43
Fig. 6.13
Fig. 6.14
ADJUSTMENTS
To check that the selector’s position is the right one,
follow these steps:
1. Raise the machine from the ground.
2. Use the PTO to pressurize the pneumatic system
until the pressure is appropriate (see section 6.4
SUCTION SYSTEM – FAN).
3. Turn manually a driving wheel in the forward di-
rection, loosen the inspection knob (Fig. 6.13) to
check the seed distribution inside the seed disc.
4. Adjust the selector’s lever position (Fig. 6.14) de-
pending on the seed distribution inside the disc
checked in the previous point. For a correct ad-
justment, see Fig. 6.15.
ADJUST THE SEED SELECTOR USING THE CORRECT
SUCTION POWER LEVELS, AS SHOWN IN THE TABLE
OF THE PREVIOUS PAGE (see section 6.4 Suction sys-
tem – Fan).
5.
Close the inspection gates of the metering boxes.
IMPORTANT: IN CASE THAT THE ADJUSTING VALUES ARE BIGGER OR SMALLER THAN THE ONES
IN THE PREVIOUS TABLE AND THE LACK OF SEEDS IN THE DISC PERSISTS, REPLACE THE DISC BY
ANOTHER ONE WITH BIGGER HOLES. IN CASE THE EMERGENCE OF DOUBLES PERSISTS, REPLACE
THE DISC BY ANOTHER ONE WITH SMALLER HOLES.
THE SEED SELECTOR IS ADJUSTED USING THE LEVER PLACED OUTSIDE THE METERING BOX. FOR
THIS REASON IT SHOULD NOT BE ADJUSTED MANUALLY WHEN HANDLING THE INSIDE OF THE
METERING BOX. THE SEED SELECTOR SHOULD ONLY BE REMOVED TO PERFORM MAINTENANCE
OR CLEANING OPERATIONS, OR TO REPLACE THE SEED DISC
IN CASE THAT THE ADJUSTING VALUES ARE BIGGER OR SMALLER THAN THE ONES
Lack of seed in
the disc’s holes.
INCORRECT
P
lace the lever at a HIGHER
number (for example from 2,8 to
3). If this is not enough, increase
the suction pressure.
CORRECT position,
one seed per hole
Fix the lever.
Double seeds
emerge in the seed disc
Place the lever at a LOWER
number (for example from 2,8
to 2,6). If this is not enough, re-
duce the suction pressure.
Fig. 6.15
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