This specification covers single tank, automatic rack type, hot water sanitizing commercial dishwashing machines. Covered by this specification are dishwashing machines of various types (Types I and II based on feed direction, from right or left, respectively), styles (Styles 1-3 based on method of heating: steam, electric, or gas), classes (Classes A-D based on heat source: injector, heat exchange coil, natural gas, or LP gas), sizes, and capacities. Components comprising the dishwashing machine shall be manufactured from corrosion-resistant steel (tank, scrap trays or strainers, overflow drain, access door/s, and legs), corrosion-resisting materials (conveyor, piping and fittings, valves, and spray assemblies), nickel-copper alloys, and plastics. Pump casings shall be of cast iron or corrosion-resisting material. When specified, the dishwashing machine assembly may include a final rinse booster, detergent feeder, and rinse agent feeder. The dishwashing machine shall be tested for performance standards compliance and noise level as well as for operational, leakage, and performance profile requirements. All tests shall comply with the requirements specified.