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 13. Cold Weather System Troubleshooting Continued.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
9
All hose blankets and pump
Circuit breaker CB207or ground fault
Open PDP and check circuit breaker
heat collars connected to the
breaker 207 tripped.
CB207. Reset as needed. If it trips again,
distribution pump junction
troubleshoot for short circuits or ground
boxes remain cold.
fault. With the Main Circuit breaker OFF,
proceed as follows:
1) Remove P-8 pump junction box
power cable (if in use). Set breaker
to ON and Hose/Pump Heaters
switch to ON. If the heater circuit
breaker does not trip, troubleshoot
the P-8 pump heat trace system for
short circuit or ground fault as
applicable. Isolate fault as follows:
a) Set Pump/Hose Heater switch to
OFF. Reconnect power cable.
Remove all heater cables. Set
switch to ON. If circuit breaker
trips, check to junction box and
the power cable.
b) Connect each of the hose
heaters and the pump heating
collar in turn to identify the failed
heater. For each, set the
Pump/Hose Heater switch to
OFF. Make the connection. Set
the switch to ON. When the
circuit breaker trips, the last
connected heater is the failed
heater.
2) If the heater circuit breaker trips,
troubleshoot the P-7 pump heat trace
system for short circuit or ground fault
as applicable. Isolate fault as follows:
a) Set Pump/Hose Heater switch to
OFF. Reconnect power cable.
Remove all heater cables. Set
switch to ON. If circuit breaker
trips, check to junction box and
the power cable.
b) Connect each of the hose
heaters and the pump heating
collar in turn to identify the failed
heater. For each, set the
Pump/Hose Heater switch to
OFF. Make the connection. Set
the switch to ON. When the
circuit breaker trips, the last
connected heater is the failed
heater.
Open circuit in power cable or connector.
Check for open circuit or corrosion.
Corroded connector.
Repair/replace as needed.
0034 00-48
