Example - Toro 09830 Operator's Manual

Hydroject injection system for hydroject aerators
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The path length = 100 feet.
7.
Aerate the 100-foot length normally.
8.
Record the volume necessary to refill the
chemical tank to the marked level.
9.
Adjust the ratio adjuster on the injector and
repeat steps 7 and 8 above until the desired
number of ounces of tank mixture is used.
Ounces of Additive per 1000 square feet
Tank
Concentration
1:100
(percent)
(1%)
10
2.1
20
4.2
30
6.4
40
8.5
50
10.6
60
12.7
70
14.8
80
17.0
90
19.1
100
21.2
8.
Calculate the amount of tank mixture used to get
a given application rate using the formula:
Application Rate
(3.0-inch hole spacing)
Injector Ratio
1:128
(0.8%)
1.7
3.3
5.0
6.6
8.3
9.9
11.6
13.2
14.9
16.6

Example

Say you want to apply an additive at an approximate
rate of five (5) ounces per 1000 square feet.
1.
Refer to the 3.00" Hole Spacing table shown
below. The table shows that to apply additive at
a rate of five ounces per 1000 square feet, the
ratio adjuster should be set to 1:128 (0.8%) and
the tank mixture concentration should be 30
percent.
2.
Set the ratio adjuster to 1:128 (0.8%).
3.
Carefully add the additive to the chemical tank
until it reaches the 30 (percent) line.
4.
Fill the tank with fresh filtered water, then stir.
5.
Drain 20 ounces from the chemical tank and
save.
6.
Mark the level on the chemical tank.
7.
Measure out 100 feet on some test turf.
1:200
1:500
(0.5%)
(0.2%)
1.1
0.4
2.1
0.8
3.2
1.3
4.2
1.7
5.3
2.1
6.4
2.5
7.4
3.0
8.5
3.4
9.5
3.8
10.6
4.2
Operation
17

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