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24-10
AIR COND1TIONING
PUSH BUTTON CONTROL CHART
~
O F F
HEAT
DEFROST
COOL
COOL
*OFF
F R E S H AIR DOOR
OPEN
OPEN
OPEN
CLOSED
CLOSED-
CLOSED
NO VACUUM
HEAT DOOR
OPEN
OPEN
BLEED
CLOSED
CLOSED
OPEN
CLOSED
OPEN
OPEN
CLOSED
SIDE OUTLET DOOR
CLOSED
CLOSED
U P P E R OUTLET
CLOSED
CLOSED
OPEN
OPEN
OPEN
CLOSED
B L O W E R SWITCH POSITION
1 O R
2
1 O R
2
1 O R
2
1 O R 2
3 O R 4
3 O R 4
~
*Fresh Air Door is under no
vocuum
in
this
position. Over-center spring will keep door closed.
hose connection at the engine manifold. Push each
button to test the over-all operation of the electrical
and vacuum controls. The "Push Button Control
Chart'' summarizes the actions that should take place
when each button is pushed.
If all controls operate
in
the proper sequence but
action of dampers and doors is
s l o w
or incomplete,
inspect for mechanical misalignment, binding
or
im-
proper linkage adjustment.
The maximum cool vacuum switch is operated
in
EVAPORATOR SUCTION G A U G E
DISCHARGE PRESSURE G A U G E
COMPRESSOR INLET G A U G E
SUCTION G A U G E VALVE
CENTER MANIFOLD OUTLET
DiaLnnnwC
acn
w
I
~
L
r w n
I
SUCTION LINE
-------
SUCTION SERVICE PORT
SERVICE PORT ADAPTER
COMPRESSOR INLET SERVICE PORT
/
Fig. 1 4 - G a u g e Set Manifold Connections
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