Toro 34230 Operator's Manual page 27

Calibrating the Spreader
Calibrate the spreader each time you use a new
material. The spreader broadcasts material in a
pattern 1.5 to 6.7 m (5 to 22 ft) wide depending on the
material particle size, volume/density, rate of travel,
and wind conditions.
Use the Spreading Charts (page 32)
information from Determining the Distribution Pattern
(page 28), Determining the Effective Spreading Width
(page 28), and Calculating the Application Rate (page
28) when calibrating the spreader.
Preparing the Test Site and Machine
Operator supplied equipment: 15 shallow collection
pans and 15 graduated measuring cylinders
Note:
The most accurate method to measure
the distribution uses shallow collection pans and
graduated measuring cylinders. In the example below,
the 15 shallow collection pans approximately 30 cm
(12 inches) wide, 91 cm (36 inches) long, and 5 cm
(2 inches) tall.
1. Place one pan in the center of the drive path.
Arrange the next two pans, one on each side,
far enough apart to allow adequate room for the
drive tires of the machine to pass around the
center pan.
2. Place the remaining pans in a straight line as
shown in Figure 28
•
For larger granule materials:
Space 6 additional pans, on each side, 12
inches (30 cm) apart
Figure 28
Pan spacing for larger granule materials
1. Spreader moving toward
pans
2. Center pan
3. Collection pans (gap
between each)
•
For small granule materials:
along with
or Figure 29.
(Figure 28).
4. L1 and R1 collection pan
gap (spread apart to allow
machine to pass through)
5. 30 cm (12 inch) gap
6. Graduated measuring
cylinder
Place 6 additional pans, on each side, with
no gap in between each pan
Pan spacing for small granule materials
1. Spreader moving toward
pans
2. Center collection pan
3. Lest collection pans (no
gap between each)
3. Move the machine far enough away from the
test area (where the collection pans are located)
to ensure that the machine travels at the desired
spreading speed before reaching the site.
4. Determine the application rate and the related
drop-rate cam setting; refer to
(page 32).
5. Rotate the drop rate cam
setting you determined in step 4.
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1. Drop rate cam
6. Fill the hopper approximately half-full with the
desired material; refer to
Hopper (page
27
(Figure
Figure 29
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
Spreading Charts
(Figure 30) to the cam
Figure 30
Filling the Spreader
29).
29).
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