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
MF Caustic Detergent Cleaning
1. Close Adaptor A-12 valve V-705 on the cleaning waste hoses.
2. Prepare water for MF caustic detergent cleaning as follows:
a. Remove the 3-in. hose from the TWPS inlet connection and cap the inlet connection.
b. Be sure RO Feed Tank Drain Valve V-412 is closed (see Figure 11 for valve location).
c. Open Clean Mixing Valve V-703 (see Figure 10 for valve location).
d. Using the distribution system auxiliary hose, fill the RO feed tank to just over 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.
CAUTION
Failure to add sodium bisulfite to the chlorinated product water that is used for
cleaning will result in MF membrane failure.
e. Add one cap of sodium bisulfite from the bisulfite bottle to the RO feed tank while filling
the tank to neutralize the chlorine in the product water.
f. Set the System Mode switch to RO CLEAN.
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 membrane detergent cleaner and caustic are added to the water.
i. Silence any alarms.
j. Set the Tank Heater switch to AUTO 2.
3. Prepare the caustic detergent cleaning solution as follows:
WARNING
Caustic chemical. Wear a protective face shield, chemical gloves, and chemical
apron when handling caustic solution. Contact with caustic will result in severe
chemical burns. Keep water ready when handling. Avoid inhaling chemical fumes.
If caustic spills, immediately flush the area with water from the auxiliary hose.
Failure to observe this warning may result in severe irritation of the nose, throat
and eyes. Contact with skin will result in severe chemical burns if not rinsed
immediately.
NOTE
Rapid pouring of detergent into the tank will cause the detergent to stick to the
tank bottom and not mix. Unmixed detergent may be drawn to the pump and
interrupt pumping.
a. Make sure a bucket of product water is placed in the operator station to rinse any area of
skin or clothing that comes in contact with caustic.
0024 00-15
