ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
0034 00
TROUBLESHOOTING PROCEDURES
UNIT TROUBLESHOOTING PROCEDURES TACTICAL WATER
PURIFICATION SYSTEM (TWPS)
Table 1. Raw Water System Troubleshooting - Continued.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
5
Raw water pump P-2 was
CB106 motor circuit breaker is tripped
3)
Disconnect the cable between the
cont.
running, but stops, or fails to
(continued).
motor and the junction box. Check
start and the RED stop
for shorts between pump junction box
button light is ON
connector pins. If found, repair the
(continued).
junction box.
4)
Check the motor cable connector
pins for shorts. If found, disconnect
the cable from the motor wires and
check the pins again. If a short is
found, replace the cable.
5)
Check the motor wires for shorts. If
found, replace the motor (WP0048).
6)
If no shorts are found, replace the
circuit breaker (WP0063).
Contactor M501 Thermal Overload has
Shut down to standby. Open the PDP and
tripped.
locate contactor M501 (WP 0011). Push in
the Blue overload reset button.
Close the PDP and start the pump. If noise
is heard from the pump, refer to #2 above.
If the failure repeats,
1) Check for binding of the motor or
pump.
If shaft cannot be turned freely by
hand, remove the pump from the
motor. If the motor shaft will not
turn, replace the motor. If the
motor shaft turns, complete the
dissassembly of the pump, clean
the pump, and replace worn
parts. After assembly, be sure
that the motor shaft turns freely
If the shaft turns freely, check for
loose wires.
2) Open the PDP. Leave the main
breaker off. Check for loose wires:
At the top of the contactor
At the bottom of the thermal
overload.
At EMP shunts V106, 107 and
108.
3) Push the contactor in by hand.
Check for continuity between the top
and bottom connections. If not found
on all legs, replace the contactor and
thermal overload (WP 0063)
4) Open the connection box on the
motor and check for loose wires.
5) Open the junction box on the pump
skid and check for loose wires.
6) If the fault is not identified, replace
the motor.
0034 00-5
