ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
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TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
POWER DISTRIBUTION SYSTEM
2. Install a new GFI module as follows:
a. Position the new GFI module on the DIN rail and carefully press the GFI module in place.
b. Attach the wires to the screw connections in accordance to the wire tags.
c. Tighten the screw connections to secure the wires.
d. Remove the wire tags if necessary.
e. Reinstall the wire duct covers.
f. Close the power distribution panel.
Contactor/Overload Relay / Surge Suppressor Replacement:
Parts (TM 10-610-309-24P):
Contactor, 3 pole, 5 HP
Contactor, 3 pole, 7 1/2 HP
Contactor, 3 pole, 20 HP
Overload Relay, Adjustable, 28 - 42 amp
Overload Relay, Adjustable, 4.5 - 6.5 amp
Overload Relay, Adjustable, 10 - 14 amp
Overload Relay, Adjustable, 6 - 8.5 amp
Surge Suppressor, 120vac
Equipment Conduction:
TWPS in Standby Shutdown Without Draining Down
Army TWPS: Generator off and TWPS main breaker off
Marine Corps TWPS: TWPS disconnected from power source
Replace a contactor/overload relay/suppressor assembly 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 contactor/overload relay/suppressor before
replacing.
1. Remove a contactor/overload relay/suppressor assembly as follows (see Figure 4):
a. Open the power distribution panel and locate the contactor assembly to be replaced.
b. Tag the wires attached to the contactor assembly.
c. Loosen the screw terminal connections and remove the connecting wires.
d. Loosen the three terminal screws connecting the overload relay to the contactor.
Separate the overload relay from the contactor.
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