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
4
Raw Water Pump P2 will not
Failure of Raw Water Pump #2 Start
Open OCP display panel to expose the
run. Green Run light does
button or PLC Slot #1 Input card
sub-panel (WP 0060). Set Main CB to ON.
not come on or pump stops
Push and hold raw water pump start.
while operating. Red stop
Check the slot #1 LED lights. If channel 1
push button light is NOT on.
is not ON:
1) Open the slot #1 wire-way cover.
Locate the IN1 terminal. Check for
AC 110-volts between IN1 and
ground while pushing and holding the
start button.
2) If voltage is found, replace the Slot #1
Input card (WP 0060).
3) If voltage is not found, replace the
Raw Water Pump #2 Start button
Failure of PLC Slot #4 Output card or
Open the PDP door and turn the Main
failure of the motor contactor actuating
Circuit Breaker to the ON position
coil failure.
the start button. If the contactor does not
pull in:
1) Open the slot #4 wire-way cover.
Locate the O0 terminal. Check for
AC 110 volts between O0 and ground
while pushing and holding the start
button.
2) If voltage is not found, replace the
Slot #4 output card (WP0060).
3) If voltage is found, replace the
contactor (WP 0063).
Failure of PLC Slot #2 Input card or M501
If the contactor pulls in, find the PLC slot
motor contactor auxiliary relay
#2 card. If channel 8 is OFF:
1) Open the slot #2 wire-way cover.
Locate the IN8 terminal. Check for
AC 110-volts between IN8 and
ground while pushing and holding
the start button.
2) If voltage is found, replace the Slot #2
Input card (WP0060).
3) If voltage is not found, replace the
motor contactor (WP 0063).
5
Raw water pump P-2 was
CB106 motor circuit breaker is tripped.
Open PDP and check CB106 circuit
running, but stops, or fails to
breaker (WP 0011). Reset as needed. If it
start and the RED stop button
trips again, secure the power source and
light is ON.
troubleshoot for short circuits as follows:
1) Remove the pump power cable at
both ends. Check for shorts between
pins in the PDP connector and
ground. If found, use the wiring
diagram to check back along the
shorted wire for the source of the
short.
2) Check for shorts between power
cable connector pins. Replace cable
if found, or notify Direct Support to
inspect and repair the connectors.
0034 00-4
