How the kaeser compressor works

208 V, 230 V, 460 V (17). 230 V, 460 V (7). Kaeser Zander Aachen ENQ42K rotary screw air compressor controller SX SM. 1 Phase / 3 Phase (2). 208 V, 230 V (4). 460 V / 60 Hz (2). 230 V / 60 Hz (4). In very nice condition with minimal use.