Technical data

CORRECTIVE MAINTENANCE
CV ELECTRICAL POWER SYSTEM MAINTENANCE MANUAL 2A5A2-ELEC-MM-1-0 13
4.3 Replacing the Ground Fault Monitor
WARNING!
Shock hazard! Verify power to the unit is isolated before performing this
corrective maintenance procedure.
Drawing References
7533009 Power system assembly (2A5A2)
7533010 Power system cable routing
7533011 CV electrical power system schematic (2A5A2)
7533224 Ground fault monitor wiring diagram
7533308 Ground fault monitor modifications and installation
details
Special Tools
None
Spare Parts
B980045057 Ground fault monitor rack – Bender
Preconditions
None
Procedure
1. Follow instructions in Section 6.2, General Notes, regarding hazmat
requirements, torque specifications, inspection of mounting hardware, and use of
Nylok® nuts, as applicable.
2. Perform the following steps in accordance with local requirements for SOC and
tag in/out, as applicable.
3. Disconnect the ground fault monitor (GFM) power cable from the power bar.
4. Disconnect three (3) cables and one (1) earth cable from the back of the unit.
5. Unscrew four (4) screws and pull the GFM tray out of the console.
6. Install the new GFM tray into the console and secure with four (4) screws.
7. Reconnect three (3) cables and one (1) earth cable to the unit.
8. Reconnect the power cable at the power bar and confirm functionality of the
GFM.
9. Return valves and electrical switches to the state that they were in before this
procedure was performed.
10. Inspect and determine disposition of any parts removed. If applicable, dispose of
removed parts and/or fluids in accordance with local requirements.
11. Ensure the preceding steps were performed in accordance with local
requirements for SOC and tag in/out, as applicable.
0.