Doser - Gaspardo ALITALIA Emploi Et Entretien

ENGLISH

4.4 DOSER

The doser (Fig. 21) the most important part for distribution, is
located underneath the seed hopper.
It is driven by an electric motor connected to the tractor speed
sensor.
In that event, for the metering operation and the metering
adjustment, checking and tests, please refer to the relevant User
and Maintenance Booklet.
The volumetric distributing device, is essentially composed of four
elements for seeds distribution:
A) aluminium monobloc frame;
B) agitator element;
C) dosing rollers;
D) Feeler pin.
MONOBLOC FRAME
The monobloc frame is made of aluminium and offers the following
main advantages:
- realization of very high precision and high quality over time;
- resistance to the effects of UV rays or to the problems of harsh
autside temperatures;
- high resistance to corrosion;
- quick simple maintenance: in a few minutes we can completely
remove the components of the doser without fully unscrewing
the screws, using just one spanner.
AGITATOR ELEMENT
Guarantee of continuous feeding to the dosing rollers.
The agitator can be disabled by simply removing the drive belt.
- To disable the agitator, lift the round belt above the edge of the
drive pulley and, on the opposite side, rotate the dosing roller in
the driving direction. The belt will come off (Fig. 22).
- Simply leave the belt on the drive shaft (Fig. 23).
(To fi t the belt, see chapter on dosing roller)
DOSING ROLLERS
- Large diameter to reduce the number of revolutions and avoid
fertilizer load losses;
- High number of cells arranged in a steggered pattern to guarantee
uninterrupted delivery;
Assembling and disassembling the dosing roller
All the dosing rollers are compact units constructed in a single block
(except for the fi ne seeds dosing roller, yellow).
Never fi t dosing rollers with screws loosening the handwheel!
The radial precision of the wheels, which are calibrated after
assembly, could be damaged!
Always use gloves: after calibration, the new dosing rollers
could have sharp edges that might injure the operator!
62 - EN
WARNING
USE AND MAINTENANCE
fi g. 22
fi g. 23

A
B
C
D
cod. G19503391
fi g. 21