLATE lt 7 Liftthe inletenough to expose the heated block and heater
192. i_ SENSOR 9 i SCREWS HEATER STANDOFF an Shroud FAN SHROUD AS VIEWED FROM INSIDE OVEN 14 Note the position of the sensor so that the replacement may be installed at the same location 15 Loosen the retainer clamp sufficiently to free the sensor HEATER SENSOR AS VIEWED FROM REAR OF SHROUD 16 Withdraw the faulty sensor from the retainer 17 Remove the sensor through the opening in the rear of the oven Some insulation will come out with the sensor 18 Remove any insulation remaining in the sensor guide and save it for later use 19 20 21 22 CAUTION THE TEMPERATURE SENSOR SMALL CERAMIC BEAD IS VERY FRAGILE AND MUST BE HANDLED CAREFULLY Insert the new sensor through the opening in the rear of the oven Position the new sensor cartridge at the same location as the original and secure it by tighten ing the retainer clamp WHEN DISCONNECTING A PLUG PULL ON THE PLUG NOT ON ITS WIRES PULLING ON THE WIRES MAY CAUSE BREAKAGE Disconnect connector P7 from its receptacle on the main PCB by pulling it straight off Heated zones corresponding to sensor lead locations are labeled to the right of the P7 connector re ceptacle on the main PCB Use the lance release tip of an AMP pin extrac tion lance reset tool 8710 1542 to remove the appropriate pins from connector P7 The tool EXTRACTION TOOL features a lance release tip and a lance reset LANCE RESET D tip The lance
193. ide panel along its bottom edge 8 Slide the left side panel towards the rear of the instrument and lift SCREWS per x RIGHT SIDE ELECTRONICS PANEL CARRIER TOP COVER SCREWS SCREWS 10 Slide the rear cover towards the rear of the instrumen 11 Remove columns and other hardware from any installed inlets and detectors which pre vents free access to the heater shroud 12 Remove the four screws securing the oven heater fan shroud 13 Carefully swing the left edge of the shroud towards the front of the instrument SVC 5 3 FAN SHROUD S ______ SENSOR HEATER STANDOFF Flee cael ea SCREWS Qo ar amp 1 an Shroud FAN SHROUD AS VIEWED FROM INSIDE OVEN WHEN DISCONNECTING A PLUG PULL ON THE PLUG NOTONITS WIRES PULLING ON THE WIRES MAY CAUSE BREAKAGE 14 At the rear of the instrument disconnect the two heater element leads at the AC power supply PCB HEATER ELEMENT CONNECTION TERMINALS 15 From inside the oven draw the heater leads through the opening in the rear of the oven SVC 5 4 16 Disconnect connector P7 from its receptacle on the main PCB by pulling it straight off Heated zones corresponding to sensor lead locations are labeled to the right of the P7 connector re ceptacle on the main PCB 17 Use the lance release tip of an AMP pin extrac tion lance reset tool 8710 1542 to remove the appropriate pins from connector P7
194. ide the ECD cover over the anode ANODE shaftand anode and remove it from the detec CELL WELDMEN tor SVC 4 56 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Loosen the anode retaining nut on the cell weldment Remove the anode from the cell weldment Clean the anode using methanol acetone or methalyne chloride and or a light sandpaper Rinse the anode with methanol Remove the anode retaining nutand asso ciated ferrule from the cell weldment Inspectthe nutand ferrule to determine if they should be replaced Install either the old nutand ferrule or their re placementon the cell weldment Insertthe anode into the nut and ferrule until it bottoms Tighten the nut and ferrule to secure the anode in place ANODE WELDMENT E a BLOCK Carefully slide the ECD cover over the anode shaftand anode and install it on the detector Slide the locking tab on the ECD cover forward capturing the cover over the anode shaft of the cell weldment Tighten the locking screw on the ECD cover Connectthe cell collector lead from the cell anode to the PCB interconnect Position the detector cover over the detector Secure the detector cover to the instrument with a screw Restore power to the instrument SVC 4 57 FLAME PHOTOMETRIC DETECTOR FPD Clean Replace Photomultiplier Tube PMT WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT
195. il The same plugging or leak considerations as the MPC apply with the addition of the possiblity of electronic failures to either the proportional valve pressure transducer or electronic control board These will be verified by substitution Symptoms and possible causes Not enough pressure 1 Septum leaks or is missing 2 Column is broken 3 Column ferrule seal leaks 4 Gas supply is off 5 Supply pressure may not be achieveable with the column is use Pressure goes to 0 or max 1 Configuration is wrong Not Ready light flickers oscillating pressure 1 Septum and or column connection leaks 2 Pressure set higher than the operating limit SVC 3 3 Not Ready light flickers oscillating temperature 1 Configuration is wrong 2 Inlet temperature equilibration time too short Pressure and Temperature are not controllable Configuration is wrong No flow and high zero 1 Pressure transducer probably defective Background Zero lt 6psi 1 Possible problem with either EPC pressure transducer or EPC control bd SVC 3 4 Remove Replace Inlet Flow Control Components WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN Donee THE INSTRUMENT WHEN THE POWER CORD Iu ol IS CONNECTED AVOID A POTENTIALLY eL DANGEROUS SHOCK HAZARD BY StS j DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME IONIZATION FID AND NITROGEN PHOSPHOROUS NPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNE
196. ing an inert gas Ifa PCOC fan is installed remove the back cov er of the instrument by removing four screws and sliding the cover off of the rear of the in strument FAN SHROUD If installed remove the PCOC fan cover to allow removal of the tubing attached to the detector coors BInCETION weldment ARROW Trace the tubing from the FPD jet to the con nection points at the left side of the instrument Disconnect the M8 fittings securing the tubing at their connection sites The tubing should only be finger tight If more force is required to free them use a small pair of pliers while holding the applicable connector sites with an appropriate tool SVC 4 73 i FAN LZP eee SSH 33 34 35 36 37 38 39 40 41 42 43 Locate the U shaped slots on the instrument to the left of the inlet Bend the tubes from the new jet to lay within these slots and any in stalled clips and route them to their associated attachment points on the leftside ofthe instru ment CAUTION When installing tubing in the applicable flow control component ensure that all o rings are positioned properly Connect the tubes from the new jet weldment to the flow manifold block The hydrogen tube fitting is painted RED Make sure each tube is installed at the correct location on the flow manifold block If the PCOC fan and cover were removed in stall them and secure using two s
197. ing on the wires may cause damage 9 Onan FID or FPD block disconnect the ignitor electr connections AIR 10 Remove the outlet fitting plate from the side of ae IGNITOR the flow block by removing the screw securing it CONNECTORS to the block P l q OUTLET 11 Disconnect the detector supply gas tubes pe FITTING AUX AiR PLATE H2 SVC 3 25 12 With a Pozidriv screwdriver remove the mounting screw from the rear of the block The block must be removed from the rear of the instrument FRONT CLAMPING PLATE FID FPD IGNITION a VALVE PLUG S COMPRESSION Q SPRING e NEEDLE VALVE ASSEMBLY ON OFF VALVE AUXILIARY INLET FITTING FID FPD IGNITION MICRO SWITCH AF WELDMENT FLOW MANIFOLD BLOCK TYPICAL RESTRICTOR INLET FITTING OUTLET FITTING PLATE REAR CLAMPING PLATE 13 Install the new block on the flow panel from the rear of the instrument The block fits on the panel over two standoffs in only one direction 14 Replace the mounting screw on the block and tighten it firmly 15 Connect the plumbing on the rear of the block The fittings are labelled on the block In addi tion D Onan FID NPD replace the hydrogen and air tubes The hydrogen tube painted red con nects to the lower fitting The gas tube retainer fits properly only when the hydrogen and air tubes are installed correctly D Onan FID or FPD block connect the ignitor leads The leads may be reversed without consequ
198. ions are made before applying power to the instrument If flow is interrupted while the TCD is on damage to the detector will occur Restore power to the HP 5890 Series Il Verify operation of the TCD solenoid switching valve by turning on the detector via the keyboard and listening for the solenoid valve to cycle from one state to the other ata steady rate Run a TCD Test Sample Chromatogram refer to HP 5890 Series Il Reference Manual to ensure that the system is operating properly If reversed peaks are experienced the most likely cause is reversed gas tubes connected to the TCD solenoid valve SVC 4 10 FLAME IONIZATION DETECTOR FID Remove Replace FID Ignitor WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME IONIZATION FID AND NITROGEN PHOSPHOROUS NPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS 1 Setthe main power line switch to the off position RED O VISIBLE Inne 2 Disconnect the power cable from its receptacle lt z Ha 3 Turn off all gas supplies 4 Liftthe hinged top cover at its front edge exposing the detector area 5 Disconnect the ignitor wire lead connector at the mating connection adjacent to the ignitor DETECTOR PCB INTERCONNECT COLLECTOR iy NUT a
199. it to the instrument INSULATION PLATE Remove the two screws securing the detec weldment to the instrument Slide the insulation plate out from over the detector weldment La R Cap the detector weldment at its upper op ing using a detector cap and at its lower ing inside the column oven Remove the insulation around the detector weldment to expose the heated block Lift the base up enough to expose the heated block heater and temperature sensor cartridge wires SVC 6 21 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 CAUTION Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile Carefully slide the two cartridges out of the block Slide the replacement heater and sensor cartridges into the heated block portion of the detec tor weldment Position the detector weldment in the detector opening Install the insulation around the detector weldment Position the insulation plate over the installed insulation and align its mounting holes with those of the detector weldment Secure the detector weldment and insulation plate to the instrument with two screws Install the thermal strap and secure itto the instrument using five screws Install the base spanner nut on the detector weldment and tighten using an open end wrench Remove the cap from the detector weldment top opening
200. ition of the fan on the motor shaft Replace the panels removed at the beginning of this procedure Install any columns and associated hardware removed at the beginning of this procedure Connect any gas supplies disconnected in step 4 of this procedure SVC 5 17 CAUTION TURN OFF THE POWER TO THE INSTRUMENT IMME DIATELY IF THERE IS EVIDENCE OF THE FAN BLADES CONTACTING ANYTHING DURING OPERATION AND OR IF THERE IS UNDUE VIBRATION VIBRATION MAY INDICATE BENT FAN BLADES AND OR A BENT MOTOR SHAFT 31 Restore power to the instrument 32 Check that the oven controls properly atsome selected temperature e g 100_C SVC 5 18 Replace Oven Flap Motor WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT Set the main power line switch to the off position RED O VISIBLE SAN Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool BAGR D E When the heated zones are cool turn off all gas supplies 5 Remove the four screws securing the rear cover to the instrument 6 Slide the rear cover towards the rear of the in strument 7 Remove the electronics carrier top cover by grasping it at the rear and lifting upwards until its catch releases then pulling it towards the rear of the instrument o9 Remove the right side
201. l and verifying INET signal definitions Each feature is discussed separately INET Configuration ACTUAL SETPOINT CLOINIFIT GLURIE INJELT WiOR K AL Figure 13 4 CONFI GURE NETWORK Displays Figure 13 4 shows displays resulting from the key sequence EDM Gp Switching Between Global and Local With regard to the INET function at the HP 5890A there are two operating modes global or local In global mode default mode HP 5890A and stor_ keys when pressed affect other devices on the INET loop In local mode however pressing or G at the HP 5890A affects only the HP 5890A A run may be started or stopped at the HP 5890A without affecting other devices on the INET loop In local mode note that the H P 5890A remains part of the INET system it reports its readiness to the system and pressing START and SVC 10 8 STOP keys on other devices on the INET loop e g the controller will affect HP 5890A operation Once in CONFI GURE NETWORK pressing oN_ or FF switches respectively between global or local mode shows resulting displays as in Figure 13 5 INET Global Local ACTUAL SETPOINT Figure 13 5 INET GLOBAL LOCAL Displays An example of where having the HP 5890A in local mode might be useful is in the case of conditioning a column the HP 5890A may be started or stopped as desi
202. l for effective troubleshooting The following symptom cause list gives the most commonly encountered problems found with valves and their solution Loss of Sensitivity or Excessive Drift Several possible causes exist for overall deterioration of the chromatogram D Contamination in the valve requires a thorough cleaning D Internal leakage necessitates a complete disassembly and inspection of the mating surfaces D Poor temperature control may require a full check of electronic and thermal components D Lack of proper conditioning techniques columns etc D Failure or deterioration of other components i e columns detectors etc Loss of Peaks in Specific Areas of the Chromatogram Entire sections of chromatographic data can be lost due to a valve that does not rotate or one that ro tates improperly Other than obvious component failures i e solenoid actuator etc generally im proper adjustments and misalignments cause most problems D Check that adequate air about 482 kPa or 70 psi is supplied D Check the valve Is it rotating D If the valve rotates check for proper alignment of the actuator mechanical binding or slippage of connecting parts D Check for blocked flow paths with valve in both positions Baseline Upsets Frequently baseline upsets may be seen on chromatograms when valves are switched These upsets are normally caused by pressure changes within the system injections of large volume samples or
203. lat washer and anealed seal onto the base of the retaining nut Install the lower insulation cover and three pieces of lower insulation inside the column oven Tighten the two screws which secure the lower insulation cover inside the column oven SVC 2 14 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 Replace any insulation that was removed from around the inlet Bend the tubes running from the new insert assembly and split vent tube to the inlet flow control components so that they lay within the U shaped channels to the left of the inlets Install the tubes removed in steps 9 through 11 Install the insert assembly on the shell weld ment and secure using a inch wrench Install the tubing nut and associated split vent tube on the shell weldment and secure using a 1 2 inch wrench Install the liner in the shell weldment Install a cap or plug on the end ofthe inlet in side the column oven Restore the supply gas pressure Check for leaks at all of the newly mated fittings Turn off the supply gas Remove the cap plug from the end ofthe inlet Install the column and associated hardware removed in step 5 Install the left side panel and secure using two screws Install the injection port cover Restore power to the HP 5890 Series Il SVC 2 15 PROGRAMMABLE COOL ON COLUMN INLET PCOC Remove Replace PCOC Inlet WARNING HAZARDOUS VOLTA
204. ling on the wires TO NBD TRANSFORMER may cause breakage TOP PART OF CONNECTOR The following steps require protection r4 TO NPD BEAD against ESD Electro Static Discharge ae POWER Use a grounded wrist strap part no See ane 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument Disconnect the NPD bead power cable from the LOCKING TAB detector PCB by pulling it straight off F CONNECTOR 0 Use the side edge ofan AMP pin extraction LOCKING TAB lance tool 8710 1542 to remove the interlock NOTE ASSEMBLED ing side covers from the plug The plug is CONNECTORS made up of two connectors one is for the to roid bead power the other is for the active con trol element EXTRACTION Lhe LANCE RESET TOOL LANCE DASH NUMBER RESET TIP MARKED HERE Loosen the screws securing the detector PCB interconnect clamps to the thermal strap DETECTOR COVER COLLECTOR ae ane INTERCONNECT CLAMP SCREW SVC 4 29 CAUTION The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes or
