ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
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TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
REVERSE OSMOSIS SYSTEM
STREET ELBOW
DRAIN VALVE V-211
HOSE
Figure 4. RO Feed Pump P-4 Drain Valve V-211 Replacement.
RO Feed Pump P-4 Electric Motor Replacement:
Parts (TM 10-4610-309-24P):
RO Feed Pump P-4 Electric Motor Assembly
Materials:
Glycerin (BII) (WP 0079, Table 1, item 21)
Solvent (WP 0079, Table 1, item 19)
Clean, dry rags (WP 0079, Table 1, item 33)
Equipment Condition:
TWPS in Standby Shutdown With Drain-Down
Army: Generator off and TWPS main breaker off
Marine Corps: TWPS disconnected from power source
Replace the RO Feed Pump P-4 electric motor as follows:
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 the RO Feed Pump. Failure to observe this warning can
result in injury or death from electrocution or damage to equipment.
1. Make sure the TWPS is in Standby Shutdown With Drain-Down.
2. Remove the pump/motor assembly from the TWPS skid. Refer to REPLACE and RO Feed
Pump P-4 Pump/ Motor Assembly Replacement.
3. Remove the pump from the adapter. Refer to REPAIR and RO Feed Pump P-4 Pump Repair.
4. Remove the four cap screws that hold the adapter to the motor (see Figure 5).
5. Remove the adapter, slinger and splash plate.
WARNING
Two person lift. Two people are required to safely move the motor. Lift with your
legs, not your back. Failure to observe this warning can result in back injury.
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