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
RO Feed Tank Cover Hinge Repair:
Parts (TM 10-4610-309-24P):
Nylon Liftoff Hinge
Equipment Condition:
TWPS in Standby Shutdown Without Draining Down
Replace a nylon liftoff hinge on the RO feed tank cover as follows (see Figure 19):
WARNING
High velocity discharge hazard. The blow back step of the automatic MF backwash
operation results in a sudden and very high velocity surge in the RO feed tank.
There is no risk of injury from this surge while working on the RO feed tank cover.
However, the suddenness of the surge and the noise accompanying it may startle
the worker into a reflexive reaction that could result in injury. Therefore, the TWPS
must be in Shutdown prior to working on the RO feed tank cover. Failure to
observe this warning can result in injury.
CAUTION
Do not allow the screws, lock washers, or nuts to fall into the RO feed tank. Pump
inlet strainer S-3 will not prevent this mounting hardware from entering the pump.
Failure to observe this caution can result in severe damage to and the failure of the
RO feed pump if the hardware is sucked into the pump.
1.
Remove the four screws, lock washers, and nuts from the hinge to be replaced.
2.
Lift off the hinge.
3.
Place the new hinge on the RO feed tank and feed tank cover.
4.
Secure the new hinge using the four screws, lock washers, and nuts.
SCREW
RO FEED TANK COVER
LOCK WASHER
NUT
SCREW
HINGE
LOCK WASHER
NUT
Figure 19. RO Feed Tank Cover Hinge Replacement.
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