Invacare 6LXO2 Service Manual page 55

4-WAY VALVE
PROCEDURE 16 - REPLACING 4-WAY VALVE/MANIFOLD ASSEMBLY/PILOT VALVES
TO PREVENT ELECTRICAL SHOCK, ALWAYS DISCONNECT CONCENTRATOR FROM
ELECTRICAL OUTLET BEFORE SERVICING.
Ty-wraps
(STEP 4)
Spade Connectors
(STEP 6)
4-way Valve
(STEP 13)
Muffler Canister
w/Exhaust Hose
(STEP 15)
FIGURE 2 - REPLACING 4-WAY VALVE MANIFOLD ASSEMBLY
11. Remove the two (2) mounting screws, washer and bushings from manifold securing 4-way valve
assembly to top of sound box.
12. The 4-way valve/manifold assembly can be removed from the concentrator by lifting the assembly
straight up through the cutout in the sound box.
13. Remove 4-way valve from manifold assembly. (Refer to PROCEDURE 16 - REPLACING
4-WAY VALVE/MANIFOLD ASSEMBLY) (FIGURE 1).
14. Remove ty-wraps from the muffler canister hoses on the bottom outside fittings of manifold assembly
(Refer to PROCEDURE 2 - PREVENTIVE MAINTENANCE).
15. Remove muffler canister w/hoses from manifold.
16. Loosen the adjustable clamp on output hose to bottom center port of manifold assembly.
17. Remove hose from bottom center port of manifold assembly.
18. Reverse STEPS 13-17 to re-install.
19. Slide 4-way/manifold assembly complete through the cutout in top of sound box then install the two
(2) mounting screws, washer and bushings into the manifold to secure the 4-way valve assembly to
the top of sound box.
20. Reverse STEPS 4-10.
21. Reinstall control panel (Refer to PROCEDURE 9 - REMOVING CONTROL PANEL).
22. Plug unit in and turn power ON.
23. Run unit and check for leaks at hose connections (Refer to PROCEDURE 19 - LEAK TEST).
CAUTION
Sieve Bed Hoses (STEP 5)
Mounting
Screw
Washer
Sound Box
Top
Mounting Detail for Manifold
Assembly (STEP 11)
Adjustable
Clamp
(STEP 16)
Ty-wraps
(STEP 14)
Compressor
Output Hose
(STEP 17)
55
PROCEDURE 16
Bushing
(2) per
Heat Exchanger (Typical)
side
NOTE: NEW Heat Exchanger
does NOT have fins.
4
-
W
A
Y
V
A
L
V
E
Adjustable
Clamp
Valve Manifold
Input Hose
(STEP 9)