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4.4 TRACTOR COUPLING
The tractor must have a 1”3/8 ASAE DIN 9611/A power-takeoff that runs at
550 rpm. It must have a 3-point elevator suitable for safely supporting the
weight of the sprayer. Check this by consulting the table of allowed fittings N°
12a page 29.
WARNING: make sure there are no persons or things near the sprayer before
starting the machine and while you are using it.
a) Check the diameter of the elevator coupling pins. If necessary position the
double diameter pins correctly; there are also appropriate adapter bushes
available.
b) If the machine is coupled to the tractor by a tow hook, adjust the height of
the hook to keep the tank of the atomiser horizontal.
If the machine is coupled to the tractor by the elevator, retract the parking
wheel to stop it getting damaged during work (important: the parking wheel can
only support the EMPTY weight of the atomiser). Keep the towed machine
level with the control of the elevator.
c) On the versions with the telescopic support of the pressure regulator, adjust
it so it is easy to reach from the driver’s seat.
d) Check that the weight on the elevator can be born by the tractor (roughly
500 kg in the 2000 litre version).
e) Check that the tow bar steering joint is lubricated with grease.
f) If you need to adjust the gauge of the wheels of the towed machine, in any
case make sure the blocking screws of the axle shafts and the rim bolts and
any spokes of the wheel disc are tight.
To adjust the gauge, lift the towed machine as shown in point 4.3.1.
g) Check the pressure of the wheels (shown on the tyres).
4.4.3 HYDRAULIC CONNECTION TO THE DISTRIBUTORS
The machines that need a hydraulic connection to drive the herbicide booms
are equipped with 1/2", “Push-Pull”, quick-fit male couplings. You can connect
the pipes by simply pushing them in, making sure you:
- proceed only with the engine turned off;
- lower any tools connected to the elevator of the tractor;
- carefully clean the two parts that will be coupled
Warning: the hydraulic cylinders used are the “Double Effect” type.
Consult the use and maintenance manual of the tractor.
4.5 CARDAN SHAFT
In some models this is supplied on request.
The cardan shaft must bear the CE mark.
It must always have its own instructions that must be followed scrupulously
and it should come with a cover bearing the mark, integrated in every part.
You should have previously checked the length to avoid:
= if it is too long, DANGEROUS THRUST ON THE PUMP SHAFT
= if too short, the POSSIBILITY OF DANGEROUS BREAKAGES
THE MINIMUM OVERLAP OF THE TWO TELESCOPIC TUBES MUST
NEVER BE LESS THAN 1/3 OF THE LENGTH OF THE TUBES.
The power that can be transmitted by the cardan shaft must be at least equal
to that required to run the sprayer. Consider that the power necessary to run a
sprayer without the fan is practically the same as that of the pump, the power
rating can be found in the pump instructions handbook. Generally 20 bar
pumps need 20 hp; 50 bar pumps need 30 hp. These power ratings can be
found in tables N° 12a page 29.
Tractor coupling for Towed machines:
- (A) standard version, with elevator coupling
- (B) homologated version, coupled to tow hook
Tractor coupling for homologated Towed
machines in work position (not suitable for
road use).
A
B