Device for changing a pump unit of a centrifugal pump and centrifugal pump

A device for changing a pump unit of a centrifugal pump, the pump unit and a stator extending in an axial direction from a first axial end to a second axial end, a cup-shaped recess is provided at the first axial end, into which the pump unit is capable of being inserted, the pump unit comprises a pump housing with a cup capable of being inserted into the cup-shaped recess of the stator, a rotor for conveying a fluid is arranged in the pump housing, the rotor having a magnetically effective core, the rotor is capable of being rotated about the axial direction, and the stator designed for a non-contact magnetic drive and a non-contact magnetic levitation of the rotor, the rotor is passively magnetically stabilized with respect to the stator at least in the axial direction, the device comprising:

• an actuating device configured to exert a mechanical force on the pump unit, the mechanical force acting in the axial direction and being directed in such a way as to separate the pump unit from the stator in axial direction.