3 - CONTROLS AND INSTRUMENTS
Overhead controls
Cab climate control
NHIL15CT00526AA 1
This section of the manual describes the operation and use of a cab îš¿tted tractor with an air conditioning system.
This air conditioning system, in addition to ensuring optimum temperature inside the cab, reduces air humidity, which
otherwise may be a nuisance to the operator and compromise safe tractor operation.
The cab’s heating system utilizes the engine coolant for a heat source. The temperature control switch controls the
heat valve mechanically allowing the heat valve to open or close the ow of engine coolant to the heating coil located
in the upper rear of the cab. The heating and ventilation systems utilize the same fan and duct work as the air condi-
tioning system.
The cab is tted with windows, which reduce the effects of the sun’s rays inside the cab. The sun proof side panels,
roof, and ooring reduce noise to a minimum.
In addition the cab has recirculation air îš¿lters that provide îš¿ltration of the air coming into the cab from the outside, and
pressurization.
3-75
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