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
RO VESSEL REPAIR:
Parts (TM 10-4610-309-24P):
Feed Port Seal O-rings
Permeate Port Seal O-rings
End Cap Seal
Adapter Seal O-rings
PWT Seal O-rings
RO Element Inter-connector O-rings
Materials:
Pad, scouring (WP 0079, Table 1, item 31)
Mild soap solution
Glycerin (BII) (WP 0079, Table 1, item 21)
Clean water
Corrosion preventive compound (BII) (WP 0079, Table 1, item 17)
Tape, antiseizing (BII) (WP 0079, Table 1, item 43, 44)
Clean, dry, lint-free rags (WP 0079, Table 1, item 33)
Equipment Condition:
TWPS in Standby Shutdown with Drain-Down or Short-Term Shut-Down
Army TWPS: Generator off and TWPS main breaker off
Marine Corps TWPS: TWPS disconnected from power source
If the TWPS is showing high product water TDS (conductivity), the most likely cause is RO vessel O-ring
leakage, especially with newly installed elements. Replace feed and permeate port seal O-rings, the end
cap seal, adapter seal O-rings, PWT seal O-rings, and element inter-connector O-rings as follows:
WARNING
The TWPS must be in Shutdown and the TQG and TWPS main breaker must be off
(Army) or the TWPS disconnected from its power source (Marine Corps) prior to
repairing an RO vessel. Failure to observe this warning can result in injury or
death from electrocution or damage to equipment.
High pressure. The RO Vessels and RO system may be pressurized up to 1200
psig. The TWPS must be drained down to relieve RO system pressure prior to
working on any part of the system. Failure to observe this warning can result in an
explosive release of parts that can cause injury or death to personnel and damage
to equipment.
1. Make sure the TWPS is in Standby Shutdown with Drain-Down. Refer to WP 0017.
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