Detail of GB/T 4706.87-2024

Introduction of GB/T 4706.87-2024

GB/T 4706.87-2024 Safety of household and similar electrical appliances - Part 87: Particular requirements for commercial spray extraction machines 1 Scope This clause of GB/T 4706.1-2024 is replaced by the following. This document specifies the safety requirements for electric spray extractors. This Standard deals with the safety of electrical portable, non-self-propelled motor-operated spray extraction machines with or without attachments and with or without electrical heating elements, intended for commercial indoor use. Note 101: This standard applies to machines for commercial use. The following list, although not comprehensive, gives an indication of locations that are included in the scope: ——public use areas such as hotels, schools, hospitals; ——industrial locations, for example factories and manufacturing shops; ——retail outlets, for example shops and supermarkets; ——business premises, for example offices and banks; ——rental services for those machines; ——all uses other than normal housekeeping purposes. They are not equipped with a traction drive. The following power systems are covered: ——mains powered motors up to a rated voltage of 250 V for single-phase appliances and 480 V for other appliances, ——battery powered motors. This standard applies to machines in which the pressure of the employed cleaning agent does not exceed 2.5 MPa, and in which the product of the pressure (in MPa) and the flow of cleaning agent (in litres per minute) does not exceed 100, and in which the temperature of the cleaning agent at the spray nozzle outlet does not exceed 85 °C. This standard does not apply to ——vacuum cleaners and water-suction cleaning appliances for household use (IEC 60335-2-2); ——floor treatment machines for commercial use (IEC 60335-2-67, IEC 60335-2-72); ——wet and dry vacuum cleaners, including power brush, for commercial use (IEC 60335-2-69); ——hand-held and transportable motor-operated electric tools (IEC 60745 series, IEC 61 029 series, IEC 62841). ——machines designed for use in corrosive or explosive environments (dust, vapour or gas); ——machines designed for picking up hazardous dusts (as defined in IEC 60335-2-69), inflammable substances, or glowing particles; ——machines designed to handle hazardous solvents, such as flammable or explosive liquids; Note 102: Attention is drawn to the fact that in many countries, additional requirements on the safe use of the equipment covered can be specified by the national health authorities, the national authorities responsible for the protection of labour, the national water supply authorities and similar authorities. 2 Normative references This clause of GB/T 4706.1-2024 is applicable except as follows. Addition: ISO 6344-2, Coated abrasives - Grain size analysis – Part 2: Determination of grain size distribution of macrogrits P12 to P220 IEC 62885-2, Surface cleaning appliances-Part 2: Dry vacuum cleaners for household or similar use - Methods for measuring the performance 3 Terms and definitions This clause of GB/T 4706.1-2024 is applicable except as follows. 3.1.9 Replacement: normal operation conditions under which the machine is operated in normal use, specified as follows: the machine is operated with the spray extraction pump with the nozzle giving the highest load, the vacuum motor, the device for agitating the carpet pile (if any), the cleaning agent heater (if any) and the soiled water discharge pump (if any) all in use. Any marking of short time intermittent operation of the pumps is observed The normal operation P m of the vacuum motor is obtained at the following power input: Pf and Pi are measured with the supply voltage adjusted to rated voltage, or to a voltage equal to the mean value of the rated voltage range if the difference between the limits of the rated voltage range does not exceed 10 % of the mean value of the range. If the difference between the limits of the rated voltage range exceeds 10 % of the mean value, the tests are carried out with the supply voltage set to the upper limit of the range. The hose is laid out straight. If the machine is provided with a hose as an optional accessory, it is operated without the hose. Electrically driven devices for agitating the carpet, if any, are in operation but are not in contact with the floor or any other surface or with the means used to seal the air inlet. The adjustment of the air inlet is not altered when it is specified that the machine is operated under normal load, irrespective of the supply voltages specified in the test. Where optional filtration systems are supplied with the spray extraction machine, the filtration system giving the least air resistance (maximum flow) is fitted. The normal load is equal to the mean load Pr for the electrically driven agitating device such as a motor driven brush is determined in accordance with the following: —— the agitating device operates on a carpet as specified in IEC 62885-2 ; ——the mean load Pr is determined when using the device in the following way: After setting the device, the device is moved twice over a distance of 5 m in the direction giving the highest load; ——the motor responsible for the airflow operates under the same conditions as determining Pf , i. e. no airflow restrictions, and measurements are taken after 3 min; ——the device is adjusted to the carpet pile height; ——it is necessary to move the agitating device slowly across the carpet to avoid carpet damage. Soiled water discharge pumps, if applicable, are operated as follows. The pump delivers a continuous flow of water without any soiled water discharge hose attached to the soiled water outlet of the machines unless the discharge hose is permanently attached to the machine. The vacuum motor works during the test, unless an interlock device is provided to prevent combined operation of both motors. Socket-outlets for accessories are loaded with a resistive load in accordance with the marking. 3.101 cleaning agent pre-heater electric heating element which is intended to raise the temperature of the cleaning agent to operating temperature before the cleaning operation 3.102 cleaning agent heater electric heater which is intended to maintain the cleaning agent at the correct temperature for effective operation 3.103 cleaning agent water with or without the addition of soluble or miscible detergent 3.104 spray extraction machine machine with or without heating elements and with or without attachments, by which a cleaning agent under pressure is sprayed into or onto the surface to be cleaned and the remaining soiled cleaning agent is removed by suction 3.105 maximum rated operating pressure maximum pressure generated by the pump when operated at rated voltage 3.106 water-suction cleaning machine machine for applying and extracting a cleaning agent 3.107 motorized cleaning head hand-held or hand-guided cleaning device connected to the machine, with an integrated electrical motor Note: The permanently attached main cleaning head is not regarded as a motorized cleaning head. 3.108 operator person installing, operating, adjusting, cleaning, moving, or performing user maintenance on the machine 3.109 test solution solution which consists of 20 g of NaCl and 1 ml of a solution of 28 % by mass of dodecyl sodium sulphate in each 8 l of water Note: The chemical designation formula of for dodecyl sodium sulphate is C12H25NaSO4. 3.110 commercial use intended use of machines covered by this standard, i.e. not intended for normal housekeeping purposes by private persons but which may be a source of danger to the public I.e. in particular that ——the machines may be used by cleaning contractors, cleaning staff, etc.; ——they are used in commercial or public premises (i.e. offices, shops, hotels, hospitals, schools, etc.) or in industrial (plants, etc.) and light industrial (workshops, etc.) environments. Note: Commercial use is also called professional use. 4 General requirement This clause of GB/T 4706.1-2024 is applicable except as follows. Replacement of the first paragraph by the following text: Machines shall be constructed so that they function safely so as to cause no danger to persons or surroundings during normal use, even in the event of carelessness, and during installation, adjusting, maintenance, cleaning, repairing or transportation.

Contents of GB/T 4706.87-2024