Download Manual - Silvan Australia

Operation
At the sprayer pressure control panel, set the
maximum system pressure with the regulator while
observing the pressure gauge. Turning clockwise
increases pressure and turning anti-clockwise
decreases pressure. Set the system pressure
higher than that to be used for spraying but below
the maximum safe working pressure of 20 Bar.
Spraying is normally carried out in the range of 2 to
4 Bar but the maximum system pressure should be
set at least 50% higher so that the pressure
regulator can function correctly.
With the cabin spray controller, adjust the
application rate to that required for spraying. Refer
to the Calibrating the Sprayer section for
information on spraying rates and pressures.
2. Starting Procedure for Regular Operation
After the initial trials the following starting
procedure can be used for regular spraying using
the Farmscan controller.
1. Set the suction valve to “Main Tank”. The rinse
and agitator valves should be closed.
2. Set the cabin spray controller power switch to
‘on’ and the master switch to ‘off’ and close all
boom switches.
3. Start the sprayer.
4. Set the manual pressure regulator to the
required maximum system pressure.
5. Set the required application rate with the cabin
spray controller.
6. Set the cabin spray controller master switch on
and open and close each boom section to
check that it is functioning.
7. To commence spraying open the required
boom sections with their control switches.
8. Spraying may then be stopped and started
using the master switch on the cabin spray
controller, so as to maintain the required boom
configuration.
Pump Operating Speed
Under most spraying conditions the sprayer can be
operated at less than the maximum pump speed of
540 rpm.
The tractor engine speed can be reduced under
most conditions to save fuel and unnecessary
wear. The speed chosen should ensure that the
pressure set at the relief valve can be maintained
when all boom sections are operating, so that fluid
is by-passed to the tank to maintain agitation.
The hydraulic flow available from most tractors at
rated engine speed exceeds the requirements of
the hydraulic drive model. If the tractor is fitted with
a load sensing hydraulic system with a variable
flow control this can be used to reduce the rate.
Adding Chemicals
Before adding chemicals read and
follow the chemical manufacturer's
instructions and wear the
recommended protective clothing.
Chemicals can be added to the tank through the
top opening or more safely and conveniently
through the Silmix inductor.
The Silmix is ideal for adding and thoroughly
mixing powdered or granulated chemicals and is
fitted with a probe for inducting liquid chemicals.
Before adding any chemicals fill the tank with
approximately 600 litres of water.
Switch the suction valve to “Main Tank” and run
the sprayer to circulate the mixture whilst
chemicals are being added. Ensure the boom
sections are switched off so that the pump output
will be by-passed at the relief valve and returned to
the tank to mix the solution. The venturi agitator
can also be switched on to improve the mixing of
the solution.
When all chemical has been added, continue filling
the main tank with water and keep the sprayer
running to thoroughly mix the solution.
Take care to avoid the spillage of chemicals or
mixed solution. Wear gloves, eye protection and
the recommended protective clothing whilst filling
with chemicals. Wash your hands after filling if they
have come into contact with concentrate or mixed
solution.
Store unused chemicals and dispose of empty
chemical containers as recommended by the
chemical manufacturer or relevant authority.
Adding Chemicals through the Top Opening
If adding chemicals through the top opening use
the folding steps to access the sprayer platform.
When adding liquid chemical remove the inner
screw lid and use the basket strainer. If adding
powdered chemical remove the outer section of
the screw lid and remove the basket strainer.
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