205. lopes or enclosures Install the FID detector PCB by sliding it into its claMPS mounting location on the main PCB at the right side of the instrument Installation of the PCB will insert the interconnect into the thermal strap Use caution to avoid damaging the spring at the end of the interconnect Tighten the screws on the clamps which secure the interconnect to the thermal strap Install the collector mount and collector assembly as a unit NECT Secure the collector mount to the thermal strap using three screws Connect the ignitor wire lead connector at the mating connection adjacent to the ignitor Restore all gas supplies to the instrument and check for leaks at all installed fittings If the system is leak free install the right side panel and secure using four screws Install the electronics carrier top cover Restore power to the HP 5890 Series Il SVC 4 20 Remove Replace FID Detector Weldment Peo Nr WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME IONIZATION FID DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS Set the main power line switch to the off position RED O VISIBLE Disconnect the power cable from its receptacle Allow time for the oven and heated zones to co
206. low manifold Faulty ignitor SVC 4 3 Corrective Action Refer to operation and ref erence manuals as well as the manuals for the exter nal device Replace detector PCB If problem persists install original detector PCB and refer to probable cause b Replace main PCB Disconnect signal cable and run the instrument self test If FAULT DAC 1 TEST is indicated suspect faulty main PCB Otherwise sus pecta faulty cable or exter nal device Swap detector PCBs If problem persists swap back original detector PCBs to starting configura tion and refer to probable cause b If problem follows the swapped PCB replace the suspect PCB with a known Repme amp iain PCB Refer to operation and ref erence manuals to ensure that proper type quality and flow of gases are be ing used Replace ignitor switch on flow manifold refer to Sec tion 3 of this document Replace ignitor refer to Section 4 of this docu ment THERMAL CONDUCTIVITY DETECTOR TCD The main portion of the TCD detector is a heated block into which a heater cartridge and two sensor cartridges are installed In addition to the standard heater and sensor cartridges a second sensor car tridge referred to as the delta t cartridge is employed which is connected to the TCD detector PCB If the detector requires replacement the entire assembly is replaced as a unit Remove Replace TCD Detector Weldment WARNING HAZAR
207. m in static control envelopes or enclosures Install the NPD detector PCB by sliding it into its mounting location on the main PCB at the right side of the instrument Installation of the PCB will insert the interconnect into the thermal strap Use caution to avoid damaging the spring at the end of the interconnect Tighten the screws on the clamps which secure the interconnect to the thermal strap Install the detector top cover and all attached components on the thermal strap Use a Pozidriv screwdriver to secure the detec tor cover to the thermal strap with three screws Restore all gas supplies to the instrument and check for leaks at all installed fittings If the system is leak free install the right side panel and secure using four screws Install the electronics carrier top cover Restore power to the HP 5890 Series Il SVC 4 37 COVER Remove Replace NPD Active Element Power Control WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT Set the main power line switch to the off position RED O VISIBLE Disconnect the power cable from its receptacle Remove the electronics carrier top cover by grasping it at the rear and lifting upwards until its catch releases then pulling it towards the rear of the instrument Remove the right side p
208. maged tube must be replaced before continuing to operate the instrument If the PMT is to be replaced carefully remove the PMT from the socket associated with the re sistor network cable assembly in the end cap Dispose of the old tube in a safe manner Carefully remove the new PMT from its packing case and insert the base of the tube into the socket of the resistor network cable assembly Be very careful when inserting the tube in order to prevent damage to its contacts observe keying SVC 4 59 14 15 16 17 18 19 20 CAUTION Ensure that no fingerprints dust grease etc are present on the PMT window facing the detector module Remove the plastic light seal cap covering the window of the PMT Carefully insert the PMT into the tube body and engage the threads of the end cap Seat the end cap hand tight Slide the PMT tube assembly onto the detector assembly Secure the resistor network cable assembly to the PMT assembly using a cable tie Secure the PMT assembly to its support bracket using the extension spring Install the FPD cover on the instrument and secure using a thumbscrew Restore power to the instrument SVC 4 60 Clean Replace FPD Filter WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME PHOTOMETRIC FPD DETECTORS USE
209. mbly Specific part numbers are not given in this section For all replacement part numbers refer to Sections 3 and 4 of the IPB portion of this document Detector Flow Manifold Assemblies and Injection Port Flow Pressure Control Modules respectively This document is not meant to provide instruction for first time installation of any of the options dis cussed Add on sheets exist for just this purpose and should be referenced when performing a first time installation TABLE OF CONTENTS PCOC EPC MPC Troubleshooting 0000 cece eee eee Remove Replace Inlet Flow Control Components Remove Replace Split Splitless Capillary Inlet Solenoid Valve Remove Replace Electronic Pressure Control EPC Components Remove Replace Manual Pressure Control MPC Components Remove Replace EPC MPC Pressure Control PCB 00eeae Typical Switch Settings for EPC MPC PCBS cc cece ne eee Replace Electronic Flow Sensor Module 0c cc cece cece eens Electronic Flow Sensor EFS Calibration 0 0 cece cece ees Setting the ZERO Calibration Value 0 eee eee Setting the GAIN Calibration Value 0 0 0 cece eee Entering Specific ZERO and GAIN Values 0 cee eee Replacing Repairing a Flow Manifold Block ccc eee ee neeee SVC 3 1 PCOC EPC MPC TROUBLESHOOTING The Programmable Cool On Column PCOC injection port is designed to allow
210. mee SPANNER NUT gt Nt PN at i COLLECTOR w MOUNT gt THERMAL STRAP 6 Usea wrench to remove the ignitor from the FID ignitor castle 7 Ensuring that the washer is in place between the ignitor castle and the threads of the ignitor install the new ignitor tightening it to a snug fit 8 Connect the ignitor wire lead connector to the mating connection on the ignitor wire which runs to the FID flow manifold 9 Restore all gas supplies 10 Restore power to the HP 5890 Series Il SVC 4 11 Remove Replace FID Diode Bridge Assembly WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT 1 Set the main power line switch to the off position RED O VISIBLE 2 Disconnect the power cable from its receptacle lt lt AN ae 3 Liftthe hinged top cover at its front edge exposing the detector area 4 Ifan autosampler is installed on the instrument it will be necessary to remove it and its mount ing bracket to allow removal of the left side cov er as follows a Remove the autosampler tray from its mounting bracket by first simultaneous ly lifting and turning the two tray locks which hold it in position then sliding the tray away from the instrument b Liftthe autosampler tray from its mount ing bracket and setit aside c Remove the autosampl
211. ments be made on active energized circuits WARNING MEASUREMENTS AND OR TESTS THAT NEED TO BE MADE ON ELECTRICALLY ENERGIZED PORTIONS OF THE INSTRUMENT SHOULD BE PERFORMED ONLY BY SERVICE TRAINED PERSONNEL WHO ARE AWARE OF ALL INVOLVED HAZARDS The Service Section of this manual contains proper step by step procedures for replacing electronic boards and other major assemblies These procedures include instructions that should be followed for both personnel and instrument welfare CAUTION The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes or enclosures Recommended Test Equipment The only piece of test equipment required to troubleshoot the instrumentis a good volt ohmmeter SVC 1 2 PARTA NON FUNCTIONING INSTRUMENT A totally non functioning or DEAD instrument is one that apparently isn t working at all It has no visual indications i e messages on its front panel and produces no noise or heat The most obvious cause for such a problem is that line power is not reaching the instrument or that the instrument is not turned on First check that the Line Power Switch is ON Then verify that the instru me
212. mitted to other devices on the loop OFF has the same meaning here as shown in the HP 5890A portion of the INET configuration table in the HP 3392A work file listing It is important to note that ON or OF F in this context are strictly INET definitions defined at the system controller They do not for example bear any relationship to whether or not a given detector assigned to the signal channel is turned on or off H RANGED versus FULL RANGE indicates the dynamic range for the data to be transmitted to other devices on the loop dynamic range for RANGED data is set at the HP 5890A according to the setpoint for ance 2 0 Dynamic range for FULL RANGE data is limited only by the detector itself The choice of the type of data to be transmitted is set at the controller SVC 10 11 E SeSe HP IL LOOPBACK TEST CALI B AND TEST function 7 The HP L LOOPBACK TEST may be performed any time to verify that HP 5890A INET communication is performing satisfactorily Testing involves setting up the HP 5890A to send an INET message directly to itself by connecting its INET output to its INET input The following procedure is used 1 Disconnect INET cables at their respective NSTRUMENT NETWORK N and OUT receptacles on the HP 5890A located beneath the top right cover panel 2 Choose either one of the cables and disconnect it at the next device on the INET loop 3 Connect this free cable t
213. mponent Install desired replacement component DISPLAY PCB Hs g KEYBOARD KEYBOARD CONNECTOR CONNECTOR BODY ELEMENT Od O0 oo0000 OO 000000 need O0 OOODUCG OO ooooco OO KEYBOARD BEZEL SVC 8 4 14 15 16 17 18 19 20 21 22 23 Install the display PCB onto the keyboard bezel making sure that the keyboard connector ele ment and keyboard connector body are properly installed and secure using four screws Align the locating tabs on the bottom edge of the replacement display PCB assembly with the locating slots on the bottom of the opening in the electronics bezel Tilt the top of the display PCB assembly toward the rear of the instrument and gently press on the display board near the top until the locking tabs click into place If removed install the detector PCB removed from position A on the main PCB Install connector J 1 into connector receptacle P1 on the main PCB When connector J 1 is properly seated the locking tabs on connector receptacle P1 will wrap around the edge of the connector locking it in place Install the right side panel and secure using four screws Install the electronics carrier top cover Restore all gas supplies Restore power to the instrument Observe the alphanu NORMAL INTEGRITY CHECK meric display as the in AT POWER ON strument performs an internal self diagnostic integrity check to en sure that the instrument
214. na anaa SVC 2 SPLIT SPLITLESS CAPILLARY INLET anssssssssnsnnaa SVC 2 Remove Replace Split Splitless Capillary Inlet 0 0 c ee eee SVC 2 PROGRAMMABLE COOL ON COLUMN INLET PCOC SVC 2 16 Remove Replace PCOC Inlet 2 0 0 0 cece eee eee SVC 2 INJECTION PORT COOLING FAN ceccueeeaeaeees SVC 2 20 Remove Replace Cooling Fan sctaainiae ruth enenrrasernake nne SVC 2 20 SVC 2 1 PACKED COLUMN INLET Remove Replace Packed Column Inlet WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS TINT LU CONNECTED AVOID A POTENTIALLY WA UD UU DANGEROUS SHOCK HAZARD BY J lt DISCONNECTING THE POWER CORD BEFORE 0 WORKING ON THE INSTRUMENT Set the main power line switch to the off position Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool Row N e When the heated zones are cool turn off all gas Supplies 5 Atthe bottom of the inlet s to be removed in side the column oven remove the column and hardware associated with the inlet s liner column liner nuts ferrules makeup gas adapt er etc 6 Remove the injection port cover by grasping its back edge and lifting it upward 7 Remove the two screws securing the left side panel along its bottom edge 8 Slide the leftside panel towards the LiD i rear of the instrument and lift LEFT a SIDE N P j 1 4 INCH SCREW AND WASHER
215. nect the ignitor wire lead connector to the mating connection of the diode bridge assembly lead adjacent to the ignitor Install the rear panel and secure using four screws Install the left side panel and secure using two screws Restore power to the instrument SVC 4 13 Remove Replace FID Collector Body Collector Assembly The FID collector body may be replaced as a piece part or the entire collector assembly may be re placed as a unit Refer to section 2 of the IPB portion of this document for part number information applicable to the FID detector WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME IONIZATION FID DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS 1 Setthe main power line switch to the off position RED O VISIBLE lt I 3 Allow time for the oven and heated zones to cool Hes 2 Disconnect the power cable from its receptacle 4 When the heated zones are cool turn off all gas supplies 5 Liftthe hinged top cover at its front edge exposing the detector area 6 TO REPLACE COLLECTOR BODY a Remove the optional PTFE chimney if in Stalled b Disconnectthe innitar wira wy oR lead connecto Vv IGNITOR connection ad V FF ignitor Y EN
216. nector PCB ribbon cable is to be replaced free and remove the cable from the connector on the communications PCB by releasing the locking tabs one on either side of the connector receptacle and pulling the cable straight out If the ribbon cable is to be replaced slide the old ribbon cable out of the opening in the elec tronics carrier If the ribbon cable is being replaced slide the new ribbon cable into the opening in the elec tronics carrier If the ribbon cable is being replaced install the new ribbon cable into the connector receptacle on the communications PCB When the con nector is properly seated the locking tabs on the connector receptacle will wrap around the edge of the connector locking it in place Install the ribbon cable into the connector receptacle on the rear panel connector PCB When the connector is properly seated the locking tabs on the connector receptacle will wrap around the edge of the connector locking itin place If a new rear panel connector PCB is being installed secure it to the rear panel using three screws SVC 10 6 18 19 20 21 22 23 Install the rear panel and secure using four screws If it was necessary to remove the right side panel install it and secure using four screws If it was necessary to remove the electronics carrier top cover install it now Restore all gas supplies Restore power to the instrument Observe the alphanu NORMAL
217. nector element etc individually Maintenance proce dures have been included to allow for the disassembly of the display PCB assembly in the event that the shroud assembly is not available in a timely manner etc TABLE OF CONTENTS KEYBOARD AND DISPLAY REPLACEMENT SVC 8 hl KEYBOARD AND DISPLAY TROUBLESHOOTING SVC 8 Replace Display PCB Assembly 0 0 00 cece eee eee ees SVC 8 SVC 8 1 Keyboard and Display Troubleshooting Problem 1 No visual indications of any a kind on display 2 Some portion ofthe display a is blank Bad LED etc 3 No keyboard control of instrument Probable Cause C Faulty display PCB assem bly Faulty display PCB ribbon cable Faulty main PCB Faulty display PCB assem bly Faulty display PCB ribbon cable Faulty main PCB Keyboard locked Faulty display PCB assem bly Faulty display PCB ribbon cable Faulty main PCB SVC 8 2 Corrective Action 1 2 3 Replace display PCB as sembly If problem persists remove replaced display PCB Install original display PCB assembly Go to probable cause b Replace display PCB rib bon cable If problem persists go to probable cause c Replace main PCB Shut off instrument and re Start All indicators should light during start up self test Observe suspect portion of display If any indicators are out re place display PCB If problem persists remove
