ARMY TM 10-4610-309-14
MARINE CORPS TM10802A-14/1
0021 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
OPERATOR INSTRUCTIONS
MICRO-FILTRATION SYSTEM CLEANING OPERATION UNDER
USUAL CONDITIONS
NOTE
When the RO feed tank level reaches the Low Level Switch, the alarm sounds and
the RO feed pump stops.
CAUTION
Failure to close MF Clean Feed Valve V-704 at this point will result in water flow
back into the RO feed tank rather than out as required.
g. Wait for the RO feed pump to stop, then close MF Clean Feed Valve V-704 (see Figure 7
for valve location).
5. Drain #3: Set the MF Clean switch to Drain #3 to purge the remaining acid cleaning solution from
the MF modules with air as follows:
a. A normal air purge drain down cycle automatically sequences.
b. Cleaning solution drains out through the cleaning waste hoses.
c. During the Drain #3 cycle, slightly open MF Clean Feed Valve V-704 for just a moment to
push cleaning solution out of the cleaning bypass piping.
d. The Clean light flashes during operation and turns off when complete.
6. Rinse the MF system with product water as follows:
a. Remove the cap from the MF inlet and reconnect the 3-in. TWPS inlet hose.
b. Set the MF Clean switch to RINSE.
1) This initiates an automatic rinse cycle using product water from the MF feed tank.
The Clean light flashes during this cycle.
2) The MF Feed Pump starts automatically.
3) The MF Feed Pump stops.
4) The Clean Light turns off at the end of the cycle.
c. The cycle ends in STANDBY (the standby light comes on.)
7. End the MF Acid Clean by setting the MF Clean switch to OFF.
WARNING
Acid chemical. Wear a protective face shield, chemical gloves, and a chemical
apron when there is a potential for contact with citric acid solution. 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.
8. Flush the RO feed tank with product water as follows (see Figure 8 for valve location):
a. Open Main RO Feed Tank Drain Valve V-412 to drain the remaining solution.
b. Flush the RO feed tank with water using the distribution system auxiliary hose to remove
residual cleaning solution.
c. While flushing the RO feed tank, place the hose from RO Feed Pump Drain Valve V-211
into a bucket. Open the valve just long enough to flush the pump, then close the valve.
d. Empty the bucket into the 1500-gallon cleaning waste tank.
e. After flushing the RO tank, allow the tank to drain then close RO Tank Drain Valve V-412.
0021 00-11
