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SECTION 20—4-WAY VALVE
Part No 1110538 75 Platinum™Series
7. Remove the mounting screw(s) that secures exhaust canister assembly to rear of the
sound box. Refer to Replacing the Exhaust Canister/Exhaust Muffler (Platinum 5
Models Manufactured before 7/24/03) on page 29.
8. Remove muffler from exhaust canister by turning counter-clockwise.
9. Loosen the adjustable clamp that secures valve manifold input hose to heat exchanger.
NOTE: When removing the valve manifold input hose from the heat exchanger, use a flat head
screwdriver to pry hose outward while simultaneously pulling the hose outward.
10. Remove valve manifold input hose from end of heat exchanger.
11. Remove the two mounting screws, washers (1 per side) and bushings (2 per side)
securing the 4-way valve/manifold 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 Replacing 4-Way Valve
on
page 73.
14. Remove exhaust canister with hoses from manifold.
15. Loosen the adjustable clamp on valve manifold input hose to bottom center port of
manifold assembly.
16. Remove valve manifold input hose from bottom center port of manifold assembly. Use
screwdriver to pry at connection of tubing at barbed fitting while pulling tubing away
from manifold assembly.
17. Reverse STEPS 13-16 to re-assemble.
18. Slide 4-way valve/manifold assembly complete through the cutout in top of sound box
then install the two mounting screws, washer and four bushings into the manifold to
secure the 4-way valve assembly to the top of sound box.
19. Reverse STEPS 4-10.
20. Reinstall control panel. Refer to Removing Control Panel
on page 62.
21. Plug unit in and turn power on ( ) .
22. Run unit and check for leaks at hose connections. Refer to Leak Test
on page 89.
23. Check for proper system operation. Refer to Typical Product Parameters
on page 9.
24. Re-install cabinet. Refer to Removing Cabinet
on page 25.
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