Melitta Abnormal Grinder Noise / Mechanical Damage

Grinder is extremely loud, squealing, or grinding metal-on-metal.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Foreign object (stone, metal) in grinder, Severely worn burrs, Misaligned burr carrier, Loose grinder mounting screws

Safety first: Unplug the machine immediately to prevent further damage.

Steps:

Empty hopper: Remove all beans and vacuum out loose grounds.
Inspect burrs: Remove the upper burr and inspect for stones or hard objects. Remove any foreign material.
Check burr condition: If burrs are chipped or heavily worn, replace the burr set.
Tighten mounts: Ensure the grinder is firmly mounted and screws are tight.

Persistent loud noise after cleaning indicates internal grinder damage; replace the grinder assembly.

Medium 3/5

Grinder Burr Set

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