Teledyne API Model 751 Zero Air Generator
Contents
1. Revision Description Checked Date DCN A Production Release RH 10 6 2013 6768 CONNECTION FROM CONNECTION TO Cable Part Signal Assembly PN J P Pin Assembly PN J P Pin 077940100 Cbl Assy Front Panel LED Indicator 751X PWR RED LED Front Panel LED Board 077890000 Ji 1 Control Board 077830000 11 1 PWR GREEN LED Front Panel LED Board 077890000 Ji 2 Control Board 077830000 11 2 RH RED LED Front Panel LED Board 077890000 J1 7 Control Board 077830000 J11 3 GND Front Panel LED Board 077890000 J1 4 Control Board 077830000 11 4 GND Front Panel LED Board 077890000 Ji 3 Control Board 077830000 11 5 RH GREEN LED Front Panel LED Board 077890000 J1 6 Control Board 077830000 11 6 078580200 Assy Water Drop Valve 751 12V RET Water Drop Valve 078580000 P16 1 Control Board 077830000 J16 1 12V Water Drop Valve 078580000 P16 2 Control Board 077830000 J16 2 078610000 Assy 12VDC Fan T701X 751X 12V RET 12VDC Fan 078610000 P7 1 Control Board 077830000 J7 1 12V 12VDC Fan 078610000 P7 2 Control Board 077830000 J7 2 078650000 Assy Pump 115V 751 AC Line Assy Pump 115V 077990000 L_ Control Board 077830000 J8 1 AC Neutral Assy Pump 115V 077990000 N_ Control Board 077830000 J8 2 Power Gnd Assy Pump 115V 077990000 G Control Board 077830000 J8 3 078650100 Assy Pump 230V 751 AC Line Assy Pump 230V 077990100 L1 Control Board 072. 0 cer cere 3 4 Si 3 5 3 8 SILICA GEL KITS OPT 4A2ZB amp C teen eege tele tle teh 3 5 3 9 FLOW RESTRICTOR OPT 72B 1 11 3 3 5 A OPERATION WEE 4 1 4 T e E TEE 4 1 42 05 OCICS TT TT 4 4 4 2 2 OMITE SON E 4 4 4 2 3 A ore iE R E ET EEE E URN 4 5 424 Pressure FOOL Ee 4 5 4 25 4 O 4 5 4 2 6 Water 2 di 13 3 3 30 4 5 4 2 7 Pressure e UE 4 5 426 1 diede 4 6 429 ee 4 6 4 2 10 e el 4 6 4 2 11 Optional Carbon Monoxide CO Zcrubber 4 6 42T2 PUPAL 2 cd ce 4 6 219 E 4 6 4 2 14 ICONO EE 4 7 4 2 15 Front Panel Indicator Lights 4 8 07836C DCN7021 vii 4 2 16 Dewpoint Sensor sitas is alate alal aes 4 8 5 MAINTENANCE geed A ia a Aa 5 1 DA SCHEDULE EE 5 1 562 CLEEANING 263255 P E E AE E E E E 11111 0 0 5 2 5 3 CHECKING THE TUBING 0 5 2 5 4 REPLACING THE CHARCOAL SCRUBBER Mea 5 3 5 5 REPLACING THE NO NO SCRUBBER MEDIA 2 5 4 5 6 REPLACING THE OPTIONAL CO SCRUBBER ii 5 4 5 7 REPLACING T
3. CO Scrubber Charcoal Scrubber Purafil Scrubber 3 Pressure 4 Gauge 0 Optional Equipment Figure 4 1 Pneumatic Diagram 4 2 07836C DCN7021 Teledyne API Model 751 Zero Air Generator Operation Drain Fitting Cover Panel Fan Intake located beneath cover panel Intake Filter Charcoal Scrubber NO NO Scrubber CO Silica Gel Outlet Scrubber Canister Filter Option located beneath silica canister Figure 4 2 Instrument Plan View Instrument Panel 07836C DCN7021 4 3 Operation Teledyne API Model 751 Zero Air Generator Figure 4 3 Instrument Panel 4 2 Components This section describes the main components of the 751 4 2 1 Intake Filter The intake filter is a serviceable assembly that houses a disposable paper filter element Section 5 provides maintenance instructions 4 2 2 Compressor The compressor is a single cylinder oscillating piston type driven by a split capacitor AC motor The compressor is dry that is there are no lubricants which can contaminate the compressed air The pistons are sealed by flexible TFE piston rings and after a short run in period to seat the rings should last for years There are no diaphragms The compressor is mounted on a sub plate which is supported on four tuned vibration isolators 4 4 07836C DCN7021
4. CAUTION ENSURE THAT THE POWER CORD IS PROPERLY GROUNDED AND ADEQUATELY RATED FOR THE SPECIFIED POWER RATING OF THIS INSTRUMENT SEE SPECIFICATIONS TABLE 3 4 2 Pneumatics Make the following pneumatic connections DRAIN 1 4 push to connect bulkhead union Connect 1 4 diameter tubing to the Drain Fitting refer to Figure 3 1 to avoid the occasional spurts of water ejecting from the fitting Ensure the tubing is long enough that the water ejects outside the instrument ZERO AIR OUT 1 4 swage type bulkhead union Connect the ZERO AIR OUT port of the 751 to the INLET fitting of the Model 700 Calibrator with clean 1 4 TFE tubing Keep this line as short as possible to minimize pressure drops The pressure in this line is adjustable but should normally be 30 5 psig 07836C DCN7021 3 3 Getting Started Teledyne API Model 751 Zero Air Generator 3 5 Power Up Do not block the cooling fan located beneath the cover panel Always keep lid NOTE open when instrument is running eee Turn on the instrument panel POWER SWITCH Figure 3 1 The instrument panel POWER LED should light The cooling fan should start immediately The compressor should start after a few seconds delay The delay is to allow the control board to measure the local line frequency After 30 to 60 seconds the instrument panel pressure gauge should read 30 psig When the DEW POINT LED is lit green it indic
