Mitsubishi 3000GT Service Manual page 1235

<Vehicles using R-l 34a refrigerant>
Because R-l 34a refrigerant is a hydrofluorocarbon
of chlorine atoms, it will not cause damage to the
ozone layer.
Ozone filters out harmful radiation from the sun,
To assist in protecting the ozone layer, Mitsubishi
Motor Sales of America recommends an R-134a
refrigerant recycling device.
Refrigerant R-l 34a is transparent and colorless
in both the liquid and vapor state. Since it has
a boiling point of -29.8% (-21.7"F), at atmospher-
ic pressure, it will be a vapor at all normal tempera-
tures and pressures. The vapor is heavier than
air, non-flammable, and nonexplosive. The follow-
ing precautions must be observed when handling
R-l 34a.
Caution
Wear safety goggles when servicing the refrig-
eration system.
R-l 34a evaporates so rapidly at normal atmospher-
ic pressures and temperatures that it tends to
freeze anything it contacts. For this reason, ex-
treme care must be taken to prevent any liquid
refrigerant from contacting the skin and especially
the eyes. Always wear safety goggles when servic-
ing the refrigeration part of the air conditioning
system. Keep a bottle of sterile mineral oil handy
when working on the refrigeration system. Should
any liquid refrigerant get into the eyes, use a few
drops of mineral oil to wash them out. R-134a
is rapidly absorbed by the oil. Next splash the
eyes with plenty of cool water. Call your doctor
immediately even though irritation has ceased after
treatment.
Caution
Do not heat R-134a above 40°C (104°F).
HEATERS AND MANUAL
AIR CONDITIONING
In most instances, moderate heat is required to
bring the pressure of the refrigerant in its container
above the pressure of the system when charging
or adding refrigerant. A bucket or large pan of
hot water not over 40°C (104°F) is all the heat
required for this purpose. Do not heat the refriger-
ant container with a blow torch or any other means
that would raise temperature and pressure above
this temperature. Do not weld or steam clean on
or near the system components or refrigerant lines.
Caution
Keep R-134a containers upright when charging
the system.
When adding R-134a into the refrigeration system,
keep the supply tank or cans in an upright position.
If the refrigerant container is on its side or upside
down, liquid refrigerant will enter the system and
damage the compressor.
Caution
1. A leak detector designed for R-134a should
be used to check for refrigerant gas leaks.
2. Do not allow liquid refrigerant to touch
bright metal.
Refrigerant will tarnish bright metal and chrome
surfaces, and in combination with moisture can
severely corrode all metal surfaces.