TeeJet 844 Sprayer Control - Manual (Page 33)

31
THE SPRAYING OPERATION
You have filled 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.
■ Switch the computer on by depressing the key on the display panel.
■ Toggle the boom switches to their “on” position, for each of the booms on
your sprayer.
■ Take note of the “numbered” booms on each side of the sprayer, so that the
appropriate boom can be toggled “off” as necessary.
■ The Auto/Manual key should be switched to “AUTO.”
■ 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.
■ On flow 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.
■ 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 field 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 flow
beyond the limit.