Breville BES870 how to clean the burr grinder
When oil build-up on the burrs affects grinding, or the grinder is noisy or delivers no coffee. A blockage between the burrs and the outlet needs the advanced cleaning on page 25 of the instruction book.
You need
- Cleaning brush
Steps
- Unlock and remove the hopper and empty the beans.
- Refit and lock the empty hopper.
- Run the grinder empty to clear the remaining coffee.
- Unlock and remove the hopper again.
WARNING
The grinder burrs are extremely sharp.
Marked WARNING by the manufacturer Source: Care & Cleaning: Cleaning the conical burr grinder, p. 25
- Unlock and lift out the top burr.
Drawing based on the figure in the Barista Express Instruction Book, BES870 (English, Canadian French and Mexican Spanish edition), revision X20, section Cleaning the conical burr grinder, p. 25. Not a photograph. - Brush the top burr, the lower burr and the chute clean.
Source: Care & Cleaning: Cleaning the conical burr grinder Source: Care & Cleaning: Cleaning the conical burr grinder, p. 25
Other BES870 procedures
- How to run the cleaning cycleWhen the CLEAN/DESCALE light flashes. This back-flush cycle is separate from descaling.
- How to descaleWhen the CLEAN/DESCALE light stays on (not flashing).
- How to replace the water filterEvery 2 months, more often in hard-water areas. Remove the filter if you use filtered or bottled water.
- How to clean the steam wandAfter every use, and when steam is weak or the tip is blocked.
- How to replace the group-head sealWhen espresso or water leaks around the portafilter because the silicone seal no longer seals.
Sources
- the Barista Express Instruction Book, BES870 (English, Canadian French and Mexican Spanish edition). Breville Pty Ltd. Document BES870 USCM, revision X20, 2020, 112 pages, en-US. assets.breville.com (PDF). Retrieved 12 November 2026.
Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.