Hardi NAVIGATOR 3000, Operator'S Manual, Page: 42 / 122

4 - Sprayer setup
40
Hydraulic systems
General Info
Ensure that the quick couplers are clean before connection!
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ATTENTION! After having operated the boom and the system has been filled with oil, check the tractor’s hydraulic oil
level and add oil if necessary.
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DANGER! Due to the variation in tractor hydraulic systems and capacities, care should be exercised when initially
operating the sprayer hydraulic cylinders. There may be air trapped in the system which can cause violent
movements of the boom. It is advisable to adjust the hydraulic flow control down to the minimum rate before
operating the system. Adjust/increase the flow control after the system is bled of any air, if necessary.
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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 - tractor (SPB/SPC HY-model)
The hydraulic system requires:
• One single acting outlet for the lift function of the spray boom.
• One double acting outlet for the folding function.
• One double acting outlet for the operation of the hydraulic pump drive (optional). The system has a built-in flow
regulator that maintains constant speed on hydraulic movements.
• Minimum oil pressure of 2,175 psi (150 bar), max. oil pressure of 3,050 psi (210 bar) and an oil capacity of approx. 6.6
gal (25 liters).
Requirements - tractor (SPB/SPC HZ-model)
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 (optional). The system has a built-in flow
regulator that maintains constant speed on hydraulic movements.
• Oil flow between 3 - 11 gal/min. (10 and 40 l/min) and a min. pressure of 2500 psi (170 bar).
The hydraulic hoses are marked with arrows or colored tie straps to indicate direction of oil flow. Red tie strap = pressure.
Green tie strap = Return to tank. The hoses must be hooked up to the correct outlet for the hydraulics to function properly
(pressure hose to pressure outlet, return hose to tank outlet).
Requirements - tractor (DTZ model)
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 (optional). The system has a built-in flow
regulator that maintains constant speed on hydraulic movements.
• Oil flow between 4 - 21 gal/min (15 and 80 l/min) at a pressure of 2900 psi (200 bar).
• Minimum oil pressure is 2600 psi (180 bar) to obtain correct operation. Maximum oil pressure is 3050 psi (210 bar).
• Return flow restriction of the connected tractor must be maximum 220 psi (15 bar).
• For Load Sensing systems, an oil flow of approximately 1.3 gal/min (5 l/min) at 360 psi (25 bar) is supplied by the sprayer
hydraulics. If a greater flow is required, a different orifice must be installed between the “open center” hydraulic block
and the load sensing (LS) hydraulic line - see “Open center hydraulics” on page 42 for more information.
The hydraulic hoses are marked with arrows or colored tie straps to indicate direction of oil flow. Red tie strap = pressure.
Green tie strap = Return to tank. The hoses must be hooked up to the correct outlet for the hydraulics to function properly
(pressure hose to pressure outlet, return hose to tank outlet).