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unigreen 17
5 HORIZONTAL BOOMS FOR HERBACIOUS CULTIVATIONS
5.2 HYDRAULIC HERBICIDE BOOMS
These are made in of steel painted with epoxy paint or hot galvanised. The
jet booms are made of stainless steel with the jets mounted normally ever 50
cm.
All of the booms are folded onto the central body and the external arms have
safety joints to prevent breakages.
In the case of a knock the boom bends to avoid the obstacle and normally re-
turns to the working position automatically. In any case the operator should
try to avoid knocking against objects as this could damage both the boom
and the obstacle in time; all the more so if the two elements get stuck.
Check that no one and nothing is in the area where the booms will open; par-
ticular attention should be paid to the presence of any electric power lines.
The hydraulic plant can be fed from the hydraulic pump of the tractor or be
fully independent.
- The hydraulics are controlled by a hydraulic distributor with mechanical or
electro-hydraulic controls and switches in the cabin.
- All of the controls on both versions are sustained action controls and each
lever or switch has a pictogram of the relevant operation it controls.
See the enclosed handbook for instructions on the use of the electrohydraulic
version (Elettroil).
WARNING: with hydraulic booms, don’t stand in the range of action of the
machine.
Pay attention to the integrity and efficiency of the hydraulic components and
in particular to the pipes to prevent the risk of bursting.
Do a full check on the pipes and components at least once a year, we
recommend replacing hydraulic pipes every 3-4 years.
5.1.1 INDIPENDENT HYDRAULIC PLANT
In this case there is a tank, a filter and a hydraulic pump fitted with a flange
behind the main pump of the sprayer.
IMPORTANT:The entire plant is designed to be used at 540 RPM.
Periodically check the oil level in the tank and avoid filling it over 3/4 full as
the oil might overflow.
The tank has a filler cap with a breather, when the need arises (for repairs or
to replace a component) you can drain the oil by disconnecting the suction
pipe of the pump and collecting the oil in a recipient.
WARNING: the oil used mustn’t be dispersed in the environment and must be
collected in the relevant containers.
5.1.2 OIL FEED FROM TRACTOR
Consult the use and maintenance manual of the tractor.
Connect the delivery and discharge quick-fit coupling to the respective
connections, respecting the direction of flow.
= On booms that have a direct connection to the quick-fit couplings, each
pair of couplings feeds a cylinder.
= For booms equipped with EDR electro-deviators, follow the diagram of the
couplings supplied.
= For manual or electric distributors (Elettroil), the distributor inlet pipe is
connected to the aluminium flow separator valve next to the distributor (see
photo).
The flow separator must be adjusted correctly so it send less than 4-5 L/1° to
the distributor.
To prevent the cylinders moving at a dangerous speed, adjust the relevant
chokes near the cylinders. If the registration ring nuts aren’t visible then fixed
chokes are fitted. The chokes are fitted on the discharge line of the
movement to slow.
Any impurities in the oil could block the chokes and as a consequence block
the cylinder; remove the dirt if necessary.
The maximum pressure valves of the distributors are regulated to a pressure
of around 150 bar.
Elettroil connection to quick-fit couplings of the
tractor
Tank Hydraulic pump
Oil level