HARDI-EVRARD ALPHA PLUS 4100 - Air Assistance System; Air Speed and Volume Settings; Air and Liquid Angling Adjustment

ALPHA PLUS HARDI NOVA
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Carry the spray droplets safety to the target and increase plant deposit
Minimize off-target deposit due to wind drift or loss on the ground
Open the crop and obtain good penetration even with a low volume rate
Ensure a high coverage
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With TWIN air assistance, energy is added to the spray droplets to improve control with the spray liquid.
Using TWIN it is possible :
The fan speed is infinitely variable and can produce from 0 to 35 m/s (78mph) air speed at the air outlet.
This equals from 0 to 2000 m
3
air/m boom/hour (3,872 CFM/A boom/hour).
The air speed must be adjusted to the spray job. The tables below give a guide line.
Air asssistance
Low Medium High(H) Very high (VH)
Air speed (m/s) 5-10 10-20 20-30 30-35
Fan r.p.m. 400-1000 1000-1900 1900-2700 2700-3100
Oil pressure (bar)
Boom 18 m 20-40 40-75 75-125 125-180
Boom 20-21 m 25-50 50-90 90-150 150-200
Boom 24-28 m 30-70 70-140 140-190 190-240
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The main purpose of the TWIN angling system is to counteract for the negative influence which wind direc-
tion and driving speed have on the quality of the spray job. Further the ‘’co-angling’’ at air and liquid can help
‘’opening’’ dense crops for better penetration.
The TWIN FORCE air system can be set at any angle from 40° forward to 30° back (defined by air stream)