01440D1 Light Industrial Gas Analyser Service Manual
Contents
1. Figure 2 10 Interconnecting Wiring 01440D1FTX Oxygen Analyser 01440D Light Industrial Gas Analyser Service Manual 2 19 Figure 2 11 Circuit Diagram Front Panel 01420904B 2 20 01440D Light Industrial Gas Analyser Service Manual Figure 2 12 Circuit Diagram Front Panel 01420904B 01440D Light Industrial Gas Analyser Service Manual 2 21 Figure 2 13 Output Connections 2 22 01440D Light Industrial Gas Analyser Service Manual 3 SPARE PARTS LIST WARNINGS 01440D1FTX and 01440D1STD spares must be supplied by Servomex to comply with personnel safety requirements and to maintain performance specification The recommended quanitity of spares to be held in stock is a guide only The exact requirement for spare parts will depend upon the reliance being placed upon the analyser and the distance from Servomex or their agent The following spares are required to maintain normal operation of the analyser Table 3 1 Spares for Normal Operation Recommended qty Part Number Description No of analysers 1 3 4 9 10 S1400990 AC supply fuse kit 10 off T 2A Used in single measurement units 10 off T 3 15A Used in dual measurement units S1800985 AFCD filter element kit 10 off filt2. 01440D Light Industrial Gas Analyser Service Manual Table 3 3 01520709 Spares Infrared Transducers Description 0 0 25 CO transducer Spare Pipe work Kit S1420943 Recommended qty No of analysers 1 3 eo 4 9 eo 01520708 0 0 5 CO transducer 51420943 01520707 0 1 CO transducer 51420944 01520706 0 2 5 CO transducer 51420945 01520705 0 5 CO transducer 51420945 01520704 01520703 0 10 CO transducer 0 25 CO transducer S1420945 S1420945 01520702 0 50 CO transducer S1420945 01520701 0 100 transducer S1420945 01522707 0 1 CO transducer 01440D1F TX Only 1420943 OOo oO O O o oc oc O o oc oc 01522706 0 2 5 CO transducer 01440D1FTX Only S1420943 01522704 0 10 CO transducer 01440D1FTX Only S1420945 01522703 0 25 CO transducer 01440D1FTX Only S1420945 01522702 0 50 CO transducer 01440D1FTX Only S1420945 01521705 0 5 CH transducer 01440D1FTX Only 51420944 01521703 0 25 CH transducer 01440D1FTX Only S1420945 01521702 01521701 0 50 CH transducer 01440D1FTX Only 0 100 CH transducer 01440D1FTX Only S1420945 S1420945 01440D Light Industrial Gas Analyser Service Manual 3 3 Table 3 4
3. Spare for Oxygen Transducer Recommended qty Part oer Number Description No of analysers 1 3 4 9 10 01158000 Oxygen Transducer 0 0 1 00325000 Measuring Cell 0 1 1 3 1 Drawings Incluced in the Manual Circuit Diagram of Control Board 01422911 Relevant drawing 01422 111 is enclosed 3 4 01440D Light Industrial Gas Analyser Service Manual
4. correctly between boards sozio gt ALARM OFF ON ASSY 2 ALARM ALARM LOW Figure 2 3 Range Changes and Alarm Function Setting 01440D Light Industrial Gas Analyser Service Manual 2 11 2 10 Replacing the Front User Interface 01420904 Remove the main control PCB refer to section 2 9 Disconnect the display ribbon cable Undo the five screws which retain the PCB qu UEM TINY xc Before installing new control PCB transfer the switch settings for the display reference Table 2 2 and Figure 2 4 5 Replace the front panel PCB paying particular attention to the alignment of the LED s associated with the function switches and bezels Before tightening the fixing screws ensure that the switches operate without sticking 6 Installation is the reverse of the removal process Ensure spacers are transferred from old PCB as required Table 2 2 SW3 Switch Settings Measurement SW3 Settings 1 3 4 5 6 100 02 CO amp CH 50 CO CO 8 CH 25 CO CO amp CH 10 CO 8 CO 5 CO amp CH 2 5 CO amp CO 1 CO 8 CO 0 5 CO 0 25 CO 2 12 01440D Light Industrial Gas Analyser Service Manual cd e O e N T e 12345678 Figure 2 4 Component Layout Front Panel PCB 01420904B 2 11 Replacing the Led Front Panel display 2553 7332 1 Remove the front panel PCB s reference sectio
