Thermoelectric Cooler Replacement - PAC R6000S Operation Manual

4.2.8

Thermoelectric Cooler Replacement

In the event a detector thermoelectric cooler needs service or replacement, the following steps should be
taken.
1. Turn the power switch to the OFF position and remove the power cord from the detector module.
2. Use the Sulfur Detector Assembly Removal and Replacement procedure (Section 4.2.1) to remove
the detector.
3. Loosen the two securing screws and carefully remove the aluminum heat transfer assembly and
gasket from the top of the detector housing.
4. Disconnect the red and black cooler power wires at the terminal connector, noting their location, and
remove the thermoelectric cooler.
5. Put a small amount of thermal paste on both sides of the new cooler and install the new
thermoelectric cooler onto the PMT housing.
6. Replace the gasket and aluminum heat transfer assembly and carefully tighten the two securing
screws. Ensure that the screws are tightened evenly and that the pressure is evenly distributed to the
cooler.
7. Install the red and black wires onto the terminal connector.
8. Reinstall the detector assembly module.
9. Perform the start-up procedure to confirm proper operation of the new thermoelectric cooler.
10. Recalibrate the instrument.
11. Resume normal operation.
PAC L.P., All Rights Reserved, 2015
ELECTROCUTION HAZARD!
DEATH OR SERIOUS INJURY WILL OCCUR IF NOT AVOIDED!
An electrocution hazard exists because severe electrical shock hazards exist
when working around the high-voltage and/or 115/230 VAC components while
power is applied.
HOW TO PROCEED: Avoid hazard by turning off the unit with the ON/OFF
switch and remove the power connection or power cord from the unit to the
power source. Also, follow any required lock-out/tag-out procedures your
company policy requires.
To prevent electrical shock hazard DO NOT operate this equipment in rain or
wet conditions.
R6000S Operation Manual: Rev. G
Page 59 of 92