Troubleshooting Maestro
Malfunction
Possible cause
Remedy
One row does not drill
Foreign objects in seed hopper or
metering unit
Clean seed hopper and metering
unit
Vacuum connection interrupted
Check vacuum connection and hose
Motor defective
Replace the motor
The drill unit stops
Foreign object in metering unit
Clean the metering unit
Too many faults
Working speed too high
Reduce the working speed
Scraper not correctly adjusted
Adjust the scraper less aggressively
Vacuum set too low
Increase the vacuum
Gap between metering disc and
metering housing too big
Remove a shim
Too many double seeds
Scraper not correctly adjusted
Adjust the scraper more aggressively
Vacuum set too high
Reduce the vacuum
Seed grains are scattered
Working speed too high
Match the working speed
Downpipe not correctly assembled,
blocked or defective
Correct the assembly or replace the
downpipe
Trap roller incorrectly adjusted
Adjust trap roller to coulter height or
5 mm lower - see instructions
Trap roller defective or hard to move Replace the trap roller
Downpipes or drill discs clogged
Drill has been lowered and rolled
backwards
Only move the drill forward when
lowered.
Irregular
fertilizer
distribution
Fan speed too low
Adjust the speed, measure the
transverse distribution
Loss of fan air - pneumatics - Venturi
area, calibration cover, tower or hoses
leaking
Rectify all leakages
Fan suction filter blocked
Clean the suction area
Deposits in the distributor
Clean the distributor
Not enough seed is placed
Calibration not correct
Repeat the calibration
Bridging in hopper
Use free-flowing
fertilizer
Metering cells stuck together
Clean the metering cells
Too much
fertilizer
is placed
Calibration not correct
Repeat the calibration
Sealing lip defective, incorrectly
adjusted
Check or replace the sealing lip
Current consumption too high
Gap between metering disc and
metering housing too small
Insert shim
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