| 摘要 |
A beverage preparation machine comprising : a seat (5); an ingredient holder (13) that has a processing configuration and a transfer configuration; and a service unit (20, 30) having an operative position in the seat and being removable from the seat. A mechanical locking device (53) is provided to : mechanically detect a position of the service unit and mechanically prevent the ingredient holder from taking its processing configuration when the service unit is off its operative position; and/ or mechanically detect a configuration of the ingredient holder and mechanically prevent removal of the service unit from the seat when the ingredient holder is in its processing configuration.
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