Mitsubishi Stealth 1994 Import Service Manual page 1202

HEATERS AND MANUAL. AIR CONDITIONING - Safety Precautions
SAFETY PRECAUTIONS
Because R-l 34a refrigerant is a hydrofluorocarbon
(HFC) which contains hydrogen atoms in place 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, Chrysler
Corporation recommends an R-l 34a refrigerant
recycling device.
Refrigerant R-134a is transparent and colorless in
both the liquid and vapor state. Since it has a boiling
point of -29.8"C (-21.7"F), at atmospheric pressure,
it will be a vapor at all normal temperatures and
pressures. The vapor is heavier than air, non-
flammable, and nonexplosive. The following precau-
tions must be observed when handling R-134a.
Caution
Wear safety goggles when servicing the refri-
geration system.
R-l 34a evaporates so rapidly at normal atmospheric
pressures and temperatures that it tends to freeze
anything it contacts. For this reason, extreme care
must be taken to prevent any liquid refrigerant from
contacting the skin and especially the eyes. Always
wear safety goggles when servicing the refrigera-
tion part of the air conditioning system. Keep a
bottle of sterile mineral oil handy when working on
the refrigeration system. Should any liquid re-
frigerant 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).
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 d
water not over 40°C (104°F) is all the heat required
for this purpose. Do not heat the refrigerant contain-
er with a blow torch or any other means that would
raise temperature and pressure above this tempera-
ture. 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-l34a 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
A leak detector designed for R-134a should be
used to check for refrigerant gas leaks.
Caution
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.
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