218. nert gas to blow any fragments out of the detector weldment and clean the weldment with an approved solvent If the heat shield windows are not going to be replaced wipe them clean using a lint free lens tissue Be careful not to scratch the surface of the windows If necessary clean the windows with a solution of softsoap and warm water Rinse with distilled water NOTE During assembly of the detector always use new seals o rings gaskets and discard the old ones Assemble the heat shield gasket new first heat shield window heat shield disk stainless steel coupling and clamp to the detector weldment and secure using four screws and four lock washers Tighten screws evenly to ensure a gas and light tight seal Assemble the second heat shield window associated o rings new flange adapter and flange ring to the stainless steel coupling and secure using four screws Tighten screws evenly to ensure a gas and light tight seal Install the o ring for the sulphur filter in the flange adapter Install the sulphur filter in the flange adapter SVC 4 68 21 Slide the PMT tube assembly onto the detector assembly 22 Secure the PMT assembly to its support bracket using the extension spring 23 Install the FPD cover on the instrument and secure using a thumbscrew 24 Restore power to the instrument SVC 4 69 Replace FPD J et Assembly and First Heat Shield Window WARNING HAZARDOUS VOLTAGES ARE PRESENT IN TH
219. njection port cover Restore power to the HP 5890 Series Il SVC 2 11 SPLIT SPLITLESS CAPILLARY INLET Remove Replace Split Splitless Capillary Inlet WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS NTT CONNECTED AVOID A POTENTIALLY i WA IHL L DANGEROUS SHOCK HAZARD BY a lt L DISCONNECTING THE POWER CORD BEFORE N 9 WORKING ON THE INSTRUMENT Set the main power line switch to the off position Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool gt WwW N e When the heated zones are cool turn off all gas supplies 5 Atthe bottom ofthe inlet s to be removed in side the column oven remove the column and hardware associated with the inlet s liner column liner nuts ferrules makeup gas adapt er etc back edge and lifting it upward PRESS 7 Remove the two screws securing the left side HERE TO panel along its bottom edge COVER 8 Slide the left side panel towards the LID mi rear of the instrument and lift Val LEFT GN 7 SIDE AND WASHER SVC 2 12 10 11 12 13 14 15 16 17 18 19 20 21 22 Disconnect the Carrier Gas Inlet labelled C which terminates ata fitting either atthe EFS a chemical filter or a mass flow controller SEPTUM mounted on the flow panel PURGE Disconnect the Septum Purge Outlet labelled SPLIT
220. nnect the cell anode lead from the PCB interconnect e Loosen the screw securing the detector PCB interconnect clamp to the thermal strap FPD a Disconnect the signal cable from its con nector on the FPD detector PCB b Disconnect the high voltage cable from its connector on the FPD detector PCB CABLE 1009 98261 ED 3SVLIOA HOI SVC 4 89 CAUTION The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes or enclosures 9 Remove the detector PCB from the right side of the instrument by grasping it in the center area along its outer edge and pulling itstraight out Ifan interconnect is employed this will draw it out of the detector 10 Install the replacement detector PCB by sliding it into its mounting location on the main PCB If an interconnect is employed Installation of the PCB will insert the interconnect into the ther mal strap Use caution to avoid damaging the spring at the end of the interconnect 11 In order to install the detector PCB the components which retain the interconnects or other wiring must be tightened installed and or connected as applicable for a particular dete
221. nnect the power cable from its receptacle Allow time for the oven and heated zones to cool gt e W N e When the heated zones are cool turn off all gas supplies 5 Atthe bottom of the inlet s to be removed in side the column oven remove the column and hardware associated with the inlet s liner column liner nuts ferrules makeup gas adapt er etc 6 Remove the injection port cover by grasping its back edge and lifting it upward PRESS HERE TO FREE COVER 7 Remove the two screws securing the left side panel along its bottom edge 8 Slide the leftside panel towards the LID SHAFT rear of the instrument and lift L 1 4 INCH SCREW AND WASHER SCREWS 9 Disconnect the Carrier Gas Inlet labelled C which connects to a fitting either at the EFS or ata mass flow controller mounted on the flow panel 10 Disconnect the Septum Purge Outlet labelled EN P which connects to a pressure regulator PURGE TUBE IJ ECTION PORT CARRIER TUBE IN fitting mounted on the flow panel SVC 2 5 11 12 13 14 15 16 15 16 17 18 19 20 21 22 Cap the base of the inlet Remove the two screws in the top of the inlet top cover these screws secure the inlet base weldment to the inlet top cover Use a Pozidriv screwdriver to remove the two screws securing the top cover to the instru ment Lift the inlet top cover off
222. nnector for INJ A IN B DETA and DETB To measure the AUX zone remove the J 14 connector The pins are labeled on the main board next to the appropriate J connector Replace the cartridge heater if it is open or shorted If the cartridge heater tests O K and sensor test O K see temperature sensor resistance chart the problem is in the zone control on the main board and the main board should be replaced To measure resis tance of sensors remove connector P7 sensors are labeled on main PCB Zone temperature is unstable If Zone will not reach desired temperature or cycles over more then plus or minus 1 degree C then the insulation around the zone and the insulation of the oven shell should be examined and additional insu lation added ifnecessary Also refer to the operating manual to verify the zone is being used proper ly i e oven at 50 degrees C injection port at 100 degrees C This type of operation will not work The Main Board is generally serviced from a replacement aspect the introduction includes an illustra tion of its functional configuration followed by information aboutits connectors and test points Any replacement or space electrical parts that are subject to damage by static electricity will be shipped in static protective bags or containers Be certain to utilize these protective devices when storing items of this nature Generally since board or module replacement constitutes the majority of electronic repairs the
223. nsor Cable Assemblies Replacement of a heater sensor cable assembly which consists of the heater and sensor cartridges as well as the wiring connecting them to the main PCB is accomplished by partial removal of the applica ble heated zone component In addition the heater sensor cable assembly must be disconnected from the applicable connectors on the main PCB Removal of the wiring from the connectors on the main PCB is covered first followed by instructions for removal of the heater and sensor cartridges from the heated zone components Disconnect C onnect Heater and Temperature Sensor Wiring on Main PCB WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT 1 Set the main power line switch to the off position RED O VISIBLE ue 2 Disconnect the power cable from its receptacle Za 3 Turn off all gas supplies ice 9 4 Remove the four screws securing the rear cover to the instrument 5 Slide the rear cover towards the rear of the instrument oS This procedure requires precautions against ESD Electro Static Discharge Usea grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument SVC 6 4 6 Remove the electronics carrier top c
224. nstrument SVC 6 17 Remove Replace Detector Zone Heater and Sensor Cartridges Remove Replace TCD Heater and Sensor Cartridges WARHIHG PERFORM THE PROCEDURE FOR DISCONNECTING CONNECTING HEATER AND TEMPERATURE SENSOR WIRING ON MAIN PCB BEFORE PERFORMING THIS PROCEDURE 1 Allow time for the oven and heated zones to cool 2 Atthe bottom ofthe detector inside the column oven remove the column and hardware associated with the detector liner column liner nuts ferrules makeup gas AR x adapter etc o 3 Cap the detector b e F Cap the detector base 5 8 2 4 Liftthe hinged top cover at its front edge oe exposing the detector area c 5 Remove the TCD detector cover by removing two screws one from each side of the detector cover SOLENOID DETECTOR COVER 6 Cap the TCD vent port on the top of the detector This is not be required on a series con nected TCD 7 Remove the preformed thermal insulation from around the detector to expose the two screws securing the detector to the instrument mainframe 8 Ona series connected TCD disconnect the TCD to FID jumper tube from the TCD oven re turn exhaust vent port SVC 6 18 10 11 12 13 14 15 16 17 18 19 20 21 22 Remove the two screws securing the detector to the instrument and then lift the block up enough to expose the heater and sensor cartridge wires CAUTION bna to Handle the he
225. nt edge exposing the detector area TOP COVER TO FLOW SCREWS 6 Remove the electronics carrier top cover above the signal cable plugs and receptacles to expose the top edge of the TCD detector PCB 7 Remove the right side panel by removing four screws two each along its top and bottom edges m sh N SCREWS RIGHT SIDE ELECTRONICS PANEL CARRIER TOP COVER 8 Locate the solenoid valve to be replaced SVC 4 8 9 Trace the electrical leads from the solenoid valve to the J 24 connector on the TCD detec tor PCB lower right edge 10 Disconnect the lead connector from its recep tacle J 24 on the detector PCB by pulling it straight out 11 Note the solenoid valve fitting where each tube is attached to ensure that the new valve will be connected correctly Use caution when removing and installing the plastic M8 tubing nuts Excessive force can damage them 12 Disconnect the tubes from the solenoid valve by loosening the plastic fittings securing them The fittings should only be finger tight If more force is required to loosen them use a small pair of pliers to free the fittings Note the solenoid valve fitting where each tube is attached Corresponding tubes on the new detector must be connected to the same fittings 7O07 T DOTT Installed N C amp fs lt amp FRONT OF INSTRUMENT 13 Remove the solenoid valve and
226. nt power cord is plugged into a proper receptacle If neither of these acts restore the instrument to operation suspect that there may be a problem with the receptacle or the power being supplied to it This type of situation generally requires that a local electrical maintenance person be informed to reme dy the problem However on the rare occasion that power is being provided but the instrument is not working the problem area must be isolated by tests and measurements on the instrument WARHIHG MEASUREMENTS AND OR TESTS THAT NEED TO BE MADE ON ELECTRICALLY ENERGIZED PORTIONS OF THE INSTRUMENT SHOULD BE PERFORMED ONLY BY SERVICE TRAINED PERSONNEL WHO ARE AWARE OF ALL INVOLVED HAZARDS Any one of several problems internal to the instrument can cause the non functioning symptom Since the instrument operates under processor control a faulty component in the CPU or Clock sections of the Main Board may be the source of the problem More commonly a problem in the instrument s pow er supply would be the most likely to cause this type of problem Two bits of information plus the use of IPB should enable service trained personnel to isolate and then correct the cause of the problem if it is power related The first important bit of information is about the fuses that are internal to the instrument The second bit is the normal sequence of events that oc curs as the instrument is energized Power On Sequence Fuse Information Fuses have b
227. o both N and OUT NSTRUMENT NETWORK receptacles on the HP 5890A 4 Enter the following key sequence Edm MG U pon pressing _ the test is performed the HP 5890A both sends and verifies a diagnostic message to itself through the connected cable Each press of repeats the test Each test requires about one second Figure 13 8 shows displays to be expected lP aisislejo sjelL F EES ACTU FIAT ITLL ELD sjElL F ITJE SIT Figure 13 8 HPI L LOOPBACK TEST Displays SVC 10 12 The message PASSED SELF TEST indicates INET at least with respect to the HP 5890A is performing satisfactorily If FAI LED SELF TEST is displayed a bad cable may be indicated install a different INET cable and repeat the test If FAI LED SELF TEST is displayed again for a second cable electronic problems within the HP 5890A are indicated see Section 19 Electronic Troubleshooting for more information The LOOPBACK TEST may be used to check for continuity in an INET cable an open cable causes test failure Verify that the cable is at fault rather than the HP 5890A by testing a second cable If an intermittent cable problem is suspected the test may be re peated as necessary while flexing the cable particularly at its plugs An ohmmeter should also be used to test for problems itisa reliable method for testing continuity SVC 10 13 Section 11 POWER SUPPLY REPLACING POWER SUPPLY CO
228. ol When the heated zones are cool turn off all gas Supplies At the bottom of the detector s to be removed inside the column oven remove the column and hardware associated with the detector s liner column liner nuts ferrules makeup gas adapter etc TOP COVER 0 z INJ ECTION PORT COVER z yi o c NOTE PRESS hk ians HERE TO If an autosampler is installed the injection FREE COVER port cover will not be present Remove the injection port cover by grasping its back edge and lifting it upward Lift the hinged top cover at its front edge ae noo LID SHAFT exposing the detector area ay Remove the screw securing the ground 1 4 INCH NS SCREW strap to the hinged top cover SO AND WASHER Remove the 1 4 inch screw and washer SS securing the cover at its right side hinge point SVC 4 21 10 At the lower right edge of the cover press from right to left until the right side hinge releases 11 With the lower right side of the cover pushed in lift the right side of the cover and slide it to the right to remove the top cover and lid shaft as a unit 12 13 14 15 16 17 If an autosampler is installed on the instrument it will be necessary to remove itand its mount ing bracket to allow removal of the left side cov er as follows a Remove the autosampler tray from its mounting bracket by first simultaneous ly lifting and turning the two tray locks whic
229. ollector SOLDERED AT THIS assembly Desolder the soldered toroid lead from the up per portion of the collector assembly Remove the upper toroid lead from the collector assembly Install the new toroid leads to the collector as sembly SET SCREW Tighten the setscrew securing the lower toroid COLLECTOR wire to the collector assembly snugly ASSEMBLY l COLLECTOR Solder the upper toroid lead to the collector ASSEMBLY assembly Install the new toroid spacer assembly in the TOROID detector cover and secure with two screws AERACER Thread the bead power cable through the notch in the end of the detector cover making sure that only the heat shrink tubing not the bare wire contacts the cover x Secure the collector assembly to the detector cover using two Pozidriv screws CAUTION Do not handle the collector with bare hands Use needle nose pliers when handling the collector to avoid contaminating it with finger oils and or other contaminants l i NPD COLLECTOR ASSEMBLY Use needle node pliers to install the collector into the collector assembly from the bottom COLLECTOR i BODY gt Align the collector to the collector assembly NPD COLLAR 3 gt in accordance with the illustration below NOTE POSITIO OF COLLECTO When properly aligned secure the collector inside the collector assembly by tightening two setscrews Place the detector cover over the detector base and secure it with the three screw
230. ome more of a problem when high sensi tivity is required Addition of a fixed restriction downstream from the valve may help minimize the upset When possible changes in column length may also help reduce the upsets Fixed restrictors are used im mediately before flame detectors to prevent flameout and are used in some instances to prevent pressure surges from damaging TCD filaments Needle valves Nupro can be used as adjustable restrictors howev er they are used typically where a matched restriction is desired and not for preventing pressure or flow surges Often confused with baseline upsets an offset is a shift in the baseline that does not return quickly to the original level Baseline offsets may be caused by air leaks but more commonly are due to a change in SVC 7 7 gas purity or flow rate in the detector Poor carrier gas or improperly conditioned filters and traps should be suspected whenever offsets occur EXTRANEOUS PEAKS Air peaks are sometimes seen in a chromatogram when leakage occurs because the valve rotor does not seal properly These leaks may not be detectable by using the soap bubble method The Leak Test proce dure is described in Section 3 of this manual If a leak is suspected but cannot be located with soap bubbles a pressure check will determine definitely if a leak exists Extraneous peaks can occur sometimes due to improper conditioning of the valve or contamination If leaks are not apparent clean or condition th
