TM 10-4610-310-14
OPERATOR MAINTENANCE
LIGHTWEIGHT WATER PURIFIER
CPVC PIPING REPAIR
INITIAL SETUP
Materials/Parts
General Safety Instructions
Pipe repair kit. (NSN 4730-01-301-3687)
Observe all WARNINGS and CAUTIONS
Tools
Tool Kit, LWP (3600486000)
GENERAL
This work package contains information and instructions for repairing cracked or punctured Chlorinated Polyvinyl
Chloride (CPVC) piping on the Ultrafiltration (UF) module, Reverse Osmosis (RO) element module, or chemical
injection/cleaning module of the Lightweight Water Purifier (LWP).
REPAIR INSTRUCTIONS
CAUTION
Read all directions before applying plug and bandage kit. Do not open aluminum packet until
pipe surface has been cleaned, roughened, and plugged with epoxy putty. Repair tape must
be pulled tight while applying.
1. Shut off module and drain.
2. Clean the damaged area on the CPVC pipe. Roughen pipe surface with sand paper.
WARNING
Use protective gloves for remaining steps in the instruction. Personal injury may result.
3.
Putty should be kneaded together for about 2 minutes until evenly combined and uniform dark gray in color.
4. Open aluminum packet. Immerse bandage in cool water for 10 seconds.
NOTE
Work quickly from now as the resin is activated. Wrap must be completed within 3 to 5 minutes before pipe
bandage begins to set. Do not try to cut or use a partial roll. Use the whole roll. Discard the plastic tube at the
end of the roll.
5. Squeeze bandage lightly three to four times while immersed in clean water to activate hardening resin.
6. Place the kneaded putty 3-4 inches from one end of the bandage roll and press through it.
7. Position the putty over the leaking hole.
8. Wrap bandage around the pipe. Cover the prepared area and leak.
9. Keep bandage stretched tightly to achieve a firm wrap.
WARNING
As the product hardens, heat and foam are generated. Uncured polyurethane resin may cause
skin irritation. Avoid eye and skin contact. Injury to personnel may result.
10. Apply layers of bandage quickly. Pull and smooth layers to produce the strongest bond and hardest finish.
11. Grip and smooth with twisting motion around the pipe in direction of wrap.
12. Allow 30 minutes for bandage to cure before pressurizing pipe.
END OF WORK PACKAGE
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