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
Table 12. Product Water System Troubleshooting Continued.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
3
Distribution Pump P7 will not
CB128 ground fault breaker has tripped
2)
Set the Main Circuit Breaker to OFF.
cont
run or stops after running.
(continued).
Disconnect the power cable at the
Green Run light is on. Red
pump. Reconnect the cable at the
stop push button light is NOT
PDP. Cap the cable connector and
on (continued).
lay the cable end over the pump
frame. Set the Main Circuit Breaker
to ON. Push the start button. If the
breaker trips, the power cable or one
of the connectors is damaged. Notify
unit maintenance. Operation may be
continued using another power cable
if available.
3) Notify unit maintenance for further
troubleshooting if the fault is not
found.
Damaged or corroded power cable
Notify Unit Maintenance
connections.
Damaged pump power cable.
Notify Unit Maintenance.
Corroded pump skid junction box
Notify Unit Maintenance.
connectors, loose wire inside junction box.
Failure of M506 motor contactor main
Notify Unit Maintenance.
contacts corroded.
Motor windings have failed.
Notify Unit Maintenance.
4
Distribution Pump P-7 will not
Failure of Distribution Pump Start button
Notify Unit Maintenance.
run. Green Run light does
or 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 motor contactor M508 actuating
coil.
Failure of PLC Slot #2 Input card or motor
Notify Unit Maintenance.
contactor auxiliary relay.
5
Distribution Pump P-7 was
CB128 motor circuit breaker is tripped.
Open PDP and check circuit breaker
running, but stops and the
CB128 (WP 0011). Reset as needed. If it
RED stop button light is ON.
trips again, notify Unit Maintenance to
troubleshoot for short circuits.
Contactor M506 Thermal Overload has
Shut down to standby. Open the PDP and
tripped.
locate contactor M506 (WP 0011). Push in
the Blue overload reset button.
Close the PDP and start the pump. If noise
is heard, refer to #2 above.
If the failure repeats, check for binding of
the motor or pump. If shaft cannot be
turned freely by hand, remove the hoses
and adaptors. Check for and remove any
debis in the pump. If debris is not found,
notify Unit Maintenance.
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