GB/T 4706.30-2024 Safety of household and similar electrical appliances - Part 30: Particular requirements for kitchen machines
1 Scope
This clause of Part 1 is replaced by the following.
This document deals with the safety of electric kitchen machines for household and similar purposes.
This document applies to electric kitchen machines for household and similar purposes, their rated voltage being not more than 250 V.
Note 101: Examples of appliances that are within the scope of this standard are
——bean slicers;
——berry-juice extractors;
——blenders;
——can openers;
——centrifugal juicers;
——churns;
——citrus-fruit squeezers;
——coffee mills not exceeding 500 g hopper capacity;
——cream whippers;
——egg beaters;
——food mixers;
——food processors;
——grain grinders not exceeding 3 l hopper capacity;
——graters;
——ice-cream machines, including those for use in refrigerators and freezers;
——knife sharpeners;
——knives;
——mincers;
——noodle makers;
——potato peelers;
——shredders;
——sieving machines;
——slicing machines.
Appliances intended for normal household and similar use and that may also be used by laymen in shops, in light industry and on farms, are within the scope of this standard. However, if the appliance is intended to be used professionally to process food for commercial consumption, the appliance is not considered to be for household and similar use only.
Note 102: Use of a kitchen machine in bed and breakfast premises, for example, is considered to be household use.
As far as is practicable, this standard deals with the common hazards presented by appliances which are encountered by all persons in and around the home. However, in general, it does not take into account
——persons (including children) whose
• physical, sensory or mental capabilities; or
• lack of experience and knowledge
prevents them from using the appliance safely without supervision or instruction;
——children playing with the appliance.
Note 103: Attention is drawn to the fact that
——for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may be necessary;
——in many countries, additional requirements are specified by the relevant national regulatory authorities;
Note 104: This standard does not apply to
——slicing machines having a circular knife the blade of which is inclined at an angle exceeding 45° to the vertical;
——food waste disposers (GB/T 4706.49);
——ice-cream appliances with incorporated motor compressors (GB/T 4706.13);
——kitchen machines intended for commercial purposes (GB/T 4706.38);
——kitchen machines intended for industrial purposes;
——kitchen machines intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60811-504:2012 Electric and optical fibre cables - Test methods for non-metallic materials - Part 504: Mechanical tests - Bending tests at low temperature for insulation and sheaths
IEC 60811-505:2012 Electric and optical fibre cables - Test methods for non-metallic materials - Part 505: Mechanical tests - Elongation at low temperature for insulations and Sheaths
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1.9 Replacement:
normal operation
operation of the appliance under the conditions specified in 3.1.9.101 to 3.1.9.119 followed by operation with the most unfavourable load indicated in the instructions. If the conditions are not specified, the appliance is operated with the most unfavourable load indicated in the instructions
3.1.9.101 Berry-juice extractors are fed with 1 kg of berries, such as currants, gooseberries or grapes. Pushers are pressed with a force of 5 N against the berries.
3.1.9.102 Food blenders are operated with the bowl filled to its maximum indicated level with a mixture comprising two parts by mass of soaked carrots and three parts water. If this level is not indicated, the bowl is filled to two-thirds of its total capacity. The carrots are soaked in water for 24 h and cut so that the dimensions of the pieces do not exceed 15 mm. If the bowl is not provided, a cylindrical bowl is used which has a capacity of approximately 1 l and an inner diameter of approximately 110 mm.
Liquid blenders are operated with water instead of the mixture.
3.1.9.103 Can openers are operated with cans of tinned steel having a diameter of approximately 100 mm.
3.1.9.104 Juicers are operated with carrots that have been soaked in water for approximately 24 h. 5 kg of soaked carrots are gradually fed into juicers having separate outlets for the juice and residue. Other juicers are fed with batches of 0.5 kg of carrots, unless otherwise indicated in the instructions. Pushers are pressed with a force of 5 N against the carrots.
3.1.9.105 Cheese graters are operated with a 250 g piece of hard Parmesan cheese selected from a block of cheese about 16 months old and which has at least one plane surface. A force of 10 N is applied to the cheese unless the force is applied automatically.
3.1.9.106 Churns are filled with a mixture of eight parts by mass of heavy cream and one part of buttermilk. The quantity of the mixture is the maximum that allows the churn to operate without spillage.
3.1.9.107 Citrus-fruit squeezers are operated with orange halves pressed against the reamer with a force of 50 N.
3.1.9.108 Coffee mills having a separate container for collecting the ground coffee are operated with the hopper filled with roasted coffee beans.
