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 12. Product Water System Troubleshooting Continued.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
4
Distribution Pump P-7 will not
Failure of PLC Slot #4 Output card or
Open the PDP door and turn the Main
cont.
run. Green Run light does
failure of motor contactor M506 actuating
Circuit Breaker to the ON position. Locate
not come on or pump stops
coil.
the contactor and push and hold the
while operating. Red stop
distribution pump start button. If the
push button light is NOT on
contactor does not pull in:
(continued).
1) Open the Slot #4 wire-way cover.
Locate the O5 terminal. Check for
AC 110 volts between O5 and
ground.
2) If voltage is not found, replace the
Slot #4 output card (WP 0060).
3) If voltage is found, replace the
contactor (WP 0059).
Failure of PLC Slot #2 Input card or motor
If the contactor pulls in, find the PLC Slot
contactor auxiliary relay.
#2 card. If channel 13 is OFF:
1) Open the Slot #2 wire-way cover.
Locate the IN13 terminal. Check for
AC 110-volts between IN13 and
ground while pushing and holding the
start button.
2) If voltage is found, replace the Slot #2
Input card (WP 0060).
3) If voltage is not found, replace the
motor contactor (WP 0063).
5
Distribution pump P-7 was
CB128 motor circuit breaker is tripped.
Open PDP and check circuit breaker
running, but stops, or fails to
CB128 (WP 0011). Reset as needed. If it
start and the RED stop button
trips again, troubleshoot for short circuits.
light is ON.
With the power source secured proceed as
follows:
1) Remove the pump power cable at
both ends. Check for shorts between
pins in the PDP connector. If found,
refer to PDP troubleshooting.
2) Check for shorts between power
cable connector pins. Replace cable
if found.
3) Disconnect the cable between the
motor and the junction box. Check
for shorts between pump junction box
connector pins. If found, repair the
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 (WP 0058).
6) If no shorts are found, replace the
circuit breaker (WP 0063).
0034 00-42
