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
c.
Insert the pressure vessel adapter with the threaded pipe nipple into the end of the
simulator pipe that has a small hole in it.
d. Insert the other pressure vessel adapter into the other end of the simulator pipe.
e. Slide a simulator assembly into the end of each RO vessel that is closest to the operator
station. It does not matter which end of the simulator is inserted first.
SMALL
HOLE
PRESSURE VESSEL
ADAPTER
O-RING
THREADED PIPE NIPPLE
PERMEATE PORT ADAPTER
RO SIMULATOR
RO VESSEL
Figure 9. RO Element Simulator Installation.
4. Refer to RO ELEMENT REPLACEMENT in this work package and perform the following steps:
a. Install the upstream end cap assembly.
b. Install the downstream end cap assembly following the same procedures used for
installing the upstream end cap assembly.
c. Reinstall the piping that was removed earlier from in front of the RO vessels.
WARNING
Potential for catastrophic failure. Improper assembly or corrosion damage can
result in mechanical failure, property damage and serious injury or death. Perform
the recommended pre-pressurization checks before pressurizing the RO vessels.
Failure to observe this warning can result in severe equipment damage and
serious injury or death.
5. Perform the following pressurization checks:
a. Make sure that a simulator was installed in each vessel.
b. Make sure that the port nut at each end of the vessels is snug.
c. Make sure that the port retainers were correctly installed.
d. Make sure the retaining ring is properly seated in the groove at each end of the vessels.
e. Make sure that all end cap assemblies are in good condition, with no evidence of damage
or corrosion.
f. Make sure that all piping connections will provide a leak-free seal.
g. If you are unable to ensure all of the above checks, or if you do not understand what is
required by any of the checks, do not pressurize the vessels until proper assembly can
be assured. If this means disassembling and reassembling any or all of the vessels to
ensure that maintenance and proper assembly is performed, then disassemble and
reassemble as necessary.
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