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 8. High Pressure Pump, Turbocharger Troubleshooting Continued.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
3
HP Pump P-5 starts, HP
Contactor M504 or 505 Thermal Overload
Shut down to standby. Open the PDP and
cont.
pump P-6 begins to start,
has tripped.
locate contactors M504 and 505. Note
both pumps stop and red stop
which overload is tripped by the small red
push button light comes on.
indicator next to the blue reset button.
Push in the Blue overload reset button (WP
or
HP Pumps will not start, or
Close the PDP and start the pumps again.
stop after running. Red stop
If the failure repeats:
push button light is on
1) Open the PDP. Leave the main CB
(continued).
OFF. Check for loose wires. Check
by pulling on the wire with nose
plyers.
At the top of the contactor
At the bottom of the thermal
overload.
At EMP shunts V122, 123 and
124 for pump P-5 or V125, 126
and 127 for pump P-6.
2) Push the contactor in by hand and
hold. Check for continuity between
the top and bottom connections. If
not found on all legs, replace the
contactor and thermal overload
3) Open the connection box on the
motor and check for loose wires.
4) If the fault is not identified, loosen
the pump/motor coupling halves and
dissengage the couplings from the
rubber driver (WP0053).
If the motor does not turn freely,
replace the motor (WP 0053).
If it does, remove the pump,
dissassemble and inspect for
damage (WP 0053)
5) If no other fault is found, replace the
motor associated with the tripped
overload. (WP0053).
4
One HP Pump will not run or
At first start up, circuit breaker CB122 or
Set CB to On position (black handle up).
stops after running. Green
CB125 manually set to OFF position
Run light is on. Red stop
(black handle down).
push button light is NOT on.
Failure of motor contactor M504 or M505
Open the PDP. Set the Main breaker to
main contacts corroded.
ON. Follow the normal start-up steps up to
starting the HP pumps. Push the High
Pressure Pump start button. Check the
voltage between the contactor output
terminals and ground. If one or more do
not show voltage, replace the contactor
0034 00-28
