PDFWAC 246-215-04515
Equipment—Warewashing equipment, cleaning frequency (FDA Food Code 4-501.14).
A warewashing machine; the compartments of sinks, basins, or other receptacles used for washing and rinsing equipment, utensils, or raw foods, or laundering wiping cloths; and drainboards or other equipment used to substitute for drainboards as specified under WAC 246-215-04310 must be cleaned:
(1) Before use;
(2) Throughout the day at a frequency necessary to prevent recontamination of equipment and utensils and to ensure that the equipment performs its intended function; and
(3) If used, at least every twenty-four hours.