Economy And Defrost Switch - New Holland T7030 Operator's Manual

SECTION 2 - - CONTROLS, INSTRUMENTS AND OPERATION

Economy and Defrost Switch

The economy and defrost switch has three positions:
1. Left side depressed. ECONomy mode.
2. Central position. ECON and MAX DEF off.
3. Right side depressed. MAX DEFrost on.
When the external air temperature is low, operating
the air conditioner may not be necessary to maintain
a constant temperature inside the cab. To turn off the
air conditioner, depress the ECON side of the switch.
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NOTE: The air conditioning compressor uses engine
horespower to drive it. Turning off the air conditioner
when not required will aid fuel economy.
The cab temperature will be maintained within the
specified limits unless the external air temperature
rises above that set on the control. Should this occur,
select the central switch position to turn on the air
conditioner.
In very cold conditions where the outside of the cab
windows become covered in ice, depress the MAX
DEF side of the switch. This will automatically set the
heater temperature to maximum, activate the air
conditioner (if not already switched on), and select
the highest speed setting on the blower fan.
This function may also be used to clear heavy misting
on the inside of the cab windows.
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