5. power supply cover and secure cover to brackets Ensure pipework is leak tight See Sections 2 14 1 or 2 14 2 Calibrate the analyser as described in the Operator Manual and check both the analogue output and display reading See Section 2 5 2 10 01440D Light Industrial Gas Analyser Service Manual 2 8 2 9 Replacing the Relay Output 01420906 Disconnect the flow sensor wires from TB4 and undo the four hexagonal fixing sets located adjacent to the 15 way D connectors Disconnect the lower 34 way ribbon connector from the front panel PCB Disconnect the 16 way ribbon connector at the transducer The Relay Output PCB may now be replaced installation is the reverse of the removal process ensure all connections are remade including the link across TB4 01440D1FTX only Replacing the Main Control PCB 01420915 If necessary remove the transducer and power supply to improve access See Section 2 3 1 for oxygen transducer or 2 4 1 for infrared transducer Disconnect all connections to the display noting their positions Undo the M3 screws and lift the PCB off of the three self clinching spacers Fit new control PCB TRANSFER LINK SETTINGS for ranges and alarms reference Figure 2 3 Infra red units only it will be necessary to utilise links from the old PCB Range 1 must be set to 100 range 2 must be linked across 10 20 and 50 Installation is the reverse of the removal process Ensure spacers are positioned
6. vent 01440D1FTX 3 2mm 1 8 OD tube 01440D1STD 1 to 10psig 7 to 70kPag 01440D1STD Inlet pressure BPR 17 to 20psia 120 to 140kPaa 01440D1FTX Typically 0 3kPag 30mmWG at 200ml min 01440D1STD 1 to 01440D1STD Flow Rate BPR 1 to 2l min 01440D1FTX USER LIMITED to 250ml min MAXIMUM 01440D1STD lt 3um micro meters an internal 01440D1STD replaceable 0 6um filter is fitted as Particulates BPR standard 01440D1FTX The user must fit an external filter of 01440D1STD Must not be flammable toxic or corrosive 01440D1STD as well as being clean and oil free Condition BPR 01440D1FTX Must not be corrosive as well as being clean and oil free 2 2 01440D Light Industrial Gas Analyser Service Manual 2 3 Servicing the Oxygen Transducer WARNING The opening of covers or removal of parts except those to which access can be gained by hand may expose electrical terminals Ensure power is disconnected before working on the analyser NOTE Due to the strong magnetic field which exists around the transducer it is advisable to remove wristwatches if worn when servicing the oxygen transducer 2 3 1 Replacement of the 1158 Transducer 1 Carefully remove the foam cover from the transducer and disconnect the 16 way ribbon cable from the transducer the sample connections to the cell and the heater and thermal fuse wires from TB2 on front the panel PCB 2 Loosen the 4 off M4 nut
7. SERVOMEX EMISSIONS ANALYSERS SERVOPRO 1440071 Light Industrial Gas Analyser Service Manual Part Number 01440002D dt SERVOMEX A MEASURABLE ADVANTAGE Language UK English This page intentionally blank 0144001 Light Industrial Gas Analyser Service Manual Ref 01440 002D 5 Order as part No 01440002D This page intentionally blank Table of Contents 1 INTRODUCTION er 1 1 1 1 Scope of this Manual 05 ed laes 1 1 2 REPAIR ae ee 2 1 2 1 Test Equipment and 5 2 1 2 2 Sample condition requirements 2 2 2 3 Servicing the Oxygen Transducer 2 3 2 3 1 Replacement of the 1158 Transducer 2 3 2 3 2 Replacement of the measuring Cell 2 4 2 3 3 Adjusting the Transducer Gain 2 6 2 3 4 Replacing the Thermal Fuse Assembly and or Heater Disc 2 6 2 4 Servicing the Infrared Transducer 2 7 2 4 1 Removal of the Infrared Transducer 2 7 2 5 Checking the Analogue Outputs and Display 2 8 2 5 1 Checking the 2 8 2 5 2 Checking the Span r ee 2 9 2 6 Replacing the Flow Sensor 01800925 2 10 2 7 Replacing the Power Supply Unit PSU 2 10 2 8 R
