CONDENSER AIR DISCHARGE LOUVER AND LINKAGE.

TM5-4120-384-14

4-17. CONDENSER AIR DISCHARGE LOUVER AND LINKAGE.

This louver is located at the right rear of the unit and is

automatically operated by a refrigerant pressure actuated cylinder

and connecting linkage.

The louvers open as refrigerant pressure

in the condenser coil increases.

This causes the louver to open

more fully to increase the flow of cooler air across the condenser

coil.

(See fig. 4-13.)

Clean/Inspect.

(1)

Disconnect

power

source.

(2) (Models F18H-3S and F18H-1S)

Remove top rear cover (para

4-11).

(Models F18H-3SA and F18H-3SB) Remove top cover (para

4-11) and condenser air inlet guard (para 4-12).

(3) The louver can be cleaned with a

soft

brush

washed

with

water and a mild detergent solution.

(4) Check louver for bent blades,

missing

damaged

gaskets,

and

missing hardware or bearings.

(5)

Clean

linkage

with

soft

brush

and

damp

rag.

(6)

Check

louver

linkage

for

tightness

and

smooth operation.

Adjustment.

DANGEROUS C H E M I C A L i s u s e d i n t h i s e q u i p m e n t .

DEATH

severe

injury may result if personnel

fail

observe safety precautions.

Do not attempt to loosen or remove any o f

the

connections to the copper tubing.

Use great care to avoid contact with liquid refrig-

erant or refrigerant gas being discharged under

pressure.

Sudden and irreversible tissue damage can

result from freezing.

(1) Turn air conditioner off and wait four hours or until air

conditioner is uniform at an ambient temperature of less than 80F

(27C).

(2) Loosen two nuts

securing

actuating

cylinder

mounting

bracket (fig. 5-14).

4-49

Change 2