16
4
Calibrate ALL section valves before running a treatment; the calibration can be done as follows, depen-
ding on the configuration of the control unit:
• EQUAL section valves:
you need only calibrate one single valve, then set the graduated scales of all the others to the same mark.
• DIFFERENT section valves:
each section valve must be calibrated independently.
• MIRRORED section valves
(Fig. 6):
you need calibrate only one part of the control unit (right or left boom, valves
A
and
B
): calibrate the
other part of the boom by setting the corresponding metered by-passes to match the valve settings on
the section of boom already calibrated (Fig. 6).
Fig. 6
If the types of nozzle are not changed, the adjustments made will safeguard a uni
-
form distribution of liquid even when spraying needs differing levels of operating
pressure.
