Komatsu WA380-6 Operation & Maintenance Manual page 146

OPERATION
HEATING OPERATION
1. Press main power switch (1) of the air conditioner to turn the
power ON.
2. Press fan switch (2) and set the air flow to "Hi".
3. Press temperature control switch (3) to set to the desired
temperature.
4. Press RECIRC/FRESH selector switch (4) to select FRESH.
5. Press mode selector switch (5) to set the vents to FOOT.
6. When the temperature inside the cab goes up, use the
temperature control switch and the fan switch to set to the
desired temperature.
7. When the AUTO switch is pressed, the temperature and
location of the vents are automatically selected.
REMARK
Heating is carried out using the engine cooling water, so it can be carried out when the cooling water temperature
is high.
DRYING-HEATING AND DEMISTING OPERATION
1. Press main power switch (1) of the air conditioner to turn the
power ON.
2. Press fan switch (2) and set the air flow to the desired setting.
3. Press temperature control switch (3) and set to the desired
temperature.
4. Press RECIRC/FRESH selector switch (4) to select FRESH.
5. Press air conditioner switch (5) to turn the air conditioner ON.
REMARK
When the outside temperature is below 0°C (32°F), the air conditioner (compressor) may not operate.
PRECAUTIONS WHEN USING
To prevent any excessive load on the engine or compressor, use the air conditioner when the engine is running.
If the machine is used in places where there is dust or bad smell, recirculate the air inside the cab when using the
air conditioner.
To prevent leakage of refrigerant from the air conditioner cooling circuit, run the air conditioner for several minutes
2 or 3 times a month, even during the off-season. If the machine is left for a long time when the refrigerant is
leaking, rust will form on the inside and this will cause failure.
To protect your health, do not make the inside of the cab too cool and do not let the cold air flow contact your skin
directly for long periods.
Ventilate the cab from time to time.
If the temperature inside the cab is high, open the door or window to let the hot air escape and let fresh air in before
starting operation of the air conditioner.
EXPLANATION OF COMPONENTS
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