8. The figures in the following steps assume pure and either air for oxygen or 100 FULL SCALE Infra red transducers span gas Ensure that the analyser has warmed up for at least 1 hour before calibration For oxygen units set range to the lowest concentration usually range 2 2 5 1 1 2 2 8 Checking the Zero Connect a DVM across pins 8 ve and 15 ve on SKS With nitrogen connected to the inlet at the correct pressure and flow see section 2 1 the DVM should read 0 0000V 0 0001V If not then adjust zero control behind flip down door on front panel For oxygen units if zero is not achievable then the coarse zero will need adjustment See section 2 3 2 Setting the zero The instrument display should read zero 1 least significant digit 01440D Light Industrial Gas Analyser Service Manual 5 If not check for correct signal and supply voltages at the connector to the instrument display module 6 If these are correct but the instrument display does not read correctly the display module may need to be replaced Note There is no zero adjustment for the display module itself T To set mA output connect the DVM across pins 5 ve and 12 ve on SKS 8 The DVM should read 4 00mA 0 02mA 9 If not adjust RV2 on the control PCB 01420915 2 5 2 Checking the Span NOTE Set ranges to full scale or 0 25 oxygen if air is used as the oxygen span gas 1 Connect the DVM to pi
9. ak tight See section 2 14 1 or 2 14 2 2 7 Replacing the Power Supply Unit PSU WARNING The opening of covers or removal of parts except those to which access can be gained by hand may expose electrical terminals Ensure power is disconnected before working on the analyser T If necessary remove the transducer to improve access See Section 2 3 1 for the oxygen transducer or Section 2 4 1 for the infrared transducers Note For oxygen transducers it is only necessary to disconnect the thermal fuse and heating coil at TB2 on control PCB 2 Remove the vented metal cover from over the power supply Disconnect mains power cable and the power cable to the control PCB at the power supply 4 Power supply variants i For analysers fitted with an old version power supply MAP40 or FLU3 40 3AD Remove the hexagonal spacers and power supply ii For latest version power supplies Emerson LPT63 unscrew the 4 off M4 waisted screws holding power supply and cover mounting brackets and remove brackets and power supply 5 Installation is for power supply type Emerson LPT63 only i Fit shakeproof washers to waisted M4 screws and screw through power supply pcb from component side ii Position mounting brackets with individual lugs on copper side of supply pcb ii Secure power supply and brackets to analyser chassis using m4 waisted screws iv Re connect mains and control connector to power supply pcb fit grommets to new
10. anual Figure 2 1 Figure 2 2 Figure 2 3 Figure 2 4 Figure 2 5 Figure 2 6 Figure 2 7 Figure 2 8 Figure 2 9 Figure 2 10 Figure 2 11 Figure 2 12 Figure 2 13 List of Figures BellReplagement euere 2 4 Transducer Pot 5 2 8 Range Changes and Alarm Function Setting 2 11 Component Layout Front Panel PCB 01420904B 2 13 01440D1FTX Plumbing Schematic 2 14 01440D1STD Plumbing Schematic 2 15 Interconnecting Wiring 01440D1STD Oxygen Analyser 2 16 Interconnecting Wiring 01440D1STD Carbon Dioxide Analyser 2 17 Interconnecting Wiring 01440D1F TX Infra Red Analyser 2 18 Interconnecting Wiring 01440D1FTX Oxygen Analyser 2 19 Circuit Diagram Front Panel PCB 01420904B 2 20 Circuit Diagram Front Panel PCB 01420904B 2 21 Output Connections eR d por ee Eee VS 2 22 01440D Light Industrial Gas Analyser Service Manual Vi List of Figures 01440D Light Industrial Gas Analyser Service Manual 1 INTRODUCTION 1 4 Scope of this Manual This manual covers the servicing of the Servomex 1440D series of gas analysers This range of analysers can measure up to two gases based on one of two measurement principles a Servomex Single Beam Single Wavelength SBSW infrared transducer and a Servomex paramagnetic oxygen transducer Refer to the Quic
