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)
THIS SECTION COVERS:
Raw Water System
INITIAL SETUP:
TWPS Set Up
Maintenance Level
Unit
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. Replace
pump seal assembly if leak found
Worn pump impeller or wear plate
Adjust clearance between the impeller and
the wear plate (WP 0048). If severely worn,
replace impeller and wear plate.
2
Raw Water Pump P1 or P2
Noise is at the pump: shaft clamp is loose,
Check clearance between impeller and
runs noisy or rough.
impeller is rubbing on wear plate
wear plate. Adjust as needed. Be sure
shaft clamp is tight (WP 0048).
P-2 only:
Noise is at the motor: worn bearings.
Replace the motor (WP 0048).
3
Raw Water Pump P2 will not
At first start up, circuit breaker CB106
Set CB to On position (black handle up).
run or stops after running.
manually set to OFF position (black
Green Run light is on. Red
handle down).
stop push button light is NOT
on.
0034 00-2