5. 15 Reattach the canister with the fastening strap 16 Reconnect the upper 1 4 tube 17 After the compressor is turned on it may be wise to check the scrubber for leaks using a commercial soap solution leak finder 07836C DCN7021 5 3 MAINTENANCE Teledyne API Model 751 Zero Air Generator 5 5 Replacing the NO NO Scrubber Media This procedure is identical to the charcoal scrubber replacement procedure except that the canister should be refilled with Purafil NOTE After replacing the material in these scrubbers it can take up to 48 hours for the material to dry out before the 751 is functioning optimally 5 6 Replacing The Optional CO Scrubber The CO scrubber is attached to a bracket between the NO NO scrubber and the silica gel canister This is not a heated scrubber It is secured with four screws through the body of the scrubber into the bracket 1 Turn off power and unplug the 751 2 Remove the four screws to remove the scrubber CAUTION THE SCRUBBER MAY BE HOT 3 With a 9 16 wrench remove the two unions from the top of the scrubber cartridge 4 Pick out the retaining screens 5 Shake out the catalyst beads and dispose No special disposal methods required 6 Pour in new catalyst to 1 2 from the top of the bores Tap the cartridge sides gently to settle the beads and top up to the 1 2 level 7 Return the retainer screens 8 Replace the TFE tape on the two unions and
6. 178 x 470 x 356 mm Power Typical Power Consumption 110 120 V 60 Hz 4 0 A 105W 220 240 V 50 Hz 3 0 A 130W Environmental Conditions Installation Category Over Voltage Category II Pollution Degree 2 Intended for Indoor Use Only at Altitudes lt 2000m Mains Supply Voltage Fluctuations not to exceed 10 of the nominal voltage Transient Over Voltages according to Over Voltage Category II 07836C DCN7021 2 1 Specifications and Approvals Teledyne API Model 751 Zero Air Generator 2 2 Approvals and Certifications The Teledyne API Model 751 Zero Air Generator was designed tested and certified for Safety and Electromagnetic Compatibility EMC This section presents the compliance statements for those requirements and directives For additional certifications please contract Technical Support at 1 800 324 5190 or sda_techsupport teledyne com 2 2 1 Safety IEC EN 61010 1 2010 gu Edition Safety requirements for electrical equipment for measurement control and laboratory use CE 2006 95 EC Low Voltage Directive 2 2 2 EMC IEC EN 61326 1 Class A Emissions Industrial Immunity EN55011 CISPR 11 Group 1 Class A Emissions FCC 47 CFR Part 15B Class A Emissions CE 2004 108 EC Electromagnetic Compatibility Directive 2 2 07836C DCN7021 3 GETTING STARTED This section provides instructions on the proper installation and power up of the 751 NOTE Due to mounting screws through its case the 751
7. is not considered waterproof 3 1 Unpacking 1 Verify that there is no shipping damage If there are signs of damage immediately advise the shipper then Teledyne API 2 Remove the 751 from its shipping carton 3 Open the lid and check for damage inside 4 Check the line voltage and frequency label on the instrument to ensure that it matches the local power source 3 2 Installation The basic 751 is a portable self contained instrument there are no installation instructions other than to ensure adequate support for its weight However the connections must be made to the instrument panel with the lid open see Section 3 4 for connection instructions CAUTION TO AVOID PERSONAL INJURY OR DAMAGE TO THE INSTRUMENT ALWAYS OPERATE THE 751 WITH THE LID OPEN 07836C DCN7021 3 1 Getting Started Teledyne API Model 751 Zero Air Generator 3 3 Instrument Panel Figure 3 1 illustrates the Model 751 instrument layout and key connections for startup Drain Fitting AC Input Zero Air Out Fitting Figure 3 1 Model 751 Startup Connections 3 2 07836C DCN7021 Teledyne API Model 751 Zero Air Generator Getting Started 3 4 Electrical and Pneumatic Connections 3 4 1 Electrical NOTE To maintain compliance with EMC standards it is required that the power cord length be no greater than 3 meters Connect the power cord from the AC input connection to the proper power source
8. these messages carefully Each safety message is associated with a safety alert symbol and are placed throughout this manual and inside the instrument The symbols with messages are defined as follows WARNING Electrical Shock Hazard HAZARD Strong oxidizer GENERAL WARNING CAUTION Read the accompanying message for specific information CAUTION Hot Surface Warning Do Not Touch Touching some parts of the instrument without protection or proper tools could result in damage to the part s and or the instrument Technician Symbol All operations marked with this symbol are to be performed by qualified maintenance personnel only Electrical Ground This symbol inside the instrument marks the central safety grounding point for the instrument CAUTION This instrument should only be used for the purpose and in the manner described in this manual If you use this instrument in a manner other than that for which it was intended unpredictable behavior could ensue with possible hazardous consequences NEVER use any gas analyzer to sample combustible gas es gt Class Note For Technical Assistance regarding the use and maintenance of this instrument or any other Teledyne API product contact Teledyne API s Technical Support Department Telephone 800 324 5190 Email sda_techsupport teledyne com or access any of the service options on our website at http www teledyne api com 07836C DCN7021 iii CONSIGNE
