g319658
Figure 23
1.
Spreader moving towards
pans
4.
Right collection pans (no
gap between each)
2.
Center collection pan
5.
L1 and R1 collection pan
gap (spread apart to allow
machine to pass through)
3.
Left collection pans (no
gap between each)
6.
Graduated measuring
cylinder
4.
Refer to the
Spreading Charts (page 32)
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....) (refer to
and
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
Pattern Adjustment (page 29)
.
12.
Repeat steps
through
until a uniform pattern
is achieved.
Determining the Effective
Spreading Width
The effective width is used to determine the uniform
distribution of the material.
Note:
The spreading width range is 0.9 m (3 ft) up
to 7.6 m (25 ft).
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 half 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 93 m
2
(1,000 ft
2
). Use the
recommended rate from the
section or the product
manufacturer’s label as a guide.
B.
Determine a course length by dividing by
the effective spread width.
For example, if the effective width is 1.8
m (6 ft), then the calibration course length
equals 51 m (167 ft).
Course Length
93 m
2
(1,000 ft
2
)
1.8 m (6 ft)
=
51 m (167 ft)
C.
The calibration course is 1.8 m (6 ft) by 51
m (167 ft).
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 (refer to
the
Spreading Charts (page 32)
section as a
starting point).
4.
Add material to the hopper (for example, 11.3
kg (25 lb) was added).
5.
Drive the spreader over the calibration course
while applying the material.
28
