Mitsubishi 1992 3000GT, Руководство по обслуживанию

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4
HEATERS AND MANUAL
AIR CONDITIONING
Safety Precautions
SAFETY PRECAUTIONS
<Vehicles using R-l 2 refrigerant>
R-12 refrigerant is a chlorofluoro-carbon (CFC) that
can contribute to the depletion of the ozone layer
in the upper atmosphere.
Ozone filters out harmful radiation from the sun.
To assist in protecting the ozone layer, Mitsubishi
Motor Sales of America recommends that an R-12
refrigerant recycling device that meets SAE Stan-
dard
be used.
Contact an automotive service equipment supplier
for refrigerant recycling equipment that is available
in your area.
The refrigerant used in all air conditioning systems
is R-12. It is transparent and colorless in both the
liquid and vapor state. Since it has a boiling point
of
at atmospheric pressure,
it will be a vapor at all normal temperatures and
pressures. The vapor is heavier than air, non-flam-
mable, and nonexplosive. It is nonpoisonous except
when It is in direct contact with open flame. It is
noncorrosive except when combined with water.
The following precautions must be observed when
handling R-l 2.
Caution
Wear safety goggles when servicing the refrig-
eration system.
R-12 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 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-12 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-12 above
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 (1256°F) is all the heat re-
quired for this purpose. Do not heat the refrigerant
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-12 containers upright when charging
the system.
When adding R-12 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
Always work in a well-ventilated room.
Good ventilation is vital in the working area.
Although R-12 vapor is normally nonpoisonous,
contact with an open flame can cause the vapor
to become very poisonous. A poisonous gas is
produced when using the flame-type leak detector.
Avoid inhaling the fumes from the leak detector.
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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TSB Revision