Komatsu D65EX-12 Operation & Maintenance Manual page 87

EXPLANATION OF COMPONENTS
TEMPERATURE CONTROL LEVER
This lever (3) is used to control the temperature for heating.
When the temperature control lever is moved to the right,
the temperature of the air coming from the vents becomes
lower.
When the temperature control lever is moved to the left,
the temperature of the air coming from the vents becomes
higher.
METHOD OF OPERATION
TO HEAT QUICKLY
Set the switches to the position shown in the diagram on the
right to carry out heating quickly
Set FRESH/RECIRC selector lever (1) and temperature
control lever (3) to the position in the diagram on the right.
Set blower switch (2) to position 3 (HIGH).
NOTICE
If heating is carried out continuously for a long period with
the lever at the RECIRC position, the air inside the cab will
become stale, so when the cab is warmed up, always set
the FRESH/RECIRC selector lever (1) to the FRESH posi-
tion.
In this position, the inside of the cab is pressurized to pre-
vent the entry of dust.
MORNAL USE
Set each switch to the desired position.
PREVENTION METHOD OF ENTRY OF DUST
Entry of dust into the cab can be prevented by starting the blower fan for the heater to raise the pressure in the cab
a little higher than outside.
When working in a dusty job site or when preventing dust from entering the cab, use this function.
Close the windows and doors.
Set lever (1) to the FRESH position.
Set switch (2) to the desired position.
Set lever (3) to the desired position.
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OPERATION