ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
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TROUBLESHOOTING PROCEDURES
OPERATOR/CREW TROUBLESHOOTING PROCEDURES
THIS SECTION COVERS:
RO System
INITIAL SETUP:
TWPS Operating
Maintenance Level
Operator
RO SYSTEM MALFUNCTIONS
Table 7. General RO System Troubleshooting.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
1
RO Feed Pump P-4 will not
At first start up, circuit breaker CB116
Set CB to On position (black handle up)
run or stops after running.
manually set to OFF position (black
Green Run light is on. Red
handle down).
stop push button light is NOT
on.
Failure of the motor contactor main
Notify Unit Maintenance.
contacts corroded.
Electrical wiring or motor failure.
Notify Unit Maintenance.
2
RO Feed Pump P-4 will not
Failure of RO Feed Pump Start button or
Notify Unit Maintenance.
run. Green Run light does
PLC Slot #1 Input card.
not come on or pump stops
while operating. Red stop
Failure of PLC Slot #4 Output card or
Notify Unit Maintenance.
push button light is NOT on.
failure of the M503 motor contactor
actuating coil failure.
Failure of PLC Slot #2 Input card or M503
Notify Unit Maintenance.
motor contactor auxiliary relay.
3
RO Feed Pump P-4 was
CB116 circuit breaker has tripped.
Open PDP and check CB116 circuit
running, but stops and the
breaker (WP 0011). Reset as needed. If it
RED stop button light is ON.
trips again, notify Unit Maintenance to
check for shorts.
Contactor M503 Thermal Overload has
Shut down to standby. Open the PDP and
tripped.
locate contactor M503. Push in the Blue
overload reset button (WP 0011).
Close the PDP and start the pump. If the
failure repeats, notify Unit Maintenance.
4
RO Feed Pump P-4 leaks
Worn or damaged shaft seal.
Notify Unit Maintenance to replace the seal.
between pump and motor.
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