Method Of Operation - Komatsu WA320-5H Operation & Maintenance Manual

EXPLANATION OF COMPONENTS

METHOD OF OPERATION

Switchs
Condition of use
Rapid
Cooling
Normal
Dehumidifying,
heating
Rapid
Heating
Normal
Defroster
Vetilation or
pressurizing
When carrying out the defrosting, if the temperature control
switch is set so that all lamps are red, this will improve the per-
formance for defrosting and demisting.
Set the vent mode selector switch to the intermediate position
to give the desired condition.
With the FACE vents, it is possible to adjust the direction of the
air flow and to turn it on or off.
However, do not set to the FACE mode with the vents closed.
WHEN NOT USING THE AIR CONDITIONER REGULARLY
Run the air conditioner at cooling or dehumidification + heating for several minutes from time to time to prevent the
loss of the oil film at various parts of the compressor.
REMARK
If the temperature inside the cab is low, the air conditioner may not work. In such cases, use the recirculated air to
heat up the inside of the cab, then turn the air conditioner switch on to run the air conditioner.
3-52
Air conditioner
Fan switch
switch
HI ON
HI-LO ON
HI-LO ON
HI OFF
HI-LO OFF
HI ON
HI-LO OFF
Temperature FRESH/RECIRC
control switch selector switch
All blue RECIRC
More than half
FRESH
are blue
More than half
FRESH
are red
All red RECIRC
More than half
FRESH
are red
More than half
FRESH
are red
All blue FRESH
OPERATION
3
Mode selector
switch
FACE
FACE
FOOT
FOOT
FOOT
DEF
FACE