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unigreen 21
6.4.2 TREATMENTS ON HERBACEOUS CULTIVATIONS
a) Use the tables of pages 31-33 choosing the one relevant to the type of
cannon to use and the number of jets.
b) Find the range and the diameter of the nozzles used (ceramic plate or TR
nozzles).
c) In the horizontal strip, choose the working speed and the distribution in
litres/hectare and on the vertical scale find the pressure to use.
d) Adjust the pressure to obtain the treatment required.
Note: the minimum range indicated in the table can vary significantly
according to the adjustment of the single jets (screwed in more or less).
To verify the exact delivery of the fan do tests with clean water.
7 HAND LANCES
When using hand lances bear in mind the following notes:
= Don’t direct the jet of liquid towards electric power lines or zones where
there is electrical current, houses or where people might pass.
= Don’t point the jet at people or animals.
The jet can cause serious injuries simply due to the mechanical force of the
liquid under pressure.
= Never block the spraying lever of the lance in an open position because if
the lance falls it will be uncontrollable.
= At the end of work after you have stopped the pump, make sure that any
residual pressure in the pipes under pressure has been drained to avoid
unexpected jets when putting the lance away.
There are various types of lances; with a lever, mitra spray gun and pistol grip.
For further information please refer to the handbook in the package.
The lever lance is controlled by opening lever A which, depending on how
much it’s pressed, produces a conical spray or direct jet. The standard nozzle
is Ø 1.5
The mitra spray gun can produce a direct jet or a conical spray and the type
of spray is selected by pushing lever B forwards or backwards. Use lever C to
open the jet. The standard nozzle is Ø 2.5
Replacement nozzles are available for all of the lances and the capacities are
indicated in the tables TAB.4 and TAB.5 ( page 34).
C
B
A