11. eplacing the Relay Output PCB 01420906 2 11 2 9 Replacing the Main Control PCB 01420915 2 11 2 10 Replacing the Front User Interface PCB 01420904 2 12 2 11 Replacing the Led Front Panel display 2553 7332 2 13 2 12 Replacing the infra red Interface PCB 01415930 2 13 2 13 Replacing the Internal Pump 51420940 2 14 2 14 Replacement Plumbing 2 14 2 14 1 OTAAODAF TX 2 ea toe tt ed eade Postes e OS 2 14 2 14 2 OTAAODTS TD EL ao alot outta it ede see Sen 2 15 3 SPARE PARTS LIST 12315423 afa tee os Sole e arr T 3 1 3 1 Drawings Incluced the Manual 3 4 01440D Light Industrial Gas Analyser Service Manual i Table of Contents 01440D Light Industrial Gas Analyser Service Manual Table 2 1 Table 2 2 Table 3 1 Table 3 2 Table 3 3 Table 3 4 List of Tables Requirements for Sample Conditions 2 2 SWS Switch Settings ne Le nds deals tee rar a ERE TES 2 12 Spares for Normal Operation 3 1 Spares for General Use 3 2 Spares Infrared Transducers 3 3 Spare for Oxygen Transducer 3 4 01440D Light Industrial Gas Analyser Service Manual iii List of Tables 01440D Light Industrial Gas Analyser Service M
12. er flow or pressure rates as per section 2 2 Adjust the COARSE SPAN pot on the top of the transducer so that the front panel displays a nominal 120 of air approximately 25 1 Refit the foam cover of the transducer and allow the analyser to stabilise Adjust the SPAN on the front panel so that the display reads 20 9 0 1 Replacing the Thermal Fuse Assembly and or Heater Disc Remove the Transducer as described in section 2 3 1 If replacing the heater disc remove the protective backing from the new heater disc and press firmly onto the base of the transducer Ensure transducer base is clean Refit transducer as described in section 2 3 1 Refit the foam cover of the transducer After replacing the thermal fuse assembly or heater disc the transducer temperature should be re checked Connect a voltmeter to pins 7 and 8 OV on SK5 When the instrument has warmed up adjust RV1 on control PCB 1420 915 so that the reading is 323 3mV 01440D Light Industrial Gas Analyser Service Manual 2 4 Servicing the Infrared Transducer WARNING The opening of covers or removal of parts except those to which access can be gained by hand may expose electrical terminals Ensure power is disconnected before working on the analyser The Infrared transducer in the analyser is non field serviceable In the unlikely event of failure the transducer should be removed by following the procedure below and returned to Servom
13. ers 01440D1STD only 2323 7029 Viton ring for sealing filter element in AFCD 5984 7706 Back Pressure Regulator if fitted 01440D1STD only 5981 0593 O ring for oxygen transducer if fitted Two required per transducer 01440D Light Industrial Gas Analyser Service Manual 3 1 Table 3 2 The following spares are also available for the analyser S1420904B Spares for General Use Description Front switching PCB Recommended aty No of analysers 1 3 4 9 10 2726 4119 Span or zero potentiometer S1420915 Control PCB S1420906 Alarm relay PCB 210198 Power supply Unit S1440922 Power supply Assembly for 2811 2011 replacement only 255 7332 LED display 3 1 2 digits S1420935 Automatic flow control device 01800925 Flow sensor assembly 01440D1STD only 2653 2518 Heater Disc for oxygen transducer only 01420928 Thermal fuse assembly for oxygen transducer only 01415930 Interface PCB for IR modules only S1420940 Pump replacement kit if fitted S1420941 Viton Pipe work kit 01440D1STD only S1420942 Stainless steel pipe work kit 01440D1FTX only oxygen transducer S1420943 S1420944 S1420945 Stainless steel pipe work kits 01440D1FTX only infra red transducers See Table 3 3 01420908 3 2 Protection PCB