9. 7830000 J8 1 AC Neutral Assy Pump 230V 077990100 L2 Control Board 077830000 J8 2 Power Gnd Assy Pump 230V 077990100 G Control Board 077830000 J8 3 078720000 Cbl Assy AC Power 751X AC Line Power Entry CN0000073 L_ Power Switch SW0000069 L AC Neutra Power Entry CN0000073 N Power Switch SW0000069 N Power Gnd Power Entry CN0000073 G Shield SW0000069 Power Gnd Power Entry CN0000073 G Chassis Gnd AC Line Switched Power Switch SW0000069 L Control Board 077830000 Ji 3 AC Neutral Switched Power Switch SW0000069 N_ Control Board 077830000 Ji 6 Power Gnd Power Entry CN0000073 G Control Board 077830000 Ji 2 079910000 Cbl Assy Power Supply 751X AC Line Power Supply PS0000048 J1 AC 1 Control Board 077830000 J2 1 AC Neutra Power Supply PS0000048 J1 AC 3 Control Board 077830000 J2 5 12V Power Supply PS0000048 J2 DC 1 Control Board 077830000 J2 4 12V RET Power Supply PS0000048 J2 DC 3 Control Board 077830000 J2 8 07836C DCN7021 B 3 B 4 This page intentionally left blank 07836C DCN7021 07836C DCN7021 078580200 077940100 CONTROL BOARD 077830000 AC POWER ENTRANCE 079910000 078650000 115V 07865100 230V 751 D RVSONS OOOO y O DESCRIPTION DATE DCN APPROVED A N INITIAL RELEASE 8 28 13 6768 AC POWER SWITCH 078720000 078610000 Printed Documents are Uncontrolled TELEDYNE ADVANCED POLLUTION INSTRUMENTATION Everywhereyoulook GE INTERCONNECT DR
10. ADVANCED POLLUTION INSTRUMENTATION Everywhereyoulook TELEDYNE OPERATION MANUAL MODEL 751 ZERO AIR GENERATOR TELEDYNE ADVANCED POLLUTION INSTRUMENTATION 9480 CARROLL PARK DRIVE SAN DIEGO CA 92121 5201 USA Toll free Phone 800 324 5190 Phone 858 657 9800 Fax 858 657 9816 Email api sales teledyne com Website http www teledyne api com Copyright 2014 07836C DCN7021 Teledyne Advanced Pollution Instrumentation 23 December 2014 ABOUT THIS MANUAL This Model 751 Zero Air Generator operation manual is comprised of multiple documents as listed below Part No Rev Name Description 07836 C Model 751 User Manual this manual 07840 A Model 751 Spare Parts List in Appendix A of this manual 078380100 A Model 751 Interconnect List in Appendix B of this manual 07838 A Model 751 Interconnect Diagram in Appendix B of this manual NOTE Read this manual in its entirety before making any attempt to operate the instrument REVISION HISTORY 751 Manual PN 07836 Date Rev DCN Description 17 Nov 2014 C 7021 Minor refinements 03 Oct 2014 B 6988 Administrative repairs 10 Jan 2014 A 6832 Initial Release 07836C DCN7021 This page intentionally left blank 07836C DCN7021 SAFETY MESSAGES Important safety messages are provided throughout this manual for the purpose of avoiding personal injury or instrument damage Please read
11. AWING 751 TAGE CODE NO o 17F4 07838 A SHEET 10F1 B 5
12. DIX A SPARE PARTS Use of replacement parts other than those supplied by T API may result in Note non compliance with European standard EN 61010 1 Due to the dynamic nature of part numbers please refer to the Website at Note http www teledyne api com or call Technical Support at 800 324 5190 for more recent updates to part numbers 07836C DCN7021 A 1 This page intentionally left blank A 2 07836C DCN7021 078400000 PART NUMBER 005960000 005970000 006900100 018490000 040370200 043910100 057270000 077830200 078580000 078610000 078650000 078650100 078970000 FLO000007 FL0000015 FL0000016 FL0000050 HW0000439 PU0000069 07836C DCN7021 751 SPARE PARTS LIST Revision A DESCRIPTION MEDIA ACTIVATED CHARCOAL KIT MEDIA PURAFIL KIT FELT PADS FOR SCRUBBER CANISTERS PRESSURE GAUGE CO SCRUBBER ASSEMBLY MEDIA SILICA GEL DESICCANT KIT GASKET FOR SCRUBBER CANISTERS PCA CONTROL BOARD 751 ASSY WATER DROP VALVE 751 ASSY 12VDC FAN 751 PUMP ASSY 115V 60HZ 751 PUMP ASSY 230V 50HZ 751 ASSY DRIER CANISTER 751 FILTER COALESCING FILTER INTAKE 751 REPLACEMENT INTAKE FILTER ELEMENT FILTER DFU KYNAR BULKHEAD SCRUBBER MOUNT REBUILD KIT PUMP 751 A 3 This page intentionally left blank A 4 07836C DCN7021 APPENDIX B SCHEMATICS 07836C DCN7021 B 1 This page intentionally left blank B 2 07836C DCN7021 Interconnect List 751 078380100A
13. HE SILICA GEL DESICCANT 5 5 5 8 LEAK CHECK 77 1 1 5 5 5 9 FILTER REPLACEMENT 5 5 6 5 9 1 Intake Filter 5 6 A IA a e e a O Ea 5 6 6 TROUBLESHOOTING a i 6 1 2 dg A 1 ADDENDIXSRBSCHEMATICG B 1 LIST OF FIGURES FIGURE 3 1 MODEL 751 STARTUP CONNECTIONS occcoccccnoncnoncnnnnnnnonononononononononononononononononononononononononos 3 2 FIGURE 4 1 PNEUMATIC DIAGRAM iii 4 2 FIGURE 4 2 INSTRUMENT PLAN VIEW ceci 4 3 FIGURE 4 3 INSTRUMENT PANEL 7 1 1100 3 4 4 FIGURE 4 4 CONTROL BoapnpLAvout ereet reser erer er eaer ee ereere eree ee esee ee ee 4 8 LIST OF TABLES TABLE 2 1 ee Ne EE 2 1 TABLE 4 1 POWER AND DEW POINT CONDITION INDICATORS eee 4 8 TABLE 5 1 5 0 0 34 5 1 TABLE 6 1 TROUBLESHOOTING 3 3 3 111111 1 0 0 6 1 viii 07836C DCN7021 1 INTRODUC
