TM 10-4610-310-14
OPERATOR MAINTENANCE
LIGHTWEIGHT WATER PURIFIER
TROUBLESHOOTING PROCEDURES
BACKWASH SERVICE PUMP
GENERAL
The table lists the common malfunctions that you may find during the operation or maintenance of the
Lightweight Water Purifier (LWP) service pump (backwash) assembly. You should perform the tests/inspections
and corrective actions in the order listed.
This manual cannot list all malfunctions that may occur, nor all tests or inspections and corrective actions. If a
malfunction is not listed or is not corrected by listed corrective actions, notify your supervisor.
MALFUNCTION
TEST / INSPECTION
CORRECTIVE ACTION
Check for power to the control
If power is not available see WP
module
Replace light bulb (WP 0102 00).
Pump light not coming on at the
Test pump light (WP 0046 00).
Notify unit maintenance
control panel
Reset the motor starter module and
Notify unit maintenance if it trips
all circuit breakers (WP 0046 00).
again
Turn the power off and Inspect the
Tighten all connections. Replace
cable and connections for
cable with a new one if damaged
looseness or damage
Ensure that the generator is working
Inspect current and voltage
properly
outputs (TM 9-6115-639-13)
Isolate the problem to the pump
1. Ensure that the distribution
Pump light is on but pump is not
pump works.
operating or operating below
2. Connect the dist. pump
capacity
cable to the backwash
Notify unit maintenance
See WP 0078 00 for unit level
pump.
troubleshooting.
3. Turn on the dist. pump
switch, if the pump does not
come on check the
electrical connector on the
pump.
Loss of prime
Prime the pump. See WP 0008 00.
Pump operates but produces no
water
Kink or blockage in the hose
Remove blockage or kink
Reapply thread tape. Replace
Tighten connections. Check
Leaks in fittings
damaged fittings. (WP 0110 00).
camlock gasket for damage.
Notify unit maintenance.
END OF WORK PACKAGE
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