14. ex for repair or replacement A list of the IR transducers available is given in Section 3 4 2 4 1 Removal of the Infrared Transducer 1 Remove the two M4 nut holding down the interface assembly 01415930 2 Carefully ease the interface assembly 01415930 from the pin connectors on the transducer PCB Disconnect the transducer pipes from the sampling system Loosen the 4 off M4 nuts retaining the bracket that the transducer is located on Slide the whole assembly to one side and lift out from the analyser 5 When the assembly is free unscrew the transducer from the bracket by the 3 off screws located on the underside of the bracket 6 For the longer off board sensors only slacken the two fixing screws which retain the Infrared bench to the side mounting plate Utilise the slot on the front fixing to remove the bench without completely undoing the fasteners r Remove the transducer PCB by squeezing the catches on the 4 off PCB mounting supports and gently pulling the board off the mounts 8 Installation of the new transducer is the reverse of the above procedure 01440D Light Industrial Gas Analyser Service Manual 2 7 Transducer pots must be wound fully clockwise reference Figure 2 2 SET SPAN AND ZERO FULLY CLOCKWISE Figure 2 2 Transducer Pot Adjustment 2 5 Checking the Analogue Outputs and Display NOTE Calibration gas accuracy must be taken into consideration when setting the zero and span
15. k tight See Section 2 13 1 or 2 13 2 Calibrate the analyser and check both the analogue output and display reading See Section 2 5 Replacement of the measuring Cell MAGNET FRAME YELLOW SPOT S MEASURING CELL LOCKING DEVICE MEASURING CELL Figure 2 1 Cell Replacement Remove the Transducer as described in section 2 3 1 Unsolder the yellow and black wires from the measuring cell and with an Allen key loosen the cell locking clamp screw Grip the cell by the sides and pull the cell out of the magnet frame note that the magnet will exert a very strong holding force on the cell The replacement cell must be fitted the correct way up with the yellow spot connection at the top With the cell fully home tighten the cell locking clamp screw and re solder the wires to the cell with the yellow wire to the connection marked with the yellow spot Refit the transducer using the O rings supplied with the new cell the reverse of section 2 3 1 but do not refit the foam cover at this stage 01440D Light Industrial Gas Analyser Service Manual 10 11 12 13 14 15 16 17 Connect a nitrogen supply to the analyser flow or pressure rates as per section 2 2 Ensure the electrical safety of all parts and power up the analyser SETTING THE ZERO follows on from cell change procedure Set the ZERO on the front panel to mid point 5 turns from either end Adjust the ZERO pot on the top of the transduce
16. kStart Manual or the Technical Data Sheet for the latest technical specification Addresses for technical assistance and spares are given on the rear cover e For information on installation and operation please refer to the QuickStart Manual reference part number 01440003D About this Manual Ref 01440 002D 5 Order as part no 01440002D This manual includes WARNINGS CAUTIONS and NOTES which provide information relating to the following WARNINGS Hazards which could result in personal injury or death CAUTIONS Hazards which could result in equipment or property damages NOTES Alert the user to pertinent facts and conditions 01440D Light Industrial Gas Analyser Service Manual 1 1 1 2 WARNING The electrical power used in this equipment is at a voltage high enough to endanger life Trained personnel should only perform servicing Service training is available from Servomex Before carrying out servicing or repair the equipment should be disconnected from the electrical power supply Tests must be made to ensure that disconnection is complete Note that the relay contacts may be supplied from a separate source of electrical power It may be necessary to fault find with the electrical power connected Where this is necessary extreme caution should be exercised The analyser may contain toxic corrosive flammable or asphyxiant gases Flush the analyser pipe work with clean dry air before commencing
