Mitsubishi 3000GT Service Manual page 1244

55-24
Valve open
Charge valve
Charging hose (blue)
Service can
low pressure)
Low pressure
service valve
HEATERS AND MANUAL
AIR CONDITIONING
CORRECTING LOW REFRIGERANT LEVEL IN CASE
THE SERVICE CAN IS USED
(1) Install the charge valve with the handle turned all the
Adaptor valve
way out (valve open) of the service can.
(2) Install the adaptor valve with the handle turned all the
way back (valve close) to the charging valve.
(3) Connect the charging hose (blue) to the adaptor valve.
(4) Connect the charging hose (blue) to the quick joint (for
low pressure).
(5) Tighten the handle of the charge valve (valve close),
and pierce the service can.
(6) Turn the handle of the adaptor valve to bleed the air.
(7) Install the quick joint (for low pressure) to the low pressure
service valve.
NOTE
The low-pressure service valve should be connected to
the low-pressure hose.
(8) Start the engine.
(9) Operate, the air conditioner and set at the lowest tempera-
ture (MAX. COOL).
(ll)Tighten the handle of the adaptor valve (valve open),
and replenish refrigerant checking the quantity through
the sight glass.
Caution
If the service can is inverted, liquid refrigerant may
be draw into the compressor damaging it by liquid
compression. Keep the service can upright to ensure
that refrigerant is charged in gas state.
(12)After replenishing is completed, turn the handle of the
adaptor valve all the way back (valve close), and remove
the quick joint.
NOTE
If any refrigerant is remaining in the service can, close
the adaptor valve and save the refrigerant for another
vehicle. Do not release into the atmosphere.