Micron Technology Turbofan - Manual (Page 19)

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and the coverage assessed viewing the droplets with an ultra-violet lamp in the dark.
5.4
Sequence of Operation
It is important that all sprayheads are rotating at their correct speed before the chemical
supply is turned on. Similarly, the chemical supply must be shut off before the
sprayheads are stopped. This ensures that a stream of chemical does not run out of the
atomisers and that the correct size of droplet is always produced.
When starting the rotation of sprayheads, the speed of the PTO or other hydraulic pump
drive should be reduced to a minimum and then increased to the normal level once the
units are running.
It is not normally necessary to stop the sprayheads every time the chemical flow is turned
off. However, the sprayheads must always be stopped before folding spray booms or if
there is the risk of accidental contact with foliage when turning at the end of a row.
5.5 After
Use
The entire sprayer must be emptied and flushed out with clean water or a suitable solvent
after use. This eliminates the possibility of dried chemical residues blocking valves,
restrictors or atomiser discs. This precaution is particularly important when using
wetable powders as these will tend to sediment in the tank and pipework, causing serious
blockages when the sprayer is next used.
The atomisers should be rotating during the flushing process to distribute the chemical
and flushing liquid into the crop as spray droplets. This also ensures the most efficient
cleaning of the atomiser discs.
6.0 HEALTH AND SAFETY
Any sprayer using Turbofan Sprayheads must be used by a qualified operator in
accordance with the recommendations and statutory requirements for the use of sprayers
and the product being sprayed.
These requirements will be set out in the applicable local legislation and in the label of
the product being used.
In the United Kingdom, the precautions and regulations concerning the use of pesticides
and sprayers are defined in the Code of Practice for the Use of Pesticides on Farms and
Holdings (published by HMSO for the Ministry of Agriculture, Fisheries and Food and
the Health and Safety Commission).
The use of pesticides and sprayers are subject to legislation or codes of practice in most
other countries. It is the responsibility of the user to ensure that these are read,
understood and complied with.