17. max internal pressure 10psig This testing should also include the oxygen cell and its window Rectify leaks and re check 01440D Light Industrial Gas Analyser Service Manual 2 14 2 01440D1STD 1 Follow the plumbing flow schematic shown in Figure 2 6 M FLOW SENSOR BACK W PRESSURE REGULATOR OPTIONAL RESTRICTOR REQUIRED FOR BACK PRESSURE REGULATOR OPTION Figure 2 6 01440D1STD Plumbing Schematic 2 Leak test by connecting together the sample IN and sample OUT gas connections and connect a water manometer to them 3 Pressurise the system to approx 500mm water gauge and leave to stabilise The leak rate should be less than 2mm min after the level has initially stabilised 4 If a leak exists check connections using a soap solution This testing should also include the oxygen cell and its window 5 Rectify leaks and re check 01440D Light Industrial Gas Analyser Service Manual 2 15 VOILMSA ond T Figure 2 7 Interconnecting Wiring 01440D1STD Oxygen Analyser 2 16 01440D Light Industrial Gas Analyser Service Manual Figure 2 8 Interconnecting Wiring 01440D1STD Carbon Dioxide Analyser 01440D Light Industrial Gas Analyser Service Manual 2 17 Figure 2 9 Interconnecting Wiring 01440D1FTX Infra Red Analyser 2 18 01440D Light Industrial Gas Analyser Service Manual
18. ns 2 9 and 2 10 2 Undo the four corner screws on the LED module to replace 2 12 Replacing the infra red Interface PCB 01415930 T Remove the two 4 screw holding down the interface PCB 01415930 2 Carefully ease the interface from the pin connectors on the transducer PCB Disconnect the connectors that go between the interface PCB to the control panel PCB 4 Installation is the reverse of the removal process 01440D Light Industrial Gas Analyser Service Manual 2 13 2 13 Replacing the Internal Pump 51420940 Disconect the pump switch at the front panel of the analyser Remove the Transducer as described in section 2 3 1 Cut the cable ties holding down the pump and lever the pump and pads off the tranducer mounting bracket Installation is the reverse of the removal process Replacement Plumbing Kits 2 14 1 1 01440D1FTX Follow the plumbing flow schematic shown in Figure 2 5 3 2MM 1 8 OD TUBES FLOW RATE 100ML MIN TYPICAL GAS CONNECTIONS 3 2MM 1 8 OD TUBE EXTERNAL FILTER NOT SUPPLIED Figure 2 5 01440D1FTX Plumbing Schematic 2 Leak test by connecting together the sample IN and OUT gas connections and connect a water manometer to them Pressurise the system to approx 500mm water gauge and leave to stabilise No change in manometer level should be detected once the reading has stabilised If a leak exists check connections using a soap solution
19. ns 8 ve and 15 ve on SK5 2 Introduce span gas to the inlet at the correct pressure and flow see section 2 1 the DVM should read 1 0000V 0 0001V If the O2 calibration gas is air at 20 9 purity then the figure would be 0 8360V x0 0001V 3 If not adjust span control behind flip down door on front panel For oxygen units if span is not achievable then the gain of the transducer will need adjustment See section 2 3 2 Setting the span 4 The display should read correct calibration value 1 least significant digit 5 If not adjust RV5 on the front panel PCB 01420904B so that the display reads calibration value 1 least significant digit NOTE It is not essential for the output voltage to be exactly 1 0000V E g if the voltage is 0 9970V then RV5 is adjusted for a display reading of 99 7 0 1 6 To set the mA output connect the DVM across SKS pins 5 ve and 12 ve T The DVM should read 20 00 x 0 02mA or 17 38 0 02mA at air point 8 If not adjust RV3 on control PCB 01420915 01440D Light Industrial Gas Analyser Service Manual 2 9 N Replacing the Flow Sensor 01800925 Unscrew both wires from TB4 on relay and output PCB 01420906 Disconnect inlet and outlet tubes Unscrew flow sensor from rear panel assembly Installation is reverse of the removal process Reconnect to TB4 The pipe from the AFCD goes to the inlet on the flow sensor pu Ph ap OS Ensure pipework is le
