ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
0070 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
DIRECT SUPPORT MAINTENANCE PROCEDURES
REVERSE OSMOSIS SYSTEM
3. Remove the MF filtrate pipe section at the right end of the RO feed tank as follows (see Figure 3):
a. Tag and disconnect air tubing from the actuator for valve V-201 and from the positioner
for valve V-202.
b. Unscrew Filtrate Pressure Transmitter PT-102.
c. Loosen the hose clamp on MF Filtrate Sample/Drain Valve V-204. Tag and remove the
hose and clamp. Inspect the hose for damage or deterioration and replace if needed.
d. Remove Filtrate Flow Control Valve and Actuator V-202.
e. Remove the pipe coupling from the MF inlet to the RO feed tank and lift out the elbow
pipe section.
f. Inspect the pipe coupling gasket for damage or deterioration and replace if needed.
g. Unbolt and remove the expansion joint from the bottom of the MF filtrate pipe section.
h. Inspect the expansion joint gasket for damage or deterioration and replace if needed.
i. While one person supports the MF filtrate pipe section, remove Upper Filtrate Outlet
Valve and Actuator V-201.
j. Unclamp the flex strut pipe support in the middle of the MF filtrate pipe section.
k. Lift the MF filtrate pipe section out.
FILTRATE
MF UPPER
PRESSURE
FILTRATE VALVE
V-202 POSITIONER
V-201 ACTUATOR
AND ACTUATOR
PT-102
MF UPPER FILTRATE
OUTLET VALVE
V-201
PIPE
COUPLING
MF FILTRATE PIPE
SECTION
RO FEED TANK
MF FILTRATE
SAMPLE/DRAIN
VALVE V-204
ELBOW PIPE
EXPANSION
JOINT
MF FILTRATE
FLOW CONTROL
VALVE V-202
FLEX STRUT
PIPE SUPPORT
Figure 3. MF-Filtrate-to-RO Feed Tank Pipe Section Removal.
0070 00-4
