Mitsubishi Stealth 1994 Import Service Manual page 1203

HEATERS AND MANUAL AIR CONDITIONING -
ON - - - -
- - - - - - - - - -
OFF
200 225
Pressure F-j
SERVICE ADJUSTMENT PROCEDURES
TEST PROCEDURES
SIGHT GLASS REFRIGERANT LEVEL TEST
The sight glass is a refrigerant level indicator. To check the
refrigerant level, clean the sight glass and start the vehicle
engine. Push the air conditioning button to operate the
compressor, place the blower switch to high and move the
temperature control lever to MAX. COOL. After operating for a
few minutes in this manner, check the sight glass.
the compressor discharge line is warm and the compressor
inlet line is cool; the system has a full charge.
(2) If the sight glass is clear, the magnetic clutch is engaged
and there is no significant temperature difference between
compressor inlet and discharge lines; the system has lost
most of its refrigerant charge.
(3) If the sight glass shows foam or bubbles, the system could
be low on refrigerant or the receiver drier is restricted. The
system has to be tested, leak checked then recharged with
refrigerant.
MAGNETIC CLUTCH
(1) Disconnect the wiring to the magnetic clutch.
(2) Connect battery (-) to compressor body.
(3) Connect battery (+) voltage directly to the wiring for the
magnetic clutch.
(4) If the magnetic clutch is normal, there will be a "click". If
the pulley and armature do not make contact ("click"), there
is a malfunction.
RECEIVER DRIER
To Test the Receiver Drier
touching the receiver drier outlet and inlet.
(2) If there is a difference in the temperatures, the receiver
drier is restricted.
Replace the receiver drier.
DUAL PRESSURE SWITCH (LOW PRESSURE SWITCH)
to the low pressure side service valve.
(2) With the gauge manifold low pressure service valves
closed, connect the gauge manifold high pressure side
charging hose to the adaptor valve.
)
(3) Tighten the adaptor valve handle and open the service
valve.
(4) If there is continuity between the dual pressure switch
2,600 3,200
terminals when the low pressure side pressure is at the
level of dual pressure switch ON condition shown to the
left, the switch is functioning normally. If not, replace the
switch.
Service Adjustment Procedures 24- 1 1