A kitchenware washing apparatus has a wash tank and a heated tank connected in a manner that they have a common wall for maximum water heating efficiency. The video indexing apparatus comprises a generation module, a calculation module and a construction module. Another method disclosed includes upgrading the oil in the substrate to improve one or more of the properties of the recovered oil relative to the oil in the substrate, such as, lower aromatics content, lower sulfur content, lower functional group content, higher saturates, higher viscosity, higher viscosity index, and any combination thereof. As a result, the operating state of the three-phase alternating current synchronous motor does not become unstable and the execution of control by the normal operation control unit can be started with the output voltage of the capacitor stable.