Servicing
Fan Replacement
7-12 Model 42i Low Source Instruction Manual Thermo Electron Corporation
2. Disconnect pump power line from AC PUMP connector on the
measurement interface board.
Figure 7-6. Replacing the Pump
3. Remove both lines from pump.
4. Loosen the four captive screws (Figure 7-6) securing the pump and
remove the pump.
5. Install new pump by following previous steps in reverse.
Fan Replacement Use the following procedure to replace the fan (Figure 7-7).
Equipment Required:
Fan
Philips screwdriver
1. Turn instrument OFF, unplug the power cord, and remove the cover.
2. Remove the fan guard from the fan and remove the filter.
Captive Screws (4)
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap must
be worn while handling any internal component.
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