14. S DE SECURITE Des consignes de s curit importantes sont fournies tout au long du pr sent manuel dans le but d viter des blessures corporelles ou d endommager les instruments Veuillez lire attentivement ces consignes Chaque consigne de s curit est repr sent e par un pictogramme d alerte de s curit ces pictogrammes se retrouvent dans ce manuel et a l int rieur des instruments Les symboles correspondent aux consignes suivantes A A A LA A gt AVERTISSEMENT Risque de choc lectrique DANGER Oxydant puissant AVERTISSEMENT G N RAL MISE EN GARDE Lire la consigne compl mentaire pour des renseignements sp cifiques MISE EN GARDE Surface chaude Ne pas toucher Toucher a certaines parties de l instrument sans protection ou sans les outils appropri s pourrait entrainer des dommages aux pi ces ou l instrument Pictogramme technicien Toutes les op rations portant ce symbole doivent tre effectu es uniquement par du personnel de maintenance qualifi Mise la terre Ce symbole l int rieur de l instrument d termine le point central de la mise la terre s curitaire de l instrument MISE EN GARDE Cet instrument doit tre utilis aux fins d crites et de la mani re d crite dans ce manuel Si vous utilisez cet instrument d une autre mani re que celle pour laquelle il a t pr vu l instrument pourrait se comporter de fa on impr visible et entra ner des cons
15. SOURCE PRIOR TO PERFORMING ANY LEAK CHECK PROCEDURE Power off the unit and unplug the power cord Cap the zero out fitting and the drain port fitting Disconnect the line to the dewpoint sensor manifold and cap it Plug in the power cord power on the unit and allow it to run for one minute until it s pressurized Turn off the power switch and wait five minutes The reading on the instrument panel pressure gauge should not change NOTE This procedure checks the majority of the components and fittings If you believe that there is still a leak please contact Technical Support 858 657 9800 07836C DCN7021 5 5 MAINTENANCE Teledyne API Model 751 Zero Air Generator 5 9 Filter Replacement 5 9 1 Intake Filter To replace the filter element housed in the serviceable Intake Filter assembly Figure 4 2 1 Turn the filter cap counter clockwise and remove from the filter housing 2 Replace the used filter element with a new filter element Teledyne API P N FL16 3 Return the filter cap to the filter housing and secure in place with a clockwise turn 5 9 2 Final Filter To replace the disposable Final filter unit Figure 4 2 1 Remove the disposable filter unit DFU from the retainer clip 2 Release the tubing at each end of the DFU by pressing the spring loaded quick connects toward the DFU and pulling the tubing away 3 Dispose the used DFU 4 Reinsert the tubing into each end of the ne
16. TION 1 1 Preface The Model 751 or 751 is an excellent source of clean dry air for dilution calibrators It also may be used as a source of purge air for permeation tube ovens zero air for ozone generators The 751 has an oil free and diaphragm free pump that pushes the air through silica gel desiccant for drying The pump then routes the dry air through multiple scrubbers that remove SO NO NO Oz H2S and CO the outlet air passes through a final filter to assure a clean dry analytical zero air supply The silica gel desiccant removes water yielding gas with a dewpoint of less than 20 C up to 5 SLPM flow rate independent of the inlet dewpoint A microcontroller cycles the water trap valve to prevent the pump from starting against full head pressure The 751 is an ideal accessory to the Model 700E Mass Flow Calibrator or Model 702 Single Point Calibrator as a zero air source for analyzers 1 2 Model 751 Features e Long life scrubbers for SO NO NO2 Oz H2S and CO option e Automatic water drain e Silica gel desiccant for water removal independent of inlet dewpoint e Source of purge air for permeation tube ovens e Source of zero air for Ozone Generators 07836C DCN7021 1 1 Introduction Teledyne API Model 751 Zero Air Generator This page intentionally left blank 1 2 07836C DCN7021 2 SPECIFICATIONS AND APPROVALS 2 1 Specifications Table 2 1 Specifications Output Concentration 7 x 18 5 x 14
