6 ADJUSTING THE SPREAD
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It is not possible to establish an exact spreading chart for equipment that make use of the centrifugal
principle, as the distributed quantity depends on the speed, on the radius of distribution, on the quality
and humidity of the fertilizer and the ground conditions.
The fertilizer must always be stored and conserved adequately, so as to keep its physical features. It is
important to set the speed of the towing vehicle before starting the distribution operation, and trying to
keep it constant for all its duration.
The spreading charts just contain the indicative information, in order to determine the quantity to spread
in the fi elds; these must be completed by the experience and the competence of the operator.
6.1 DISTRIBUTOR VANE ADJUSTMENTS
The distributor disc is equipped with six adjustable vanes that can be adjusted to three different posi-
tions. The spreader is delivered with the fi ns in central position "2" which has been found to be the ideal
position to assure the uniformity in distribution for most of the fertilizers on the market.
If you notice a not uniform fertilizer spreading (more from one side than the other), it will be necessary
to move the distributor vanes until the right adjustment is achieved. Generally it is suffi cient just move
the two opposite vanes to obtain good results.
If the mentioned adjustment was not suffi cient set the same adjustment on the other opposite vanes. For
example, if you notice a greater spreading on the left side (in relation to the advance direction of the ma-
chine), shift the two opposing vanes in the slot to position "3". If the spreading is not yet uniform even
after this adjustment, move in position "3" other two opposite vanes.
If the fertilizer distribution is greater on the right side, shift the vanes to position "1".
Distributor Disc Vanes Adjustment
