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made twice every 25 operating hours, after which you can resume the normal interval of 100 hours.
Both ends of the machine have two M24 screws (screwdriver 36), which, together with the braces at the ends,
are used to tighten the axial end float of the coulter carriages. These screws are equipped with anti-rolling
parts, which need to be removed during the tightening. Furthermore, the machine is supplied with adjustment
plates (inner diameter 50 mm), which can be installed behind the braces if the end float is so great that the
inner surface of the brace makes contact with the machine’s end plate (there is no more space for tightening).
If it appears during seeding that one of the coulter tubes does not remain in the coulter trough, the problem is
usually the direction of the upper end of the tube and/or the bow of the tube. Turn the tube and/or funnel to a
different position at the top end and check again.
Considerations for using the machine
Certain large-size and light seeds (for example, certain oats) may pose difficulties with the seed flow through
the filters. If this is the case, remove the filters from the seed hopper. Pay particular care when filling in the
hopper so that no large objects are fed with the seeds, as this could damage the feeders.
Always lift the rear steps up when you are driving the machine, whether seeding or transporting the machine.
Note that the you must distinguish between two separate issues when talking about the advancing of the
machine. The advancement that determines the seeding dosage accuracy refers to the advancement of the
ground wheel that operates the machine’s feeders. So the concept refers to the amount of advancement of
that ground wheel per are (cf. Section 13,
Improving the seeding accuracy
). As opposed to the above
advancement, the advancement that affects the accuracy of area surface measurement is determined by the
advancement of the bearing wheels. Make a calibration test to determine how much the machine advances
during seeding conditions when the bearing wheel turns one full round.
The machine’s calibration tests are made on both the seed and fertilizer sides in the troughs underneath
feeder chambers. Observe caution when pushing the troughs in their places. Keep them absolutely straight
relative to the machine. If you push a trough forcefully so that its head points upwards, the trough may hit one
of the feeder chambers and damage them.
The air pressure of the working depth bearing wheels (front wheels) is easiest to check if you place a
sufficiently robust, but not too wide a support (a wood block etc.) under every second wheel when lowering
the machine. This way the entire coulter carriage and its wheels will rise up, which gives you enough space to
reach the cock with your hand. NOTE! OBSERVE CAUTION WHEN PLACING THE SUPPORT. MAKE
SURE THAT IT IS FULLY UNDERNEATH THE WHEEL, AND SUPPORTS THE STRUCTURE. IF THE
SUPPORT COLLAPSES, YOUR HAND MAY BE SQUEEZED INSIDE THE MACHINE.
If your seeder fertilizer is equipped with an electronic monitor that has seed and fertilizer surface sensors,
care must be taken when extracting the filters from the hoppers. If the filter hits a sensor, the sensor will be
damaged.
Also observe caution in installing and extracting the seed dressing device’s hoppers.
DO NOT SEED IN EXCESSIVELY WET CONDITIONS. THE SOIL GETS PACKED AND
POROSITY/ WATER TRANSMISSION RATE OF THE SOIL DETERIORATES
WATCH THE SEEDING DEPTH. FOR INSTANCE IF THE FIELD HAS BEEN TILLED
YOU SHOULD SEED IN UNTILLED SOIL BEWARE
WHEN TILLING IN THE SPRING THAT THE TILLING DEPTH IS NOT EXCESSIVE.
THE MOST COMMON MISTAKE IN USING NOVA COMBI IS THAT THE
COULTER PRESSURE IS TOO HIGH.
THE PRESSURE IS SUITABLE WHEN YOU ATTAIN THE DEFINED
SEEDING DEPTH SO THAT THE COULTER CARRIAGE MOVES
SECURELY ON THE FRONT ADJUSTING WHEEL! EXCESSIVE
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