LOCKNUT 5436289 - Caterpillar

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Full "AUT" DisplayControl Panel
Automatic Temperature Control Switch (2) - Press the "AUT" button for fully automatic operation of the climate control system. Full automatic mode may be enabled at any time. The "AUT" symbol, the temperature setpoint and the symbol for recirculation appear in display (6). Full automatic mode controls the temperature setpoint and the air outlets. The ambient temperature determines the air outlets that are used. The control module closes the water valve. In the manual temperature mode, pressing the "AUT" switch will cause the control panel to send a code for the automatic mode to the control module. The "AUT"symbol will appear in the display instead of the "HAND" symbol. The control module will actuate the air conditioner clutch or the water valve. The control module automatically regulates the fan speed in order to maintain the desired temperature.
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Manual Override of the Automatic selection of the Air Outlets
Air Outlet Selection Switch (3) - Press the air outlet selection switch in order to cycle through the different positions. The code that controls the position of the air outlets is sent to the control module. Hold the switch down in order to scroll through the different positions. After the switch is depressed for one second, the display will change at a rate of 2 positions per second. The symbol in the display will show the changed position. The air outlets are selected automatically when the system is in automatic mode "AUT".
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Defrost or Dehumidify OperationSelection of either of the defrost modes will enable the compressor. The air is dehumidified while the compressor is operating. Operating the compressor will also defog the windows. The compressor operates in automatic "AUT" mode only. The compressor is protected from operation during cold temperatures.
Fresh Air Control Closed position (4) - Push fresh air switch (4) in order to change the positions of door of the fresh air inlet. The symbol in the display will show the selected position. When this position is selected, the fresh air inlet is closed. The air will recirculate inside the cab.
Open Position - When this position is selected, the door to the fresh air inlet is open. Fresh air will be drawn into the cab. Note: The door for fresh air ventilation may automatically close for a few minutes when the machine is started and the system is in automatic mode. This will help to bring the air temperature to the setpoint more quickly.
Temperature Control Knob (5) - If the climate control system is in the automatic mode, rotate the temperature control knob in order to change the temperature setpoint. The temperature setpoint controls the temperature of the air that is coming from the air outlets in order to maintain the temperature setpoint. The preset temperature appears on display (6). One detent of the temperature control knob equals one degree F. One detent of the temperature control knob equals one half of one degree C. The temperature control knob will rotate continuously. Rotate the temperature control