Appliances and equipment in the food preparation area shall be: Cleaned and sanitized; In good repair; Capable of normal operation; and Not conducive to the harboring of insects and rodents. Food contact surfaces shall be nontoxic, smooth, in good repair, and free of breaks, open seams, cracks, pits, and similar imperfections. Refrigeration shall be: Of sufficient capacity to store all food and beverages that require refrigeration; Operated at or below 40°F; and Equipped with an indicating thermometer graduated at 2°F intervals. All frozen food units shall be operated at 0°F or less, and shall be provided with an indicating thermometer. Utensils and equipment used for the preparation and service of food and beverages shall be cleaned, sanitized, air dried, and stored in a manner approved by the office.