Mitsubishi 3000GT Service Manual page 1243

Adaptor ialve
Service can
(Refrigerant-
container)
Low pressure
service valve
HEATERS AND MANUAL
AIR CONDITIONING
the charging valve to the service can.
(17)Turn the handle of the adaptor valve back all the way
(valve closed), remove it from the gauge manifold and
install the service can.
to puncture the service can.
Service can
(19)Turn the handle of the charging valve back (valve open)
and tighten the handle of the adaptor valve (valve open)
to charge the system with refrigerant.
Caution
If the service can is inverted, liquid refrigerant may
be drawn into the compressor damaging it by liquid
compression. Keep the service can upright to ensure
that refrigerant is charged in gas state.
(20)If the refrigerant is not drawn in, turn the handle of the
adaptor valve back all the way (valve closed).
(21)Check for gas leaks using a leak detector.
If a gas leak is detected, re-tighten the connections, and
then repeat the charging procedure from evacuation in
step (12).
Caution
A leak detector designed for R-134a should be used.
COOL).
(24)Fix the engine speed at 1,500 rpm.
(25)Tighten the handle of the adaptor valve (valve open)
to charge the required volume of refrigerant.
Caution
If the service can is inverted, liquid refrigerant may
be drawn into the compressor damaging it by liquid
compression. Keep the service can upright to ensure
that refrigerant is charged in gas state.
adaptor valve back all the way (valve closed).
(27)lighten the charging valve handle (valve closed).
Remove the quick joint (for low pressure) from the low-
pressure service valve.
NOTE
If the service can is not emptied completely, keep the
handles of the charging valve and adaptor valve closed
for the next charging.
TSB Revision
55-23