Operation
11
Return to
Tank
Fluid from Pump
Filter
The suction filter is fitted with a stop valve which
closes automatically when the valve cap is
screwed off. This allows the filter cover to be
unscrewed and the element to be removed for
cleaning while there is fluid in the tank.
When the sprayer is operating, the valve must be
fully screwed in to open the stop valve and allow
fluid to pass through the filter. Directional arrows
are moulded into the valve cap to show the
opening and closing operation
Three Outlet Control Units
System pressure is regulated by turning the
green knob and observing the reading on the
pressure gauge. Turning the knob clockwise
increases the pressure and turning anti-clockwise
decreases pressure.
Fluid is directed to the boom lines or other
spraying devices by the outlet valves which may
be operated individually. The outlet valves of the
three way control are open when the levers are
vertically up and closed when they are horizontal.
Refer to diagram.
Fresh water tank
To fill the 15 fresh water tank, remove the lid and
fill. Ensure that the lid of the fresh water tank is
not swapped with the chemical fill lid (applicable
only to the 400 & 600 litre models).
Turn the tap fitted to the side of the fresh water
tank to the on position to wash hands.
Warning!
The fresh water tank should only be
filled with fresh water for hand washing or nozzle
cleaning. This water should not be used for
drinking purposes.
Toolbox
To open the toolbox, remove each of the tri-
screws holding the lid secure. Ensure the tri-
screws are secured firmly when closing the lid.
Spray Booms
A variety of booms may be used with Silvan
linkage sprayers depending upon the model and
field application. All have stainless steel spray
lines fitted with non-drip nozzle bodies and air
induction fan jet nozzles. Booms are part of the
standard equipment on some models or in other
cases they may be installed by the dealer.
On all types of boom, the setting of the correct
operating height is most important to achieve a
uniform spraying pattern. This needs to be at a
height above the target which will achieve 50%
overlap of the spray from adjacent nozzles - refer
Calibration section of this manual.
Always ensure that no bystanders are close to
the boom when it is unfolded and that it will not
foul on any other objects.
Field Boom
For transport, the boom is folded horizontally by
swinging the outer arms rearwards through 180
0
until against the fixed centre section, where they
are retained by the action of the hinge springs.
The arms are simply folded outwards to the
spraying position when required.
The rear uprights of the sprayer frame include
open slide channels to enable the boom to be
attached at a height suitable for the tractor size
and spraying application. Final spraying height is
regulated by use of the tractor linkage control
.
Devil Boom
The hydraulic fold Devil boom features
independent left and right hydraulic folding arms
for either one-side or two side operation. The
outer arm fold utilises a push rod that is
connected to the inner fold hydraulic ram. The
outer arm has a spring loaded breakback
mechanism. There is an optional hydraulic lift kit
and optional hydraulic lift with airbag suspension
available with the Devil booms.
Pressure
Gauge
Outlet Valve Open
Pressure Regulator
Outlet Valve Closed
To Spray Lines