2-71. R.O. PRESSURE TUBES REPAIR.
This task consists of:
General Mechanics Tool Kit (Appendix B, Section III, Item 4)
Grease, Silicone (Appendix C, Section II, Item 10)
Rags, Wiping (Appendix C, Section II, Item 14)
Solvent, Drycleaning (Appendix C, Section II, Item 18)
Adhesive (Appendix C, Section II, Item 2)
Gaskets and Preformed Packing
RO Feed Water Lines disconnected (TM 10-4610-241-10).
RO Elements removed (TM 10-4610-241-10).
ROWPU Piping drained (TM 10-4610-241-10).
General Safety Instructions
ROWPU piping and equipment can contain extremely high pressure during and after
operation. If this pressure is not relieved before performing maintenance, serious injury
or death may result. Be sure to open all drains and vents before performing maintenance.
There are four R.O. pressure tubes. All are removed the same. One is shown, the
others are similar.
Tiedown clamps on models WPES-20, H-9518-2, WPES-30, and H-9518-3 are
different from models WPES-10 and H-9518-1 and require different installation
hardware. Steps 1 thru 3 describe Models WPES-10 and H-9518-1 while step 4
pertains only to models WPES-20, H-9518-2, WPES-30, and H-9518-3. The
remainder of the procedure is the same for all models.
On models WPES - 10 and H-9518-1, remove one nut (1), lockwasher (2), and flat washer (3) from each
On models WPES - 10 and H-9518-1, remove one nut (4), lockwasher (5), and screw (6) front each clamp
2-276 Change 1