17. Teledyne API Model 751 Zero Air Generator Operation 4 2 3 Cooling Coil The cooling coil consists of several turns of copper tubing coiled to form a cylinder through which the cooling fan blows outside air 4 2 4 Pressure Relief Valve The pressure relief valve is a device designed to limit the maximum pressure to which the 751 can be subjected It is set to open at 40 psig The valve may open and make a hissing sound This is normal operation and does not mean there is a problem with the unit CAUTION DO NOT ADJUST THE RELIEF VALVE 4 2 5 Water Trap The water trap is a coalescing type Supersaturated air enters the trap and is rapidly swirled causing the water droplets to deposit on a membrane where the drops coalesce and gather in a puddle at the bottom of the filter bowl 4 2 6 Water Drain Valve Accumulated water is drained from the filter through a stainless steel solenoid operated valve The valve is sequenced by the controller and is pulsed open every minute to remove water from the filter bowl CAUTION THE WATER AIR SPRAY LEAVING THE DRAIN FITTING SPURTS AT A HIGH VELOCITY AND MUST BE CONDUCTED THROUGH A LENGTH OF TUBING AWAY FROM ANY SENSITIVE COMPONENTS The operation cycle has been preset at the factory and is not adjustable 4 2 7 Pressure Regulator The pressure regulator is set at 30 psig at the factory except for customized units Should adjustment be desired the regulator is accessible on the instrume
18. a Before emptying the used charcoal wearing a dust mask could be helpful as a preventive measure since it is possible that some charcoal dust may rise when emptying and refilling the canister NOTE The push to connect fittings allow quick tubing connection and disconnection using an internal grasping ring and O ring to keep the tubing secure To disconnect push on the white release ring and pull the tubing straight out of the fitting To reinstall insert the tubing into the fitting until it is fully seated 1 Turn off the 751 and wait for the pressure to go to zero Open the instrument panel or remove the top cover Remove the 1 4 tubing connected to the top of the scrubber canister Release the fastening strap to free the canister Remove the 1 4 tubing connected to the bottom of the canister Unscrew the cap of the canister Remove the pad from the top of the canister Pour out the charcoal and dispose of it properly e OT e es IN Refill the canister with fresh charcoal up to 3 8 to 1 4 from the top Rap the sides of the canister gently to settle the charcoal and add more as necessary 10 Replace the pad on top of the charcoal 11 Wipe any charcoal dust from the top edge of the canister This is the surface which seals against the washer 12 Check that the washer is in place in the cap 13 Replace the cap and tighten it hand tight 14 Reconnect the lower 1 4 tube connection
19. ates that the 751 is producing clean dry air NOTE If the 751 has been unused for several days with a partially saturated dryer canister it may be necessary to replace the dryer desiccant per Section 5 7 to achieve final purity and dryness 3 6 Storage and Transportation If the 751 will not be used for longer than 24 hours or will be transported the following procedure applies 1 2 3 Turn off the 751 Wait approximately 1 minute Turn on the 751 The water drain valve will switch into the open position and vent any accumulated water through the water drain Standing H20 will cause corrosion Turn the 751 off Replace the dryer desiccant per Section 5 7 NOTE Failure to complete Step 5 may result in dewpoint errors during next use This process of cycling the power will vent any water that has accumulated in the coalescing filter and will prevent this water from passing into the 751 in the event that the instrument is inverted during storage or shipment Replacing the dryer desiccant will remove any partially saturated desiccant from the dryer canister which is recommended for storage and shipment 07836C DCN7021 Teledyne API Model 751 Zero Air Generator Getting Started 3 7 Expendable Kits OPT 42A A one year supply of scrubber media and outlet filter are available from Teledyne API as Option 42A Refer to Appendix B for a list of expendables 3 8 Silica Gel Kits OPT 42B am
20. cators POWER DEW POINT Instrument State Indicator Indicator Red Power ON Dewpoint BAD Red Flashing Power ON Dewpoint CRITICAL Red Flashing Temperature Fault Red Flashing Red Dewpoint Fault 4 2 16 Dewpoint Sensor The dewpoint sensor ensures that the 751 maintains a dewpoint less than 20 C by monitoring the condition of the silica gel output When the dewpoint rises above the warning setpoint the DEW POINT LED will change color See Table 4 1 4 8 07836C DCN7021 5 MAINTENANCE 5 1 Schedule PLUGGED IN WARNING THERE ARE HIGH VOLTAGES PRESENT WHILE THE 751 IS THE OPERATIONS OUTLINED IN THIS SECTION ARE TO BE PERFORMED BY QUALIFIED MAINTENANCE PERSONNEL ONLY Before performing any maintenance cycle the power on off and drain any water that may be present refer to instructions for Storage and Transportation in Section 3 6 Table 5 1 presents the maintenance schedule Table 5 1 Maintenance Schedule Item Charcoal Scrubber Purafil CO Scrubber Option Silica Gel Intake and Final Filters Recommended Frequency Annually Annually When Contaminated When Saturated When Contaminated Refer to Section 5 4 5 5 5 6 5 7 5 9 January February March April May June Month July August September October November December 07836C DCN7021 5 1 MAINTENANCE Te
