Dosing; Doser; Important - GASPARDO PRIMAVERA Empleo Y Mantenimiento

ENGLISH

3.4 DOSING

3.4.1 DOSER (Fig. 14)
The doser the most important part for seeder operation, is located
underneath the seed hopper.
Motive power is transmitted to it by the drive wheel through
gears (with ratios proportional to the width of the work to be
carried out) and chains.
The Electric Distribution Control can be supplied as an acces-
sory. 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 dosing 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 di-
sable the agitator, lift the round belt above the edge of the drive pulley
(Fig. 15) and, on the opposite side, rotate the dosing roller in the driving
direction. (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 (with the exception of the dosing roller for fi ne seed, yellow
version) and are calibrated after assembly. 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!
There are various types of wheels for a wide range of applications,
in three different product families (Fig. 16):
D) 5 elements, 8 chambers per wheel, (mod. G1000) distribution
of normal seeds (of series).
E) 5 elements, 16 chambers per wheel, (mod. G500) distribution
of normal seeds (optional).
F) 5 elements, 32 chambers per wheel, (fi ne seeds dosing roller)
(mod. F25-125).
50
WARNING
USE AND MAINTENANCE
fi g. 14
A
fi g. 15
fi g. 16
D
IMPORTANT: Use a suitable metering roller with the type of
distributed seeds.

B
C
B
D
E
F
P
cod. G19503101