614M Operator’s Manual for Drucker Centrifuge 614M for 13.8V DC operation. 613 Operator’s Manual for Drucker Centrifuge 613 for 115V, 60Hz operation. Metal Cabinet 614B, L, U, UL, V and VL Prior to 6/2003 Operator’s Manual for Metal Cabinet Drucker Centrifuges 614B, U, UL, V, and VL for 115V, 60Hz operation. 614D Operator’s Manual for Drucker Centrifuge 614D for 115V, 60Hz operation