231. on assembly AUTO INJECTION ASSEMBLY ok OPTIONAL MANUAL INJ ECTION ASSEMBLY _ SEPTUM DUCKBILL lt amp septum et PCOC INSERT SPRING AIR DEFLECTOR HEATER SENSOR CABLE ASSEMBLY CAVITY SLEEVE 13 Remove the air deflector using a Pozidriv screwdriver to remove the screw securing the air de flector to the inlet weldment 14 Use a Pozidriv screwdriver to remove the two screws securing the inlet to the instrument 15 Lift the inlet enough to expose the heated block 16 Remove the cryo blast tube from the inlet weldment SVC 6 43 24 25 26 28 29 30 31 32 33 34 35 36 Secure the inlet to the instrument using two screws Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile Carefully slide the heater and sensor cartridges into the heated block portion of the inlet Install the air deflector and secure it to the weldment using one screw Install the liner and all other hardware except the column removed in step 5 Restore the supply gas pressure Check for leaks at all of the newly mated fittings Turn off the supply gas Remove the cap plug from the end of the inlet Install the column and associated hardware removed in step 5 Install the left side panel and secure using two screws Install the injection port cover
232. ont edge exposing the detector area Remove the 1 4 inch screw and washer securing the cover at its right side hinge point INJ ECTION PORT COVER At the lower right edge of the cover press from right to left until the right side hinge releases Remove the screw securing the ground strap to the hinged top cover PRESS HERE TO FREE COVER With the lower right side of the cover pushed in lift the right side of the cover and slide it to the right to remove the top cover and lid shaft as a unit SS LID SHAFT 1 4 INCH SCREW AND WASHER SVC 6 28 10 11 12 13 14 15 16 17 18 19 Using a Pozidriv screwdriver remove the three screws securing the detector cover to the ther mal strap Remove the detector cover Disconnect any tubing attached to the detector exhaust tube Disconnect the cell collector lead from the PCB interconnect Loosen the screws securing the clamps which hold the interconnect in place CAUTION CLAMPS The following steps require protection against ES _ Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When handling PCBs Printed Circuit Boards always place them in static control envelopes Remove the detector PCB from the right side of the instrument by grasping it in the cent
233. ontrol through K1 However the oven heater is NOT energized until oven heat is requested SVC 1 4 PARTB AUTOMONITOR MESSAGES This section includes the symptoms that can appear as a visual indication or message on the front of the keyboard display module These messages may appear depending upon their seriousness either at the time that the problem occurs or in the instrument s Self Test Messages resulting from the automonitoring software within the instrument will be one of four classes FATAL ERR H2 ALARM FAULT WARN The FATAL ERR message is the most serious This class of message indicates that the HP 5890 SE RIES Il is essentially nonfunctional The instrument will always go to a NOT READY state and even the keyboard is inoperative FATAL ERR EPP amp FLOW Indicates Electronic Pressure Control EPC and Electronic Flow Sen sor EFS modules are installed simultaneously The instrument must be powered down and one of two modules must be removed to correct this situation No damage should occur to the instrument FATAL ERR BAD RAM indicates a problem with RAM chip and its circuitry in the CPU Section of Main Board Replace Main Board FATAL ERR BAD ROM indicates a problem with ROM chip and its circuitry in the CPU Section of Main Board Replace Main Board FATAL ERR gt 25 MS indicates that the 40 Hz task couldn t complete within 25 milliseconds Suspect a problem with the Clock Section of the Main Board however t
234. ool When the heated zones are cool turn off all gas supplies Remove the electronics carrier top cover by grasping itatthe rear and lifting upwards until its catch releases then pulling it towards the rear of the instrument ELECTRONICS CARRIER TOP COVER Remove the right side panel by removing four screws two each along its upper and lower edges Remove the two screws securing the left side panel along its bottom edge Slide the left side panel towards the rear of the instrument and lift SCREWS RIGHT SIDE PANEL SCREWS 9 Remove the four screws securing the rear cover to the instrument SVC 5 23 10 11 12 13 14 15 16 17 Slide the rear cover towards the rear of the instrument WARHIHG USE PROPER EYE PROTECTION WHEN WORKING WITH CRYOGENIC FLUIDS UNDER PRESSURE Shut off the cryogenic fluid supply Slowly loosen the cryogenic fluid supply at the valve to release any residual pressure Disconnectthe cryogenic fluid supply at its fitting to the valve CRYOGENIC FLUID SUPPLY CRYOGENIC Trace and free the valves wire harness to con FITTINGS ITEM USED VALVE DEPENDS ON FLUID EMPLOYED nector J 9 on the main PCB Disconnect connector J 9 from the main PCB by pulling it straight out of its receptacle Remove the valve assembly from the outside wall of the oven by removing three nuts and as sociated washers from around the edge of i
235. or PCB 10 Remove the right side panel by removing four screws two each d SCREWS SSS ELECTRONICS SS CARRIER TOP S COVER X SCREWS X RIGHT SIDE PANEL SVC 3 7 11 Locate the solenoid valve on the flow control bracket at the lower left side of the instrument 12 Disconnect all plumbing from the solenoid valve Label the tubes noting the valve fittings to which they connect to facilitate easy assembly SOLENOID VALVE 13 Loosen the two screws Se_ a 88 mounting bracket 14 Remove the solenoid valve from the flow control bracket 15 Install the replacement solenoid valve in the same location and orientation as the old one 16 Secure the solenoid valve to the flow control bracket by tightening two screws 17 Trace and free the solenoid valve electrical leads along their path to the P8 connector at the upper right corner of the main PCB 18 Route the leads for the new solenoid valve along the same path securing them with plastic wire ties SVC 3 8 19 20 21 22 CAUTION When removing a connector from a receptacle pull on the connector not on its wires Pulling on the wires may cause breakage Disconnect connector P8 from its associated connector on the main PCB by pulling it straight out The solenoid valve leads are connected to ei ther the VLVA or VLVB outputs of connector P8 Use the lance release tip of an AMP pin extrac tion lance reset tool
236. or PCB the components which retain the interconnects or other wiring must be loosened removed or disconnected as applicable for a particular detector TCD Disconnect the detector filament and del ta t temperature sensor leads at their con nector block on the detector PCB Usea small flat blade screwdriver to press each wire lead release located adjacent to each connection FID CUAMDS Loosen the screws securing the clamps holding the detector PCB interconnect in place Nien wun T NPD a Usea Pozidriv screwdriver to remove the three screws securing the detector cover to ETECTOR COVER the thermal strap COLLECTOR b Disconnect the NPD bead power cable from the detector PCB by pulling it straight off INTERCONNECT LAMP SCREW c Loosen the screws securing the detector PCB interconnect clamps to the thermal strap SVC 4 88 19233A 19235A ECD a Using a Pozidriv screwdriver remove the three screws securing the detector cover to the thermal strap b Remove the detector cover c Disconnect the cell collector lead from the PCB interconnect d Loosen the screws securing the clamps which hold the interconnect in place G1223A G1224A ECD a Using a Pozidriv screwdriver remove the screw securing the detector top cover to the thermal strap b Remove the detector top cover c Disconnect any tubing attached to the de tector purge and vent tubes TOP COVER d Disco
237. or proper seating The sample will contact either Te flon low temperature or polyimide high temperature as well as the stainless steel of the valve The rotor fits precisely into the body and nests in the conical seat Itis held in place by a preloaded assembly The grooves in the rotor determine the paths between specific ports and run in a transverse fashion across the rotor The index pin prevents rotation beyond either stop of the index lip Valve ports are connected by the grooves only when the index pin is close to or against either stop of the index lip Any intermediate position results in shutoff of flow through the valve and possible valve damage if left in this position General Purpose Valves GPVs The standard general purpose valves have 1 16 inch zero dead volume fittings They may be classi fied by the number of ports they contain and their useful temperature range The valves with Teflon ro tors may be used in the range 0 to 175 degrees C whereas the valves with polyimide rotors function bestin the range of 100 to 300 degrees C Both types of valves are available with 6 or 10 ports de pending on the desired application Teflon rotors are not interchangeable with polyimide rotors in the same valve body Because of the dif ference in the operating temperature ranges do not mix these two valve types in the same system CAUTION The life of any valve is shortened if not used within its specified temperature range
238. ove each one by squeezing its ribbed sides while si multaneously pulling it out of the receptacle Remove the screw and lock washer securing the ground strap to the transformer bracket SCREW INSULATOR BUSHING CONNECTOR P10 CONNECTOR J 27 CONNECTOR J 26 GROUND STRAP SVC 11 6 11 12 13 14 15 16 17 At the right side of the instrument below the main PCB remove the power switch from its Slot by prying the plastic locking tabs on each side of the switch in toward the switch body PRESS HERE Remove the four push on type connectors from the rear of the switch Remove the three nuts and one screw securing PULL OUT OF the transformer bracket to the AC power supply ca base Slowly lift the transformer and transformer bracket off of the AC power supply base as a unit being careful not to strain the wiring from connector P10 and the power switch SCREW INSULATOR BUSHING AC POWER SUPPLY BASE TRANSFORMER EXTENSION BRACKET TRANSFORMER CABLE FOR UPGRADED SERIES I POWER SUPPLY ASSEMBLY SHOWN REMOVED FROM INSTRUMENT FOR CLARITY Free the wiring from connector P10 and the power switch from their associated paths in the electronics carrier Remove the transformer and transformer bracket from the rear of the instrument as a unit Remove the four screws and four insulator bushing which secure the transformer to the trans former bracket SV
239. ove the two screws securing the sealer TO PRESAURE C ONTRON ECE plate to the proportional control valve Remove the carrier input line from the fitting housing VALVE TRANSDUCER BRAZEMENT FITTING HOUSING PROPORTIONAL CONTROL VALVE SVC 3 12 22 Remove the two screws securing the fitting housing to the proportional control This will free the valve transducer brazement from the proportional control valve VALVE SCREWS TRANSDUCER BRAZEMENT a O RING FITTING HOUSING PROPORTIONAL CONTROL VALVE 23 Remove the four screws securing the inlet bypass clamp to the proportional control valve 24 Replace any damaged or suspect components particularly o rings RESTRICTOR RESTRICTOR PCOC INLET BRAZEMENT INLET BYPASS CLAMP SCREW When connecting lines and fittings ensure that all o rings are properly installed 25 Assemble the EPC components in the reverse order of disassembly 26 Restore all gas supplies 27 Leak check all installed fittings 28 If the system is leak free install the left side panel and secure using two screws 29 Restore power to the instrument SVC 3 13 Remove Replace Manual Pressure Control MPC Components gt WwW N FF WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME IONIZATION FID AN
240. oved from around the inlet Install the top cover over the inlet Secure the inlet to the top cover using two screws Secure the top cover and inlet to the instrument using two screws Remove the cap plug from the end ofthe inlet Install the column and associated hardware removed in step 2 BOTTOM INSULATION Install the right side panel and secure using two screws Install the electronics carrier top cover Slide the rear cover onto the instrument COVER SR HEATER SENSOR CABLE ASSEMBLY PURGED PACKED INLET WELDMENT BOTTOM INSULATION Secure the rear cover to the instrument by installing and tightening four screws Install the injection port cover Restore the supply gas pressure Restore power to the HP 5890 Series Il SVC 6 12 Remove Replace Split Splitless Split Only Capillary Inlet Heater and Sensor Cartridges WARNING PERFORM THE PROCEDURE FOR DISCONNECTING CONNECTING HEATER AND TEMPERATURE SENSOR WIRING ON MAIN PCB BEFORE PERFORMING THIS PROCEDURE Allow time for the oven and heated zones to cool INJ ECTION PORT COVER At the bottom of the inlet inside the column oven remove the column and hardware asso ciated with the inlet liner column liner nuts ferrules makeup gas adapter etc PRESS Remove the injection port cover by grasping its 6 COVER back edge and lifting it upward aW LID SHAFT Remove any insulation from around the top of the inlet sw
241. over by grasping it at the rear and lifting until its catch releases the pulling it toward the rear of the instrument SCREWS 7 Remove the right side panel by removing four screws two each along its top and bottom edges E ee Ssa SCREWS 8 ac ELECTRONICS ESS il CARRIER TOP COVER RIGHT SIDE PANEL 8 Trace the leads of the faulty heater and or sensor cartridge to their terminating connectors at the upper right corner of the main PCB located at the right side of the instrument All temper ature sensor leads terminate at connector receptacle P7 on the main PCB at the upper right corner of the PCB All heater cartridge leads terminate at connector receptacle J 9 on the main PCB at the right side of the PCB 9 Route the replacement heater or sensor cartridge leads along the same path 10 Disconnect or cut any plastic cable ties securing the old heater sensor cable assembly along its path 11 Secure the leads of the replacement heater sensor cable assembly to the instrument with new plastic cable ties SVC 6 5 12 13 14 15 When disconnecting a plug pull on the plug noton its wires Pulling on the wires may cause breakage Disconnect connector P10 from its receptacle on the main PCB by pulling the plug straight out of the receptacle HIGH VOLTAGE COVER CONNECTOR P10 Remove the high voltage cover from the upper right portion
242. ow M anifold Block 1 0 ccc cece cece eee ees SVC 3 25 SECTION 4 DETECTORS wicciccesiiacsccttivisessiiien cies dies SVE 4 1 REPLACING DETECTOR COMPONENTS cece eee eee eens SVC 4 1 DETECTOR TROUBLESHOOTING ccecce SVC 4 3 THERMAL CONDUCTIVITY DETECTOR TCD cece eee eee SVC 4 4 Remove Replace TCD Detector Weldment cece cece cece eens SVC 4 4 Remove Replace TCD Solenoid Switching Valve ouaaa SVC 4 8 FLAME IONIZATION DETECTOR FID ccecce SVC 4 11 Remove Replace FID Ignitor 2 6 ccc eee eens SVC 4 11 Remove Replace FID Diode Bridge Assembly ccc cece eee eee eee SVC 4 12 Remove R eplace FID Collector Body Collector Assembly 000s cee eee eee SVC 4 14 Remove Replace FID Jet cee ete SVC 4 18 Remove Replace FID Detector Weldment ccc cece eee ee eens SVC 4 21 NITROGEN PHOSPHORUSDETECTOR NPD eee ee SVC 4 28 Remove R eplace NPD Active Element Power Transformer Toroid 04 SVC 4 28 Remove ReplaceNPD Collector oo cc ccc cece eee eee eee e eee teen ees SVC 4 33 Remove fReplaceNPD Jet 1 0 ccc cece cee eee eee SVC 4 35 Remove Replace NPD Active Element Power Control cece cere eee ee SVC 4 38 Remove Replace NPD Detector Weldment cece cece ee eee ees SVC 4 41 ELECTRON CAPTURE DETECTOR ECD ccc eee eee eee eee SVC 4 48 ELECTRON CAPTURE DETECTOR ECD 19233A 19235A VERSIONS SVC 4 49 Remove R eplace ECD Cells Weldment and or H eate
243. ower heated block Install the removed insulation in the lower heated block Slide heater and sensor cartridges into the new block Install the lower heated block in its mounting position Secure the lower heated block to the instrument using two screws Install any removed insulation in the lower heated block Place the new weldment in the lower heated block Install the upper heated block on the weldment Secure the upper heated block and detector weldment to the lower heated block using two screws Remove the cap from the base ofthe detector inside the column oven Carefully slide the ECD cover over the anode shaftand anode and install it on the detector Slide the locking tab on the ECD cover forward capturing the cover over the anode shaft of the cell weldment Tighten the locking screw on the ECD cover Connect the cell collector lead from the cell anode to the PCB interconnect Position the detector cover over the detector Secure the detector cover to the instrument with a screw Install any hardware removed in step 5 of this procedure liner column liner nuts ferrules makeup gas adapter etc Plug the detector purge and exhaust vent tubing Restore supply pressure and check for leakage at the column and makeup gas adapter fit tings 46 47 48 49 50 51 52 53 If no leaks exist shut off the supply pressure Remove the plug from the detector purge and exhaust vent tubes Connect the purge and
