Mitsubishi Pajero Pinin. Manual - part 363
HEATER, AIR CONDITIONER AND VENTILATION
–
General Information
55-3
GENERAL INFORMATION
The heater system uses a two-way-flow full-air-mix
system that features high performance and low
operating noise, and includes an independent face
air blowing function. The A/C system is basically
the same as the conventional system, but a new
refrigerant system has been adopted as a response
to restrictions on the use of chlorofluorocarbons.
In addition, an air purifier which carries out fine
A/C control has been included.
Items
Specifications
Heater unit
Type
Two-way-flow full-air-mix system
Heater control assembly
Dial type
Compressor
Model
Scroll type
<KC 50AG or KC 50G>
Dual pressure switch
kPa
High-pressure switch
ON
→
OFF: 2,650, OFF
→
ON: 2,050
kPa
Low-pressure switch
ON
→
OFF: 176, OFF
→
ON: 186
Refrigerant and quantity g
R-134a (HFC-134a)
Approx. 550 – 590 (R.H.D.)
Approx. 600 – 640 (L.H.D.)
SAFETY PRECAUTIONS
Because R-134a refrigerant is a hydrofluorocarbon
(HFC) which contains hydrogen atoms in place of
chlorine atoms, it will not cause damage to the ozone
layer.
Refrigerant R-134a is transparent and colourless
in both the liquid and vapour state. Since it has
a boiling point of – 29.8
_
C, at atmospheric pressure,
it will be a vapour at all normal temperatures and
pressures. The vapour is heavier than air,
non-flammable, and nonexplosive. The following
precautions must be observed when handling
R-134a.
Caution
Wear safety goggles when servicing the
refrigeration system.
R-134a 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 A/C 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 cold water. Call your
doctor immediately even though irritation has
ceased after treatment.
Caution
Do not heat R-134a above 40
_
C
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
is all the heat required 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-134a containers upright when charging
the system.
When metering 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.
The leak detector 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.