DETAILED CONTROLS AND GAUGES OPERATION 3. Press temperature setting switch (3) and adjust tempera- ture inside the cab. 4. Press vent selector switch (4) and select the desired vents. When this is done, the display for vent (c) of the display monitor changes according to the selection. 5. Press RECIRC/FRESH selector switch (6) and select recir- culation of the air inside the cab (RECIRC) or intake of fresh air from outside (FRESH). 3-42