4 - Sprayer Setup
86
Hydraulic System
General Info
Ensure that the snap couplers are clean before connection!
After having operated the boom and the system has been filled with oil, check the tractor’s hydraulic oil level and top up if
necessary.
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DANGER! Test of the hydraulic system should be done very cautiously. There may be air trapped in the system which
can cause violent movements of the boom.
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DANGER! Hydraulic leaks: Never use your fingers to locate a leakage in any part of the hydraulic system. Due to high
pressure, hydraulic oil may penetrate the skin.
Requirements For Tractor
The hydraulic system requires:
• One double-acting outlet for the electro-hydraulic operation of the boom functions.
• One double-acting outlet for operating the FlexCapacity pump (optional equipment).
• One double-acting outlet for operating the hydraulic support leg.
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ATTENTION! The hydraulic hoses are marked with arrows to indicate the direction of oil flow.
• Oil flow between 25 and 90 l/min and a minimum pressure of 180 bar.
• Maximum permissible oil pressure is 210 bar.
• Return flow restriction of the connected tractor must be maximum 10 bar.
• For Load Sensing systems, an oil flow of approximately 5 l/min at 25 bar is supplied by the sprayer hydraulics. If a bigger
flow is required, a different orifice must be installed between the “open centre” hydraulic block and the load sensing
(LS) hydraulic line - see “Open and Closed Centre Hydraulics” on page 87 for more information.
Open and Closed Centre Hydraulics
This hydraulic block is necessary, if the tractor uses open centre
hydraulics and/or load sensing (LS).
The valves (pos.1 and 2) is factory set for open centre hydraulics, but if
closed centre hydraulics is used (also in combination with load sensing),
screw in the valves clockwise.
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WARNING! Always be sure to fully open or close the selection
valves for open/closed centre hydraulics.
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NOTE! The hydraulic block is accessed from below the sprayer
chassis.
Certain tractor models are able to use Load Sensing without connecting
an external sensing line. But if optimal sensing control pressure cannot
be obtained, an external sensing line needs to be connected to the
tractor.
Connection to Tractor
If Load Sensing (LS) is to be used, connect a hydraulic hose from the
tractor’s LS port to the O-LS port (D) on this hydraulic block.
Connection size for port D is G1/4”.
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