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Before Returning to Refill the Sprayer
If the sprayer is to be refilled at the farm, or at a fixed filling place without a filling space with hard surface and drain to a
closed reservoir, the sprayer should be rinsed before returning to refill.
Dilute the residues of the spraying circuit, and spray it on the crop. Now rinse the sprayer on the outside with the External
Cleaning Device (optional equipment), before returning to the farm.
±
WARNING! Always follow local legislation in force at any time
Parking the sprayer
To avoid spot contamination, the sprayer should always be parked at either the washing/filling location or under roof.
This prevents rainfall from washing down chemical residues from the sprayer's surfaces.
• Parking at the washing/filling location will retain residues.
• Always park the machine out of reach of children, animals and unauthorized persons.
• Always follow local regulations when parking your sprayer.
Liquid Fertilizer
Spraying pressure
If you are spraying with liquid fertiliser instead of pesticides, the spraying pressure must be increased in comparison to
pesticide spraying to get the desired output (l/ha).
The density for liquid fertiliser is normally higher than for water and spray liquids - so to get the correct output (l/ha), the
spraying pressure must be adjusted.
Example:
Nozzle output is 2.40 l/min at 3.0 bar pressure. Density of liquid fertiliser is 1.20 g/cm³.
Multiply the pressure value with the density value: 3.0 x 1.20 = 3.6.
The adjusted pressure is now 3.6 bar for spraying the liquid fertiliser.
In the table below, adjusted pressure values can be found for different densities of liquid fertilisers.
Calibrated pressure (bar) when spraying with
pesticides
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
μ
ATTENTION! Pressure values below 1.5 bar or above 5.0 bar are considered to be out of range for the nozzles.
÷
NOTE! Find the density for your liquid fertilizer on the packaging or on the material safety data sheet (MSDS) included.
Additional Information
See the other book delivered from HARDI - Spray Technique - to get further information about:
• Calibration of the sprayer
Density (g/cm³) for liquid fertiliser
1.10
1.15
Adjusted pressure (bar) when spraying with liquid fertilizer
1.7
1.7
2.2
2.3
2.8
2.9
3.3
3.5
3.9
4.0
4.4
4.6
5.0
5.2
5.5
5.8
5 - Operation
1.20
1.30
1.8
2.0
2.4
2.6
3.0
3.3
3.6
3.9
4.2
4.6
4.8
5.2
5.4
5.9
6.0
6.5
1.40
2.1
2.8
3.5
4.2
4.9
5.6
6.3
7.0
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