ARMY TM 10-4610-309-14
MARINE CORPS TM10802A-14/1
0022 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
OPERATOR INSTRUCTIONS
REVERSE OSMOSIS SYSTEM ACID CLEANING OPERATION UNDER
USUAL CONDITIONS
PRODUCT UTILITY VALVE V-511
CLEAN RETURN VALVE V-702
PRODUCT UTILITY HOSE
RO TANK COVER
CLEAN MIXING VALVE V-703
RO CLEAN FEED VALVE V-701
Figure 8. Valves for RO Acid Cleaning.
8. Drain the RO vessels and RO feed tank as follows:
a. Stop the RO feed pump and set the heater switch to OFF.
b. Close Clean Return Valve V-702.
c. Open valves V-705 and V-706 on Adaptors A-12 and A-16 that are connected together
on the cleaning waste tank (see Figure 6 for valve location).
d. Make sure the A-16 adaptor valve V-706 on the other side of the waste tank is closed.
e. Start the RO feed pump.
1) The cleaning solution is pumped from the tank through the RO and out through
the waste hose.
2) When the low level is reached, the pump stops and the alarm sounds. Silence
the alarm.
f. Open Main RO Feed Tank Drain Valve V-412.
g. When drained, rinse the tank with product water from the distribution system auxiliary
hose.
9. Flush the RO vessels with product water as follows:
a. Close Main RO Feed Tank Drain Valve V-412.
b. Using the distribution system auxiliary hose, fill the RO feed tank to the top of the baffle
plate (90-95% level) with product water from the distribution system.
WARNING
Chemical dust. Wear a protective face shield, chemical gloves, and a dust mask
when handling sodium bisulfite. Avoid inhaling chemical dust or fumes. Failure to
observe this warning may result in mild irritation of the nose, throat, eyes, and
skin.
0022 00-8
