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Spread Pattern Adjustment
We at Chandler Equipment Co. recommend performing a spread pattern pan test prior to
each spreading season, after any spreader maintenance or modification, and periodically
throughout the spreading season. A spread pattern test must be performed for each
product to be applied to insure proper material application.
NOTE: The spinner assembly has NOT been adjusted at the factory. Before spreading,
a spread pattern test must be performed to properly adjust spreader and obtain optimal
spread pattern.
NOTICE: CHANDLER EQUIPMENT CO. WILL NOT BE HELD LIABLE FOR
MISAPPLIED MATERAL DUE TO AN IMPROPERLY ADJUSTED
SPREADER.
WARNING: Use extreme caution while working around the spreader. Any contact
with the spinners or other moving parts can cause injury. Do
not
attempt to adjust any
part of the spreader while the machinery is in use or moving. Wear eye protection and
avoid discharge from spinners. Do not ride on the spreader while in motion.
The spread pattern is affected by several factors, including but limited to the following:
A) Spinner speed.
B) Material properties.
a. Weight per cubic foot.
b. Granular size and distribution.
c. Flow characteristics.
C) Speed of bed chain.
D) Position material is dropped on disc.
E) Division of material between discs.
F) Position of spinner blades on the spinner disc.
G) Cleanliness of spinner assembly.
H) Wear on spinner assembly.
I) Height of spreader.
J) Weather (wind, humidity, etc.)
K) Spread width.
As these factors can vary from one job to the next, a trial and error pan test must be
completed to determine the adjustments that fit your needs the best. As a result,
numerous pan tests may be required to obtain the spread pattern and swath width you
desire. The following instructions are given as guidelines to adjust your spreader and
outline the effect of each adjustment on the spread pattern.