Volvo VNL 780 Operator's Manual page 110

100 INSTRUMENTS AND CONTROLS
OR
Engine Air Control Switch
The engine fresh air control switch controls air flow to the engine air cleaner. In the normal
OFF position, air is pulled through the side hood vent, and into the air cleaner. In the ON
position, air is pulled from within the engine compartment into the air cleaner. This feature
is useful for keeping out cold air or snow for example, when using a snow plow.
W3005380
Engine Air Control Switch
22. Air Vent
For information about air vents, refer to "Fresh Air Vent" page 154.
23. Radio
For information about the radio, refer to the radio operating instructions manual.
24. - 28. Cab Climate Controls
For information about cab climate controls, refer to "CLIMATE CONTROL SYSTEMS"
page 114.