Komatsu WA470-6 2006, Operation & Maintenance Manual

Page: 156 / 392

3.2 Explanation of components Operation
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WA470-6H – VEAM946100
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) to set to the desired
temperature.
4. Press air conditioner switch (4) to turn the air conditioner
switch ON.
5. Press RECIRC/FRESH selector switch (5) to select
RECIRC.
6. Press mode selector switch (6) to set the vents to FACE.
7. When the temperature inside the cab goes down, use the
temperature control switch and the fan switch to set to the
desired temperature.
8. When the AUTO switch is pressed, the temperature and
location of the vents are automatically selected.
REMARK
Note that if the temperature control switch is pressed to set the
temperature to the lowest position, and the air conditioner is run
for a long time with the air flow at “Lo“, in rare cases, the evapo-
rator may 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 condi-
tioner 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) 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 tem-
perature 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.
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