20. r so that the display reads 0 2 Set the ZERO on the front panel so that the display reads 0 0 1 SETTING THE SPAN follows on from setting the zero Adjust the FINE SPAN pot on the top of the transducer fully clockwise The potentiometer will click when it reaches the end Adjust the SPAN on the front panel fully clockwise Connect an air supply to the analyser flow or pressure rates as per section 2 2 Adjust the COARSE SPAN pot on the top of the transducer so that the front panel displays a nominal 120 of air approximately 25 1 Adjust the SPAN on the front panel fully counter clockwise Adjust the FINE SPAN pot on the top of the transducer so that the display reads 93 of air approximately 19 5 Refit the foam cover from transducer of the transducer and allow the analyser to stabilise Adjust the SPAN on the front panel so that the display reads 20 9 0 1 01440D Light Industrial Gas Analyser Service Manual 2 5 2 3 3 Adjusting the Transducer Gain It may be necessary to adjust the Span of the transducer if the altitude of use is greater than about 1200m 4000ft above sea level 1 2 2 3 4 2 6 Carefully remove foam cover from transducer Adjust the FINE SPAN pot on the top of the transducer fully clockwise The potentiometer will click when it reaches the end Adjust the SPAN on the front panel fully clockwise Connect an air supply to the analys
21. s retaining the bracket that the transducer is located on Slide the whole assembly to one side and lift out from the analyser With 01440D1FTX versions when the assembly is free unsolder the Yellow and Black wires from the transducer cell connections Move the sleeves on the Pink and Grey wires and unsolder them from the yellow and black wires from the transducer PCB 3 Unscrew the transducer from the bracket by the 3 off screws located on the underside of the bracket then remove the remaining insulation and the 3 off M4 pillars 4 Remove the thermal fuse and heating element from the underside of the transducer being careful not to damage it 5 Installation is the reverse of the removal process Ensure thermal fuse and heater are correctly reconnected For wiring see Figure 2 7 or 2 10 for FTX version With 01440D1FTX versions the Yellow and Black wires to the cell on the new transducer must be unsoldered and then resoldered to the Pink and Grey wires from the Protection PCB connect Yellow to Pink and Black to Grey Replace the sleeves and fit a cable tie to secure them The Yellow and Black wires from the Protection PCB must be soldered to the transducer cell connections Yellow to the connection marked with yellow spot 01440D Light Industrial Gas Analyser Service Manual 2 3 2 4 2 3 2 The pipe from the outlet of the flow sensor if fitted goes to the upper gas connector on the cell Ensure pipework is lea
22. work 01440D Light Industrial Gas Analyser Service Manual 2 2 1 Test Equipment and Tools The following test equipment and tools should be available to personnel responsible for maintenance and calibration of the analyser Volt ohm milli amp meter of high input impedance resolution 0 1mV e Flat blade screwdriver 6mm width Soldering iron 25W De solder braid or vacuum de soldering tool Potentiometer trimming tool 2 5mm AF Allen Key 3mm AF Allen Key Open ended wrench width across flats 0 45 in 7 16in British 3 16 nominal non magnetic e Manometer with a range exceeding 500mm Wg and a bore not exceeding 5mm e Calibration gases Clean dry nitrogen with an oxygen concentration of less than 0 1 01440D1STD and 01440D1FTX Clean dry air nominal concentration 20 9 O5 for oxygen analysers or a certified calibration gas with a suitable CO content for Carbon Dioxide analyser 01440D1FTX only A certified calibration gas with a suitable CO or CH content for Infra red analysers 01440D Light Industrial Gas Analyser Service Manual 2 1 2 2 Sample condition requirements Table 2 1 Requirements for Sample Conditions Dew Point At least 5 C below ambient temperature Temperature Nominally at ambient temperature Inlet Outlet 01440D1STD connections 01440D1STD 6 4mm 1 4 OD tube Note do not BPR restrict analyser
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