21. e tubing attached to the compressor is vibrating against a component Adjust the placement of the tubing 07836C DCN7021 6 1 TROUBLESHOOTING Teledyne API Model 751 Zero Air Generator Problem Probable Cause Corrective Action Pressure does not increase to 30 psig Air demand to too high Maximum air flow is 5 SLPM No action Pressure will increase as flow demand decreases Air Inlet impeded Remove the inlet filter and check for impediment or replace filter element Pressure regulator is set too low Adjust the pressure on the instrument panel Please see Warning Note at end of this table Air leakage Check for leaks Refer to Section 5 8 Pump has low output pressure Rebuild pump see sticker on pump for rebuild kit PN Output pressure surges Pressure regulator is set too high and pegged Adjust pressure regulator down Output air is not Zero Scrubbers may be contaminated Replace the scrubber media Output air is not dry Silica gel is saturated Replace silica gel Scrubbers are saturated Dry scrubber media Dewpoint sensor tube disconnected Verify connection WARNING THE 751 NOMINAL DELIVERY PRESSURE IS 30 PSIG NEVER SET THE DELIVERY PRESSURE HIGHER THAN 35 PSIG TO DO SO MAY CAUSE DAMAGE TO THE 751 AND INJURY TO THE OPERATOR 6 2 07836C DCN7021 APPEN
22. ledyne API Model 751 Zero Air Generator 5 2 1 5 3 Cleaning Occasionally depending upon the local conditions check the inside of the 751 for excessive dirt or dust Particularly check the cooling fan cooling coil and compressor fan inlet Remove any dirt or dust with a vacuum cleaner Do not use an air jet This will only redistribute the dirt and will not remove it Checking The Tubing Under the vibration of the compressor it is possible for some parts of the TFE tubing to abrade against nearby objects This is most likely to occur with the tubing directly attached to the compressor Check to see if any signs of abrasion are present and if so re dress the tubing If any section of tubing appears to be heavily abraded remove and replace it CAUTION DO NOT LOOSEN ANY TUBING CONNECTION WHILE THE 751 IS RUNNING CAUTION BEFORE WORKING ON THE 751 PLUMBING TURN OFF THE 751 WAIT FOR THE PRESSURE GAUGE TO READ ZERO THIS MAY REQUIRE THAT YOU LOOSEN THE INSTRUMENT PANEL BULKHEAD UNION TO ALLOW THE AIR TO BLEED AWAY WARNING EVEN THOUGH THE INSTRUMENT PANEL POWER SWITCH IS OFF THERE IS LINE VOLTAGE PRESENT AT THE POWER ENTRY TERMINALS POWER SWITCH TERMINALS AND ON THE CONTROL BOARD FOR ADDED SAFETY REMOVE THE POWER CORD FROM THE INSTRUMENT PANEL RECEPTACLE 5 2 07836C DCN7021 Teledyne API Model 751 Zero Air Generator MAINTENANCE 5 4 Replacing the Charcoal Scrubber Medi
23. nt panel The adjustment knob has a push pull locking ring which should be reengaged after making an adjustment to prevent the knob from turning under vibration 07836C DCN7021 4 5 Operation Teledyne API Model 751 Zero Air Generator When the 751 is used with the Teledyne API Model 700 Calibrator the pressure should be between 28 and 32 psig The Model 700 calibrator requires that its air source be stable and not subject to compressor induced pressure surges or pressure variations with flow 4 2 8 Silica Gel Desiccant The silica gel desiccant absorbs the remaining moisture from the air Silica gel has a finite life and changes color as it becomes saturated We recommend that it be replaced when the dewpoint indicator changes from green to yellow 4 2 9 NO Scrubber The NO scrubber uses Purafil to oxidize NO to NO Purafil has a finite life and we recommend that it be replaced annually or sooner if the level of NO in the air is high 4 2 10 Charcoal Scrubber Activated charcoal removes NO O3 SO and H2S The charcoal should be replaced annually or sooner if there are high atmospheric levels of these contaminants or if the calibrator zero air shows signs of a positive drift 4 2 11 Optional Carbon Monoxide CO Scrubber The CO scrubber catalytically oxidizes CO to CO2 The catalyst is proprietary and operates at room temperature theoretically it should never need changing However if in the event it were to become c
24. ontaminated or poisoned we recommend that the scrubber be replaced 4 2 12 Final Filter The final filter located adjacent to the instrument panel retains any particulates released by the 751 The filter rating is 99 99 removal of 0 1 micron particles If the filter becomes restricted it should be replaced 4 2 13 Pressure Gauge The pressure gauge shows the regulated air pressure available to a calibrator The gauge will usually indicate 30 psig If the flow demand from the calibrator changes the regulator may need to be adjusted to display the correct pressure on the gauge It is normal for the gauge needle to not rest at zero when the system is not under pressure 4 6 07836C DCN7021 Teledyne API Model 751 Zero Air Generator Operation 4 2 14 Controller WARNING DANGEROUS VOLTAGES EXIST ON THE CONTROLLER BOARD All functions of the 751 are managed by the 751 Control Board Figure 4 4 The control board provides connections for all switched and non switched AC components AC input and the instrument panel power switch circuit breaker e Switched components include the water drain valve and the relief valve Non switched components include the fan the LED board and the pump Provision for AC power input is via connector J1 AC out and DC in are via connector J2 All connections are made by quick release electrical connectors to aid in servicing Refer to Figure 4 4 for the layout and to Appendix B for the inte
