ARMY TM 10-4610-309-14
MARINE CORPS TM10802A-14/1
0024 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
OPERATOR INSTRUCTIONS
MICRO-FILTRATION SYSTEM CLEANING WITH REVERSE OSMOSIS
SYSTEM ACID CLEANING OPERATION UNDER USUAL CONDITIONS
WARNING
Chemical dust. Wear a dust mask, a protective face shield, and chemical gloves
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.
CAUTION
Failure to add sodium bisulfite to the chlorinated product water that is used for
cleaning will result in MF membrane failure.
k.
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.
l. Set the System Mode switch to RO CLEAN.
m. Reset the RO Feed Tank Low Alarm.
n. 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.
o. Set the Tank Heater Switch to AUTO 2.
3. Prepare the 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.
a. Make sure a bucket of product water is placed in the operator station and also near the
wastewater tanks to rinse any 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.
MF Drain
After preparing the acid cleaning solution, check that the MF Backwash light is off indicating that the 2nd
backwash is done. Then continue as follows:
1. Drain Down #1: Drain the water from the MF modules as follows:
a. Stop the RO feed pump.
b. Set the Tank Heater Switch to OFF.
0024 00-6
