ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
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TACTICAL WATER PURIFICATION SYSTEM (TWPS)
OPERATOR MAINTENANCE PROCEDURES
REVERSE OSMOSIS SYSTEM
h. Push both elements into the vessel until only a few in. of the second element are left
sticking out of the vessel.
i. Install an adapter to the element permeate (product water) tube at the upstream end of
the vessel.
j. Push the elements into the vessel as far as they will go.
7. Install the upstream end cap assembly as follows (see Figure 8):
a. Apply glycerin inside the vessel from behind the retaining ring groove to about one-half
in. into the vessel.
b. Cover the entire end cap seal with a thin layer of glycerin. Make sure no dirt
contaminates the glycerin.
c. Align the orientation mark that you put on the end cap assembly during removal with the
orientation mark that you put on the vessel.
CAUTION
Do not rotate the end cap assembly after inserting it into the vessel. Failure to
observe this caution may cause the end cap seal to bind or become detached.
d. Hold the end cap assembly square to the axis of the vessel and slide it straight into the
vessel until a slight resistance is felt.
e. Using both hands, push the end cap in as far as it will go (a forceful thrust may be
needed to push the end cap seal into the vessel bore.) When the end cap is in the
correct position, the entire retaining ring groove will be exposed.
RO VESSEL
FEED/REJECT PORT
ORIENTATION LINE
END CAP
END CAP SEAL
RETAINING RING GROOVE
RETAINING RING
Figure 8. RO Vessel End Cap and Retaining Ring Installation.
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