244. panel by removing four screws two each along its upper and lower edges l SCREWS er RIGHT SIDE PANEL ELECTRONICS CARRIER TOP PANER SCREWS SCREWS SVC 5 19 9 Facing the rear of the instrument locate the oven flap motor mounted on the oven at its lower right corner Trace and free its wire harness to the P8 connector on the main PCB 10 Disconnect connector P8 from the main PCB by pulling it straight out of its receptacle SCREW _ 19 COUPLING 2 C N lt SET SCRE A SCREW iih i fi a WHEN DISCONNECTING A PLUG PULL ON THE PLUG NOTONITS WIRES PULLING ON THE WIRES MAY CAUSE BREAKAGE 11 Remove the air duct located above the upper oven flap by removing two nuts one each along its upper and lower edges 12 Use a Pozidriv screwdriver to remove the two screws securing the flapper bracket to the instru ment 13 Lift the flapper bracket assembly from the instrument 14 Use a hex wrench to loosen the motor shaft setscrew on the flexible coupling closest to the flap motor 15 Use a small Pozidriv screwdriver to remove the motor from the bracket 16 Insert the shaft of the new stepper motor into the flexible coupling on the flapper assembly 17 Secure the motor to the flapper bracket using two screws 18 Tighten the setscrew on the coupling to a snug fit 19 Mount the oven flap assembly on the instrument and secure using two screws SVC 5 20 20 Mount the ai
245. perational functions These are explained in the operation and reference manuals To enter any of the CALIB AND TEST Clear Dot modes press the Clear key the Decimal key and a number from 0 through 9 The actual digits 4 5 7 8 9 represent the typical test modes These are as follows CLEAR DOT 4 DISPLAY MEMORY CLEAR DOT 5 SELFTEST CLEAR DOT 7 HPIL LOOPBACK TEST CLEAR DOT 8 SET PID CONTROLS CLEAR DOT 9 DISP TEMP amp DEMAND To escape from any of the CALIB AND TEST Clear Dot modes press any of the instrument function keys Calib and Test Clear Dot 4 Display Memory This diagnostic routine is initiated from the keyboard by pressing Upon entering this mode a single memory address ADDR and a value VAL will appear on the instrument front panel visual display At this time both the address and the value will be displayed in hexadecimal In this hexadecimal mode the value displayed is two bytes four digits of information The rightmost two digits one byte represent the actual contents of the indicated address The other two digits correspond to the contents of the next address For example ifaddress 1111 were keyed in and the value F224 resulted 24 is the contents of address 1111 and F2 is the contents of address 1112 This could be verified by ad dressing 1112 then the F2 would become the two rightmost digits i e 3DF2 In the Display Memory mode some keys on the keyboard are redefined A key becomes A in hexadecimal
246. pressure leaks always install a new anealed seal when the old seal has been removed Tighten the retaining nut at the base of the shell weldment Install the reducing nut flat washer and anealed seal onto the base of the retaining nut Install the lower insulation cover and three pieces of lower insulation inside the column oven Tighten the two screws which secure the lower insulation cover inside the column oven SVC 2 10 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 Replace any insulation that was removed from around the inlet Bend the tubes running from the new insert assembly and split vent tube to the inlet flow control components so that they lay within the U shaped channels to the left of the inlets Install the tubes removed in steps 9 through 11 Install the insert assembly on the shell weld ment and secure using a inch wrench Install the tubing nut and associated split vent tube on the shell weldment and secure using a 1 2 inch wrench Install the liner in the shell weldment Install a cap or plug on the end ofthe inlet in side the column oven Restore the supply gas pressure Check for leaks at all of the newly mated fittings Turn off the supply gas Remove the cap plug from the end ofthe inlet Install the column and associated hardware removed in step 5 Install the left side panel and secure using two screws Install the i
247. properly NOTE When installing a series connected TCD make sure its oven return exhaust vent tube extends into the oven Connect and tighten tubing from the detector to the solenoid switching valve finger tight En sure that the tubing is installed at their proper fittings on the TCD solenoid valve Connect the TCD filament and delta T tem perature sensor leads at the connector block on the detector PCB making sure the filament leads are connected properly per the illustration at the right TO FLOW BLOCK Restore supply pressure and check for leakage ene GAS TYPE at all installed fittings DELTA T 3 NAAT If no leaks exist turn off the supply gas SENSOR De ee Remove the caps from the detector base and the vent port When installing insulation use care not to plug the vent port If flow is interrupted while the TCD is on it will shorten its life dramatically Taking care not to block the vent port install insulation around the detector block Install the electronics carrier top cover CAUTION Use caution not to crimp the filament and delta t sensor leads when installing the TCD detector cover Install the TCD detector cover and secure using two screws Install column and any other hardware removed in step 5 of this procedure Restore supply pressure Restore power to the instrument Run a TCD Test Sample Chromatogram refer sure that the system is operating properly If T
248. r and all at tached components from the thermal strap and set aside Use a 1 4 inch nut driver to remove the jet from the detector weldment Use an inert gas to blow out the detector weld ment cleansing it of any debris Ensure that there is no debris in the detector weldment Replace the jet with a new jet Although re placement is highly recommended the jet may be cleaned and installed at the operator s dis cretion Use an approved solvent and a clean ing wire to clean jets SVC 4 36 COVER DETECTOR a COVER 5 RCONNECT J CLAMP SCREW COLLECTOR DETECTOR WELDMENT CAUTION Do not over tighten the jet Over tightening may permanently deform and damage the jet the detector base or both Install the replacement jet finger tight Use two fingers on the nut driver to obtain this tight ness Tighten the jet 1 8 turn past finger tight using the nut driver Atthe bottom of the detector inside the column oven install the column and any associated hardware removed in step 12 CAUTION The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always 19 20 21 22 23 24 25 26 place the
249. r column liner nuts ferrules makeup gas adapter etc NOTE If an autosampler is installed the injection port cover will not be present 6 Remove the injection port cover by grasping its back edge and lifting it upward 7 Liftthe hinged top cover at its front edge ces exposing the detector area lay LID SHAFT 8 Remove the 1 4 inch screw and washer 1 4 INCH securing the cover at its right side hinge SS iin RHR point 9 Remove the ground strap from the hinged top SO cover by removing a screw SVC 4 41 TOP COVER 0 g vi INJ ECTION PORT COVER o c PRESS HERE TO FREE COVER 10 At the lower right edge of the cover press from right to left until the right side hinge releases 11 With the lower right side of the cover pushed in lift the right side of the cover and slide it to the right to remove the top cover and lid shaft as a unit 12 Ifan autosampler is installed on the instrument it will be necessary to remove it and its mount ing bracket to allow removal of the left side cover as follows a Remove the autosampler tray from its mounting bracket by first simultaneous ly lifting and turning the two tray locks which hold it in position then sliding the tray away from the instrument b Liftthe autosampler tray from its mount ing bracket and set it aside c Remove the autosampler bracket by removing the 6 screws securing it to the instrument 13 Remove th
250. r duct over the upper oven flap and secure using two screws 21 After the new motor has been installed route its wire harness along the same path used by the old harness and secure it with plastic wire ties SCREW M4x8mm 0515 0910 FLAPPER BUSHING 05890 20730 FLAPPER OVEN FLAP BRACKET PINS 05890 00440 1251 5963 FLEXIBLE COUPLING 1500 0671 LOCK WASHER STEPPER MOTOR 2190 0468 05890 60940 SCREW M3 x 6 mm 0515 0055 SVC 5 21 22 Use the lance release tip of an AMP pin extrac 23 24 25 LANCE RESET 26 27 28 29 tion lance reset tool 8710 1542 to remove the appropriate pins from the old harness from connector P8 The tool features a lance re lease tip and a lance reset tip The lance re lease tip is used to depress the pin locking lance to extractthe pin from a connector The lance reset tip positions a locking lance to its proper height to ensure retention of the pin in the connector Prepare the pins corresponding to the replace ment stepper motor by adjusting their locking lances using the lance reset portion of the tool Insert the pins for the replacement stepper mo tor into their appropriate locations in the plug making sure the locking lance on each pin seats into its hole through the side of the plug Gently pull on the wire to ensure that the pin is locked in the connector LOCKING LANCE CAVITY TAPER LOCKIN
251. r right until the tab on the bottom left edge of the cover comes free Raise the back of the cover and Slide it towards the rear of the instrument Lift the detector top cover to expose the FPD detector weldment SVC 4 76 9 Release the extension spring securing the PMT assembly to its support bracket 10 Remove the photomultiplier tube PMT assembly and sulphur filter from the detector assembly and set en al SULPHUR FILTER y PMT ASSEMBLY 4 CHIMNEY AND BRACKETRY REMOVED FOR CLARITY 11 Remove the drip tube from the exhaust tube atthe top of the detector 12 Remove the exhaust tube from the detector using a 9 16 inch wrench 13 Remove the chimney assembly by removing the two screws securing itto the chimney back CHIMNEY 14 Loosen the three screws which secure the A E screw clamp which secure the detector to the chim ney back 15 Use a 9 16 inch wrench to loosen the nut hold Pat ing the weldment exit tube to the jet assembly P It will be necessary to hold the jet assembly with a 1 2 inch wrench to prevent rotation 16 Pull the heater and sensor from the detector weldment assembly 17 Carefully lift the detector vertically from the crime transfer tube so as notto damage the fused SECURING silica liner SCREWS 18 Inside the oven remove the column to the FPD SVC 4 77 19 20 Remove the nut and ferrule Vespel from the transfer tube weldment Remove th
252. r to the instrument 5 Slide the rear cover towards the rear of the instrument CAUTION This procedure requires precautions against ESD Electro Static Discharge Usea grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument 6 Usea 7 mm nut driver to remove the screw securing the upper portion of the dual duct as sembly to the outer oven shell 7 Use a Pozidriv screwdriver to loosen but not remove the screw securing the lower portion of the dual duct assembly to the outer oven shell DUAL DUCT ASSEMBLY 8 Tilt the upper portion of the dual duct assembly out of the rear of the instrument while lifting it ko pe off of the loosened lower screw Jf oe LOWER POWER SUPPLY TRANSFORMER AND BASE SVC 11 2 10 11 12 13 14 15 16 17 CAUTION When disconnecting a plug pull on the plug noton its wires Pulling on the wires may cause breakage Disconnect push on type connectors J 1 J 2 J 3 and J 4 from blade connectors P1 P2 P3 and P4 respectively by grasping each one and pulling it straight off of its terminal Disconnect connectors J 26 J 27 and J 28 from their respective receptacles Remove each one by squeezing its ribbed sides while simultaneously pulling it out of the receptacle Use a 7mm nut driver to loosen but not remove the mounting nut corr
253. racket using the extension spring Install the FPD cover on the instrument and secure using a thumbscrew Restore power to the instrument SVC 4 84 Adjust High Voltage After the replacement of a photomultiplier tube it may be necessary to adjust the output of the high volt age supply to the Photo Multiplier Tube PMT in order to attain the optimum sensitivity After installing the PMT the FPD check out performance verification mustbe performed Results are compared with those of the original PMT Assuming gas flow rates are correct and the system leak free the PMT high voltage should be altered only if there is a significant change in sensitivity The high voltage is originally set at the factory for optimum sensitivity signal noise ratio 0 90 0 06 Vdc correspond ing to 850 V dc 50V dc atthe PMT The PMT voltage limits are 0 72 V dc to 1 05 Vdc corre sponding to a PMT voltage of 670 Vdc to 990 Vdc 1 Remove the electronics carrier top cover 2 Remove the right side panel by removing four screws two each along its top and bottom edges B D f EG ELECTRONICS CARRIER TOP COVER 20000 20009 fo Jf 2 a SCREWS SCREWS RIGHT SIDE PANEL NOTE Noise will appear only about 2 3 as large on analog signal paths than on digital due to the high band pass filtering of signal on analog channels WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE
254. rconnect clamp screws on the thermal strap Install the right side panel and secure using four screws Install the electronics carrier top cover Restore all gas supplies Restore power to the instrument SVC 4 32 Remove Replace NPD Collector WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT NITROGEN PHOSPHOROUS NPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS Set the main power line switch to the off position RED O VISIBLE UN Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool A Us Po When the heated zones are cool turn off all gas supplies 5 Liftthe hinged top cover at its front edge exposing the detector area 6 Use a Pozidriv screwdriver to remove the three screws securing the detector cover to the ther mal strap COVER SPACER TOROID WIRE K SOLDERED AT THIS POINT COLLECTOR SET SCREW az 7 Usea 1 5 mm hex wrench to loosen the two set screws which secure the collector inside the collector assembly ey po x Do not handle the collector with bare hands SET SCREW COLLECTOR Use needle nose pliers when handling the coutecror ASSEMBLY collector to avoid contaminating it with finger SET SC
255. re Control Range 1 to 100 psi Flow range dependent on column 10 250 ml min Pressure Programming 0 01 to 99psi minute Retention Time Reproducibility 0 001 0 004 minutes Average performance for C10 C40 hydrocarbon mixture Most compounds 0 001 0 002 minute Repeatability of Set Point Values lt 0 050psi 0 35kPa Stability over 72 hours lt 0 060 psi 0 42kPa Pressure Noise high frequency lt 0 025psi 0 17kPa Average Linearity 2 80psi lt 0 100psi 0 7kPa Midrange Accuracy 20 40psi lt 0 050psi 0 35kPa Pressure recovery after system disturbance Repeatability of set point value agter septum change and 5 minute equilibration 1 Manual Pressure Control 0 1 0 2psi 0 7 1 4kPa Electronic Pressure Control 0 050psi 0 35kPa Manual Pressure Control 1 minute to 99 12 hours to 100 SVC 3 2 Electronic Pressure Control 1 second to 99 Safety Shutdown Standard If the system is unable to reach or maintain pressure set point value after 45 seconds the following 3 things happen The alarm relay is triggered and the alarm sounds immedi ately Pressure Control Valve shuts off all but a few ml min of flow bypass flow still permitted The oven and all heated zones are shut down This is a Fatal Error The only way to recover is to power cycle the GC If the leak has not been fixed the same sequence will repeat The Column head pressure may be controlled by either of two systems Manual Presure Control MPC or Ele
