Komatsu ecot3 WA430-6 Operation & Maintenance Manual page 153

EXPLANATION OF COMPONENTS
METHOD OF OPERATION
COOLING 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) and set the display
monitor to COOL (A).
4. Press air conditioner switch (4) to turn the air conditioner
switch ON.
5. Press RECIRC/FRESH selector switch (5) to select RECIRC.
6. When the temperature inside the cab goes down, use the
temperature control switch and the fan switch to set to the
desired temperature.
REMARK
If the temperature control switch is pressed to set the display monitor to COOL (A) and the air conditioner is run with
the air flow at "Lo" for a long period, there is a slight risk that the evaporator will freeze.
If it freezes and no cold air comes out, turn the air conditioner switch OFF, raise the temperature setting, run the air
conditioner with the air flow at "Hi " for a short time, then turn the air conditioner switch ON again.
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) and set the display
monitor to HOT (A).
4. Press RECIRC/FRESH selector switch (4) to select FRESH.
5. When the temperature inside the cab goes up, use the
temperature control switch and the fan switch to set to the
desired temperature.
REMARK
The heating uses the heat from the engine cooling water, so it is effective only when the cooling water is hot.
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.
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OPERATION