16
Figure 12. Down-pressure value P=11
Figure 13. Maximum down-pressure P=15
Adjusting down-pressure while seeding
The down-pressure value mentioned above is the lowest limit value, which
determines when the system will stop the hydraulic lowering of the machine. The
down-pressure of the machine can be decreased during driving and increased again
using hydraulics at areas where the pressure is lower than the maximum down-
pressure set. If you want to increase the down-pressure during driving you must first
increase the maximum down-pressure electronically and then lower the the machine
hydraulically. In some situations, the maximum value cannot be reached if the soil is
extremely hard and if the container has a light load.
When adjusting the down-pressure manually, the relative amount of down-pressure
is shown on the front panel of the seed fertilizer.
The down-pressure is suitable for seeding when the bearing wheels of the seed
fertilizer containers roll along the ground but do not bear the load caused by the
down-pressure to a significant extent. When this is the case, the seeding depth is as
close as possible to the value chosen from the bearing wheel.
Down-
pressure
value (1-15)
