Detail of GB/T 4706.95-2024

Introduction of GB/T 4706.95-2024

Safety of household and similar electrical appliances - Part 95 : Particular requirements for commercial electric hoods 1 Scope This clause of GB/T 4706.1-2024 is replaced by the following. This standard deals with the safety of electrically operated commercial hoods intended for installation above commercial cooking appliances such as ranges, griddles, griddle grills and deep fat fryers, and not intended for household and similar use. This standard applies to the single phase hoods connected between one phase and neutral with the rated voltage not more than 250 V, and 480 V for other hoods. Only single complete units and hoods supplied as separate parts which when assembled form a complete working hood, incorporating a fan, are within the scope of the standard. The following extraction systems are covered as well: - back draft ventilation systems; - downdraft ventilation systems; - fume extraction modules. Note 101: Hoods are used, for example in kitchens of restaurants, canteens, hospitals and in commercial enterprises such as bakeries, butcheries, etc. The hood may be used above one or more appliance of the same or different types. So far as is practicable, this standard deals with the common hazards presented by these types of appliances. Note 102: Attention is drawn to the fact that: – for hoods intended to be used in vehicles or on board ships or aircraft, additional requirements may be necessary; – in many countries additional requirements including ventilation requirements are specified by the national health authorities, the national authorities responsible for the protection of labour and similar authorities; − for hoods incorporating a filter system with means for ionizing the air, IEC 60335-2-65 also applies. Note 103: This standard does not apply to: – domestic range hoods (IEC 60335-2-31); – purpose-built hoods, although this standard can be used as a guide (a purpose-built hood is either constructed on-site or specially constructed in the factory and is not mass produced); – hoods not incorporating a fan; – hoods designed exclusively for industrial purposes; – hoods intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas). Note 104: Requirements for hoods with externally mounted fans are under consideration. 2 Normative references This clause of GB/T 4706.1-2024 is applicable except as follows. Addition: ISO 898-1 Mechanical properties of fasteners made of carbon steel and alloy steel – Part 1: Bolts, screws and studs with specified property classes – Coarse thread and fine pitch thread Note: GB/T 3098.1-2010 Mechanical properties of fasteners - Bolts, screws and studs (ISO 898-1:2009, MOD) ISO 3506-1 Mechanical properties of corrosion-resistant stainless steel fasteners – Part 1: Bolts, screws and studs Bolts, screws and studs with specified grades and property classes) Note: GB/T 3098.6-2023 Mechanical properties of fasteners - Stainless steel bolts, screws and studs (ISO 3506-1:2020, MOD) ISO 3506-2 Fasteners-Mechanical properties of corrosion-resistant stainless steel fasteners-Part 2: Nuts with specified grades and property classes Note: GB/T3098.15-2023 Mechanical properties of fasteners - Stainless steel nuts (ISO 3506-2:2020, MOD) ISO 3506-3 Mechanical properties of corrosion-resistant stainless steel fasteners-Part 3: Set screws and similar fasteners not under tensile stress Note: GB/T 3098.16-2014 Mechanical properties of fasteners - Stainless steel set screws (ISO 3506-3:2009, MOD) ISO 3506-4 Mechanical properties of corrosion-resistant stainless steel fasteners - Part 4 : Tapping screws) Note: GB/T 3098.21-2014 Mechanical properties of fasteners - Stainless steel tapping screws (ISO 3506-4:2009, MOD) 3 Terms and definitions This clause of GB/T 4706.1-2024 is applicable except as follows. 3.1.4 Addition: Note 101: The rated power input is the sum of the power inputs of all the individual elements in the hood which can be on at one time; where several such combinations are possible, that giving the highest power input is used in determining the rated power input. 3.1.9 Replacement: normal operation operation of the appliance under the following conditions The hood is operated after installation in accordance with the instructions, except that it is not connected to a duct. 3.101 hood motor-operated appliance intended to collect and remove contaminated air from cooking catering appliances Note: The contaminated air may pass through a filter system and be discharged back into the room or removed from the room. 4 General requirement This clause of GB/T 4706.1-2024 is applicable. 5 General conditions for the tests This clause of GB/T 4706.1-2024 is applicable. 6 Classification This clause of GB/T 4706.1-2024 is applicable except as follows. 6.1 Replacement: Hoods shall be class I with respect to protection against electric shock. Compliance is checked by inspection and by the relevant tests. 7 Marking and instructions This clause of GB/T 4706.1-2024 is applicable except as follows. 7.1 Addition: Hoods shall be marked on or near the lampholder with the maximum power input of replaceable illumination lamps as follows: “lamp max..... W” or “max.....W” 7.12 Addition: The instructions for use shall state the substance of the following: – there shall be adequate air intake into the room when the hood is used at the same time as appliances burning gas or other fuels; – the details concerning the method and frequency of cleaning and that filters shall be cleaned regularly; – there is a fire risk if cleaning is not carried out in accordance with the instructions; – do not flame under the hood. The instructions shall include the substance of the following: These appliances are intended to be used for commercial applications, for example in kitchens of restaurants, canteens, hospitals and in commercial enterprises such as bakeries, butcheries, etc., but not for continuous mass production of food. If the manufacturer wants to limit the use of the appliance to less than the above, this has to be clearly stated in the instructions. Modification: The instructions concerning persons (including children) with reduced physical, sensory or mental capabilities or lack of experience and knowledge and children playing with the appliance are not applicable. 7.12.1 Replacement: The hood shall be accompanied by instructions detailing any special precautions necessary for installation. The instructions for installation shall state: – the minimum distance between the appliance and the lowest part of the hood; – that regulations concerning the air intake and discharge of exhaust air have to be fulfilled; – that ventilation requirements specified for the cooking equipment shall be observed; – that special consideration is needed when there are other open flued appliances in the same room to prevent back suction of flue gasses; – that if the hood is used above a gas appliance, a non-self-resetting device that turns off the gas supply to the appliance if the hood stops operating shall be installed in accordance with national gas regulations; – that the installation of the hood must not infringe gas regulations; Instructions for user maintenance, for example cleaning, shall also be given. They shall include a statement that the hood is not to be cleaned with a water jet or a steam cleaner. Compliance is checked by inspection. 7.14 Addition: The marking for maximum power input of a replaceable illumination lamp shall be visible during replacement of the lamp. 7.101 Equipotential bonding terminals shall be marked with Symbol 5021 of IEC 6041 7-1 . These markings shall not be placed on screws, removable washers or other parts which can be removed when conductors are being connected. Compliance is checked by inspection.

Contents of GB/T 4706.95-2024