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)
THIS SECTION COVERS:
MF System
INITIAL SETUP:
TWPS Operating
Maintenance Level
Unit
MF SYSTEM MALFUNCTIONS
Table 3. MF Feed Pump P-3 Troubleshooting.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
1
MF feed pump P-3 does not
At first start up, circuit breaker CB111
Set CB to On position (black handle up)
come on for Fill/Hold, but
manually set to OFF position (black
valve V111 cycles OPEN and
handle down).
green Run light comes on.
Red stop light is NOT on.
CB111 ground fault breaker has tripped
Open the PDP. Locate the MF Feed pump
P-3 CB111ground fault breaker (WP 0011).
WARNING
If the blue lever is down, push it up to reset
isolate the fault as follows:
1) Set the Main Circuit Breaker to OFF.
Electrical Safety. The TWPS unit must
Remove the power cable at the
be shut down and the Main Circuit
PDP. Check and clean the PDP
Breaker set to OFF prior to
connector pins. Install the
disconnecting the power cable. Failure
connector cap. Set the Main Circuit
to observe this warning may result in
Breaker to ON. Perform MF
serious injury or death.
Fill/Hold, then set the Mode to RUN.
Push the Start button. If the breaker
trips, replace the circuit breaker.
2) Set the Main Circuit Breaker to OFF.
Disconnect the power cable at the
pump. Reconnect the cable at the
PDP. Cap the cable connector and
lay the cable end over the pump
frame. Set the Main Circuit Breaker
to ON. Perform MF Fill/Hold, then
set the Mode to RUN. Push the
Start button. Push the start button.
If the breaker trips, clean the cable
connector pins. Repeat the test. If
the breaker trips, replace the cable
or notify Direct Support to inspect
and repair the connectors.
3) Set the Main Circuit Breaker to OFF.
With the power cable connected,
disconnect the cable from the
junction box to the motor. Repeat
the test. If the breaker trips, clean
the junction box connector pins and
the inside of the box. Remove any
deposits and corrosion.
4) Clean motor cable connector pins
and connect to the junction box.
5) If the breaker continues to trip,
replace the motor (WP0051).
0034 00-10
