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12 Faults and remedies
12.7 Cleaning unit
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12.7 Cleaning unit
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12.7.1 Cleaning problem and remedy
– Observe the general warnings at the beginning of
the "Trouble and remedy" chapter.
Malfunction Cause, remedy
Cleaning unit
Uneven feeding to the sieves • Ensure even feeding (cutterbar).
• Clean preparation floor.
• Straighten wire rakes on the preparation floor.
Mat formation on frogmouth sieves • Set the frogmouth sieves to a wider position.
• Increase the air blast.
• Reduce threshing drum speed (broken straw).
• Adjust the wind boards properly.
• Set the pre-sieve deflector to another position.
Dirty grain sample • Increase the air blast.
• Decrease frogmouth sieves opening.
• Adjust the wind boards properly.
Cleaning performance monitor deflects all the way. • Set the chaff spreader so that no chaff can be
thrown on the sensor.
• Check tight seat of sensor trough and sensor.
Loose sensor trough - Tighten sensor trough.
Loose sensor - Replace sensor trough.
The cleaning performance monitor displays insuffi-
cient performance.
• Clean sensor trough.
• Check tight seat of sensor trough and sensor.
Loose sensor trough - Tighten sensor trough.
Loose sensor - Replace sensor trough.
Slip reported from different units • If necessary, check tight seat and correct position of
cam wheels.
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