ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
0063 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
POWER DISTRIBUTION SYSTEM
Replace a GFI module on the power distribution panel as follows:
WARNING
Electrical hazard. Army personnel: make sure that the generator is off and the
TWPS main breaker is off before working on the control panel. Marine Corps
personnel: make sure that the TWPS is disconnected from its power source before
working on the control panel. Failure to observe this warning could result in
serious injury or death from electrical shock.
NOTE
Make sure to obtain the correct type of GFI module before replacing.
1. Remove a GFI module as follows (see Figure 3):
a. Open the power distribution panel and locate the GFI module to be replaced.
b. Remove wire duct covers above and below the GFI module.
c. Tag the wires attached to the GFI module.
d. Loosen the two screw terminal connections and remove the connecting wires.
e. Using a flat-tip screwdriver, insert it into the DIN rail holding clip at the bottom of the
circuit breaker. Gently pry down on the holding clip with the screwdriver to release the
clip from the DIN rail. Then lift up on the breaker and remove it from the DIN rail.
GFI MODULES (6)
POWER DISTRIBUTION PANEL
DIN RAIL HOLDING CLIP
Figure 3. GFI Module Replacement.
0063 00-6
