Multiva Cerex 300 Comfort, Operation And Maintenance Manual

Page: 90 / 187

6.8. Product calibration
The seeding tables that contain the basic values for adjusting the seeding quantity are located
under the transmission cover in the seed drill. The seeding tables are provided in section 6.5.
Seeding quantities. However, there are great differences between various seeds, which is why
the actual seeding quantity must always be checked with a calibration test. Seed treatment, such
as seed dressing, has considerable impact on uidity.
The calibration test should be performed whenever changes are made to the feeding rates. In
particular, fertiliser quantities may vary a lot due to the moisture and uidity of the fertiliser.
When driving on the road with hoppers full of fertiliser and seeds, the vibration may cause
arching in the hoppers. In the autumn or after rain, the fertiliser may absorb humidity in the
feeders, changing fertiliser uidity. For this reason, it is good to monitor that fertiliser or seed
ow evenly from all feeders when seeding begins. Performing a calibration test is in order and
visually checking that the feed rate is even is all feeders.
Figure. 6.8. - 110. Pulley
When running a calibration test on the machine, the machine must be raised from its
working position so that the pulley (1) comes off of the tyres.
6.8.1. Fertiliser calibration test in a machine without a gearbox or
with a gearbox on the seed side
DANGER
Shut off the tractor, remove the key from the ignition and engage the parking brake
before running a calibration test. If the machine is equipped with middle markers, close
the middle marker shut-off valves in accordance with section 3.4. Using the middle
marker ball valves.
Operation and maintenance manual
Cerex 300 and Cerex 400 Comfort
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