Pump Rebuilding - Thermo Scientific 49i Instruction Manual

Preventive Maintenance

Pump Rebuilding

Pump Rebuilding
5-6 Model 49i Instruction Manual
2. Remove capillary, check for particulate deposits, clear any blockage with
a wire less than 0.015-inch OD, or replace the capillary by following the
above steps in reverse.
Capillary
Capillary
Figure 5-1. Capillary Location
Use the following procedure to rebuild the pump
the pump, see "Pump Replacement" in the "Servicing" chapter.
Equipment Required:
Flatblade screwdriver
Pump rebuild kit (flapper valve and diaphragm)
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.
1. Turn instrument OFF, unplug the power cord, and remove the cover.
2. Loosen the fittings and remove both lines going to the pump.
(Figure 5-2). To replace
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