256. re harness to its connector receptacle J 28 on the AC power board WHEN DISCONNECTING A PLUG PULL ON THE PLUG NOT ON ITS WIRES PULLING ON THE WIRES MAY CAUSE BREAKAGE 14 Disconnect connector J 28 from its receptacle by pulling it straight up while squeezing its ribbed sides 15 Locate and remove the fan motor ground wire by removing the nut securing it to the instrument 16 Remove the three nuts and six associated washers securing the motor to the oven SVC 5 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 GROUND WIRE FAN MOTOR CONNECTOR RECEPTACLE J 28 CONNECTO WIRING R Remove the oven fan motor from the instrument Install the new fan motor and secure using two washers and one nut at each mounting location Tighten the nuts firmly Connect the motor wire harness plug to connector receptacle J 28 on the AC power board Connect the motor ground wire to the oven wall and secure using a nut Install the fan on the motor shaft and position it so its setscrew will seat against the flat portion of the shaft Tighten the setscrew Install the oven heater fan shroud and secure with four screws Feed a screwdriver through a hole in the shroud and gently spin the fan Listen to determine if the fan touches anything while turning If any noise is heard open the shroud and repeat steps 4 through 7 and 18 through 22 adjust ing the pos
257. red without affecting other devices on the INET loop Note that global mode has two states if GLOBAL flashes default mode when displayed the HP 5890A isin global mode but NOT configured into the INET system When the HP 5890A is properly configured into the INET system GLOBAL is displayed continuously T his feature provides a convenient diagnostic to determine if system configuration has occurred at least as far asthe H P 5890A is concerned INET HP IL Addresses Figure 13 6 shows displays occurring either in verifying an INET address set through automatic loop configuration or in entering a specific H P IL default address used when the HP 5890A isincluded in an HP IL loop without automatic configuration The address is maintained in battery protected memory along with other instrument setpoints SVC 10 9 INET HP IL Addresses Figure 13 6 INET HP IL ADDR Displays VERIFYING THE HP 5890 Series Il INET ADDRESS In Figure 13 6 note the two numeric values following ADDR The first of these numbers is the INET address for the HP 5890A determined via automatic loop configuration The SPECIFIC number shown depends upon how INET cables are connected among devices included in the loop The value shown in the example 1 implies the HP 5890A is the first instrument on the loop starting from the OUT receptacle on the controller device the controller is always defined as 0
258. release tip is used to depress the pin locking lance to extract the pin from a connector The lance reset tip positions a lock ing lance to its proper height to ensure reten tion of the pin in the connector LANCE RELEASE TIP CANCE DASH NUMBER KESET TIP MARKED HERE TOOL STOP LANCE RELEASE TIP e INSERT TIP LOCKING HERE BACK OF CAVITY BACK OF CONTACT HOUSING TYPICAL SVC 5 13 23 24 25 26 27 28 29 30 31 32 Prepare the pins corresponding to the replace ment sensor cartridges by adjusting their lock ing lances using the lance reset portion of the tool Insert the pins for the replacement sensor into their appropriate locations in the plug making sure the locking lance on each pin seats into its hole through the side of the plug Gently pull on the wire to ensure that the pin is locked in the connector Insert connector P7 into its corresponding re ceptacle on the main PCB LOCKING LANCE CAVITY TYPICAL BACK OF HOUSING LANCE TAPER LOCKING RESET LANCE RECEPTACLE BOX TYPICAL Install the insulation removed earlier in the sensor guide around the sensor wire leads Replace the panels removed at the beginning of this procedure Install any columns and associated hardware removed at the beginning of this procedure Connect any gas supplies disconnected in step 4 of this procedure Restore power to the instrument Ensure that the oven operates
259. roperly at a given temperature e g 100_C SVC 5 10 Replace Oven Temperature Sensor WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT Set the main power line switch to the off position RED O VISIBLE lt I Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool BRC OOF MB When the heated zones are cool turn off all gas supplies 5 Remove the electronics carrier top cover by grasping it atthe rear and lifting upwards until its catch releases then pulling it towards the rear of the instrument 6 Remove the right side panel by removing four screws two each along its upper and lower edges 7 Remove the two screws securing the left side panel along its bottom edge 8 Slide the left side panel towards the rear of the instrument and lift SCREWS per x RIGHT SIDE ELECTRONICS PANEL CARRIER TOP COVER SCREWS SCREWS 10 Slide the rear cover towards the rear of the instrumen 11 Remove columns and other hardware from any installed inlets and detectors which pre vents free access to the heater shroud 12 Remove the four screws securing the oven heater fan shroud 13 Carefully swing the left edge of the shroud towards the front of the instrument SVC 5 11 FAN SHROUD oe e
260. rts are made from Nitronics 60 nickel steel If required the valve may also be produced from Hastelloy C External tubing plumbing is connected to the valve body ports by ferrules and fittings provided with the instrument All general purpose valve bodies include mechanical stops in their index lips The stops limit rotor rota tion i e 60 degrees 90 degrees so the correct flow path results when the index pin is close to or against either stop of the index lip SVC 7 9 CAUTION Any intermediate position of the rotor may result in an interrupted flow path which could cause damage to the valve or other components in the chromatograph The letter of the rotor type stamped into the valve body indicates the rotor installed in the particular body P Polytetrafluorethylene Teflon rotor may be used from 0 to 175 degrees C This low tempera ture valve may be unmarked no P PT High Temperature polyimide rotor may be used from 100 to 300 degrees C This high tem perature valve may be marked with PT or just T The rotor seat of the valve body is a highly polished conical surface This finish precludes adsorption of mostGC samples Additionally with a properly seated rotor the polished surface will prevent leakage around the rotor and between non selected ports The rotor assembly is essentially a one piece stainless steel part with an integral molded and ma chined conical hub and several parts necessary f
261. s FAULT EPP RAM TEST indicates the RAM has failed selftest This requires board replacement FAULT EPP ROM TEST indicates the ROM has failed selftest and should be replaced FAULT INET CPU indicates that the Communications Interface Board is not responding properly Typi cally this message is caused by a faulty microprocessor CPU on the Interface Board FAULT INET CPU RAM indicates that the read write memory internal to the CPU on the Interface Board is not functioning as expected Replace either the Interface Board or its CPU SVC 1 6 FAULT INET RAM indicates that the RAM chip on the Interface Board is not responding properly Typi Cally the RAM chip on the Interface Board should be replaced FAULT INET ROM indicates that the ROM chip on the Interface Board is not responding properly Typi Cally the ROM chip on the Interface Board should be replaced Another good technique to investigate multiple messages after noting the currently displayed mes sage is to switch the power line switch of the instrument off and then on This will force the instrument to process through its initializing Selffest During this testing sequence indications other than the pre viously displayed message may appear to provide more information By running the instrument Selffest either at power turn on or through the Calib and Test Clear Dot Modes WARN messages may appear The WARN message indicates that a condition exists that may n
262. s Memon test to the instrument by in ven STATUS stalling and tightening e run NOT four screws INITIAL READY Restore all gas sup f ACTUAL SETPOINT 5890A Self testing in plies TTETSTTITINIGT TSTITGINJATL P AITTH progress LEDs off except possibly Restore power to the OVEN uni STATUS NOT READY instrument RAT TIME O run NOT READY Observe the alphanu meric display as the in ACTUAL SETPOINT strument performs an PIAISIS E D SIE L F HEIST Message indicating normal termination of diagnostic i di j tests after power restoration ee Selb diagnostig OVEN FINAL STATUS User sanne remain in integrity check to en oo T TIME RUN force j INITIAL NOT LEDs off except possibly sure that the instrument initia scary yor READY shows expected normal displays SVC 11 8 Remove Replace Power Switch WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT 1 Set the main power line switch to the off position RED O VISIBLE 2 Disconnect the power cable from its receptacle lt lt AN ae 3 Turn off all gas supplies 4 Remove the electronics carrier top cover by grasping it atthe rear and lifting upwards until its catch releases then pulling it toward the rear of the instrument 5 Remove the right side panel by remo
263. s previously removed NPD ACTIVE ELEMENT arini SVC 4 31 32 33 34 35 36 37 38 39 40 41 Guide the new bead power cable through the slot on the edge of the electronics carrier and down through the rectangular opening in the carrier top marked Detector A or B depending on which position is being used Orient the new plug in the same position as the one removed Install the interlocking side covers on the bead power and active element power control cables TO NPD TRANSFORMER TOP PART OF CONNECTOR Tea x TO NPD BEAD POWER CONTROL _ BOTTOM PART OF eee LOCKING TAB LOCKING TAB 5 NOTE ASSEMBLED 1 CONNECTORS The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When storing or in between handling of PCBs Printed Circuit Boards always place them in static control envelopes or enclosures Install the NPD detector PCB by aligning the PCB with the guide slots Press the board into its connector on the circuit board CAUTION NPD power control plugs installed in the wrong position will permanently damage the NPD detector PCB Insert the bead power cable and active element power control cable plug into its connector re ceptacle on the NPD detector PCB Tighten the inte
264. s procedure requires precautions against ESD Electro Static Discharge Usea grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument 6 Usea 7 mm nut driver to remove the screw securing the upper portion of the dual duct as sembly to the outer oven shell 7 Use a Pozidriv screwdriver to loosen but not remove the screw securing the lower portion of the dual duct assembly to the outer oven shell 8 Tilt the upper portion of the dual duct assembly out of the rear of the instrument while lifting it off of the loosened lower screw POWER SUPPLY TRANSFORMER AND BASE SVC 11 11 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 CAUTION When disconnecting a plug pull on the plug noton its wires Pulling on the wires may cause breakage Disconnect push on type connectors J 1 and J 2 from blade connectors P1 and P2 respective ly by grasping each one and pulling it straight off of its terminal Usea 7 mm nut driver to remove the nut securing the power cable ground lead to the AC power supply base Remove the power cable ground lead from the GRO stud on the AC power supply base INEC CONNECTOR Use a large pair of pliers to compress the black plastic strain relief which secures the power cable to the AC power supply b
265. sensor wiring 8 Remove any insulation from around the base ofthe inlet SVC 6 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 CAUTION Handle the heater and sensor cartridges with care to prevent breakage The cartridges particularly the smaller sensor cartridge are fragile Carefully slide the heater and sensor cartridges out of the heated block portion of the inlet Slide the replacement heater and sensor cartridges into the heated block ofthe inlet being in stalled Replace any insulation that was removed from around the base of the inlet Carefully install the inlet and insulation plate securing it to the instrument with two Pozidriv screws INSULATION PLATE Replace any insulation that was removed from around the inlet Remove the cap plug from the end ofthe inlet WELDMENT Install the liner and all other hardware removed during step 2 Restore the supply gas pressure HEATER SENSOR PS OPENINGS Install the injection port cover Install the right side panel and secure using two screws Install the electronics carrier top cover Slide the rear cover on to the instrument Secure the rear cover to the instrument by installing and tightening four screws Restore all gas supplies Restore power to the instrument SVC 6 10 Remove Replace Septum Purged Packed Column Inlet Heater and Sensor Cartridges PERFORM THE PROCEDURE FOR DISCONNECTING CONNE
266. sible dots and all LEDs turn on for a few seconds The next indication is when the unit displays TESTING MEMORY During this time the unit tests most of the processor memory ROM circuits Note that during this time only the NOT READY LED remains lit The third indication is when the unit displays TESTING SIGNAL PATH During this phase of the selftest the unit actually exercises most of the signal handling sections of the Main Board Note that the analog sensors i e temperature sensors are NOT tested at this time they are tested after the selftest How ever by linking the A D through the CPU to the D A and by looping the D A output back as an input to the A D most of the Main Board s signal handling circuits are checked The fourth and unless an error is found the final indication is the PASSED SELFTEST message This message verifies that the selftest sequence has been completed The PASSED SELFTEST display re mains until some further action is taken by the operator or some area not tested during the SelfTest is detected By pressing the clear key the visual display should change to some message about OVEN TEMP This action with its resulting message verifies that the keyboard is communicating with the CPU Calib and Test Clear Dot 7 HPIL Loopback Test This diagnostic test requires that one of the HPIL cables be connected from the OUT to the IN The test is then initiated from the keyboard by pressing By entering this test
267. sified by the number of ports they contain and their useful temperature range The valves with Teflon rotors may be used in the range 0 to 175 degrees C whereas the valves with polyimide rotors function bestin the range of 100 to 350 degrees C Because of the difference in the opera tion temperature ranges do not mix these two valve types in the same system HP offers only the 6 amp 10 port GSV s and the 4 port LSV 1 16 inch Teflon rotor valves 0 to 175 degrees C 1 16 inch polyimide rotor valves 100 to 350 degrees C Adjustable restrictor valves ambient to 225 degrees C Liquid Sample Valves see Liquid Sample Valves this section The HP 5890 Series Il was designed to accept valves heated in their own compartments because valves operate bestata constanttemperature Itis important to realize that when a valve is inside a gas chromato graph oven during a temperature programmed run the valve temperature can lag behind the programmed oven temperature by as much as 20 degrees C depending on the rate employed The mass of the pro grammed valve is responsible for this lag SVC 7 4 Ve 7 vH a S e Above is illustrated an actual 6 port valve viewed from the actuator side A functional two dimensional dia gram representing the same valve is shown Index Pin Rotor Groves OFF ON Adjustable Restrictors This restrictors are not designed for temperatures greater than 225 degrees C Gas Sample Loops A 0
268. stainless steel coupling 23 Remove the stainless steel coupling and heat shield disk from the detector weldment by remov ing four screws and lock washers SVC 4 72 24 25 26 27 28 29 30 31 32 Remove the jet weldment from the base of the weldment The jet weldment is not threaded it is pressed in NOTE Itmay be necessary to use a Suitable hex drive or other strong shaft like device to drive out the jet weldment by inserting the device through the exhaust coupler at the top of the weldment and striking it with a hammer Insert the eraser end ofa pencil or other suit able device through the jet opening at the base of the detector weldment and force the first heat shield window out of the detector weldment NOTE Due to the composition of the first heat shield gasket it may be difficult to remove the first heat shield window from the detector weldment If difficulties are encountered it may be necessary to use a Sharp implement to pry the first heat shield window out of the detector weldment This may cause chipping or breakage of the window in which case it must be replaced Also if chipping or breakage occurs use an inert gas to blow any fragments out of the detector weldment and clean the weldment with an approved solvent Remove the heat shield gasket from the detector weldment Clean the detector weldment with an approved solvent Blow out any particles or contaminants us
