Micron Technology Turbofan User Manual
Page 8
DRAFT
7
IMPORTANT: Sprayheads must never be positioned so that spray droplets can be
blown towards the driver or operator of the sprayer. Ensure that all spray is blown
clear of the sprayer structure to eliminate contamination and run-off.
4.1.3 Angle of Sprayheads
Sprayheads should normally be angled so as to maximise the width of the band of spray
deposited and to allow the turbulent airstream to disturb foliage in order to achieve
maximum penetration and under-leaf coverage.
Sprayheads mounted on horizontal booms should face backwards with the axis of the
atomiser at an angle of 30 – 45 degrees to the vertical for fungicide and insecticide
application. However, they should face downwards at 0 – 10 degrees to the vertical for
herbicide or liquid fertilizer application.
Sprayheads used to spray sideways on tree or bush crops should face outwards from 0 –
45 degrees backwards to the direction of travel and should also be angled upwards or
downwards according to the foliage to be sprayed.
4.2 Hydraulic
System
Hydraulic power for Turbofan Sprayheads can be provided either from the tractor
hydraulic system or from an hydraulic pump driven by the power take-off (PTO) if there
is not sufficient capacity from the tractor.
The following notes are intended as a guide to the design of the hydraulic system and the
choice of components. When building a system it is vital that all components should
be selected so as to have a safe working pressure well in excess of the operating
pressure, taking into account the harsh environment of an agricultural operation.
4.2.1 Hydraulic
Configuration
•
It is recommended that Turbofan Sprayheads are normally connected in parallel
•
Drain lines must be fitted to all motors.
It is possible to connect Turbofan Sprayheads in series but the numbers of motors in each
series chain should be limited to two. It is important to note that the pressure drop across
series pairs of motors is approximately 200 bar which is higher than most tractor
hydraulic systems can provide. Drain lines must also be fitted to all motors connected in
series.