horsch Maestro 12.45 CV, Operating Instructions Manual

Page: 119 / 155

Micro-granulate facility
With the micro-granulate facility additional gran-
ulate, e.g. pesticides or fertiliser, is placed.
Depending on equipment and setting, the gran -
ulate can be placed with the grains into the seed
furrow, or on the surface.
The system consists of a pressure hopper with
a capacity of approx. 300 l, a metering unit with
metering auger and an electric drive.
The pressure hopper must be absolutely leak
tight during use!
¾
Always check the cover for leak tightness with
the fan running, after it had been opened.
¾
If necessary, readjust the hinges or replace
the gasket.
NOTE
Pressure hopper cover, hoses and connections
must be leak tight. Air losses reduce the placing
quantity!
3
1
2
4
5
6
7
8
1 Micro-granular compound hopper
2 Hose for micro-granular compound transport
3 Metering auger
4 Gate valve
5 Seed bridging sensor
6 Hopper empty sensor
7 Differential pressure sensor
8 Calibration switch
Adjustment and operation
Depending on the granulate quantity, the me -
tering unit can be fitted with different augers.
The actual displacement depends on various
factors and can therefore only be determined
by calibration.
NOTE
¾
For the selection of the metering augers and
calibration, refer also to the section Appendix.
¾
Make sure that always metering augers of the
same size are installed!
Changing the metering augers
¾
If the hopper is full, loosen the gate valve by
the wing nut and reinsert it into the slot the
other way around.
¾
Loosen the two wing nuts on the metering unit
and pull out the lid with the metering auger.
¾
Pull the spring pin out of the shaft.
¾
Replace the auger. Pay attention to the condi-
tion and correct fit of the O-ring on the screw
to be used.
¾
Insert the spring pin.
¾
Reinsert the parts into the metering unit.
¾
Turn the screw further until the hexagon can
be inserted into the drive from the top.
¾
Retighten the wing nuts.
Hopper blocked, metering auger removed
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