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
WARNING
Potential cause of RO vessel failure. When the port nut is tightened, the sealing
plate must sit flush against the bearing plate. If there is any gap between the
sealing plate and bearing plate, the components are not assembled correctly.
Failure to observe this warning can result in severe equipment damage and
serious injury or death.
i.
Thread the port nut (left-hand thread) onto the permeate port. Tighten snug tight.
j.
Reinstall the 3-way valve and piping by screwing the piping into the permeate port nut.
The valve must be installed in the position noted at removal.
11. Reinstall the elements as follows (see Figure 14):
a. Lubricate the inside of the vessel at the ends with a 50/50 glycerin/water mixture to ease
the insertion of the elements and to reduce the chance of scratching the vessel bore.
The mixture can be applied using a swab soaked in the mixture.
CAUTION
Be sure to install the thrust ring in the downstream end of the vessel. Failure to
observe this caution can result in serious damage.
b. Insert a clean thrust ring into the downstream end of the vessel. The thrust ring requires
no orientation; simply push it into the downstream end of the vessel.
c. Insert the end cap assembly, with the first element adapter, into the downstream end of
the vessel as follows:
1) 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.
2) 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.
3) Install the retaining ring into the groove in the vessel.
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