25. p C An additional supply of Silica Gel media is available from Teledyne API as Option 42B A spare Silica Gel dryer cartridge is available from Teledyne API as Option 42C Refer to Appendix B for a list of expendables 3 9 Flow Restrictor OPT 72B A flow restrictor is available in order to run the 751 without a calibrator or other method of flow restriction It is connected to the outlet fitting and restricts the air flow to 4 SLPM The flow is pressure dependent which is adjustable by adjusting the pressure regulator 07836C DCN7021 3 5 Getting Started Teledyne API Model 751 Zero Air Generator This page intentionally left blank 3 6 07836C DCN7021 4 OPERATION 4 1 Overview The 751 dries and scrubs ambient air to produce zero air Figure 4 1 illustrates the path of the air being routed through the 751 First the compressor draws air in through the inlet filter At the compressor outlet the air is under pressure and hot from the compression The relative humidity is high as a result of the high pressure The air then is conducted through the cooling coil where heat is removed by transfer to the cooling fan air With the high pressure and the temperature reduced to ambient level the relative humidity is at its highest At this point the air is usually supersaturated From the cooling coil the damp air passes through a coalescing filter where the excess water is separated and settles in the bottom of the fil
26. quences dangereuses NE JAMAIS utiliser un analyseur de gaz pour chantillonner des gaz combustibles 07836C DCN7021 WARRANTY WARRANTY POLICY 02024G COVERAGE Teledyne Advanced Pollution Instrumentation TAPI a business unit of Teledyne Instruments Inc provides that Prior to shipment TAPI equipment is thoroughly inspected and tested Should equipment failure occur TAPI assures its customers that prompt service and support will be available After the warranty period and throughout the equipment lifetime TAPI stands ready to provide on site or in plant service at reasonable rates similar to those of other manufacturers in the industry All maintenance and the first level of field troubleshooting are to be performed by the customer NON TAPI MANUFACTURED EQUIPMENT PRODUCT RETURN Equipment provided but not manufactured by TAPI is warranted and will be repaired to the extent and according to the current terms and conditions of the respective equipment manufacturer s warranty All units or components returned to Teledyne API should be properly packed for handling and returned freight prepaid to the nearest designated Service Center After the repair the equipment will be returned freight prepaid The complete Terms and Conditions of Sale can be reviewed at http www teledyne api com terms_and_conditions asp CAUTION Avoid Warranty Invalidation Failure to comply with proper anti Electro Static Discha
27. rconnect and other drawings The 751 control board is microcontroller based and all timing is derived from the AC line It automatically senses the line frequency 50 60 Hz and cycles the water drain solenoid valve and monitors the dewpoint sensor LED D13 Figure 4 4 flashes at 1 second intervals as an indication that the controller is functioning and a watchdog timer is enabled to prevent any power line disturbances from halting the processor J11 D13 Front Panel Not TP8 TP13 TP6 CPU Indicator LED Board Used 5VDC GND 12VDC LED blinking CPU alive Not Used 3 CA Xf J7 16 B 5 a z o QUFICO Fan Power K e PE J2 Indicator Ol o ci tor o Ema kt AC DC LED lit ON Power SW3 Mntnc Switch AC Input EN Dewpoint Sensor J8 Pump caa Face 0 9 8 Aele J16 J13 J15 J3 J5 Dump Not Not Not D9 Not Not Valve Used Used Used Pump Used Used Status LED lit ON 07836C DCN7021 4 7 Operation Teledyne API Model 751 Zero Air Generator Figure 4 4 Control Board Layout 4 2 15 Front Panel Indicator Lights Multicolor indicator lights for both the power state and dewpoint state relay diagnostic information and instrument mode to the user Table 4 1 Power and Dew Point Condition Indi
