All coffee grinders sometimes emit sounds that can sound unusual during operation, which might be unfamiliar to some users. In the accompanying video released by Bezzera, you can listen to typical noises that may emanate from a coffee grinder.
These sounds often result from the interaction between the coffee beans and the grinder burrs, and are completely normal.
Adjusting the burrs to create a coarser grind generally reduces these noises.
There is no cause for concern or risk of damage under normal operation conditions. However, if the coffee grind is set extremely fine, to 6 grams or less for a single shot, it could potentially cause too much friction.
If you are concerned about maintaining your grinder, be aware that the most significant risk to the mechanism arises from foreign objects like stones or metal fragments that can inadvertently mix with the coffee beans. This commonly occurs during the drying phase of the coffee beans.
It is essential to obtain your coffee from reputable roasters who rigorously destone the beans. Ideally, the coffee should be subjected to multiple destoning processes, beginning at the farm and continuing at the roaster. It’s also important that the destoning equipment is well-maintained. A trustworthy roaster will be able to confidently verify that these preventive steps have been taken.
Established coffee roasters, especially those from Italy like Arcaffe and Le Piantagioni pours a lot of resources to keep not only their coffee roasted consistently and well preserved. They put a lot of concern on the destoning processes.
