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
g. Wait for the RO feed pump to stop, then close MF Clean Feed Valve V-704.
7. Drain #3: Set the Clean switch to Drain #3 to purge the remaining caustic detergent 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.
8. Flush the RO feed tank with product water as follows (see Figure 13 for valve location):
a. Open Main RO Feed Tank Drain Valve V-412 to drain any remaining caustic detergent
cleaning solution from the tank to the waste out hose.
b. Flush the tank with water using the distribution system auxiliary hose to remove residual
cleaning solution.
c. While flushing the RO Feed Tank:
1) 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.
RO FEED TANK
MAIN DRAIN VALVE V-412
RO FEED PUMP
DRAIN VALVE V-211
Figure 13. Valves for Flushing RO Feed Tank.
2) Place the hoses from MF Filtrate Drain Valve V-203 and MF Shell Drain Valve V-
403 into a bucket (see Figure 14 for valve location). Open the valves and drain
the remaining solution into the bucket. Close the valves when draining is
complete.
MF FILTRATE DRAIN VALVE V-203
MF SHELL DRAIN VALVE V-403
Figure 14. MF Filtrate and Shell Drain Valves.
3) When water stops draining from a drain tube, disconnect the tube from its valve
and hold the end up to drain the residual water from the tube. Then reconnect
the tube to its valve. (It is not necessary to perform this step for a drain tube that
is secured to its valve with a hose clamp.)
4) Empty the bucket into the 1500-gallon cleaning waste storage tank.
d. After flushing the RO tank, allow the tank to drain then close RO Tank Drain Valve V-412.
9. Set the MF Clean switch to OFF.
0024 00-18