28. replace the unions in the cartridge 9 Reassemble the scrubber replace it in the chassis and reconnect the tubing and receptacle 10 Turn on the 751 and perform a leak check using soap solution 5 4 07836C DCN7021 Teledyne API Model 751 Zero Air Generator MAINTENANCE 5 7 Replacing the Silica Gel Desiccant 1 Turn off the power and wait for the pressure to go to zero Orientation is important Note which side of the dryer contains the compression spring and metal grate 2 Remove the inlet outlet tubes attached to the canister by pressing the metal button to unlatch them 3 Remove canister from the two fastening straps 4 On spring end of canister carefully unscrew lid with control to prevent sudden release of spring 5 Remove the spring the metal grate and the filter from the canister 6 Dispose of the used silica gel in accordance with local regulation 7 Refill the canister with a new batch of silica gel see Spare Parts Kits in Appendix B 8 Return the filter first then the metal grate and the spring to the canister in same order 9 Screw lid back on the canister 10 Resecure the canister with fastening straps in the same orientation as it was when removed Mounting incorrectly will result in a dewpoint error 11 Reattach the tubes seating them in the fittings such that they click into place 12 Turn on the 751 5 8 EN Ge 0 SS Leak Check WARNING DISCONNECT THE POWER CORD FROM THE POWER
29. rge ESD handling and packing instructions and Return Merchandise Authorization RMA procedures when returning parts for repair or calibration may void your warranty For anti ESD handling and packing instructions please refer to the manual Fundamentals of ESD PN 04786 in its Packing Components for Return to Teledyne API s Customer Service section The manual can be downloaded from our website at http www teledyne api com under Help Center gt Product Manuals in the Special Manuals section RMA procedures are under Help Center gt Return Authorization 07836C DCN7021 This page intentionally left blank vi 07836C DCN7021 TABLE OF CONTENTS ABOUT THIS MANUAL a cas cater Scat Real Aleit Rane let ae DE M ce Ales se te REVISION HISTORY Se 3 3 333 3 1 11 11 11 1111111 11 ade SAFETY MESSAGES 77 1857 1 0 III TINT DUG TION our 1 1 Wels PREFACE geed 1 1 1 2 MODEL FS VAR ct hac A ah TS 1 1 2 SPECIFICATIONS AND APPROVALS rr rr 2 1 221 EEGEN 2 1 2 2 ee e EE 2 2 al A EE 2 2 222 EE 2 2 3 GETTING STAR DED EE 3 1 WER E Eer Te 3 1 ose INSTALLATION 7 5090 9 3 1 33 INSTRUMENT PANEG ss SO a a 3 2 3 4 ELECTRICAL AND PNEUMATIC CONNECTIONS oooccoocccncccncccnnccnnnnnnnnnnnncnnnnonanonanannnncnanons 3 3 AA 51 5 0 00 3 3 tee EIERE EE 3 3 3 9 ee TEE 3 4 3 6 STORAGE AND TRANSPORTATION
30. ter The controller periodically opens the solenoid drain valve allowing the water to be expelled through a drain fitting This partially dried air flows through a canister of silica gel desiccant which traps and absorbs the remaining water and a portion of the other contaminants The pressure relief valve may open occasionally and can be loud but this is a normal part of the operation for the 751 As the air leaves the silica gel canister its pressure is controlled to 30 psig by an air pressure regulator mounted on the instrument panel This maintains a constant pressure at the calibrator inlet and is displayed by the pressure gauge on the 751 instrument panel For a final clean up the dry regulated air enters the specific scrubbers as follows The NO scrubber where NO is oxidized to NO The activated charcoal scrubber where the NO 03 SO and HS are absorbed The optional CO scrubber where CO is catalytically oxidized to CO A A ES The clean dry air passes through a fine particulate filter and leaves the 751 through the instrument panel bulkhead union Zero Air Out 07836C DCN7021 4 1 Operation Teledyne API Model 751 Zero Air Generator 751 Chassis Pressure Relief Valve Inlet Filter S Pressure Regulator Drain Valve DRAIN OUT Silica Gel Desiccant l Dewpoint ZERO AIR OUT Sensor DFU Filter
31. w DFU Teledyne API P N FL50 pushing in tightly to secure 5 Secure the new filter unit into the retainer clip 5 6 07836C DCN7021 Teledyne API Model 751 Zero Air Generator TROUBLESHOOTING 6 TROUBLESHOOTING This section presents possible problems and their causes and solutions CAUTION AVOID WARRANTY INVALIDATION FAILURE TO COMPLY WITH PROPER ANTI ELECTRO STATIC DISCHARGE ESD HANDLING MAY VOID YOUR WARRANTY FOR ANTI ESD HANDLING INSTRUCTIONS PLEASE REFER TO THE MANUAL FUNDAMENTALS OF ESD PN 04786 WHICH CAN BE DOWNLOADED FROM OUR WEBSITE AT HTTP WWW TELEDYNE API COM UNDER HELP CENTER gt PRODUCT MANUALS IN THE SPECIAL MANUALS SECTION Table 6 1 Troubleshooting Problem Probable Cause Corrective Action Power light does not come on Unplugged power cord Plug in power cord at both ends Incorrect line voltage Refer to Table 3 1 for the correct line voltage Tripped power switch circuit breaker Reset power switch circuit breaker Compressor does not start after 10 seconds AIR IN filter is plugged Replace the filter element Compressor fan is jammed Check for any mechanical obstruction Pump is not connected to controller Connect the pump to the controller Pump relay K4 is open Replace the controller Instrument vibrates excessively Compressor shock isolator screws are loose Tighten the screws Th
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