TTi’s
OnDeck
™
HandBook
18
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18
Spraying Consideration
For effective spraying ensure you have taken the following factors into account.
1. Work Rates
• Speed of operation
• Water points or nurse tanks
• Rate of travel
• Swath width
• Spray volume applied
2. Wind and Drift
• Wind Speed
• Wind Direction
• Airspeed at boom height
Avoid spraying on still warm days as convection currents may cause drift in
unpredictable directions.
Optimum wind speeds are between 3km/h to 7km/h
• Wind direction and drift is controlled by;
Reducing nozzle height
Reducing pressure and using larger nozzle
Fit low-drift nozzles producing larger droplets
3. Field Work (
see diagram
)
Swath marking and spraying
• Mark out to ensure proper pass matching –
use flags foam markers or tramlines
• Where large obstructions exist in the middle
of an area to be sprayed, mark out and
spray the area like a separate headland
• The perimeter of the field should be
sprayed first. The width of two swaths will
give adequate turning space at the ends
of spray runs
• Never spray while turning
4. Speed
• Maintain a constant speed when spraying. Should you need to increase your
spraying speed, larger delivery nozzles must be fitted. Re-calibrate as required
Spraying
Guide
Spray
Decontamination
OPERATORS HANDBOOK 9
SPRAYING CONSIDERATION
For effective spraying ensure you have taken the following factors into account
1. Work Rates
• Speed of operation
• Water points or nurse tanks
• Rate of travel
• Swath width
• Spray volume applied
2. Wind and drift
• Wind Speed
• Wind Direction
• Airspeed at boom height
Avoid spraying on still warm days as convection currents may cause drift in unpredictable
directions.
Optimum wind speeds are between 3km/h to 7 km/h
• Wind direction and drift is controlled by;:
• Reducing nozzle height
• Reducing pressure and using larger nozzles
• Fit low-drift nozzles producing larger droplets
3. Field Work (See diagram below)
Swath marking and spraying
• Mark out to ensure proper pass matching – use flags foam markers or tramlines
• Where large obstructions exist in the middle of an area to be sprayed, mark out and spray
the area like a separate headland.
• The perimeter of the field should be sprayed first. The width of two swaths will give
adequate turning space at the ends of spray runs.
• Never spray while turning.
4. Speed
Maintain a constant speed when spraying. Should you need
to increase your spraying speed, larger delivery nozzles
must be fitted. Re-calibrate as required
OPERATOR HANDBOOK
8
CONSIDERATIONS WHEN SPRAYING
For effective spraying ensure you have taken the following factors into account
1. Work Rates
•
Speed of operation
•
Water points or nurse tanks
•
Rate of travel
•
Swath width
•
Spray volume applied
2. Wind and drift
•
Wind Speed
•
Wind Direction
•
Airspeed at boom height
Avoid spraying on still warm days as convection currents may cause drift in unpredictable
directions.
Optimum wind speeds are between 3km/h to 7 km/h
•
Wind direction and drift is controlled by;:
•
Reducing nozzle height
•
Reducing pressure and using larger nozzles
•
Fit low-drift nozzles producing larger droplets
3. Field Work
(See diagram below)
Swath marking and spraying
•
Mark out to ensure proper pass matching – use flags foam markers or tramlines
•
Where large obstructions exist in the middle of an area to be sprayed, mark out and spray
the area like a separate headland.
•
The perimeter of the field should be sprayed first. The width of two swaths will give
adequate turning space at the ends of spray runs.
•
Never spray while turning.
4. Speed
Maintain a constant speed when spraying. Should you need to increase your spraying speed, larger
delivery nozzles must be fitted. Re-calibrate as required
www.tti.com.au
Call 1800 816 277
• After use, the sprayer must be thoroughly decontaminated including tank,
pump, hoses, boom and hand lance to avoid damage to crops from harmful
spray residue and to the sprayer from corrosion or abrasion.
• After spraying, flush the tank, hose, boom, and hand lance by running it with
clean water plus recommended cleaning fluid. It is best to clean sprayers in
the field or area just treated.
• The suction strainer attached to the pump suction line should be cleaned
periodically. Lift the strainer from the base of the tank and brush off with a soft
brush.
• Nozzle filters (if fitted), nozzle tips, nozzle caps and gaskets should be cleaned
by soaking in water, brushing with a nozzle brush and allowed to dry. Never blow
through nozzles with your mouth, not use wire or pins to clear any blockages.
• Unscrew the hand lance grip and remove the filter screen and clean in the
same way as described for the suction strainer. Ensure that the o-rings do not
become displaced during cleaning. Re-assemble the hand lance correctly.
• Aligning the filter screen in the handle body before the hand lance grip is
screwed back.
• Check tyre pressure.
• When storing your sprayer ensure that it is clean and dry and kept in a well
ventilated place.
9
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tti
.com.au |
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TTi -
Operators Handbook
