“Open-air barbecue” means a piece of equipment designed for barbecuing food, where the food is prepared out of doors by cooking directly over hot coals, heated lava, hot stones, gas flame, or other method approved by the department, on equipment suitably designed and maintained for use out of doors, that is operated by a temporary food facility, a catering operation, or a mobile food facility that remains fixed during hours of operations at a community event or a permanent food facility.