Kubota M108S, Workshop Manual

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10-M2
M108S, WSM CABIN
The machine is equipped with a thin large-capacity air
conditioner with outside air intake. The air through the
inside air filter (9) as well as the outside air filter (4) and
the roof (8) reaches the air conditioner unit (1). The air is
cooled and dehumidified by this unit.
The resulting air is heated to a comfortable level. In
this way, the air being blown via the blow port can be kept
at comfortable temperature and humidity.
The three front blow ports (5) can be opened and
closed using the center knob of each port. The four side
blow ports (7) are opened and closed using the mode
lever on the control panel (6). With these ports open or
closed, you can feel your head cool and your feet warm.
W1014918
NOTE
■
• Refer to “10. CABIN” section in the workshop manual of tractor mechanism (Code No. 9Y021-18200).
• The type of the compressor is scroll type.
■
Compressor Oil
The compressor oil dissolves in the refrigerant, circulates through the air-conditioning cycle, and functions to
lubricate the compressor. But the conventional compressor oil for R12 doesn't dissolve in R134a, so it doesn’t
circulate through the cycle, and the lifespan of the compressor is considerably shortened.
It is still essential to ensure that the correct refrigerant oil is used. R12 systems were lubricated with mineral oil,
which is totally unsuitable for R134a systems. The letter require PAG oil, which mixes very well with the refrigerant
and provides ideal lubrication throughout the system.
*PAG : Polyalkyleneglycol (Synthetic oil)
Capacity (Cooling)
Factory
spec.
3.95 kW
Capacity (Warming)
Factory
spec.
4.30 kW
Kinds of refrigerant
(Charge amount) Factory
spec.
R134a
0.95 to 1.05 kg
2.09 to 2.31 lbs
Pressure sensor (Low)
Factory
spec.
0.196 MPa
2.0 kgf/cm
2
28.4 psi
Pressure sensor (High)
Factory
spec.
3.14 MPa
32.0 kgf/cm
2
455 psi
(1) Air Conditioner Unit
(2) Outer Roof
(3) Inside / Outside Air Selection
Damper
(4) Outside Air Filter
(5) Front Blow Port
(6) Control Panel
(7) Side Blow Port
(8) Inner Roof
(9) Inside Air Filter
Quantity (Total) Brand Name
60 to 100 cc
0.063 to 0.106 U.S.qts.
0.053 to 0.088 Imp.qts.
ND-OIL 8 <PAG* oil>
KiSC issued 06, 2007 A