The present invention provides methods for preparing at least pasteurized hydrated emulsifier compositions. The apparatus comprises a center beam member having at least one recessed portion disposed adjacent an upper surface of the center beam member for forming a lowered center portion. Data, transmitted by a terminal, at a subframe of the second cell is received. The processor is coupled to the at least one medical device interface to process data from the at least one medical device. The current until the clutch engages is set so as to correspond to a state in which a maximum current according to the revolving speed is required and is varied according to the revolving speed of the rotary shaft to reduce power consumption and the size of the electromagnetic coil.