dishwasher

A dishwasher is a mechanical device for cleaning dishware and cutlery automatically. Unlike manual dishwashing, which relies largely on physical scrubbing to remove soiling, the mechanical dishwasher cleans by spraying hot water, typically between 45 and 75 °C (110 and 170 °F), at the dishes, with lower temperatures used for delicate items.A mix of water and dishwasher detergent is pumped to one or more rotating spray arms, which blast the dishes with the cleaning mixture. Once the wash is finished, the water is drained, more hot water enters the tub by means of an electro-mechanical solenoid valve, and the rinse cycle begins. After the rinse cycle finishes and the water is drained, the dishes are dried using one of several drying methods. Typically a rinse-aid, a chemical to reduce surface tension of the water, is used to reduce water spots from hard water or other reasons.In addition to domestic units, industrial dishwashers are available for use in commercial establishments such as hotels and restaurants, where a large number of dishes must be cleaned. Washing is conducted with temperatures of 65–71 °C (149–160 °F) and sanitation is achieved by either the use of a booster heater that will provide an 82 °C (180 °F) "final rinse" temperature or through the use of a chemical sanitizer.
A dishwasher has 6 main cycles usually with different options. Rinse and hold is a quick rinse cycle with no drying or detergent for a quick rinse off of dishes. Express is a 60-minute wash usually with drying for washing a small to medium-large load of pre rinsed dishes. Delicate is for a delicate load of prerinsed dishes. It is an energy effiecent cycle. It needs less detergent. It uses mild hot water and a mild dry. Normal is an energy efficient cycle too. It is meant for a regular load of normally stained dishes. It uses mild hot water to save energy and has only 1 or 2 rinses. It has a good drying cycle. Auto or Sensor wash is the recommended wash for most dishes. It uses a turbidity sensor to sense the soil on dishes. it adjusts the water and heat to adapt to the dishes soilness. This is mildly energy efficient. Heavy is meant for heavily soiled dishes and pots and pans. It also sanitizes the dishes on most dishwashers. It sprays a concentrated hot water jet and a super hot rinse cycle. Dishwashers also have additional options. Sanitize raises the rinse water to 160 °F and extends the drying time. This is meant for sick people and dishes exposed to raw meat. High temperature wash raises the wash temperature for a better wash. Extra dry makes the dishes dry better.

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