YOKE & DUST CUP ASSEM 3H2002 - Caterpillar

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The Fan Speed Switch for the Heating and for the Air Conditioning (5) - The fan speed switch controls the three-speed blower fan motor.
Off (4) - Move the switch to the vertical position in order to stop the blower fan. Move the switch counterclockwise in order to operate the blower fan for the air conditioner.
Low (1) - Move the switch to this symbol for the lowest fan speed.
High (2) - Move the switch to this symbol for a higher fan speed.
Defogging (3) - Move the switch to this symbol in order to remove moisture from the cab.
Illustration 2 g00104149
The Fan Speed Switch for the Heating and for the Air Conditioning (5) - The fan speed switch controls the three-speed blower fan motor.
Off (4) - Move the switch to the vertical position in order to stop the blower fan. Move the switch clockwise in order to operate the blower fan for the heater.
Low (6) - Move the switch to this symbol for the lowest fan speed.
High (7) - Move the switch to this symbol for a higher fan speed.
Defrosting (8) - Move the switch to this symbol in order to defrost the windshield and windows.
Illustration 3 g00104150
Temperature Variable Control - Turn the control knob anywhere between the OFF position (left) and the MAXIMUM position (right). This will control the amount of heating and the amount of cooling. Heating System Operation and Air Conditioning System Operation
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The heating and air conditioning system can perform four functions:
Heating - Turn the blower fan switch to LOW, HIGH or DEFROSTING speed. Adjust the temperature variable control for the desired temperature.
Air Conditioning - Activate the air conditioning system. Turn the blower fan switch to LOW, HIGH or DEFOGGING speed. Adjust the temperature variable control for the desired temperature. Pressurizing - When heating or cooling is not desired, pressurize the cab in order to prevent dust from entering.Turn the temperature variable controls to a comfortable stage. Turn the blower fan switch to LOW, HIGH, or DEFROSTING speed. Use the fan speed that is needed to keep out the dust.Defogging - Activate the air conditioning system. Turn the blower fan switch for the air conditioner to LOW, HIGH, or DEFOGGING speed. Use the fan speed that is needed to remove moisture from the air in the cab. This prevents moisture from forming on the windshield and the windows. Adjust the temperature control until the moisture level is lowered. Adjust the temperature control until the temperature of the cab is comfortable.