Under extreme conditions overpressure can
block the seed ow in the hopper. This causes
seed failure.
You should therefore always check the
function of the pneumatic system and the
placement of seed, especially with high
seed quantities and working speeds.
No grains should remain on the surface
of the eld.
If grains are blown out, the fan speed needs to
be increased (short-term up to 4000 rpm)
or the working speed must be reduced, until the
injector system works correctly again.
Servicing the metering unit
The metering unit does not require any specic
maintenance.
In order to avoid repair related downtimes, both
the metering unit and the drive motor should be
cleaned and subjected to a function test after the
end of the season.
The bearings in the side cover in particular can
be damaged or may become hard moving be-
cause of dressing dust.
If necessary keep bearings in stock and replace
in due time.
1
2
Drive motor
1. Screws
2. Radial seal and bearing
Plug assignment on engine
In case of cable breakage or repair work on the
plug, the cables can be connected by soldering.
However, the use of crimping contacts is rec-
ommended.
Pin No. cable
1. blue
2. red
3. white
4. brown
5. green
6. yellow
71
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