User Manual

How to Operate Automatic Cab Air
Conditioner
Follow these steps to activate the Auto
Mode:
1.
Press the AUTO button.
2. Rotate theTemperature Control
dial to the desired temperature.
The system will achieve the comfort level
associated with the temperature selected.
Cab temperature can be slightly higher or
lower than the selected temperature, which
is a normal when in AUTO mode and
should not be mistaken for a system
malfunction.
MAX Defrost Mode
The heating and air conditioning system
provides for one touch windshield
defrosting. Certain driving conditions will
cause fog or ice to form on the windshield.
By pressing the MAX defrost button, the
system will automatically adjust the blower
speed, recirculation, air temperature, and
air outlet distribution to maximize clearing
of the windshield. The system will remain
in this mode until the driver presses the
button again or adjusts the dials.
The air temperature in MAX defrost mode
will be set to the warmest temperature
setting. This setting helps to clear the
windshield of ice and fog more quickly
.
Outside air mode and the air conditioner
compressor are also active to maximize
performance. The A/C compressor and
recirculation switches are disabled in MAX
Defrost.
CONTROLS - Heating and Air Conditioning
automatic mode. This can be done via the
dials and/or buttons on the HVAC control.
In Semi-automatic mode, the AUTO button
indicator will cease to be illuminated.
Instead, the indicator of the adjusted
setting will illuminate. For example, if the
driver adjusts the fan dial while in AUTO
mode, the fan dial indicator will illuminate
and fan speed will adjust to the setting of
the dial. However, the temperature and air
outlet settings will continue to function
automatically. Similarly, if user adjusts the
air distribution setting while in AUTO mode,
the air distribution dial indicator will
illuminate and the distribution will adjust to
the setting of the dial. The fan and
temperature settings will continue to
function automatically.
Economy Function
An economy function is also available in
Semi-automatic mode. In this mode, the
system will operate in AUTO mode without
the use of the A/C compressor. The
operator may select economy by initiating
AUTO mode and then pressing the A/C
button to disengage the compressor. The
indicators for A/C compressor and AUTO
mode do not illuminate while operating in
economy mode.
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