horsch Maestro 24 SW, Operating Instructions Manual

Page: 83 / 115

Problem Cause Remedy
Too many missed seeds Scraper set too aggressive Adjust the outside scraper more in
direction 9
Feed gate incorrectly adjusted Adjust the grain feed gate
Vacuum too low Increase the vacuum setting
Increase the fan speed
Check lines and connections for leaks
Gap between metering disc and
metering housing too big
Remove a shim
Protective suction grid dirty Clean the protective grid
Grain frequency too high Reduce the working speed
Grain geometry misshapen or inho-
mogeneous
Reduce the working speed
Increase the vacuum
Use homogeneous batch
Metering disc incorrectly chosen Changing the metering disc
Grain sensor dirty Clean the downpipe with the sup-
plied brush
Connecting hose between metering
unit and frame (vacuum system)
shows cracks
Check all hoses thoroughly for
damage/ cracks!
A too low vacuum caused by cracks
is not indicated by the pressure
gauge / display.
Hillside location when sowing along
a hill side
Slightly open the entry pusher (high-
er stage).
Mix the seed with a mixture of 80% talc
and 20% graphite. Metering approx.
200 g for each 100 kg of seed.
too many double seeds Scraper adjustment not aggressive
enough
Adjust the outside scraper more in
direction 1
Vacuum too high Lower the vacuum setting
Reduce the fan speed
Metering disc incorrectly chosen Changing the metering disc
Variation coefficient too high Vacuum incorrectly adjusted Adapt the fan speed
Grain frequency too high Reduce the working speed
Protective suction grid dirty Clean the protective grid
Too many missed/double seeds Optimise the setting
Sliding bridge or scrapers soiled by
deposits (dressing, dust)
Clean dirty parts
Seed sticky because of dressing Allow the dressing to dry over a suffi -
cient period of time
or
Mix the seed with a mixture of 80% talc
and 20% graphite. Metering approx.
200 g for each 100 kg of seed.
Current consumption too
high
Grain feed covers soiled on inside
Clean area on inside scraper, see
chapter
Components in metering unit
Gap between metering disc and
metering housing too little
Insert additional shim, see chapter
Components in metering unit
Problem treatment table
78 79