269. stall the flow module in the instrument a K Connect the plumbing removed in step 8 FLOW MODULE BRACKET TYPICAL Restore all gas supplies Leak check all installed fittings If the system is leak free install the left side panel and secure using two screws Restore power to the instrument SVC 3 6 Remove Replace Split Splitless Capillary Inlet Solenoid Valve WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN RED O VISIBLE THE INSTRUMENT WHEN THE POWER CORD Iu Pe IS CONNECTED AVOID A POTENTIALLY JE DANGEROUS SHOCK HAZARD BY CR 0 DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT FLAME IONIZATION FID AND NITROGEN PHOSPHOROUS NPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS Set the main power line switch to the off position Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool gt WwW N FF When the heated zones are cool turn off all gas supplies 5 Remove the two screws securing the left side panel along its bottom edge 6 Slide the leftside panel towards the rear of the instrument and lift 7 Remove the four screws securing the rear cover to the instrument 8 Slide the rear cover towards the rear of the instru ment 9 Remove the electronics carrier top cover above the signal cable plugs and receptacles to expose the top edge of the TCD detect
270. ted fittings Turn off the supply gas Remove the cap plug from the end ofthe inlet Install the column and associated hardware removed in step 2 Install the right side panel and secure using two screws Install the electronics carrier top cover Slide the rear cover on to the instrument Secure the rear cover to the instrument by installing and tightening four screws Install the injection port cover Restore power to the HP 5890 Series Il SVC 6 15 Remove Replace PCOC Inlet Heater and Sensor Cartridges WARNING PERFORM THE PROCEDURE FOR DISCONNECTING CONNECTING HEATER AND TEMPERATURE SENSOR WIRING ON MAIN PCB BEFORE PERFORMING THIS PROCEDURE INJECTION PORT COVER Allow time for the oven and heated zones to cool At the bottom of the inlet inside the column oven remove the column and hardware asso ciated with the inlet s liner column liner nuts ferrules makeup gas adapter etc Remove the injection port cover by grasping its FREE back edge and lifting it upward s COVER Remove the two screws securing the left side EIDSHAFT panel along its bottom edge lt Cap the base ofthe inlet inside the column a oven ng ii 1 4 INCH Remove the auto injection assembly or op re tional manual injection assembly by rotating it WASHER counter clockwise Be careful not to loose the septum insert or PCOC insert spring which are installed under the injection assembly AUTO INJ ECTION ASSEMBLY O
271. the height of the previous peak with the first tallest peak having a height value of about 125 mV at 0 1V analog output halfheight width of this peak is about 0 13 minutes Each cycle is about 1 5 min utes in length The chromatogram will continue to cycle until the STOP key is pressed The test chroma togram is useful as a troubleshooting aid in deciding whether a lost or noisy signal observed ata con nected integrating or chart recording device is due to a chromatographic problem lost sample due to leaks noise due to a dirty detector etc versus problems either with the integrating recording device itself or in its connecting cables If the test chromatogram does not exhibit any problems at the integrating recording device a chromato graphic problem is likely to exist if the test chromatogram exhibits noise or does not appear atall the problem is most likely to be hardware related Check setpoints on both the HP 5890 SERIES II and the integrating recording device SVC 1 10 PARTD FUNCTIONAL SYMPTOMS This section contains symptoms other than those that appear on the visual display that indicate a pos sible problem Typically these types of symptoms can be associated with a specific functional area of the instrument Zone doesn t heat all other zones O K With an Ohm meter measure the resistance of the cartridge heater should be about 200 220 ohms With the power removed this can be measured by removing the J 9 co
272. the exposed end of the flange adapter down to prevent loss of the second heat shield win dow and associated o rings and remove it the heat shield window o rings and the flange ring from the detector 14 Remove the four screws and associated lock washers securing the stainless steel coupling clamp heat shield disk first heat shield window and heat shield gasket to the detector weld ment 15 Tip the exposed end of the stainless steel coupling down to preventloss of the heat shield disk first heat shield window and heat shield gasket and remove it the heat shield disk first heat shield window and heat shield gasket from the detector weldment SVC 4 67 16 17 18 19 20 lt _ lt HEAT SHIELD GASKET 19256 80040 sQ Qo lt _ FIRST HEAT SHIELD WINDOW lt HEAT SHIELD DISK COUPLING O RING 0905 1104 Aa SECOND HEAT SHIELD WINDOW Se 5 9 p O RING 0905 0955 xk FLANGE ADAPTOR a FLANGE RING SCREW K a RING 0905 1103 CLAMp LOCK WASHER VT SCREW NOTE Due to the composition of the first heat shield gasket it may be difficult to remove the first heat shield window from the detector weldment If difficulties are encountered it may be necessary to use a Sharp implement to pry the first heat shield window out of the detector weldment This may cause chipping or breakage of the window in which case it must be replaced Also if chipping or breakage occurs use an i
273. the ignitor wire lead connector at the mating connection adjacent to the ignitor Slide the rear cover on to the instrument Secure the rear cover to the instrument by installing and tightening four screws Install the right side panel and secure using four screws Install the electronics carrier top cover DETECTOR PCB INTERCONNECT COLLECTOR NUT COLLECTOR CO SPANNER 7 COLLECTOR MOUNT THERMAL CLAMPS STRAP Install the hinged top cover and secure using a screw and washer Connect the ground strap to the hinged top cover using a screw Restore all gas supplies Restore power to the instrument SVC 6 23 Remove Replace NPD Heater and Sensor Cartridges WARHIHG PERFORM THE PROCEDURE FOR DISCONNECTING CONNECTING HEATER AND TEMPERATURE SENSOR WIRING ON MAIN PCB BEFORE PERFORMING THIS PROCEDURE NITROGEN PHOSPHOROUS NPD DETECTORS USE HYDROGEN GAS AS FUEL BE SURE ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS Allow time for the oven and heated zones to cool At the bottom of the detector inside the column ao sS oven remove the column and hardware asso ciated with the detector s liner column liner a 9 nuts ferrules makeup gas adapter etc 89 A a g NOTE g 8 4 g 0 If an autosampler is installed the injection ro port cover will not be present Remove the injection port cover by grasping its back edge and lifting it upward INJ ECTION PO
274. the injection syringe to admit sample directly into the capillary column 320 200 100 micron id This is accomplished by the use of an insert which serves to align the syringe with the capillary column and make a seal with both the column and the syringe needle Maximum sample volumes are smaller compared with other inlets typically in the range of 0 5 microlitre to 2 0 microlitre The ideal volume depends on the column id the compatibility of the sample solvent and the stationary phyase sample concentration stationary phase film thickness and column flow rate Usually the smaller the sample the better providing that sensitivity requirements are met The Programmable Cool On Column injection port operates by forward pressure control of the inlet and the inclusion of a preset foward pressure contolled septum purge vent carries septum bleed out to vent A typical example of pressure setting and associated flows would be 50psi for the carrier with a setting of 10 to 20psi in the injection port This will also yeild a 10 to 20 ml min septum purge vent flow Expected ranges of operation follow Temperature Control Range Ambient 4 Degrees C to 450 Degrees C Temperature Programming 0 to 100 Degrees c minute Typical Cooling Rate oven fan only Standard 10 5 mins CO2 Cryo Blast 7 5 mins LN2 Cryo Blast 4 5 mins Oven Track Mode Standard Injection prot temperature is adjusted real time to lead oven temperature program by 3 Degrees C Pressu
275. the type of diagram that will be used throughout this section The 6 port and 10 port valves and the LSVs function in the same basic manner but with different port locations and rotor grooves Some other symbols used in the plumbing configuration diagrams are shown in Figure 2 7 Adjustable Restrictor This restrictor is not designed for temperatures greater than 175 degrees C for this reason this adjust able restrictor is NOT compatible with high temperature valves Gas Sample Loops A 1 0cc sample loop is included with all valve systems configured for gas sampling 10 0cc and 5 0cc loops occupy one valve position limiting the number of valves that can be housed in a valve compart ment Six port General Purpose Configurations Liquid sampling valves are designed for use with liquefied gases under pressure such as ethane pro pane butane LNG etc They are not intended for use with nonvolatile liquids at room conditions where a concealed leak may allow an accumulation or pool of liquid to form that may present a signifi cant fire hazard WARKING TO REDUCE THE POSSIBILITY OF FIRE HAZARD WHEN SAMPLING FLAMMABLE GASES OR LIQUID UNDER PRESSURE THE OPERATOR SHOULD ROUTINELY MAKE A CAREFUL PRESSURE LEAK TEST OF THE PLUMBING FITTING AND VALVES COMPRISING THE SAMPLING SYSTEM IN OPERATION BOTH VALVE POSITIONS SHOULD BE CHECKED THEREFORE DEPENDING UPON THE NATURE AND PRESSURE OF THE SAMPLING STREAM PERIODIC PRESSURE LEAK TEST A
276. ther fuse is bad re place If neither fuse is bad go to probable cause b 1 2 With instrument power off check resistance of oven heater If it exhibits a dead or near short replace the oven heater element If heater elementis ok re fer to probable cause c Replace power supply PCB If problem persists reinstall original power supply PCB and go to probable cause heck both fuses Calibrate oven per proce dure in this section Replace main PCB Ensure that the oven heat er is notcoming in contact with the oven shell or other nearby components If problem persists go to probable cause b Replace main PCB Replace Oven Shroud Assembly WARNING HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNECTED AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT Set the main power line switch to the off position RED O VISIBLE lt I Disconnect the power cable from its receptacle Allow time for the oven and heated zones to cool BRC OOF MB When the heated zones are cool turn off all gas supplies 5 Remove the electronics carrier top cover by grasping it atthe rear and lifting upwards until its catch releases then pulling it towards the rear of the instrument 6 Remove the right side panel by removing four screws two each along its upper and lower edges 7 Remove the two screws securing the left s
277. to remove the top cover and lid shaftas a unit NW lt LID SHAFT is 1 4 INCH Iw SCREW WR AND WASHER NN SO SVC 6 20 9 10 11 12 13 14 15 16 17 18 19 20 Disconnect the ignitor wire lead connector at DETECTOR PCB the mating connection adjacent to the ignitor INTERCONNECT a anf a THERMAL CLAMPS STRAP NUT Loosen the screws securing the clamps holding COLLECTOR the interconnect in place SPANNER COLLECTOR MOUNT CAUTION The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When handling PCBs Printed Circuit Boards always place them in static control envelopes Remove the FID detector PCB by sliding it out of the main PCB at the right side of the instru ment Removal of the PCB will withdraw the interconnect from the thermal strap Use caution to avoid damaging the spring at the end of the interconnect Remove the three screws securing the collector mount to the thermal strap Remove the collector mount and collector assembly as a unit Usea land 1 4 inch socket to remove the base spanner nut from the detector weldment z PASE SPANNER NUT THERMAL STRAP Remove the thermal strap by removing the five screws securing
278. trap by carefully working it over the collector lead and exhaust vent tube Depending on the detec tor s location it may be necessary to bend the shield to remove and install it Avoid excessive bending as this will fatigue the metal shield shortening its life Remove the thermal strap working it carefully over the collector lead and exhaust vent tube Remove the insulation around the detector base to expose the two Pozidriv screws which secure the ECD weldment to the heated block Cap the base of the detector inside the column oven to avoid damage or contamination of the detector Remove the two Pozidriv screws securing the detector weldment to the heated block Remove the weldment from the heated block NOTE Perform steps 27 through 32 only if it is desired to remove the ECD heated block Otherwise proceed to step 33 If required remove the two Pozidriv screws se curing the heated block to the instrument Lift the heated block out of its mounting position ECD DETECTOR WELDMENT Carefully slide the two cartridges heater sensor out of the block The smaller of the two car tridges is the sensor and must be handled gently in order to prevent breakage Remove the heated block Slide heater and sensor cartridges into the new block Install the new heated block in its mounting position Secure the heated block to the instrument using two screws Mount the new weldment making sure its exhaust vent tube
279. trouble shoot the proportional control valve pressure transducer and the inlet in the case of the EPC Trouble shoot the forward pressure regulator and gage in the case of the MPC The FAULT message indicates that a major subsystem of the HP 5890 SERIES II is not functioning properly Although the operation of the suspected subsystem is suspended until the problem is cor rected the balance of the GC is operational Note that the instrument can never reach a fully READY state when a FAULT condition exists FAULT ADC OFFSET indicates a problem with the thermal ADC offset reading Replace the Main Board FAULT LINE SENSE indicates a problem either with the actual line voltage or with the sensing circuit Measure the line voltage and if the measurement is between 5 and 10 of the instruments stated rating then the line voltage is O K Determine if the 120 VAC secondary exists and if its fuse F3 is open If both F3 and the 120 VAC secondary are good then their is a failure in the line sense circuit and the main board should be replaced FAULT OVEN gt MAX 20 indicates that the oven senses its temperature has exceeded the current setpoint value by more than 20 degrees C This message as any FAULT message regarding a tem perature problem shuts down all of the temperature systems The problem could be either in the oven sensing or in the oven control circuits List the oven temperature if the display indicates that the actual valve is above
280. ts mounting bracket SCREW MOUNTING BRACKET NUT NOZZLE TYPICAL WASHER Withdraw the valve assembly from the side of the instrument being careful not to bend or dam age the nozzle assembly 18 Separate the valve body from its mounting bracket by removing two screws 19 If only the cryogenic nozzle is being replaced proceed as follows a Remove the nozzle notice its position with respect to the valve assembly from the valve body and discard b Wrap the threads of the new nozzle with Teflon pipe tape being careful not to cover the first two threads of the nozzle SVC 5 24 c Mountthe cryogenic nozzle on the valve and tighten it firmly with a wrench Be sure to install a CO nozzle if one was present in the same position as the old one d Go to step 22 20 Ifa PCOC cryogenic nozzle is installed proceed as follows INJECTION PORT COVER a Remove the injection port cover by grasping its back edge and lifting it upward b Remove the auto injection assembly or optional manual injection assembly PRESS by rotating it counter clockwise Be l eee TO careful not to loose the septum 6 COVER insert or PCOC insert spring which LID SHAFT are installed under the injection assembly a 1 4 INCH SCREW AND WASHER AUTO M INJECTION ASSEMBLY pe OPTIONAL O MANUAL k INJECTION ASSEMBLY ES SEPTUM DUCKBILL T lt amp septum INSERT fe pcoc INSERT SPRING
