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168 Heating and Air Conditioning
General
Three levels of the cab climate systems are
available. They can be identified by the ap-
pearance of the control panel.
The basic system is a heater and defroster
unit only. The heater unit has a rating of at
least 40 000 Btu.
W8001116
The manually operated heating and air con-
ditioning unit is controlled from the same
panel as the heater system, with the
addition of a switch for turning the air con-
ditioning system on (button with the
snowflake symbol).
W8001003
A variant of the air conditioning system
can be added as an option. This is called
the Automatic Temperature Control (ATC)
variant. It is identified with the switch
marked
aut. It allows all functions of the
previous systems, plus the ability to main-
tain the temperature in the cab as set by the
driver. The desired temperature is selected
by the combination of the temperature con-
trol setting and the fan speed.
W8001004
The air conditioning only operates when
the engine is running. Best performance
from the air conditioning is achieved when
all windows and vents are closed. At all
times, make sure the cowl fresh air intake
is free from snow, ice, leaves, etc.
NOTE! The air conditioning system is con-
tinuously monitored for correct function.
The monitor module has a read-out for fault
codes. See page 179 for more information.
Do not attempt to drive with the wind-
shield covered by mist, fog or frost. The
visibility is reduced which could lead to
an accident causing severe personal in-
jury or death. Read these instructions to
be able to hold the windshield clear at
all times. Maximum heat output for fast
defrosting can only happen after the en-
gine has reached operating temperature.