Pontiac 1957 Owner's Manual page 23

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Using the Fan-The "BLOWER" switch (located directly below
the "AIR" and "TEMP" levers) when moved to the "LO" or "HI"
position will aid in circulating air 'for both the heater and defroster.
The
"BLOWER"
should be used when the car is driven slowly
or
is
stopped, to
speed
up de-icing of the windshield, to prevent fogging
of the windows when carrying several passengers, or to provide forced
air ventilation when it is necessary to keep the car windows closed
while driving in a
summer
rainstorm. The blower
should
also be used
when maximum heater
output
is desired.
NOTE: Under very adverse weather conditions, window defogging or wind-
shield de-icing may be improved by opening a door window approximately
Va
inch.
The following are examples of heater control panel settings for various
types of driving conditions.
NORMAL DRIVING-WINTER OR SUMMER
"AIR"
..
.
.
.
.
...
...
..
...
Set lever between "NORMAL" and
"DE-ICE"
as desired
"TEMP" ........
.
.....
Set lever at temperature desired in car
"BLOWER" .
.
.
.
..
.
.... Switch "OFF"
MAXIMUM HEAT INPUT OR
DE-ICING WINDSHIELD
"AIR"
...........
.
..... Set lever at "DE-ICE"
"TEMP"
.
... :"
...
......
Set lever at "HIGH"
"BLOWER"
.
.
....
.
....
Switch "HI"
SUMMER RAINS OR SLOW CITY TRAFFIC
"AIR" ...
.
..
.
...
.
...
.
.
.
Set lever at "NORMAL"
"TEMP" ....
.
..
..
..
.... Set lever at "OFF"
"BLOWER"
.
.......
.
... Switch "LO"
The "AIR" lever should be left at "NORMAL" to help prevent that
moist, sticky feeling usually experienced in such weather. The
"BLOWER" switch can be turned "OFF" after leaving the slow city
traffic. This will conserve electric current and motor life.
[20
J

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