Other coffee mills are operated with the hopper filled with the maximum quantity of roasted coffee beans stated in the instructions.
Note: If necessary, the coffee beans are conditioned for 24 h at a temperature of 30 °C ± 2 °C and a relative humidity of 60 % ± 2 %.
Controls are set to the position resulting in the smallest grain size.
3.1.9.109 Cream whippers and egg beaters are operated in water with 80 % of the length of the effective part immersed in a bowl of water.
3.1.9.110 Food mixers with beaters for mixing cake batter are operated with the beater blades as close as possible to the bottom of a bowl containing dry sand having a grain size between 170 µm and 250 µm. The height of the sand in the bowl is approximately 80 % of the length of the effective part of the beater.
Food mixers with kneaders for mixing yeast dough are operated with the kneaders in a bowl filled with a mixture of flour and water.
Note 1: The flour has a protein content of 10 % ± 1 %, based on a negligible water content of the flour and without chemical additives.
Note 2: In case of doubt, the flour is more than two weeks but less than four months old. It is stored in plastic bags with as little air as possible.
The bowl is filled with a mass of flour in grams equal to 35 % of its capacity in cm3, 72 g of water at a temperature of 25 °C ± 1 °C being added for each 100 g of flour.
Note 3: In case of doubt, the quantity of water is 1.2 times that necessary for the consistency of the mixture to be 500 Brabender units at 29 °C ± 1 °C, measured using a farinograph.
For hand-held food mixers, the kneaders are moved in a figure-of-eight movement at a rate of 10 to 15 movements per minute. The kneaders are to touch the wall of the bowl at opposite points and be in contact with the bottom of the bowl. If a bowl is not provided, a bowl is used that has a height of approximately 130 mm and an inner diameter of approximately 170 mm at the top, tapering down to approximately 150 mm at the bottom. Its inner surface is smooth and the wall and bottom blend smoothly.
3.1.9.111 Food processors are operated as specified for food mixers with kneaders for mixing yeast dough. However, the quantity of the mixture is the maximum stated in the instructions. If an accessory rotating at high speed is used to prepare the dough, only 60 g of water is used for each 100 g of flour.
Note 1: In case of doubt when using an accessory rotating at high speed, the quantity of water is that necessary for the consistency of the mixture to be 500 Brabender units at 29 °C ± 1 °C, measured using a farinograph.
Note 2: If instructions for mixing yeast dough are not provided, the food processor is operated using the recipe which results in the most unfavourable conditions.
3.1.9.112 Grain grinders are operated with the hopper filled with wheat, controls being set to the position resulting in the smallest grain size.
Note 1: If necessary, the wheat is conditioned for 24 h at a temperature of 30 °C ± 2 °C and a relative humidity of 60 % ± 2 %.
Note 2: Corn is used instead of wheat when instructions state that it can be ground.
3.1.9.113 Ice-cream machines are operated with a mixture of 60 % water, 30 % sugar, 5 % lemon juice and 5 % beaten egg white by mass. The quantity of the mixture is the maximum stated in the instructions. If there is no stated maximum, the container will be filled up to the maximum capacity.
Removable elements for cooling ice cream are pre-cooled for 24 h at -20 °C ± 5 °C.
For appliances cooled by ice, the cooling container is filled with ice in accordance with the instructions, 200 g of salt being added for each kg of ice.
Ice-cream machines for use in refrigerators and freezers are placed on thermal insulating material approximately 20 mm thick. They are operated without load at an ambient temperature of -4 °C ± 1 °C.
3.1.9.114 Knives are operated by slicing a length of hard sausage when measuring the power input. The sausage is approximately 55 mm in diameter and cut into slices approximately 5 mm thick, a force of approximately 10 N being applied to the knife. The sausage is stored for at least 4 h at a temperature of 23 °C ± 2 °C before slicing.
Note: Salami is a suitable hard sausage.
For the other tests, knives are operated with the cutting edge of the blade pressed against a length of soft wood having a cross-section approximately 50 mm × 100 mm. A force is gradually applied to the knife until the power input measured when cutting the sausage is
obtained.
3.1.9.115 Mincers are fed with sinewless, boneless and fatless beef that has been cut into pieces approximately 20 mm × 20 mm × 60 mm. Pushers are pressed with a force of 5 N against the meat.
Note: A brake may be used to apply the mean value of the load that is determined by mincing the meat for 2 min.
3.1.9.116 Noodle makers without a mixing function are fed with dough prepared from 225 g wheat flour, 1 egg (approximately 55 g), 15 ml cooking oil and 45 ml water. Pushers are pressed with a force of 5 N against the dough.
