Mitsubishi 3000GT Service Manual page 1241

HEATERS AND MANUAL
AIR CONDITIONING
Charge valve
Adaptor valve (1)
Charging hose
Adaptor valve (2)
Service can
Low pressure service
valve
Refrigerant line or
compressor
CORRECTING LOW REFRIGERANT LEVEL
(1) Install the charge valve to the service can with its handle
turned back all the way (valve open).
(2) Attach the adaptor valve (1) with the handle tightened
to the charge valve (valve open).
(3) Attach the charge hose to adaptor valve (1).
(4) Turn the handle of adaptor valve (2) back fully (valve
shut) and attach the charging hose.
(5) Tighten the charge valve handle to puncture the service
(6) E:n the charge valve handle back fully (valve open)
and operate the handle of adaptor valve (2) to bleed
the air.
(7) Install the adaptor valve (2) to the low pressure side service
valve.
Caution
Never attempt to use the high pressure side, or refrig-
erant will flow reversely and break the service can
and charging hose.
(8) Start the engine.
(9) Operate the air conditioning and set at the lowest tempera-
22060331
ture (MAX. COOL).
(lO)Fix the engine speed at 1,500 rpm.
charge refrigerant checking level with the sight glass.
(2) handle all the way (valve shut).
(13)Remove the adaptor valve (2) from the service valve.
NOTE
If the service can is not emptied completely, keep the
charge valve and adaptor valves (1) and (2) closed until
after the next operation.
DISCHARGING SYSTEM
Use the refrigerant recovery unit to discharge refrigerant gas
from the system.
NOTE
Refer to that Refrigerant Recovery and Recycling Unit Instruc-
tion Manual for operation of the unit.
OIL IN THE AIR CONDITIONING SYSTEM REFILLING
Too little oil will provide inadequate compressor lubrication
and cause a compressor failure. Too much oil will increase
discharge air temperature.
When an FX-105VS compressor is installed at the factory,
it contains 160 cm3 (5.4 fl.oz.) of refrigerant oil. While the
air conditioning system is in operation, the oil is carried through
the entire system by the refrigerant.
Some of this oil will be trapped and retained in various parts
of the system.
When the following system components are charged, it is
necessary to add oil to the system to replace the oil being
removed with the component.
Compressor oil: FREOL S-83 or SUNISO 5GS
Quantity
Evaporator: 60 cm3 (2.0 fl.oz.)
Condenser: 15 cm3 (S fl.oz.)
Suction hose: 10 cm3 (.3 fl.oz.)
Receiver: 10 cm3 (-3 fl.oz.)
TSB Revision