USE AND MAINTENANCE
ENGLISH
57
cod. G19502563
SELECTOR ADJUSTMENT
When the indicator (1 Fig. 20) is moved, it commands a cursor (2
Fig. 20), which slightly touches the plate near the holes, causing
the excess seeds to fall. The selector is adjusted at each seed
and plate change, towards the lower numbers for small seeds
(Fig. 20) and viceversa for big seeds (Fig. 21).
IMPORTANT: The selector does not adjust the air flow in the
distributor.
ANTI-OVERFLOW PLATE ADJUSTMENT
The anti-overflow plate (1 Fig. 22) can be adjusted to 3 positions
and defines the width of the seed inlet gap (2 Fig. 22), so that
these cannot flow out of the distributor due to excessive feeding.
Adjustment is particularly needed when the ground slopes steeply
or when working with small seeds.
In this case, it might be necessary to replace the standard plate
with a special one to be used exclusively with small seeds.
Spare part order code: 22270133.
3.6.2 VACUUM PUMP
The aspirator (Fig. 23) creates a vacuum inside the distributors, so
that the seeds are aspirated onto the holes in the plate. The tensioning
and good condition of the belt are therefore of vital importance to
ensure the good for the good operation of the aspirator and, hence,
the success of the sowing.
The belt is correctly tensioned when it
does not yield under the pressure of a hand.
WARNING
Make sure that the universal joint is disconnected from the
power take-off before carrying out the following operations:
Belt checking procedure:
- Remove the protective housing
- Loosen the 4 screws (1, Fig. 23).
- Loosen the nut (2, Fig. 23).
- If worn, replace the belt (4, Fig. 23).
- Tension the belt by tightening the screws (3, Fig. 23).
- Tighten the bolts loosened before and close the casing.
Vacuometer
The vacuometer (5, Fig. 23) a the vacuum measuring device. The
one supplied shows aspiration values ranging from -0 to -100
mbar. The average approximate aspiration values for large seeds
are: 60 to -70 mbar for small seeds: -40 to -50 mbar.
Comply with the number of rpm recommended for the power
take-off.
When necessary, remove the glass of the vacuometer
to carry out a cleaning operation with a gentle jet of air or a
cloth. If it is necessary to reset the indicator of the vacuum
gauge, remove the glass cover and use a screwdriver to take
out the screw as shown in Figure 24.
fig. 22
fig. 21
1
2
1
3
5
1
3
5
11
fig. 20
1
1
2
2
A
B
-50
-60
-70
-80
-90
-100
0
-10
-20
-30
-40
Mbar
3
1
2
4
5
-60
-80
-100
0
-20
-40
mbar
fig. 23
fig. 24
