Mitsubishi Eclipse. Technical Information Manual (1994) — part 95
EQUIPMENT Heater and Air Conditioning
A/C COMPRESSOR CONTROL
If any of the switches and sensors is caused to
be OFF, the compressor clutch relay and compres-
sor magnet clutch are forced to the OFF state.
Blower switch
Manually set to ON and OFF
switch
Manually set to ON and OFF
Dual pressure switch
Low pressure switch
OFF
at 200
(29 psi) or lower;
ON at 220
(32 psi) or higher
High pressure switch
OFF at 3,140
(456 psi) or lower;
ON
at 2,550
(370 psi) or higher
Refrigerant temperature switch
ON at approx. 110°C (230°F) or lower;
OFF at approx.
(329°F) or higher
Air inlet sensor
Measure the evaporator inlet air and surface temper-
.=
atures and input the measured data to the auto
Fin
sensor
pressor-ECM. (Refer to the auto compressor-ECM
control characteristic diagram on
Revolution pick-up
<Non-turbo>
OFF when compressor slipping rate(s) is 70% or
more
<Turbo>
Ignition switch (IG2)
Fusible link
Auto
ECM
Air
Fin
sensor
sensor
Fuse
1
, compressor
clutch relay
Compressor
EQUIPMENT
- Heater and Air Conditioning
<Non-turbo>
Ignition switch (IG2)
Auto compressor-ECM
Ignition coil
Air
sensor
ed
I
Fin thermo
sensor
Dual
pressure
switch
Revolution
pick-up sensor
Fusible link
Compressor
EQUIPMENT Heater and Air Conditioning
Meltable
bolt
(Abolished)
iccan
Section A-A
2 0 x 0 1 9 7
New refrigerant
system
Conventional
refrigerant
system
Charging hose
C O N D E N S E R F A N A N D R A D I A T O R F A N C O N -
T R O L
For information on condenser fan and radiator fan control,
refer to Group 1 Control System of Engine.
RECEIVER
l
The new refrigerant
is highly
and
would require much more amount of conventional desiccant
(silica gel) to be kept dry.
The new desiccant (molecular sieve) used for drying the
refrigerant has enough capacity to absorb moisture without
need for change to the receiver capacity.
l
In the conventional design, the meltable bolt on the receiver
fuses to let out the refrigerant gas in its entirety into open
air when the high-pressure side pressure becomes too
high.
The new system has a relief valve in the compressor which
plays the same role as the meltable bolt but closes after
release of only necessary quantity of refrigerant, so that
the amount of released refrigerant is limited to the minimum.
NOTE
For details about the relief valve, see COMPRESSOR,
SERVICE VALVE
A quick-disconnect type joint, instead of conventional screw-in
type joint, is used for the service valve to prevent incorrect
charging and enhance serviceability.
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