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Curtis Ferris ISX 3300 - Cab Features & Operation; Air Conditioning Operation; Air Filter Access and Maintenance

Curtis Ferris ISX 3300
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CAB FEATURES & OPERATION
AIR CONDITIONING OPERATION
Turn the 4-position ventilation switch to activate the
blower. This can be used as just a blower with the A/C
compressor turned off.
Rotate the A/C switch to the desired temperature
setting to turn the compressor on/off.
In order for the A/C compressor to function, the vehicle
throttle must be set at full speed.
The blower must be turned on in order for the A/C
compressor to function.
AIR FILTER CHECK
Remove the four thumbscrews and washers then
remove the headrest mount from the rear frame.
Remove the two thumbscrews on the face of the A/C
and slide the drawer out to access the air filter.
Change the filter as needed based on operating
conditions.
A/C Controls
Air Filter Access
Thumbscrews
Set Blower Speed
Set Temperature

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