Volvo VNL 780 Operator's Manual page 155

INSTRUMENTS AND CONTROLS 145
Windshield Wiper/Washer
Note: Make sure the ignition is in the Off position to avoid draining the battery.
The wiper/washer functions are operated by the same lever. The wipers have normal and fast
speeds which are activated by moving the lever down one or two positions. To let the wipers
engage for a few passes, lightly depress the lever until the wipers start and hold it there. The
wipers return to the parking position when the lever is released.
The interval wiper function is engaged by moving the lever up. The normal programmed
speed is one pass every 10 seconds. To shorten the interval time, move the lever to normal
wipe position and then to the interval position again when the next wiper pass is desired.
This way, the interval can be programmed between 1 to 10 seconds between each pass.
To operate the windshield washer, pull the lever toward the steering wheel. If washer fluid
needs to be added, use a commercially reputable washer fluid that has good cleaning
capability and does not freeze in cold weather.
An indicator will appear in the DID when the washer fluid level is low. See "Windshield
Washer Reservoir" on page435 for washer level capacity. A 10 second activation delay
allows for fluid slosh.
W3006064
Note: In the VNM 200 Day Cab (Short fairing) the washer fluid indicator is NOT displayed
in the instrument cluster.