HEATING AND AIR CONDITIONING OPERATION
Carrier Cab Heater.
The cab heater has air ducts that release air both
under the operator's seat and above the main control
panel (to defrost the windshield). The air flow
through both ducts is controlled by the HEATER FAN
Turn HEATER FAN Switch (42) to control the speed of the fan.
Pull HEATer Control (41) for warm air and push the knob in for cool air.
Pull DEFROST Control Knob (43) to direct heater air flow to the windshield.
Carrier Cab Air Conditioner.
There are two controls on the ceiling mounted air
conditioner control panel. One control turns the air
conditioner on and controls temperature. The Air
Turn the Air Conditioner Temperature Control (55) clockwise to turn on the
air conditioner unit. Adjust the temperature by turning the control clockwise.
The coldest setting is the extreme clockwise position.
Turn the Air Conditioner Fan Control (56) clockwise to increase fan speed.
There are low, medium, and high settings.
Superstructure Cab Heater.
Pull the PULL FOR AIR FLOW Knob (63, Figure 5-2) out for maximum air
The cab heater igniter requires full system voltage to
start. In order to ensure full system voltage, the
crane's diesel engine must be running. After the cab
heater starts, the engine can be shutdown since the
voltage supplied by the crane's batteries should be
enough to run the heater fan and fuel pump.
Start the diesel engine.