Subaru SVX 1992 Manual page 972

4-7 [IV15F5] AUTOMATIC AIR CONDITIONING SYSTEM
2) Ordinary control 3) Quick cool-down control [When AUTO switch is ON]
(When AUTO switch or DEF switch is ON) If the auto amplifier decides from the overall signal T
The compressor delivery is changed so that the evapo- that maximum cooling capacity is required, it then
rator blow-out air temperature is maintained at 3°C maximizes the compressor delivery up to a certain
(37°F) . moment .
If the auto amplifier decides that maximum cooling
capacity is not needed, it then changes the compressor
delivery to the variable control zone .
A= I
rig. 1'-f
Evaporator protection against freezing
The compressor magnet clutch is turned OFF depend-
ing on the air temperature detected by the evaporator
intake sensor .
Compressor .______
Compressor
OFF
0.5
3
°C
(33)
(37) (OF)
Evaporator sensor temperature
C4-441
Fig. 80
Maximum Variable
High
discharge volume
control
Compartment
temperature
Compartment
t -------
Low
temperature
The point
where maximum
cooling capacity
is not required .
Time
C4-442
Fig. 81
If the evaporator outlet air temperature is lower than 3°C
(37°F) for more than five minutes, the compressor
changes from maximum delivery mode to variable de-
livery mode.
Evaporator
Maximum
Variable
outlet air
discharge
volume control
temp .
30C
Evaporator
(370F)
- i
discharge
5 minutes
temperature
i
Time
C4-443
Fig . 82
38