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
REPLACE
Circuit Breaker with Auxiliary Switch Replacement:
Parts (TM 10-610-309-24P):
Circuit Breaker, 10 amp 3 pole
Circuit Breaker, 16 amp 3 pole
Circuit Breaker, 63 amp 3 pole
Circuit Breaker, 20 amp 3 pole
Auxiliary Switch
Equipment Condition:
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 circuit breaker with an auxiliary switch 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 Circuit Breaker before replacing.
1. Remove a circuit breaker with an auxiliary switch as follows (see Figure 1):
a. Open the power distribution panel and locate the circuit breaker to be replaced.
b. Remove wire duct covers above and below circuit breaker.
c. Tag the wires attached to the circuit breaker and the attached auxiliary switch.
d. Loosen the 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.
f. Set the circuit breaker to the "Off" position.
g. Remove the two spring clamps that secure the auxiliary switch to the circuit breaker and
retain for reassembly.
h. Carefully separate the auxiliary switch from the circuit breaker and retain for reassembly.
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