Procedure 8 - Replacing Heat Exchanger - Invacare 6LXO2 Service Manual

PROCEDURE 8
PROCEDURE 8 - REPLACING HEAT EXCHANGER (FIGURE 1)
H
E
A
TO PREVENT ELECTRICAL SHOCK, ALWAYS DISCONNECT CONCENTRATOR FROM
T ELECTRICAL OUTLET BEFORE SERVICING.
E
1. Unplug unit.
X
2. Remove cabinet (Refer to PROCEDURE 1 - REMOVING CABINET).
C
3. Remove compressor assembly (Refer to PROCEDURE 7 - REPLACING COMPRESSOR ASSEM-
H
BLY OR CAPACITOR).
A
N
NOTE: Concentrator can be laid down to more easily access heat exchanger.
G
4. Cut the four (4) ty-wraps that secure the heat exchanger to the four (4) ty-wrap mounts under the top of
E
the sound box.
R
If applicable, use care not to damage fins of heat exchanger when installing, removing or cleaning.
5. Loosen the adjustable clamps on the compressor output and valve manifold input hoses at the front
and rear of the heat exchanger.
6. Move the heat exchanger out to access the hoses and remove them from the heat exchanger.
7. Remove heat exchanger.
8. Ensure that protective (paper) cover is installed onto the front of finned heat exchanger. If NEW heat
exchanger is being installed, discard protective paper cover.
9. Reverse STEPS 4-6 to install new heat exchanger.
10. Torque adjustable clamps to heat exchanger to 6.5 + 1 inch lbs.
11. Run unit and check for leaks (Refer to PROCEDURE 19 - LEAK TEST).
12. Reinstall cabinet (Refer to PROCEDURE 1 - REMOVING CABINET).
Sound Box
Ty-wraps (4)
Heat Exchanger. NOTE: Fins not
present on all models.
CAUTION
CAUTION
Ty-wrap Mounts (4)
(Removed for Clarity ONLY.
DO NOT REMOVE.)
FINS
Protective (Paper) Cover. NOTE: Protective paper cover not
necessary for unfinned models.
FIGURE 1 - REPLACING HEAT EXCHANGER
44
Adjustable Clamp
Compressor Output Hose
(To Heat Exchanger from
Compressor.)
Valve Manifold Input Hose
Adjustable
(From Heat Exchanger to 4-way
Clamp
Valve Manifold.)
HEAT EXCHANGER