Abstract: A method for centrifugally processing a flowable product with a separator and for rinsing and/or CIP cleaning the separator is provided. The separator has a rotatable drum and a product flow path for a flowable product to be processed in a centrifugal field in the drum. Product flows along the product flow path during the centrifugal processing in a product flow direction. The centrifugal processing of a product is interrupted and rinsing or CIP cleaning of at least one part of the product paths of the drum of the separator in the product flow direction is performed and rinsing or CIP cleaning of at least one part of the product paths of the drum entirely or partially opposite the product flow direction is performed. The centrifugally processing the product is then resumed.