Why has my coffee grinder seized?

by Paul Sadler

  • I see this from time to time. The main reason this happens is that people move the coffee grinder setting from coarse back to fine without pulsing at intervals, resulting in large bean fragments getting caught between the burrs.
  • If this happens, back the grid size off to coarse, then pulse the grinder, at small (1cm) intervals, as you work your way back to fine.   
  • If you still can’t produce a fine grind and cannot turn the collar there's a chance that a foreign object, such as a stone, has that made it into the coffee grinder.
  • The next step is to remove the top burr and clean out the coffee grinder.   
  • To clean out the grinder you need to unplug the grinder, remove the hopper, unscrew the collar, tip the grinder to empty out the beans, vacuum the chamber, then reassemble.
  • If you still have problems there may be a blockage in the chute of your coffee grinder. To remove the blockage unravel a paperclip, stick it up the chute and jiggle it around.   
  • From here it's back to the start so go to my "How do I set up my grinder for the first time?" page by clicking here.

Note - The FAQ above applies to traditional domestic coffee grinders.