Recirculation

The recirculation mode limits the amount of outside air entering the cab. It can be used to prevent dusty or smoky air from entering the cab. The recirculation mode can also decrease the time required to cool or heat the cab interior during extreme outside temperature conditions. Press the recirculation button to activate it, or cancel it. When the recirculation mode is ON, the amber indicator on the recirculation button will be illuminated. See Fig..

Amber Indicator

Fig. 1, Air Selection Modes

The recirculation button will not work when the air-selection switch is in one of the following modes:

• defog mode

• the selection between defog mode and defrost mode

• defrost mode