M4000 Insulation Analyzer User Guide
72A-1230 Rev. F 4-89
July 22, 2005
Figure 4.50 Main Reference Assembly, Screw Locations
5. Release the three connectors on cables W2, W3 and W4 (which lead to the
Amplifier Assembly) by grasping them and pulling the cables away from
the Transformer. Move other cables out of the way as necessary to clear a
path for lifting out the Transformer.
6. Remove the Nomex insulator shield located between the Transformer and
the Amplifier Assembly. Simply grasp the shield and pull it out.
7. With two people, one on each side, lift the Transformer straight up and
remove it from the Instrument.
WARNING The Transformer is heavy. Two persons are required to safely lift it out of
the instrument. This step is best accomplished with the M4100 relocated
to the floor.
8. Unpack the new Transformer. Again using two people, place the new
Transformer into position in the instrument.
9. Replace the Nomex insulator shield by sliding it in between the
Transformer and the Amplifier Assembly.
10. Reconnect the three cables.
11. Replace the four screws, near where the Main Reference Assembly
attaches to the Transformer, using a Phillips-head screwdriver.
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Screws
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