Komatsu WA800-1 Operation & Maintenance Manual page 152

OPERATING THE CAR HEATER
METHOD OF OPERATION
SELECTING AIR VENT
Heating
Open or
Open
Open or
closed closed
Defrosting
Closed
Open or
closed
Open
Ventilation
Open Open Open
*
*
The effectiveness of the heating * If the outside air is extremely
system can be increased by dusty, set the fan switch to the H
selecting the most suitable vent. position. This will pressurize the
Do not turn the fan switch on cab and prevent the dust from
when all the vents are closed. entering.
OPERATION OF CONTROL PANEL
Temperature control lever
Air selector
lever
Quick H
WARM (moved fully to WARM side) REC
Heating -
Normal
H-L Middle -WARM
FRE
Defrosting
Middle d WARM (to remove frost quickly
H
or to prevent the window from misting FRE
up, move the lever to the top)
Ventilation or
pressurizing
H-L COOL (move fully to COOL side) FRE
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