Download Manual - Silvan Australia

Operation
To increase pressure turn
knob clockwise.
To decrease pressure turn
anti-clockwise.
ADJUSTING PRESSURE COMPENSATORS
Silvamatic Controls
2. Setting the Pressure Compensators
The pressure compensators ensure that spraying
pressure remains constant when one or more
boom section is closed or opened during spraying
operations.
At the cabin control, close No.1 section valve with
its switch and observe the pressure gauge. At the
valve block, at the centre of the front crossmember
of the sprayer frame, adjust the red knob
on the side of No.1 valve until the pressure is
restored to the original setting. Screwing the knob
clockwise raises the pressure and screwing it anticlockwise
lowers pressure.
Open and close the section valve several times
whilst observing whether the pressure remains
constant and adjust the compensator if necessary.
Repeat with each section valve in turn and when
all compensators have been adjusted make a final
check by opening and closing each valve in turn
and observing whether the pressure remains
constant. Re-adjust the compensators if necessary
until each valve can be opened or closed without
any change in system pressure.
Once correctly set the compensators will not
require adjustment if the spraying pressure is
changed.
With the sprayer running at operating pressure and
with all boom sections open, check for any leaks
and tighten hoses as required.
Chemicals can now be added to the system.
3. Regular Operation
After the initial trials the following procedure can be
used for regular operation of the Silvamatic
controls.
1. Set the suction valve to “Main Tank”. The rinse
and agitator valves should be closed. Set the
master switch of the cabin control to “Off” and
close all boom switches.
2. Start the sprayer and set the manual pressure
regulator to the required maximum system
pressure.
3. Turn the master switch “On” and set the
required spraying pressure with the pressure
switch.
4. Open and close each boom section switch and
check that pressure remains constant. If
necessary adjust the pressure compensators as
previously described.
5. To commence spraying open the required
boom sections with their control switches.
Spraying may then be stopped and started using
the master switch, so as to maintain the required
boom configuration.
Farmscan Primo 400 Controller – Optional
1. Initial Start-up
On the cabin spray controller, turn the “Master”
switch off and set all boom switches to the closed
position, refer drawing on page 12.
The sprayer should be initially started without
pressure in the system. Switch on the computer
section of the controller, set the unit to manual
control and set the spraying pressure to zero.
Depress the down button for a few seconds to
ensure the electric pressure regulating valve is
fully opened. The motor will wind the valve open
until stopped by its limit switch. Refer to the
Farmscan Operator’s Manual for information on
regulating the pressure.
At the sprayer pressure control panel, open the
manual pressure regulator fully by screwing the
knob anti-clockwise to the end of its travel.
Engage the PTO, or on the Hydraulic Drive Model
open the remote hydraulic flow from the tractor,
and allow the sprayer to run in by-pass mode for a
few minutes. Once it is running satisfactorily the
operating speed can be increased.
Set the controller display to “Pressure” and
progressively increase pressure. For the initial trial
set the pressure to the upper end of the range to
be used for spraying.
Switch all boom sections on and check that all are
spraying.
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