Servicing
Pump Replacement
Thermo Fisher Scientific
Model 42
i
Trace Level Instruction Manual
7-9
2.
If the instrument is mounted in a rack, remove it from the rack.
3.
Remove the cover.
4.
Disconnect the plumbing connections at the rear of the measurement
bench.
5.
Disconnect the three connectors that pass through the center of the
partition panel.
6.
Remove two screws from the left side of the case (viewed from front).
7.
Remove one screw from the bottom front of the case.
8.
Remove one screw from the top front of the partition panel.
9.
While holding the case securely, loosen the captive screw at the rear of
the measurement bench, and pull the measurement bench from the rear
of the case.
10.
Remove the screw at the top rear of the partition panel securing the top
of partition panel to the measurement bench, and lower the panel being
careful not to put excessive tension on the cables.
11.
Replace the measurement bench by following previous steps in reverse.
Use the following procedure to replace the pump (see
Figure 7–4
).To
rebuild the pump, see “
Pump Rebuilding
” in the “Preventive Maintenance”
chapter.
Equipment Required:
110V pump or 220V pump
1.
Disconnect the pump power line from the AC power outlet.
Pump Replacement
