Abstract: The interior of a centrifuge is cleaned without disassembly by the steps of flushing the interior of the bowl, introducing a cleaning liquid to the bowl, and rotating the bowl at a low speed in which the centrifugal force and the gravitational force on the cleaning liquid are approximately equal. With this method, the bowl, an axial screw conveyor arranged coaxially within the bowl, and the surfaces of other parts within the bowl are all cleaned by the turbulent body of cleaning liquid. Optionally, the centrifuge bowl may be rotated unidirectionally, or it may be turned for a period of time first in one direction and then for an additional period of time in opposite direction. As a further option, the axial screw conveyor may be rotated at maximum speed differential from the rotational speed of the bowl in order to increase internal turbulence and thereby intensify agitation and scouring by the cleaning liquid.