Hydraulic Systems; General Info; Requirements For Tractor - Hardi COMMANDER DELTA FORCE Instruction Book

4 - Sprayer Setup

Hydraulic Systems

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

DDZ and DDV Booms
The hydraulic system requires:
• One double-acting outlet for the electro-hydraulic operation of the boom functions.
• One double-acting outlet for the operation of the hydraulic pump drive (alternative to a PTO shaft).
• One double-acting outlet for the operation of the hydraulic support leg.
DDY Booms
The hydraulic system requires:
• One single-acting outlet for raising / lowering of the boom.
• One double-acting outlet for folding / unfolding
• One double-acting outlet for slanting of the boom.
• One double-acting outlet for the operation of the hydraulic pump drive (alternative to a PTO shaft).
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ATTENTION! The hydraulic hoses are marked with arrows to indicate the direction of oil flow.
Other Information
• The system has a built-in flow regulator that maintains constant speed on hydraulic movements.
• Oil flow between 15 and 80 l/min at a pressure of 200 bar.
• Minimum oil pressure is 180 bar to obtain correct operation. Maximum permissible oil pressure is 210 bar.
• Return flow restriction of the connected tractor must be maximum 10 bar. If this pressure is bigger, the anti-yaw system
will not work properly.
• 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 88 for more information.
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