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Pump Mounting Screws (2)
(Bottom)
Thermo Fisher Scientific
Pump
Philips screwdriver
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. Turn instrument OFF, unplug the power cord, and remove the cover.
2. Disconnect the pump power cable from the AC PUMP connector on
the measurement interface board.
3. Remove both lines from the pump.
4. Loosen the four captive screws holding the pump bracket to the shock
mounts and remove the pump assembly.
Pump
Pump Bracket
Figure 7–4. Replacing the Pump
5. Install the new pump by following the previous steps in reverse.
6. Perform a leak test as described in the "Preventive Maintenance"
chapter.
▲
Captive Screws (4)
Shock Mounts (4)
Floor Plate
Model 43i Trace Level-Enhanced Instruction Manual
Servicing
Pump Replacement
7-9
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Troubleshooting
