I have a saeco royal my machine is grinding beans but will not stop

When your coffee is being grinned, it is being sent in a dosing compartment. Once there's enough coffee in it, it pushes on the dosing switch to tell the grinder motor to stop. Then, the "door" of the compartment opens to let the coffee fall into the brewing unit.
From this, there's two possible problem that might be worth checking.

First, check if the switch is working properly, is clogged or dirty.

Second, check if the door of the dosing compartment is closed. (should be closing with a spring)

If the door is kept open during grinding, the coffee won't add up in the dosing compartment and therefore, your machine won't know when there's enough coffee.


Hope this helps

Your question is not right.
Grinder stops on its own in 16 to 18 seconds (times out).
It may not be grinding beans an spinning free because the beans are not feeding.
You may have used oily beans or set the grind fineness at very fine powder like. This powder like fineness also clogs the grinder..
You need to clean the grinding chamber and the ground coffee outlet.

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