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844E Sprayer Control
THE SPRAYING OPERATION
You have
fi
lled the sprayer tank and have thoroughly mixed the chemical(s).Your application rate has been
determined as well as the spray tip you will be using, with the sprayer data programmed into the computer.
1. Switch the computer on by pressing the
key on the display panel.
2. Toggle the boom switches to their “on” position, for each of the booms on your sprayer.
3. Take note of the “numbered” booms on each side of the sprayer, so that the appropriate boom can be toggled
“off” as necessary.
4. The Auto/Manual key should be switched to “AUTO.”
5. In the Auto mode, when the master boom switch is “off”, the target application rate as well as the
symbol
will be displayed in the console display. When the master boom switch is “on”, the actual rate will be displayed
and the
symbol will no longer appear.
6. On
fl
ow based models, the lower right corner of the display will alternate displays of the application area
(“Ac” for acres or “Ha” for hectares) and the total volume applied. The display will alternate approximately
every three seconds.
7. While spraying with the master boom switch “on”, the display window will always display the actual application
rate, vehicle speed, pressure and application area covered/total volume applied simultaneously.
As you enter the
fi
eld to the point where you will begin spraying, turn the MASTER boom switch to “on” position.
This will activate the spraying operation. Maintain your usual vehicle speed for spraying. Moderate changes in
vehicle speed will not affect your application rate, because such changes are compensated by automatic pressure
increases or decreases.
If for any reason you need to stop, turn the MASTER boom switch to “off.”
Alarm warnings can occur momentarily while the pressure regulating valve is searching for a new setting after the
closing of a boom section or other change in normal operation. However, if the alarm stays on for a longer time,
the valve may have reached its limit and your system will be unable to regulate
fl
ow beyond the limit.
