196.485. 1. The refrigeration system for a locker plantshall be equipped with accurate and reliable controls for theautomatic maintenance of uniform temperatures, provided thisshall not apply to locker plants having constant temperaturesupervision.
2. Temperatures shall be maintained in the respective roomsas follows:
(1) Chill room, temperatures within two degrees plus orminus of thirty-seven degrees or lower with a tolerance of tendegrees for a reasonable time after fresh food is placed in thechill room;
(2) Quick or sharp freeze room--quick or sharp freezecompartments: Temperatures of ten degrees below zero or lower inrooms where still air cooling is employed and temperatures ofzero degrees or lower in rooms where forced air circulation isemployed, with a tolerance of ten degrees for either type ofinstallation for a reasonable time after putting fresh food intothe freezer;
(3) Locker room, temperatures of zero degrees or lower, witha tolerance of five degrees above zero degrees.
3. The locker room shall be equipped with aself-registering, accurate recording thermometer. Chill room andsharp freeze room shall be equipped with an accurate, directreading thermometer.
4. Thermometer charts shall be available for inspection atthe locker plant by agents of the commission and shall bepreserved for at least a period of one year from date ofrecording.
(L. 1945 p. 940 ยง 8)