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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. 20
Operation Empty Valve open Knife Valve SILMIX CHEMICAL INDUCTOR In lowered position Empty Valve Powder Washer Valve Drum Rinser Valve Adding Chemicals with the Silmix The Silmix operates through an adjustable 50 mm venturi inductor connected to a pressure hose from the sprayer pump. Chemicals are transferred from the hopper to the bottom of the main tank with the sprayer running to recirculate and thoroughly mix the solution. The 60 litre hopper has a hinged lid with a rubber catch and includes a mesh grate to prevent blockages from large particles. The knife valve beneath the hopper is opened by pulling the handle out when the Silmix is to be used and closed after use. The hopper is mounted on a linkage incorporating adjustable support springs that enable it to be easily lowered to a convenient height for use, or raised to provide clearance while spraying. The linkage is secured by a safety latch, which must be lifted before lowering and reset when raised. To operate the Silmix first open the “On/Off” valve on the sprayer pressure control panel. The three valves on the hopper then control Silmix functions. The “Empty” valve directs high pressure fluid to the venturi to draw chemicals from the hopper into the tank. It should also be open when the “Powder Wash” or “Drum Rinse” valves are in use. The ”Powder Wash“ valve directs pressurised fluid to the hopper spraybars to mix powdered chemicals or to rinse the hopper after use. The “Drum Rinse“ valve sprays pressurised fluid through a rotating nozzle to wash empty chemical drums that are inverted over the nozzle. When all chemicals have been added close the Silmix “On/Off” valve and the knife valve. Knife Valve closed SILMIX CHEMICAL FILLING PROBE Silmix in raised position. Probe Valve Continue the water filling process with the sprayer running in by-pass to thoroughly mix the solution. When completed lift the Silmix and apply the safety latch before moving the sprayer. Using the Silmix Probe Liquid chemical may be transferred to the main tank via the Silmix using the inductor probe. The original container can be used or a measured amount of chemical can be decanted into a suitable container. With the sprayer running in by-pass mode close the knife valve, open the “On/Off” valve on the sprayer control panel and open the “Empty” valve. Place the probe in the container and open its valve by turning the handle to align with the probe. Chemical will be drawn from the container and transferred to the tank. When the container is empty, shut the probe valve and place the probe in its transport holder. Close the Silmix tap on the sprayer pressure control panel. Continue the water filling process with the sprayer running to thoroughly mix the solution. Before spraying ensure the probe valve is fully closed. Venturi Agitator The venturi agitator provides additional mixing of the solution within the main tank over that created by the fluid by-passed from the relief valve. It is operated by the Agitator valve on the pressure control panel. Turning the valve on directs pressurised fluid from the pump to a venturi jet in the rear of the main tank. The pressure drop caused by the fluid passing through the venturi draws solution from within the tank and entrains it with the discharge from the jet. This keeps the solution circulating within the tank and prevents chemicals from settling. 21
Page 1 and 2: Operator’s Manual MANBA07 - Rev A
Page 3 and 4: Contents Page Introduction 2 Warran
Page 5 and 6: New Product Warranty WARRANTY POLIC
Page 7 and 8: Safety Information Locations of Saf
Page 9 and 10: Features and Specifications Tank Po
Page 11 and 12: Features and Specifications 2500 li
Page 13 and 14: Description of Fluid Flow The schem
Page 15 and 16: Installation Left Tilt Main Fold Ri
Page 17 and 18: Connecting to the Tractor Adjustabl
Page 19 and 20: Operation Bottom Fill Filter Option
Page 21: Operation To increase pressure turn
Page 25 and 26: Operation Spray Boom Operation The
Page 27 and 28: General Spraying Information When t
Page 29 and 30: Calibrating the Sprayer Testing the
Page 31 and 32: Optional Equipment Hand Valve DIGIT
Page 33 and 34: Lubrication and Maintenance Annual
Page 35: SILVAN AUSTRALIA PTY. LTD. ABN 48 0

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