Saab 900 1983 - Climate Control System; Ventilation System; Fresh Air Filter; Air Conditioning (Optional)

CLIMATE CONTROL SYSTEM
Ventilation System
The Saab 900 has a sophisticated f lo w through
ventilation system with an optional integrated
air conditioner . Air enters at the right hood
louver and exits at the rear quarter panel grilles .
All
incoming air passes through the air filter (or
AC evaporator) and,
except for air channeled to
the center panel vent, then passes through the
heater
core . All system controls are located in
the
center of the instrument panel. A schematic
of the interior outlets is shown below . The three
panel
vents are adjustable directionally and
have
individual thumb wheel shut off switches
(0 = Off).
1. Defroster outlets
2. Outer panel vents (adjustab l e)
3. Center panel vent (adj ustable)
4. Floor outlets
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4
Fresh Air Filter
(900 without AC)
All incoming air passes through the fresh air
f ilter which removes pollen, dust , and other air·
borne particles .
The filter element should be changed every
15,000 miles. Caution: Avoid skin contact with
the treated fibers . Irritation may result.
Air Conditioning (Optional)
On models equipped with air conditioning there
is an on/off switch for the AC compressor. The
compressor can be turned on independent of
other climate control settings. (It will not switch
on if the outside temperature is below 38°F.) AC·
equipped models also have a recirculation fea·
ture incorporated in the Max Vent position of
the air distribution selector.
Run the
air conditioner a few minutes occa·
sionally during the winter to ensure proper com·
pressor seal lubrication.
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CONTROLS and SETTINGS
The rotary control switches are located in the
center of the instrument panel.
1. Fan Switch
The fan is off when the air distribution selector
is in the 0 position . It automatically runs in its
fourth speed in the Max Vent position . In all
other posi t ions the rotary fan switch governs
the fan speed. The
switch has posit i ons for the
first through third speeds.
2. Temperature Control
All incoming air except that emitted from the
center panel vent passes through the heater
core . The temperature control modulates the
amount of heat added to the air by controlling
the flow of heated engine coolant through the
core . Turning the rotary knob clockwise in·
creases the temperature .
3, Air Distribution Selector
The rotary selector switch controls distribution
of the incoming air . Recommended positions
for engaging air conditioner, if so equipped, are
shown in brackets [ ).
4. AC On/Off Switch
Push In to engage AC compressor .