966G and 972G Wheel Loaders Heating and Air Conditioning Control Caterpillar


Heating and Air Conditioning Control
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1.1. Heating and Air Conditioning Switch
2.1. Fan Control
3.1. Temperature Variable Control
4.1. Heating and Air Conditioning System Operation

Heating and Air Conditioning Switch



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Air Conditioner (1) - Move the switch to this position in order to operate the air conditioning system.

Heater (3) - Move the switch to this position in order to operate the heating system.

Off (2) - Move the switch to the center position in order to deactivate the heating and air conditioning system. This will also deactivate the blower fan motor.

Fan Control



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Fan Speed Switch - The switch controls the speed of the blower fan motor for the heating and air conditioning system.

Start the blower fan motor by moving the switch to position (1) for the air conditioner or to position (3) for the heater.

Low (4) - Move the fan speed switch to this position for the lowest fan speed.

Medium (5) - Move the fan speed switch to this position for medium fan speed.

High (6) - Move the fan speed switch to this position for the highest fan speed.

Temperature Variable Control



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Temperature Variable Control - Turn knob (7) clockwise for warmer air. Turn knob (7) counterclockwise for cooler air.

Heating and Air Conditioning System Operation



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The heating and air conditioning system can be used for four functions:

Heating - Push the bottom of switch (8) in order to turn on the heater. Set the fan speed switch to the desired speed. Adjust temperature variable control (7) for the desired temperature.

Cooling - Push the top of switch (8) in order to turn on the air conditioner. Set the fan speed switch to the desired speed. Adjust temperature variable control (7) for the desired temperature.

Pressurizing - Pressure inside the cab will help keep out dust. Close the door and the windows in order to pressurize the cab.

Defogging - Press the top of switch (8) in order to turn on the air conditioner. Set the fan speed switch to the desired speed. This will prevent moisture from forming on the windows. The volume of air that is needed to remove moisture from the cab varies according to the speed of the fan. Adjust the temperature controls so that the windows remain free of moisture.

Information System: