Section 10-Check Valves; Replacing Check Valves - Invacare Platinum IRC5LXO2AW Service Manual

SECTION 10—CHECK VALVES
SECTION 10—CHECK VALVES
NOTE: Refer to Recycling Information following local governing ordinances and recycling plans
regarding disposal of the concentrator or components.

Replacing Check Valves

To prevent electrical shock, ALWAYS disconnect concentrator from electrical out-
let before servicing.
NOTE: Replace both check valves when performing this procedure. The check valves are one-way
directional and can be checked by passing air through them. Air should flow in one direction only.
1. Turn power Off (O) and unplug the unit.
2. Remove cabinet. Refer to Removing Cabinet on page 25.
3. Loosen adjustable clamp on product tank, slide clamp down below the adjustable
clamp hanger, and pull product tank forward to access check valve(s).
4. Remove tie-wrap securing lower ¼-inch tubing to the product tank.
5. Remove the tie-wrap (not shown) securing the upper ¼-inch tubing to the barb on the
sieve bed (not shown).
The check valves are one-way directional and MUST be installed correctly. Low
system pressures and eventual bed contamination will result if check valves are not
properly installed.
NOTE: To ensure proper orientation, the "Out" port barb should face to the right side of the sieve
bed when viewing the back of the unit.
6. Position the check valve assembly so the black side to the product tank and the other
end is attached to the sieve bed.
7. Secure the check valve(s) by installing new tie-wraps to the ¼- inch tubing where
previously removed.
NOTE: Ensure check valves are not crossed. Left barb product tank check valve goes to left barb on
sieve bed. Right barb product tank check valve to right barb on sieve bed.
8. Run unit and inspect for leaks. Refer to Leak Test on page 71.
9. If no leaks detected, turn power Off (O) and unplug the unit.
10. Reinstall cabinet. Refer to Removing Cabinet on page 25.
®
Platinum Oxygen
DANGER
WARNING
42
Part No 1118396