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www.New-Leader.com
(800) 363-1771
313974-AA-B
NL4500G4 TRIDENT
Header
Spread Pattern
Spinners
NOTICE!
Spinner discs and
fi
ns must be kept clean and polished. Even a small build-up on a spinner
fi
n can
signi
fi
cantly affect the spread pattern. Rusty, rough, bent or worn
fi
ns will produce poor spread
patterns.
In general, critical spinner speed will fall somewhere between 600 and 900 RPM. Spinner speed is adjusted
by changing the settings in the controller. Proper spinner speed adjustment is critical in obtaining optimal
spread patterns. The best spinner speed to use will depend entirely on the material being spread, and
must be determined by testing.
A major factor of maximum pattern width is particle size. Swath width may vary anywhere from 25 feet (7.6
m) for very
fi
nely ground dry lime up to 120 feet (37 m) or more for extremely large fertilizer pellets.
For every material there is a critical spinner speed. In other words, there is a speed which will result in
the maximum obtainable spread width. Going beyond this speed will not increase spread width, but will
degrade, or crush material.
Too high of a spinner speed could result in a heavy deposit behind the truck due to break-down of material.
This upper speed limit will be quite low for
fi
nely powdered material, and can be quite high for extremely
coarse materials.
Spreader Preparation
The spreader to be tested must be in good mechanical condition and properly adjusted. Refer to operator’s
manual for details .
All damaged and worn parts must be replaced. Spinner discs and
fi
ns must be free of any material build-
up, rust or paint.
Fill the hopper with the material to be spread. Run the material out to the end of the conveyor.
Set the feedgate and the in-cab controller to deliver the required rate per acre. Make sure the feedgate
is level and the indicator re
fl
ects the actual gate opening measured by standing a tape measure vertically
in the material.
NOTE:
Do not match slope of endgate when making this measurement. Measurement must be
perpendicular to conveyor.
Adjust the spinner assembly by turning the crank or, if an actuator is installed, change the setting in the
controller. To begin testing, position the spinner according to the chart below.
NOTE: This chart is to be used as a reference only to begin testing.
