The grinder should be cleaned periodically depending on the machine use.
We recommend performing grinder, filter and water tank maintenance every 30 roasts. Your machine will inform you when it's time for some servicing, as it will display a yellow light. If the Berlin beeps and displays a red light, you've left it so long that the grinder may have become blocked and requires some extra love and care (so don't bethat guy!)
The Maintenance Kit includes a new filter, a grinder cleaner and a descaling agent and can be purchased on our website.