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Figure 31
1. Spreader moving towards
pans
2. Center collection pan
3. Left collection pans (no
gap between each)
4.
Reference the Spreading Charts section to
determine the appropriate rate dial setting.
5.
Fill the hopper approximately half-full with the
desired material.
6.
Set the impeller speed to the appropriate
broadcasting rate.
7.
Pull the Spread Open/Close handle to the
open position and drive the spreader, at the
appropriate speed, over the center pan. Repeat
this several times, moving in the same direction
each time, until enough material is dispensed
to fill the center graduated measuring cylinder
half full.
8.
Label each graduated measuring cylinder to
correspond with the distribution pans (i.e. ...L2,
L1, Center, R1, R2....) (reference
Figure
31).
9.
One at a time, take a collection pan and dump
the contents into the corresponding graduated
measuring cylinder. Record the amount of
material collected and return the pan to its
location. Repeat this until all pan contents have
been emptied.
10.
With the graduated measuring cylinder in the
same straight line as the pans, evaluate the
volume of material in each cylinder to determine
the quality of the distribution from the spreader.
11.
To adjust the spreader pattern, refer to the
Spreader Pattern Adjustment section.
12.
Repeat steps
5
through
pattern is achieved.
g319658
4. Right collection pans (no
gap between each)
5. L1 and R1 collection pan
gap (spread apart to allow
machine to pass through)
6. Graduated measuring
cylinder
Figure 30
and
11
until an uniform
Determining the Effective Spreading Width
The effective width is used to determine the uniform
distribution of the material.
Note:
The spreading width range is 3 ft (0.9 m) up
to 25 ft (7.6 m).
1.
After the spreader pattern is correctly adjusted,
evaluate the amount of material in the center
graduated measuring cylinder.
2.
Locate the two tubes, one each side of center,
that contain 1/2 the measured amount of
the material that you observed in the center
graduated cylinder.
3.
Go to the two corresponding pans. Starting
from the outer edge, measure and record the
distance between left pan, through the center
pan, to the outer edge of the right pan.
Note:
This measurement is the effective
spreading width.
Calculating the Application Rate
1.
Determine the amount of product to be applied.
2.
Determine the calibration course
A.
Determine the amount of product
to be spread per 1,000 ft
Use the recommended rate from the
Spreading Charts section or the product
manufacturer's label as a guide.
B.
Determine a course length by dividing 1,000
ft
2
(93 m
2
For example, if the effective width is 6 feet
(1.8 meters), then the calibration course
length equals 167 ft (51 m).
Course Length
1,000 ft
2
6 ft (1.8 m)
C.
The calibration course is 6 ft (1.8 m) by 167
ft (51 m).
D.
Measure and visibly mark the course length.
Make sure to allow ample distance before
the starting marker to ensure the spreader
is at full speed when crossing the first mark
of the course.
3.
Set the appropriate gate dial setting (reference
the Spreading Charts section as a starting
point).
4.
Add material to the hopper (for example, 25 lb
(11.3 kg) was added).
5.
Drive the spreader over the calibration course
while applying the material.
34
2
(93 m
) by the effective spread width.
(93 m
2
)
=
167 ft (51 m)
2
).
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