Volvo VNL Operator's Manual page 233

228 Cab Interior and Sleeper
VN-660 and VN–770 Side Windows
The VN-770 has four and the VN-660 has
two sleeper side windows that are used for
ventilation. When running the air condi-
tioning, it recommended that the windows
be closed.
In the event of hard rain, the windows
should be closed to prevent water from en-
tering the cab.
The windows also serve as emergency es-
cape exits. In the event of an emergency,
kick the window open and climb out.
The windows are operated with a knob that
is turned clockwise or counterclockwise to
open or close the window.
Do not force the window crank mechanism
in the fully open position. The mechanism
can be damaged trying to open the window
beyond the stop position.
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