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
CAUTION
Failure to add sodium bisulfite to the chlorinated product water that is used for
cleaning will result in RO membrane failure.
NOTE
Open one of the 12oz sodium bisulfite packets and pour it into the bottle provided
in the BII. The bisulfite powder will be used to neutralize the chlorine in the
product water when product water is required for cleaning.
f.
Add one cap of sodium bisulfite from the sodium bisulfite bottle to the RO feed tank while
filling the tank to neutralize the chlorine in the product water.
g. Reset the RO Feed Tank Low Alarm.
h. Start the RO feed pump. This circulates the solution from the RO feed tank, through the
RO feed pump, through Clean Mixing Valve V-703, and back into the tank to provide
mixing when the citric acid is added to the water. Silence any alarms.
i. Set the Tank Heater Switch to AUTO 2.
6. Prepare the RO acid cleaning solution as follows:
WARNING
Acid chemical. Wear a dust mask, a protective face shield, chemical gloves, and a
chemical apron when handling citric acid. Avoid inhaling chemical fumes. If acid
spills, immediately flush the area with water from the auxiliary hose. Failure to
observe this warning may result in mild irritation of the nose, throat, eyes, and
skin.
NOTE
Rapid pouring of citric acid into the tank will cause the cleaner to stick to the tank
bottom and not mix. Unmixed cleaner may be drawn to the pump and interrupt
pumping.
a. Make sure a bucket of product water is placed in the operator station and also near the
wastewater tanks to rinse any area of skin or clothing that comes in contact with acid
cleaner.
b. Hook the RO feed tank cover open.
c. Open the AC-210 Citric Acid bucket. Use the chemical scoop and VERY SLOWLY pour
the AC-210 Citric Acid into the RO tank to ensure that it is mixed thoroughly with the
water and to avoid splashing chemicals. Repeat until the bucket is empty. Maintain
recirculation.
d. Close the RO feed tank cover.
e. Rinse the scoop and then the chemical gloves with product water in the bucket before
removing.
7. Set valves to recirculate the acid cleaning solution from the RO feed tank, through the RO feed
pump, through the RO elements, and back to the RO feed tank as follows:
0022 00-6
