ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
0052 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
REVERSE OSMOSIS SYSTEM
Replace Turbocharger Feed Drain Valve V-303 or Reject Drain Valve V-410 as follows (see Figure 15):
WARNING
The TWPS must be in Shutdown and the TQG and TWPS main breaker must be off
(Army) or the TWPS disconnected from its power source (Marine Corps) prior to
removing or installing Pressure Recovery Turbocharger PRT-1 or the Turbocharger
Feed and Reject Drain Valves V-303 and V-410. Failure to observe this warning can
result in injury or damage to equipment.
1. Make sure the TWPS is in Standby Shutdown With Drain-Down.
2. Remove the turbocharger from the TWPS. Refer to REPLACE and Pressure Recovery
Turbocharger PRT-1.
3. Remove the drain valve as follows:
a. Unscrew the drain tube nut from the front of the valve and remove the plastic drain tube.
b. Unscrew the drain tube nut from the back of the valve and remove the valve from the
metal drain tube.
c. Discard the valve.
VALVE BRACKET
DRAIN TUBE NUT
PLASTIC DRAIN TUBE
METAL DRAIN TUBE
DRAIN TUBE NUT
FEED DRAIN VALVE V-303
REJECT DRAIN VALVE V-410
Figure 15. Turbocharger Feed or Reject Drain Valve V-303 / V-410 Replacement.
4. Install the new drain valve as follows:
a. Wrap antiseizing tape on the valve inlet and outlet threads.
b. Note the proper orientation of the valve (see Figure 15).
c. Screw the drain tube nut on the metal drain tube onto the inlet of the valve.
d. Fit the valve outlet through the opening in the front of the valve bracket and screw the
drain tube nut on the plastic drain tube onto the outlet of the valve.
5. Install the turbocharger assembly onto the TWPS. Refer to REPLACE and Pressure Recovery
Turbocharger PRT-1.
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