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 3. MF Feed Pump P-3 Troubleshooting Continued.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
6
MF Feed Pump was running,
Contactor M502 Thermal Overload has
Shut down to standby. Open the PDP and
(cont.)
but stops and the RED stop
tripped.
locate contactor M502. Push in the Blue
button light is ON (continued).
overload reset button (WP 0063).
Close the PDP, complete normal startup.
If the failure repeats,
1) Check for binding of the motor or
pump.
If shaft cannot be turned freely by
hand, remove the pump from the
motor. If the motor shaft will not
turn, replace the motor. If the
motor shaft turns, complete the
dissassembly of the pump, clean
the pump, and replace worn
parts. After assembly, be sure
that the motor shaft turns freely
If the pump turns freely, check for
loose wires.
2) Open the PDP. Check for loose
wires
At the top of the contactor
At the bottom of the thermal
overload.
At EMP: shunts V111, 112 and
113.
Contactor M502 Thermal Overload has
3)
Push the contactor in by hand and
tripped (continued).
hold. Check for continuity between
the top and bottom connections. If
not found on all legs, replace the
contactor and thermal overload (WP
4)
Open the connection box on the
motor and check for loose wires.
5)
Open the junction box on the pump
skid and check for loose wires.
6)
If the fault is not identified, replace
the motor (WP0051).
7
MF Feed Pump P-3 leaks
Worn or damaged shaft seal.
Replace shaft seal (WP 0051).
water along the shaft.
8
MF Feed Pump P-3 runs
Worn motor bearings.
Replace motor (WP 0051).
noisy or rough.
0034 00-14
