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
4
One HP Pump will not run or
Electrical wiring or motor failure.
Set the Main Circuit Breaker to OFF. Open
cont.
stops after running. Green
the motor terminal box and remove the
Run light is on. Red stop
insulators from the wire connections. With
push button light is NOT on
the wires spread apart, set the Main Circuit
(continued).
Breaker to ON. Follow the normal start-up
steps up to starting the HP pumps. Push
the HP Pump Start button. Measure the
voltage from each phase wire to ground.
1) If voltage is found at all three, replace
the motor (WP 0053).
2) If voltage is not found at a wire,
troubleshoot the wire run for the
location of the open circuit.
5
Operating RO Feed Flow less
Worn HP Pump valves.
Replace valves (WP 0053).
than 52 gpm but over 48
gpm.
Worn HP Pump pistons and or seals.
Replace pistons and seals (WP 0053).
6
Operating RO Feed Flow less
Failed reject flow sensor FE-401 or
See instrument troubleshooting (WP 0035).
than 48 gpm.
transmitter FT-401.
Failed product flow sensor FE-501 or
transmitter FT-501.
7
RO Feed Pressure and
Failed Turbocharger thrust bearing,
Check HP pump discharge pressure PI-
product flow are low even
turbocharger not rotating.
301. If this pressure is significantly higher
with Main Pressure Control
than the RO Feed Pressure, the
Valve V401 closed.
turbocharger bearing has failed. Replace
the bearing and rotor (WP 0052).
8
HP Pumps Run Rough,
Worn valves.
Replace HPP valves (WP 0053).
increased pulsation.
Worn pistons and/or seals.
Replace HPP pistons and seals (WP 0053
2000 Hour High Pressure Pump PMCS).
9
Leakage from HP pump body
Worn O-rings.
Replace HPP defective O-rings (WP 0053
segment.
2000 Hour High Pressure Pump PMCS).
10
Excessive leakage from the
Worn shaft seal or damaged cam
Replace worn HPP shaft seal and/or cam
HP pump/motor adapter drain
surfaces.
tubing.
PMCS).
11
HP pump relief valve RV-301
Failed turbocharger thrust bearing,
Check HP pump discharge pressure PI-
is relieving or leaking.
turbocharger not rotating.
301. If this pressure is significantly higher
than the RO feed pressure, the
turbocharger bearing has failed. Replace
the bearing and rotor (WP 0052).
Relief valve out of adjustment or leaking
Replace.
seat.
0034 00-29
