ARMY TM 10-4610-309-14
MARINE CORPS TM10802A-14/1
0036 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
OPERATOR MAINTENANCE PROCEDURES
SERVICE UPON RECEIPT
2. Remove the end cap from the vessel (see Figure 2).
CAUTION
Avoid hitting or levering against the vessel or applying undue force when
removing the retaining ring and the end cap. Failure to observe this caution may
damage the vessel that could lead to a catastrophic failure.
NOTE
Before removing the end cap a line must be marked from the end cap to the RO
vessel. The line will be used to align the end cap with the vessel when the end cap
is reinserted in the vessel. The end cap must be inserted so that the raw water
pipes can be connected to it without having to rotate the end cap.
a. Using a grease pencil or other marker, draw a single orientation line from the end cap to
the vessel.
b. Lift the end of the retaining ring up and out of the stainless steel groove.
c. After starting the ring out of the groove, ease it out.
d. Grasp the 3-way valve and pull the end cap straight out.
NOTE
A sharp forceful tug may be needed to start the end cap assembly moving. It may
be helpful to rock the end cap slightly to break the end cap seal bond.
e. If the end cap seal remains in the vessel bore after the end cap is removed, remove the
end cap seal.
f. Repeat the end cap removal steps for the end cap at the other end of the vessel.
RO VESSEL
FEED/REJECT PORT
END CAP
ORIENTATION LINE
RETAINING RING
END CAP SEAL
Figure 2. RO Vessel End Cap Removal.
0036 00-6
