Buhler 2180 - Manual (Page 53)

SECTION 2 - OPERATION
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AIR CONDITIONING OPERATION
Depress the air conditioning switch, 1, to activate the
air conditioner. Depress the switch a second time to
deactivate the air conditioner.
NOTE: The air conditioning system uses R134A
refrigerant. DO NOT mix with other refrigerants.
The temperature control switch, 2, is used to
maintain a constant temperature. Rotate the
temperature control switch counterclockwise to-
wards the blue index to increase cooling. Adjust the
pressurized fan speed switch, 3, to increase or
decrease air flow.
To aid in defrosting the windshield and side windows
the air conditioner and heater may be operated at the
same time. The air conditioner will remove moisture
from the air while the heater warms the air in the cab.
When the windows are clear, deactivate the air
conditioner.
IMPORTANT: Always turn the air conditioner off
when cooled or dehumidified air is not required. This
is especially important during cold weather as
damage to the compressor could result. For proper
air conditioner operation, the cab air filter must be
serviced regularly.
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HEATER OPERATION
Make sure the air conditioner is deactivated except
during defrosting. The switch, 1, should be in the
extended position.
To increase the cab interior temperature for cold
weather operation, start the engine and make sure
the coolant temperature bar graph indicates two or
more bars. Rotate the temperature control switch, 2,
clockwise to the red index for more heat. Adjust the
pressurized fan speed switch, 3, to increase or
decrease air flow.
PRESSURIZER OPERATION
The pressurizer fan has a three-position switch, 3.
Low speed is full counterclockwise. Rotate the switch
clockwise to position two for medium speed and to
position three for high speed.
NOTE: The pressurizer fan will operate in one of the
three speeds when the key switch is in the ON
position.
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