Figure 7-6. Pmt Cooler And Reaction Chamber - Thermo Scientific 42i Instruction Manual

Servicing
PMT Cooler and Reaction Chamber Assembly Replacement
7-12 Model 42i Instruction Manual
Nut driver, 1/4-inch
Philips screwdriver
Wire cutters
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly ground antistatic wrist strap must
be worn while handling any internal component.
1. Refer to "Removing the Measurement Bench and Lowering the
Partition Panel" in this chapter to lower the partition panel, then
proceed to the next step below.
2. Disconnect the reaction chamber connector from the temperature
control board.
3. Snap off the temperature control board from the board mounts.
4. Remove the four screws securing the cooler shroud to the rear panel
and remove the shroud.
Captive Screws (4)
(Two Not Shown)
Figure 7–6. PMT Cooler and Reaction Chamber
▲
Temperature Control Board
Cooler Shroud
Reaction Chamber
To COOLER on Measurement
Interface Board
To PMT HVPS
BNC Connector to Input Board
To BENCH on
Temp. Control Board
Thermo Fisher Scientific