What feature must automatic dishwashers have regarding their operation?

Automatic dishwashers are vital in ensuring that dishes, utensils, and kitchen equipment are sanitized effectively. For operators to use these machines correctly, it is essential that information about the correct settings is clearly posted on the machine itself. This signage helps staff easily understand how to operate the dishwasher safely and effectively, ensuring that they select the right cycle for different types of loads, which is necessary for achieving proper sanitation and cleaning standards.

Having the proper settings indicated promotes not just efficiency but also compliance with health regulations that govern the operation of food service equipment. It minimizes the risk of human error and guarantees that all items are washed according to the required standards of cleanliness and hygiene that are crucial in a food handling environment.

While the other features mentioned might seem appealing or beneficial in certain contexts, they do not necessarily fulfill the fundamental operational requirement that aids compliance and promotes food safety practices, making the posted information about settings the most critical feature for automatic dishwashers in a food handling setting.