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Troubleshooting & Repair Teledyne API - Model T200H/T200M Operation Manual
262
15. Evenly tighten the long mounting screws for good thermal conductivity.
Note The thermo-electric cooler needs to be mounted flat to the heat sink. If
there is any significant gap, the TEC might burn out. Make sure to
apply the thermal pads before mounting it and tighten the screws
evenly and cross-wise..
16. Re-insert the TEC subassembly in reverse order.
Make sure that the O-ring is placed properly and the assembly is tightened evenly.
17. Re-insert the PMT/HVPS subassembly in reverse order and don’t forget the gasket
between HVPS and PMT.
a) Use new plastic screws to mount the PMT assembly on the PMT cold block.
b) Improperly placed O-rings will cause leaks, which – in turn – cause moisture to
condense on the inside of the cooler and likely cause a short in the HVPS.
18. Reconnect the cables and the reaction cell (evenly tighten these screws).
19. Replace the sensor assembly into the chassis and fasten with four screws and
washers.
20. Reconnect all electrical and pneumatic connections.
21. Leak check the system.
22. Power up the analyzer.
23. Verify the basic operation of the analyzer using the ETEST and OTEST features or
zero and span gases, then carry out a hardware calibration of the analyzer
(Section 13) followed by a software calibration.
07270B DCN6512