TM 10-4610-310-14
OPERATOR MAINTENANCE
LIGHTWEIGHT WATER PURIFIER
TROUBLESHOOTING PROCEDURES
ULTRAFILRTRATION MODULE
GENERAL
The table lists the common malfunctions that you may find during the operation or maintenance of the
Lightweight Water Purifier (LWP) Ultrafiltration (UF) module. You should perform the tests/inspections and
corrective actions in the order listed.
MALFUNCTION
TEST / INSPECTION
CORRECTIVE ACTION
Settling tank outlet valve open?
Open ball valve
Booster pump not primed?
Prime (WP 0009 00)
Inspect hoses and connections for
Repair of replace any leaking
good connections, kinks, breaks,
fittings. Remove blockage.
debris, trash
1. No or low flow to UF module
Check settling tank strainer
Clean strainer. (WP 0050 00)
Inspect booster pump.
Ensure booster and backwash
See (WP 0025 00) for
switches in AUTO position.
troubleshooting booster pump.
During inclement weather, inspect
Thaw out LWP.
for ice blockage
2. No power to control module
Troubleshoot 3kW TQG set
See (TM 9-6115-639-13)
Inspect switches
Both booster and backwash
Turn both booster and backwash
switches have to be turned on for
pump switches to ON.
the solenoid valves to operate
properly
Inspect hoses and connections for
Repair of replace any leaking
good connections, kinks, and
fittings. Remove blockage.
blockage
3. Feed pressure too high
Inspect check valve (V38)
Notify unit maintenance. (WP 0085
Remove the check valve and shake
it back and forth to ensure that the
ball is rattling freely.
Inspect check valves (V4 A-C)
Notify unit maintenance. (WP 0085
Ensure that the arrow on the body
of the check valve is in the direction
of the flow.
Inspect flow control valve (FCV 41)
Notify unit maintenance. (WP 0090
for proper orientation and blockage.
0028 00-1
