Buick LeSabre 1965 Service Manual page 803

DEFROSTER Control Lever
HEATER TEMP Control Lever
BLOWER Switch Control
Heater Blower Switch
closed •
\ B L O W E R \ \ O F F | DEFROSTER DE-ICE
Heater Blower Master
Control Switch Closed
Vacuum applied to both
stages of Outside & Recir-
culated Diaphragm
Temperature Door begins
to open
FAN Switch Control
A / C Blower
Switch closed
A / C Blower Switch Closed
Vacuum Modulator completely closed-
O vacuum
Heater Blower Master
Control Switch closed
Vacuum applied to both stages of
Outside & Recirculated Diaphragm
Defroster Door begins to open
HEATER TEMP WARMER
VENT/NORMAL/RECIRC
AIR CONDITIONER COOLER
Defroster Door fully open
-Temperature Door fully open
Applies vacuum to both stages
of Outside & Recirculated Diaphragm
(heater controls off)
Applies vacuum to both stages
of Heater and Air Conditioning
Diaphragm
Closes one half of double contact Circuit
Control switch (blower circuit)
o
>
Same as for VENT except double
contact Circuit Control Switch
completely closed (compressor
actuated)
Same as for NORMAL except vacuum
applied to one stage of outside &
Recirculated Diaphragm
n
O
g
O
Air Conditioning Temperature
Control Lever
(Vacuum Modulator adjusted
for maximum vacuum, 6-7
inches vacuum)
'Vacuum Modulator adjusted
for minimum vacuum, 2 Vi
inches vacuum
Air Conditioner Air
Control Lever
5
n
o
Figure 11-81—Air Conditioner Control Assembly Operation Sequence - 49000 Series
m