281. ttings to the valve Turn the fluid supply on Verify no leakage occurs at the fitting to the valve body If there is no evidence of leakage replace the panels removed at the beginning of this proce dure Connect any gas supplies disconnected in step 4 of this procedure Restore power to the instrument Check that the oven controls properly at some selected subambient temperature e g 10_C and that no cryogenic fluid flows into the oven ata selected temperature above ambient e g 100 C SVC 5 28 Calibrate Oven Temperature To maximize the precision of retention time information particularly if retention times are to be com pared to that of other chromatographs it may be necessary to calibrate the oven temperature control circuitry using an independent temperature measuring device With the factory set calibration difference value of 0 zero the displayed oven temperature is accurate to within 1 of the actual temperature which is expressed in_K Kelvin The HP 5890 Series II provides the means to reset oven temperature monitoring if necessary so that the ACTUAL displayed temperature value accurately represents the correct temperature Calibration of the oven temperature control circuitry requires the operator to enter the difference delta value in _C between an independently measured temperature and the corresponding displayed oven temperature For example if the actual measured oven temperature is 148 73 _C
282. tubing attached to the detector FAN A weldment Ss Trace the tube from the FPD base detector weldment to the connection point at the left side of the instrument ARROW Disconnect the M8 fitting securing the tube at its connection site The fitting should only be finger tight If more force is required to free it use a small pair of pliers while holding the applicable connector site with an appropriate tool Locate the U shaped slots on the instrument to the left of the inlet Bend the tube from the new weldment to lay within these slots and any installed clips and route it to its associated at tachment point on the left side of the instru ment CAUTION When installing tubing in the applicable flow control component ensure that all o rings are positioned properly Connect the tube from the new detector base weldment to the flow manifold block The hy drogen tube fitting is painted RED Make sure that the tube is installed at the correct location on the flow manifold block If the PCOC fan and cover were removed in stall them and secure using two screws Install the new detector base weldment and secure using two screws NOTE It is advisable to install a new fused silica liner while the detector is this state of disassembly The following step is only applicable when installing a new liner Install a new liner and ferrule by feeding the liner through the o ring at the top of the transfer tub
283. ture valve may be marked with P High Temperature polyimide rotors may be used from 100 to 350 degrees C This high temperature valve may be marked with PT or just T The rotor seat of the valve body is a highly polished conical surface This finish precludes adsorption of most GC samples Additionally the polished surface with a properly seated rotor will prevent leakage around the rotor and between nonselected ports amp 2 The rotor assembly is an integral molded and machined conical hub necessary for proper seating The sample will contact either Teflon low temperature or polyimide high temperature as well as the stainless steel of the valve The rotor fits precisely into the body and nests in the conical seat Itis held in place by a preload assembly The grooves in the rotor determine the paths between specific ports The index pin prevents rotation be yond either stop of the index lip Valve ports are connected by the grooves only when the index pin is close to or againsteither stop of the index lip Any intermediate position results in shutoff of flow through the valve SVC 7 3 Feeler Gauge 0 010 inch 0 25 mm Customer Supplied Valve R otor Index Pin Clockwise B Counterclockwise amp a amp ee Stop Valve Stop a Le amp ae General Purpose Valves GPVs The standard general purpose valves have 1 16 inch zero dead volume fittings and their internal portdiame ter is 0 016 inch They may be clas
284. ully install the inlet and insulation plate securing it to the instrument with two Pozidriv screws Replace any insulation that was removed from around the inlet Bend the tube running from the installed inlet to the inlet flow control components so that it lays within the U shaped channels to the left of the inlet SVC 2 3 21 22 23 24 25 25 26 27 28 29 30 31 Connect the Carrier Gas Inlet disconnected in step 9 Install the liner and all other hardware except the column removed during step 5 Restore the supply gas pressure Check for leaks at all of the newly mated fittings Ensure that the septum is properly installed and in good condition Turn off the supply gas UM NUT MBLY Remove the cap plug from the end of the inlet gt TUM Install the column and associated hardware removed in step 5 Restore the supply gas pressure 2 A Install the left side panel and secure using two screws De a WELDMENT Install the injection port cover K Restore power to the HP 5890 Series Il SRy SVC 2 4 SEPTUM PURGED PACKED COLUMN INLET Remove Replace Septum Purged Packed Column Inlet WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD RED O VISIBLE IS CONNECTED AVOID A POTENTIALLY puu DANGEROUS SHOCK HAZARD BY lt DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT Set the main power line switch to the off position Disco
285. ully slide the proportional control valve out of the EPC flow control bracket to provide ac cess to the screw securing the bracket to the A E instrument flow carrier VENT PROPORTIONAL Z CONTROL VALVE SVC 3 11 SEPTUM PURGE REGULATOR 13 14 15 16 17 18 19 20 21 Remove the nut securing the PCOC purge regulator to the EPC flow bracket Remove the screw securing the EPC flow control bracket to the instrument flow carrier which was previously obscured by the proportional control valve Carefully remove the EPC flow control bracket and all components attached to it from the side of the instrument Use caution notto damage the tubing running to the inlet Remove the two screws securing the box ended portion of the valve transducer braze mentto the EPC sensor PCB Remove the proportional control valve and valve transducer braze ment from the EPC flow control bracket EPC FLOW BRACKET EPC es SENSOR re PCB Remove the EPC cable from the EPC sensor E ye a PCB and the connector receptacle on the pro ae portional control valve a A Ifthe EPC sensor PCB is to be eae replaced remove it by removing the two nuts securing it to the EPC flow A control bracket PROPORTIONAL CONTROL VALVE NOTE Steps 20 through xx refer to disassembly of the various components attached to the proportional control valve Skip to step xx if you wish to skip this Rem
286. ument to the left of the inlet Bend the tubes from the new detector weldment to lay within these slots and any installed clips and route them to the flow manifold block on the left side of the instru ment WARKING CONNECTING THE HYDROGEN INLET TUBE AT THE WRONG LOCATION ON THE FLOW MANIFOLD BLOCK WILL RESULT IN LEAKAGE CREATING A FIRE AND EXPLOSION HAZARD A 4 ONS When installing tubing in the flow manifold ei eL E block ensure that all o rings are positioned 0 4 properly TUBE OUTLET Qo 42 Connect the tubes from the new detector weld FITTING PLATE ment to the flow manifold block The hydrogen Sr tube fitting is painted RED Make sure each tube is installed at the correct location on the flow manifold block SCREW 3e lt 43 Ifthe PCOC fan and cover were removed in FAN ff stall them and secure using two screws SHROUD Gms COOLING J dae FLOW 44 Install the thermal strap and secure it to the in FAN DIRECTION ARROW strument using five screws ETECTOR COVER COLLECTOR i ye A INTERCONNECT CLAMP SCREW 45 46 47 48 49 50 51 WARHIHG CONNECTING THE HYDROGEN INLET TUBE AT THE WRONG LOCATION ON THE FLOW MANIFOLD BLOCK WILL RESULT IN LEAKAGE CREATING A FIRE AND EXPLOSION HAZARD The following steps require protection against ESD Electro Static Discharge Use a grounded wriststrap part no 9300 0969 large or9300 0970 small conn
287. unting holes with those of the detector weldment Secure the detector weldment and insulation plate to the instrument with two screws Install the thermal strap and secure it to the Pg SPANNER NUT instrument using five screws THERMAL STRAP Remove the cap from the detector weldment top opening INSULATION Ensure that there is no debris in the detector weldment Install the base spanner nuton the detector lt weldment and tighten using a spanner wrench partno 19301 00150 i CAUTI The following steps require protection against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument When handling PCBs Printed Circuit Boards always place them in static control envelopes Install the NPD detector PCB by sliding it into its mounting location on the main PCB at the right side of the instrument Installation of the PCB will insert the interconnect into the thermal strap Use caution to avoid damaging the Spring at the end of the interconnect Tighten the screws on the clamps which secure the interconnect to the thermal strap SVC 6 26 32 33 34 36 37 38 39 40 41 42 43 NOTE In the next step avoid touching the lower end of the collector end nearest the jet Fingerprints and or other contamination may
288. utusing a 7 mm nut driver Tighten the lower mounting screw using a Pozidriv screwdriver Slide the rear cover on to the instrument Secure the rear cover to the instrument by in stalling and tightening four screws Restore all gas sup plies Restore power to the instrument Observe the alphanu meric display as the in strument performs an internal self diagnostic integrity check to en sure that the instrument shows the expected normal displays NORMAL INTEGRITY CHECK AT POWER ON Test of display elements all alphanumeric and LED ears elements are lit FINAL TIME RUN NOT INITIAL TIME keany ACTUAL SETPOINT ITIEIS TII INIG IMIEIMIOIR YI OVEN STATUS run RAT INITIAL NOT TIME READY 5890 Series II memory test in progress ACTUAL SETPOINT 5890A Self testing in progress TIEISITII INIG STIPGINJATL PIAITIH LEDs off except possibly OVEN STATUS NOT READY a a SEH RAT NOT INITIAL TIME READY ACTUAL SETPOINT PPHAISISTE D IS EICIF IT EISIT Message indicating normal termination of diagnostic tests after power restoration OVEN STATUS User setpoints remain in goo TIME RUN force INITIAL NOT LEDs off except possibly TIME keny NOT READY SVC 11 4 Remove Replace Power Supply Transformer WARHIHG HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER CORD IS CONNE
289. val of the PCB will withdraw the interconnect from the thermal strap Use caution to avoid damaging the spring at the end of the interconnect 20 Remove the three screws securing the collector mount to the thermal strap 21 Remove the collector mount and collector assembly as a unit 22 Use a 1 4 inch nut driver to remove the jet from the detector weldment 23 Use al and 1 4 inch socket to remove the base spanner nut from the detector weldment BASE SPANNER NUT m E So Q 24 Remove the thermal strap by removing the five screws securing it to the instrument MAL STRAP 25 Remove the two screws securing the detector INSULATION PLATE weldment to the instrument 26 Slide the insulation plate out from over the de tector weldment 27 If the detector is to be reused cap the detector weldment at its upper opening using a detec tor cap and at its lower opening inside the col umn oven IR 28 Remove the insulation around the detector weldment to expose the two screws securing the weldment to the instrument SVC 4 23 29 30 31 32 33 34 35 36 Lift the base up enough to expose the heated block heater and sensor cartridge wires Carefully slide the two cartridges out of the block The smaller of the two cartridges is the FAN sensor and must be handled gently in order to SHROUD prevent breakage COOLING FLOW Ifa PCOC fan is installed remove the back cov FAN PEE TION
290. ving four screws two each along its top and bottom edges T ELECTRONICS go CARRIER TOP p COVER SCREWS RIGHT SIDE PANEL CAUTION This procedure requires precautions against ESD Electro Static Discharge Use a grounded wrist strap part no 9300 0969 large or 9300 0970 small connected to a suitable ground Failure to heed this caution may result in damage to the instrument 6 Atthe right side of the instrument below the main PCB remove the power switch from its Slot by prying the plastic locking tabs on each side of the switch in toward the switch body PRESS HERE PULL OUT OF INSTRUMENT D SVC 11 9 10 11 12 13 14 CAUTION When disconnecting a plug pull on the plug noton its wires Pulling on the wires may cause breakage Remove the four push on type connectors from the rear of the switch GREY Connect wiring to power switch as shown in illustration Install the power switch in its mounting slot be low the main PCB Install the right side panel and secure using two screws WHITE Install the electronics carrier top cover BLACK BLACK YELLOW NORMAL INTEGRITY CHECK Restore all gas sup plies AT POWER ON ACTUAL SETPOINT EAGEN a STATUS run NOT READY Restore power to the instrument OVEN RAT INITIAL TIME ACTUAL SETPOINT ITIEIS TII INIG IMIEIMIOIR YI S
291. w rate through Channel A and the current GAIN calibration value for Channel A Setting the ZERO Calibration Value The ZERO calibration value M U ST be set with NO gas flow through the channel being calibrated 1 Press zero y FLOW A ZERO is displayed followed by a value the current ZERO calibration value for EFS Channel A Note that Channel A is assumed by default if channel B is to be cali brated instead pressC2_ SVC 3 22 DISCONNECT the gas source to the particular flow channel being calibrated DO NOT trustan on off valve pressure regulator or mass flow controller to be an effective shutoff device ANY gas flowing through the EFS will invalidate the ZERO calibration value Disconnect the source at any convenient point e g at the connection of the supply line into the instrument Locate the EFS module and note its labelling CHANNEL A CHANNEL B IN OUT For the chan nel being calibrated locate and disconnect its OUT fitting use two wrenches in opposition to prevent twisting the tubes Install the EFS flow measuring adapter Part No 05890 80620 into the female OUT fitting to the EFS module Connecta bubble flow meter to the adapter Allow ample time up to 1 2 hour for residual gas within connected plumbing to bleed off Verify that absolutely NO flow is observed at the connected bubble flow meter Assuming there is no gas flow through the channel being calibrated pres ENtER atthe key board This updates the
292. while the correspond ing displayed temperature is 150 00_C the delta value is 1 27 Correction Value Measured Temperature _C Displayed Temperature _C Setting the Oven Calibration Value Oven temperature calibration measurements should be made at a temperature in the mid range of those temperatures normally attained during operation Allow ample time up to 1 2 hour for thermal equilibration at the selected temperature No drift should be observed 1 Place the temperature sensing probe in the region of the oven which is occupied by the column s 2 Setthe oven temperature to the desired level allowing ample time for thermal equilibration 3 Atthe keyboard select the CALIB AND TEST MODE function 1 EDD oD 4 CALIB will be displayed followed by two values the observed oven temperature to 0 01 C and the current delta correction value Record the current delta correction value If problems occur during recalibration the value may be re entered 5 Assuming no drifthas occurred the new delta correction value may be entered using the nu meric keypad followed by pressing CENTER 6 CALIB DELTA will be displayed until ENTER is pressed again Then the oven temperature cali bration occurs Note that after oven calibration the displayed oven temperature value should closely match the value of the installed temperature measuring device NOTE Any delta correction value may be entered within a range of 10 00 C If
293. y in the position where a command instructs it to switch no action will occur The designated channels A or B are determined solely by the wiring connections to the valve box SVC 7 17 Valve Configuration Diagrams Legend Adjustable Restrictors can be manually set to adjust its pressure drop e g to balance flow Arrows indicate the direct ion of flow Loops have a spe cified volume 5 cannot be adjusted gt Fixed restrictors amg L Jumper volume is Fit not specified ting SVC 7 18 Custom Plumbing Diagram Required Option 200 or 230 Column or 2nd Valve Sample Gas Sampling Option Option 201 or 231 Column 2 Column 1 Detector or Valve Adj Restr OFF Column Isolation Option 202 or 232 Temperature limited to 235 C by micrometering needle valve SVC 7 19 Sample In Stream 2 In Two Stream Selection Requires Gas Sampling Option 203 or 233 Column Backflush to Detector Option 204 or 234 Precolumn Ist Carrier 2nd Carrier Detector Backflush a Precolumn to Vent Option 205 or 235 SVC 7 20 Column 1 from Flow Controller Inj Port or GSV Column Selection Unused Column Isolated Option 206 or 236 Column 1 Detector Sequence Reverse Option 207 or 237 Column 1 Sequence Reverse with Backflush of Column 1 Option 208 or 238 SVC 7 21 Custom Plumbing Diagram Required Option 400 or 430 Column

HP 5890 Series II GC Service Manual (05890

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