| 1 | The wire in the drainage chamber is cleaned ultrasonically. | |
| 2 | Two wires are attached to the magnet, usually red and black. | |
| 3 | This is because the direct current flows in a wire always in one direction. | |
| 4 | That distinguishes them from "synchronous" motors that use a permanent magnet in their rotors instead of a set of conductors. | |
| 5 | When you contact these two wires, the machine will start at once. |