OPERATING CONTROLS AND PROCEDURES MLC650 OPERATOR MANUAL
3-30
Published 08-12-19, Control # 224-13
Climate Control Keypad
NOTE If the optional APU is installed, the climate control system can be operated when the crane engine is off. See AC
Operation on page 3-81 for instructions.
Table 3-9. Climate Control Keypad
Item Name Description
A Temperature Set Switches Adjusts the desired cab temperature UP or DOWN.
B Windshield Defrost
Turns the fan on and opens the fresh air door to bring in air from outside the
cab.
C Automatic Fan Control Switch
Places the system in a fully automatic temperature control mode including fan
speed. The system will adjust the fan speed to the lowest setting necessary to
maintain the cab temperature at the displayed set point temperature.
D Power ON Switch Turns the control panel ON.
E Power OFF Switch Turns the control panel OFF.
F Fan Speed Set Switches
Overrides the automatic fan speed control feature. Increments the fan speed
UP or DOWN in 11 steps. The fan speed set is maintained until it is changed or
AUTO is pressed.
G Cab Temperature Display
Displays the desired cab temperature. To change from Fahrenheit to Celsius,
press the temperature UP and DOWN switches at the same time.
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