Pneumatic system
The pneumatic system consists of
•
Fan
•
Hopper
•
One or several metering units, depending on
the design
•
Distributor towers.
WARNING
Risk from hazardous dust (fertiliser, dressing).
¾
Always wear suitable protective outfit (safe
-
ty goggles, respiratory masks, protective
gloves) for cleaning and maintenance work.
Fan with direct drive
The hydraulic fan is directly driven by the tractor
hydraulics.
The generated air flow conveys the seed from
the fall sluices to the coulters. The required air
quantity depends on seed (type and weight),
seed quantity, working width and sowing speed.
A correct fan speed cannot be specified and
must therefore be determined by trials in the
field.
Please note:
•
The air flow must not be too high, so that no
seed or fertiliser will be blown out of the seed
furrow.
•
However, the air flow must also not be too
weak, so that no seed or fertiliser will remain
in the hoses and cause blockage.
The fan speed should therefore be set as high
as possible.
B
A
1
3
4
2
Fan Pronto 3 DC / 4 DC / 4 DC rigid - single hopper
1 Fan with gear motor 6 ccm
2 Fan drive pressure gauge
3 Hydraulic connection - control unit +
4
Hydraulic connection - pressureless return flow
B
A
T
1
3
4
5
2
Fan Pronto 6 DC single hopper
1 Fan with axial piston motor 5 ccm
2 Fan drive pressure gauge
3 Hydraulic connection - control unit -
4 Hydraulic connection - control unit +
5 Hydraulic connection - leak oil
B
A
T
1
3
5
4
2
Fan Pronto 3 - 6 DC - twin hopper
1 Fan with axial piston motor 10 ccm
2 Fan drive pressure gauge
3 Hydraulic connection - control unit -
4 Hydraulic connection - control unit +
5 Hydraulic connection - leak oil
58
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Summary of Contents for Pronto 3 - 6 DC
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