Plymouth Gran Fury 1980 Operating Instructions And Product Information page 26

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AIR CONDITIONER (Optional on some models)
This factory installed unit combines air conditioning, ventila-
tion, heating, and defrosting into one efficient year-round sys-
tem. The operating controls consist of:
Temperature Control Lever
This lever controls the temperature of the air coming from the
outlets when any button except OFF or MAX NC is depressed.
Moving the lever to the right makes the air warmer.
Fan Switch
The fan can be operated at four speeds, ranging from LO at the
bottom, to HI at the top, to regulate the amount of air forced
through the car. Only the top two positions affect airflow when
the MAX A IC button is depressed.
Pushbuttons
These buttons determine the operating mode of the system. The
three A/C buttons provide five modes of operation.
OFF - When this button is pushed, the entire system is shut off.
MAX A/C - Air from inside the car is recirculated through the
system and discharged through the NC outlets. This mode of
operation should only be used to rapidly cool down the car
interior and in exceptionally hot and h umid weather. The tem-
perature control lever should be placed in the full cool position for
best results.
NORM (A/C & VENT) - When this button is depressed the air
conditioning system is on. Air from outside the car is circulated
through the system and discharged through the
NC
outlets. The
temperature control lever and fan speed can be adjusted to obtain
comfort. When this button is depressed, then pulled fully back,
the air conditioning system is off. Air continues to be discharged
from the N C outlets in this ventilation mode. The temperature
control lever and fan speed can still be adjusted for comfort.
BI-LEVEL (NC & VENT)- When this button is depressed the air
conditioning system is on. Air from outside the car is circulated
through the system and discharged through the
N C
outlets, with
a lesser portion being discharged from the heater and defroster