This chapter in the scope GB4706.1-2005 is replaced by the following: This part of GB4706 covers the safety of commercial electric forced convection ovens, steam cookware, and steam convection ovens that are not intended for household use. For single-phase appliances connected to a phase line and a neutral line, the rated voltage shall not exceed 250 V, and for other appliances, it shall not exceed 480 V. Note 101: This type of appliance is used in kitchens such as restaurants, food stores, hospitals, and commercial enterprises such as bakeries and meat shops. The electrical part of appliances that utilize other forms of energy is also within the scope of this section. This section deals with common hazards caused by such appliances. Note 102: The following situations should be noted: - Necessary additional requirements are allowed for equipment intended for use on vehicles, ships, or aircraft—— In many countries, there are additional requirements imposed by national health, labor protection, water supply, and other similar authorities nationwide—— In many countries, additional requirements have been established for pressure vessels. Note 103: This part does not apply to: - cooking processes that not only directly use steam to come into contact, but also allow food to be partially or completely immersed in liquids—— Appliances used in places with special conditions such as corrosive or explosive air (dust, steam, or combustible gas)—— Equipment for continuous production of food in large quantities—— The content of this chapter in the normative reference document GB 4706.1-2005 for microwave ovens (GB 4706.90) is applicable. The following terms and definitions apply to this section. This chapter in GB 4706.1-2005 applies except for the following content. 3.1.4 Add the following content to this clause: Note 101: Rated input power is the sum of the input power of all individual components that can work simultaneously within the appliance. When there may be several such combinations, the maximum input power combination is used to determine the rated input power. 3.1.9 Replace this clause with the following content:; Normal operation appliances operate under the following conditions: dry heat appliances operate without load when all brackets or carriage trolleys are placed in the corresponding positions according to the manufacturer's instructions. Adjust the periodic controller to maintain the average temperature of each geometric center in the furnace at 220 ℃± 4 ℃, and adjust the temperature of the hierarchical controller to 220 ℃± 15 ℃. If the furnace temperature cannot reach 220 ℃, adjust the controller to the maximum limit. If the furnace temperature can exceed 270 ℃, adjust the controller to make the average temperature 50 ℃± 4 ℃ lower than the highest possible temperature