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 1. Raw Water System Troubleshooting - Continued.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
3
Raw Water Pump P2 will not
At first start up, circuit breaker CB106
Set CB to On position (black handle up)
run or stops after running.
manually set to OFF position (black
Green Run light is on. Red
handle down).
stop push button light is NOT
on.
CB106 ground fault breaker has tripped.
Open the PDP. Locate the raw water pump
If the blue lever is down, push it up to reset.
WARNING
If the breaker trips again, isolate the fault as
follows:
Electrical Safety. The TWPS unit must be
1) Set the Main Circuit Breaker to OFF.
shut down and the Main Circuit Breaker
Remove the power cable at the PDP.
set to OFF prior to disconnecting the
Check and clean the PDP connector
power cable. Failure to observe this
pins. Install the connector cap. Set
warning may result in serious injury or
the Main Circuit Breaker to ON. Push
death.
the Start button. If the breaker trips,
notify Unit Maintenance to 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. 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 M501 motor contactor main
Notify Unit Maintenance.
contacts corroded.
Motor windings have failed.
Notify Unit Maintenance.
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