ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
0033 00
TROUBLESHOOTING PROCEDURES
OPERATOR/CREW TROUBLESHOOTING PROCEDURES
THIS SECTION COVERS:
Raw Water System
INITIAL SETUP:
TWPS Set Up
Maintenance Level
Operator
RAW WATER SYSTEM MALFUNCTIONS
Table 1. Raw Water System Troubleshooting.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
1
Raw Water Pump P1 or P2 (if
Startup:
deployed as the only raw
Missing suction hose coupling gasket.
water pump) is rotating but is
Check all couplings that are out of water for
not pumping water.
coupling gasket. Install gasket in any
couplings that are missing a gasket.
Loss of prime.
Open vent valve until primed again. Add
water if needed.
During operation:
Water intake out of water and sucking air.
Reset intake under water.
Clogged floating inlet strainer.
Pull in, clean, redeploy.
Pump (suction lift) is more than 23 feet
Reconfigure pump closer to water source.
above the raw water.
Check valve not closing tightly.
Stop engine. Remove suction hose and
Adaptor A-01 from pump. Inspect check
valve V-101 valve seat. Remove any
material preventing tight closure.
Leaking shaft seal assembly.
With pump stopped and primed, look for
leakage at the back of the pump. Notify
Unit Maintenance to replace pump seal
assembly if leak found.
Worn pump impeller or wear plate.
If only one pump is in use, substitute the
other pump. If both pumps are in use,
interchange P-7 for P-2 (WP 0016) or P-8
for P-1 (A-TWPS only) to allow continued
operation. Notify Unit Maintenance to
adjust clearance between the impeller and
the wear plate or replace if worn.
2
Raw Water Pump P1 or P2
Noise is at the pump: shaft clamp is loose,
Notify Unit Maintenance to check clearance
runs noisy or rough.
impeller is rubbing on wear plate.
between impeller and wear plate and adjust
as needed.
P-2 only:
Noise is at the motor: worn bearings.
Notify Unit Maintenance to replace the
motor.
0033 00-2
