ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
0003 00
DESCRIPTION AND THEORY OF OPERATION
THEORY OF OPERATION
Cleaning of the MF is summarized below (see Figure 30):
1. Install 2 x 10, red-banded, cleaning waste hoses with Adaptor A-10 Cleaning Waste Outlet Valve
V-705 closed (see Figure 29) and cleaning waste tank with Adaptors A-16 shut-off valves V-706
closed.
2. Mixing the cleaning solution.
a. The RO feed tank is partially filled with product water.
b. HP Pump Feed Valve V-212 is closed and Clean Mixing Valve V-703 is opened.
c. With the RO feed pump on, the water circulates from the RO tank and back in again
through the mixing valve. The membrane cleaner is slowly added through the open tank
cover and mixes with the water as the solution circulates.
3. Circulation and rinse.
a. Clean Mixing Valve V-703 is closed. MF Clean Feed Valve V-704 and Clean Return
Valve V-702 are opened. This directs the circulation through the MF assembly and back
through the waste out piping and the Clean Return Valve V-702 to the RO feed tank.
b. When cleaning is complete, Cleaning Waste Outlet Valve V-705 and the Shut-Off Valve
V-706 next to V-705 are opened to direct the cleaning waste to the cleaning waste tank.
c. The element fibers are rinsed with product water that is added to the RO feed tank. The
rinse water is directed to the cleaning waste tank.
CLEAN RETURN VALVE V-702
RO FEED TANK
MF ASSEMBLY
MF CLEAN FEED VALVE V-704
CLEAN MIXING
VALVE V-703
HPP FEED
RO CLEAN FEED
VALVE V-212
VALVE V-701
RO FEED PUMP
TO CLEANING WASTE OUTLET
WASTE OUT PIPING
VALVE V-705 (OFF THE TWPS)
Figure 30. MF Cleaning Operation.
0003 00-33
