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
f.
Push the grooved coupling gasket back into place. Install and partly tighten the coupling.
g.
Tighten the sanitary clamp and then the grooved coupling.
h.
Make sure Drain Valve V-213 is closed.
i.
Open HP Pump Inlet Valve V-212.
HP Pump Relief Valve RV-301 and RO Feed Relief Valve RV-302 Replacement:
Parts (TM 10-4610-309-24P):
HP Pump Relief Valve RV-301
RO Feed Relief Valve RV-302
Material:
Tape, antiseizing (WP 0079, Table 1, item 43)
Equipment Condition:
TWPS in Standby Shutdown With Drain-Down
Army: TWPS main breaker off
Marine Corps: TWPS disconnected from power source
Replace HP Pump Relief Valve RV-301 or RO Feed Relief Valve RV-302 as follows (see Figure 7):
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 Relief Valve RV-301 or RV-302. 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.
Unthread the nipple, elbow, and the relief valve assembly from its pipe.
3.
Remove the nipple and elbow from the relief valve.
4.
Clean off any tape residue remaining on the threads of the nipple.
5.
Wrap antiseizing tape on the nipple threads and screw the nipple and elbow assembly into the
new relief valve.
6. Wrap antiseizing tape on the new valve threads and screw the valve assembly into the pipe.
7. Make sure that the open end of the elbow is positioned as shown in Figure 7.
RELIEF VALVE
ELBOW
NIPPLE
Figure 7. HP Pump Relief Valve RV-301 and RO Feed Relief Valve RV-302 Replacement.
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