Abstract: A vibration monitoring system (109) for a liquid food producing apparatus, comprising: data storage means (130) storing nominal vibration data (170), said nominal vibration data representing the nominal vibration performance of the liquid food producing apparatus; data acquisition means (110) acquiring acquired vibration data (160), said acquired vibration data pertaining to the vibration of the liquid food producing apparatus while functioning; data processing means (120) processing said acquired vibration data (160) into at least processed vibration data (165), said processed vibration data being of a similar format than the nominal vibration data (170); data comparison means (140) yielding a comparison information (175) representative of the comparison of said processed vibration data (165) and said nominal vibration data (170); and display means (155), or display connection means for connecting display means, for displaying said comparison information (175) and/or information issued from said compariso