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Servicing
Fuse Replacement
Fuse Replacement
7-8
Model 48i Trace Level-Enhanced Instruction Manual
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 the previous steps in
reverse.
Use the following procedure to replace the fuse.
Equipment Required:
Replacement fuses:
250VAC, 3 Amp, SlowBlow (for 100VAC and 110VAC models)
250VAC, 1.60 Amp, SlowBlow (for 220-240VAC models)
1. Turn instrument OFF and unplug the power cord.
2. Remove fuse drawer, located on the AC power connector.
3. If either fuse is blown, replace both fuses.
Thermo Fisher Scientific
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Troubleshooting
