4 - Sprayer setup42Open Centre Hydraulics (optional)The open centre hydraulics block is necessary, if the tractor uses opencentre hydraulics and/or load sensing.The valves (1) and (2) is factory set for open centre hydraulics, but ifclosed centre hydraulics is used (also in combination with load sensing),screw in the valve (clockwise).Certain tractor models are able to use Load Sensing without connectingan external sensing line. But if optimal sensing control pressure cannotbe obtained, an external sensing line needs to be connected (3). Pleaseconsult your tractor dealer for correct setup and correct connection.± WARNING! Before operating the hydraulics, the valve should beset according to the specific tractor model. If you are unsure ofthe type of hydraulic system in your tractor, please contact yourtractor dealer.Combinations of settings for flow element and circuit value:*if the tractor requires pressure relief, contact your tractor dealer for further advice.± WARNING! Always be sure to fully open or close the open/closed centre selection valves. Failure to do so may causedamage to vital pump parts.± WARNING! It is essential that connectors on sensing line are kept totally clean. Failure to do so can result in impuritiesentering the pump and causing damage to vital pump parts.Valve no. 1 2 3 (LS port)Open centre Out Out Not connectedClosed centre In In Not connectedLoad sensing (LS) In Out* Connected
