Figure 5-2. Inspecting And Cleaning The Fan Filters - Thermo Scientific 42i Instruction Manual

Pump Rebuilding
Thermo Fisher Scientific
Figure 5–2. Inspecting and Cleaning the Fan Filters
Use the following procedure to rebuild the pump
the pump, see "Pump Replacement" in the "Servicing" chapter.
Equipment Required:
Pump Repair Kit
Allen Wrench, 3 mm
Wrench, 9/16-inch
Needlenose Pliers
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. For more information
about appropriate safety precautions, see the "Servicing" chapter.
1. Turn instrument off, unplug the power cord, and remove the cover.
2. Loosen fittings and remove both lines going to the pump.
3. To ensure proper reassembly, mark the position of the pump head by
using a pencil or other marker to draw a line from the top plate down
across the bottom plate to the pump body. Refer to this reference line
when reassembling the pump head.
Mounting Screws (4)
Filter
Fan Guard
Figure
Model 42i Instruction Manual
Preventive Maintenance
Pump Rebuilding
5–3. To replace
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5-5