• Poor quality regrind - high percent of fines
• Increased vibration
• Increased noise
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• Dull Knives
• Knives not properly gapped
• Plugged screen
• Rotor speed is too high
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• Sharpen or replace with new
• Re-gap knives
• Clean screen
• Change pulleys and/or motor
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• Reduced throughput
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• Dull knives
• Knives not properly gapped
• Plugged screen
• Rotor speed is too high
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• Sharpen or replace with new
• Re-gap knives
• Clean screen
• Change pulleys and/or motor
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• Rotor stalls
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• Dull knives
• Knives not properly gapped
• Plugged screen
• Overloading the machine
• Loose or worn belts
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• Sharpen or replace with new
• Re-gap knives
• Clean screen
• Reduce the feed rate
• Tighten or replace
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• Motor will not start
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• Safety limit switch open
• Blown fuse or breaker
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• Check all limit switches
• Replace or reset
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• Regrind collection bin overfill
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• No high level indicator
• High level indicator broken
• Vacuum line plugged
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• Install
• Replace
• Check vacuum evacuation system
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