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PREVENTIVE MAINTENANCE
PROCEDURE 2 (continued) - PREVENTIVE MAINTENANCE
Exhaust Muffler Canister/Exhaust Muffler
(FIGURE 4)
NOTE: The following should be performed at
20,000 hr. intervals although these procedures
can be performed as needed depending upon
the environment the concentrator is exposed to.
1. Unplug unit.
2. Remove cabinet (Refer to PROCEDURE 1 -
REMOVING CABINET).
3. Remove the ty-wraps that secure 4-way Valve
manifold exhaust tubing to top fittings of muffler
canister (canister).
4. Disconnect the exhaust hoses from fittings on
top of canister.
5. Remove mounting screw(s) from rear of sound
box and remove muffler canister.
6. Unscrew (counterclockwise) the exhaust
muffler located on the muffler canister.
7. Inspect muffler canister for restriction of the
internal filtration and do one of the following:
a). Replace muffler canister and muffler if
plugged or restricted.
b). Install NEW exhaust muffler if canister is in
good condition.
8. Install NEW/re-install existing muffler canister by
reversing STEPS 3-5.
9. Reinstall cabinet (Refer to PROCEDURE 1 -
REMOVING CABINET).
Exhaust Tubing
(From 4-way Valve
Manifold.)
Exhaust Muffler
Canister
Exhaust Muffler
FIGURE 4 - EXHAUST MUFFLER CANISTER/
EXHAUST MUFFLER
Cleaning Finned Heat Exchanger (FIGURE 5)
1. Unplug unit.
2. Remove cabinet (Refer to PROCEDURE 1 -
3. Remove heat exchanger (Refer to PROCE-
4. Remove excessive dirt build-up on heat
5. Reinstall heat exchanger (Refer to PROCE-
6. Reinstall cabinet (Refer to PROCEDURE 1 -
FIGURE 5 - CLEANING FINNED HEAT EXCHANGER
Ty-wraps
Mounting Screw(s)
Rear of
Sound Box
23
REMOVING CABINET).
CAUTION
DO NOT damage fins of heat exchanger when
removing, cleaning, or reinstalling.
DURE 8 - REPLACING HEAT EXCHANGER).
exchanger fins using compressed air.
DURE 8 - REPLACING HEAT EXCHANGER).
REMOVING CABINET).
FINS
PROCEDURE 2
P
R
E
V
M
A
I
N
T
E
N
A
N
C
E
H
E
A
T
E
X
C
H
A
Heat Exchanger
N
Fins (Use
G
Compressed
E
Air to Clean
R
Dirt Buildup).
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