Great Plains 3P-FF900 Operator Manual - Manual (Page 32)

3P-FF600, 3P-FF800 and 3P-FF900
500-643M 12/8/2009
30
Boom Height
After calibrating your sprayer for the specific noz-
zle you will use at a desired pressure, and tractor
speed, the main field adjustment is the boom
height. Depending on which type of nozzle you
are using, you need to set your boom height so
that you achieve the correct overlap for that spe-
cific nozzle. If the crop canopy is taller in some
fields than others, you will need to adjust the
boom height accordingly. Refer to the nozzle
charts located in this manual to determine the
height of the boom needed. Use the elevator
gauge as a height reference.
EXAMPLE: A 2.5 MeterCone nozzle at 20 inch
spacing is being used. From the nozzle chart {re-
fer to the Application Guide}, a height of 19 to 21
inches above the top of the crop is required. If the
crop is 6 inches off the ground, the boom height
should be set to 25 to 27 inches off the ground.
Nozzle Pressure
Another area that will need some field adjust-
ments is the nozzle pressure. As your tank level
decreases, you may have to adjust the boom
pressure to keep the pressure at the same mag-
nitude for what the sprayer was calibrated for if
your sprayer is not equipped with a monitor.
Watch your pressure gauge and be aware of
changes in the pressure.
Adjustments