User manual

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Sample computation for checking and
determining dosage of spray com-
pound
Bases:
Spraying pressure 1.5 bar
Nozzle 1 mm hollow cone
Spraying height 50 cm
Dosage 0.5 % (see pesticide
manufacturer’s in-
structions)
This means:
Quantity required 0.42 l/min
Spraying width 50 cm
Angle of spray 55°
Quantity of spray compound
per m
2
: 0.06 l, = 600 l/ha
(see pesticide manufacturer’s
instructions)
To mix 1 l spray compound:
1 l water + 5 ml compound
(5 ml = 0.5 % of 1 litre)
With a spraying width of 50 cm, a length of
2 m equals a sprayed area of 1 m
2
.
Speed of spraying:
Quantity sprayed per minute x distance
Quantity of spray per m
2
0.42 l x 2 m
min. x 0.06 l
= 14 m/min.
The figures on which this sample computa-
tion of the dosage and the quantity of spray
compound required per m
2
are based have
been assumed for that purpose.
When using the sample computation, the
figures given by the manufacturer of the re-
spective spray compound must be used. If
other nozzles are used, the appropriate tech-
nical data must be taken from the separate
sheet 976 559 (Optional Accessories
and Nozzle Table) ** and used in the
computation.
Spraying
● To obtain as even a spray pressure and as
long a spray cycle as possible, set the
pressure regulator on the quick close valve
(10 litre units only) at the minimum per-
missible pressure e.g. 1.5 bar
(see
Fig. ).
● To start the spraying process push the
operating lever on the quick close valve
down. Releasing the operating lever will
stop the spraying process immediately.
● If the pressure in the tank falls below the
minimum permissible pressure, work the
pump a little to ensure an even spray. The
optimum spraying pressure for the 1 mm
hollow cone spray is between 1.5 and 3
bar.
● When spraying, ensure that the plants are
wetted evenly.
● Pay attention to the direction of the wind!
Do not spray into the wind.
● The optimum distance from the nozzle to
the plant being sprayed is between 40
and 50 cm.
● When using special spraying lances (ex-
tension lances, wide spray lances etc.),
set the pressure higher on the pressure
regulator.
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