GB 4706.38-1997 Safety of household and similar electrical appliances Special requirements for commercial electric food processing machinery GB4706.38-1997 Standard download and decompression password: www.bzxz.net

GB4706.381997 | . This standard should be used in conjunction with GB4706.1-92 "General safety requirements for household and similar electrical appliances".
The safety standards for household and similar electrical appliances consist of two parts. The first part is the general requirements, and the second part is the special safety requirements for the product.
The part of this standard that says "applicable" means that the corresponding provisions in GB4706.1-92 are applicable to this standard; the part of this standard that says "replace" or "modify" should be based on this standard. The provisions in the standard shall prevail; the part marked "added" in this standard means that in addition to complying with the corresponding provisions of GB4706.1-92, it must also comply with the added provisions in this standard. This standard is proposed by the Industrial Department of the Ministry of Domestic Trade. This standard is under the jurisdiction of the Commercial Electrical Food Processing and Service Equipment Subcommittee of the National Technical Committee for Standardization of Household Electrical Appliances. This standard was drafted by: National Catering Service Machinery Quality Supervision and Inspection Center. The main drafters of this standard: Gu Xiru, Xia Xiaoli, Wang Shujing, and Mao Suhua. GB4706.38—1997
IEC Foreword
1) A formal resolution or agreement of the IEC on technical issues formulated by a technical committee with the participation of all national committees with special concerns, expressed as closely as possible to achieve international consensus on the issues involved. 2) These resolutions or agreements are in the form of recommendations for international use and are accepted by all national committees in this sense. 3) In order to promote international uniformity, IEC hopes that all national committees should adopt IEC to the extent that their domestic circumstances permit. The contents of the standards serve as regulations for their countries. Any differences between the standards recommended by IEC and the corresponding national standards should be clearly stated in the national standards as much as possible.
IEC Preface
This publication was developed by Subcommittee 61E "Safety of Commercial Electrical Food Processing and Service Equipment" of IEC Technical Committee 61 "Safety of Household and Similar Electrical Appliances". It forms the first edition of the IEC335-2-64 publication. The text of this publication was determined in accordance with the following documents: June Law
61E(CO)77
The details of the vote that approved this publication can be found in the vote report shown in the table above. Voting Report
61E(CO)98
This Part 2 is to be used in conjunction with the IEC335-1 publication. It is based on the second edition (1976), second printing (1983), including revisions No. 1 (1977), No. 2 (1979) and No. 3 (1982), and is based on revisions No. 4 (1984), No. 5 (1986) and No. 6 (1988) were formulated. This should be taken into account in future new versions of IEC335-1 publications or their modifications. This part supplements or modifies the corresponding provisions in the IEC335-1 publication in order to convert the publication into the IEC standard: Safety Requirements for Commercial Electric Food Processing Machinery.
If individual terms in Part One are not mentioned in Part Two, these terms will still apply as long as they are reasonable. When this first edition is marked as "added", "modified" or "replaced", the relevant requirements, test specifications or instructions in Part One should be modified accordingly. In this publication
1) use the following typography:
— the requirement itself: roman;
— the test specification: italic;
a note: small No. Roman.
2) The added terms or charts for the first part should be numbered starting from 101; the added appendices are marked with letters AA, BB, etc. This standard refers to the following IEC publication:
Publication No. 529 (1989): Degree of Protection Provided by Enclosures (IP Code). 1 Scope
National Standard of the People's Republic of China
Safety of household and similar electrical appliances
Special requirements for commercial electric food processing machinery Safety of household and similar electrical appliancesParticular requirements for commercial electric kitchen machines|| tt||Except for the following content, this chapter in GB4706.1-92 applies. 1.1 This article is replaced by the following:
This standard applies to commercial electric food processing machinery that is not used for general household use. Examples of food processing machinery are as follows:
mixer;
liquid mixer;
food mixer;
dough mixer;
egg beater; || tt||chopping machine;
knife sharpening machine;
meat grinder;
slicing machine;
peeling machine;
can opener ;
coffee grinder;
food washing machine:
dispensing machine;
food processor.
GB4706.38—1997
idt IEC335-2-64:1991
Some appliances are supplied in several components (extensions) for ease of transportation. When assembled at the installation site, It can be assembled into a complete machine without adding any parts. This standard also applies to such appliances. The electrical parts of appliances that utilize other forms of energy are also within the scope of this standard. This standard does not apply to:
Industrial food processing machinery;
Continuous operation food processing machinery for processing large quantities of food; Separate conveying equipment, such as food distribution conveyor belts; Corrosive or explosive materials Appliances used where gases (dust, vapor or gas) are present. Additional requirements may be required for appliances used on vehicles, vessels or aircraft. Approved by the State Bureau of Technical Supervision on 1997-11-25 and implemented on 1998-12-01
GB4706.38—1997
For appliances used in tropical countries, special requirements may be required. Additional requirements set by the health, water supply and labor protection authorities of many countries should be taken into account. 2 Definition
Except for the following content, this chapter in GB4706.1-92 applies. 2.2.4 The following content is added to this article:
The rated input power is the sum of the rated input powers of all individual components in the appliance that can work simultaneously; among several such combinations that may exist, use the maximum input power combination to determine the rated input power. 2.2.30 This article is replaced by the following:
Normal load is a load equivalent to 85% of the maximum load reached under the following conditions, the appliance is operated at no load at rated voltage, and the controller is adjusted by the user Adjust to the highest setting value until a steady state is reached. Then load in appropriate increments, keeping the supply voltage at the original value. Steady state must be reached before increasing load at each step. Repeat step loading until the overload protection device is about to activate or until the stable state reaches the maximum temperature. Electrical or mechanical shifting devices can be used to realize the step of the load. If it is not possible to effectively use a mechanical or electrical shifting device, the normal load may be determined according to the following conditions. For the following appliances, run the appliance without load at rated voltage and normal operating temperature, with the user-adjusted controller adjusted to the highest setting value. The normal load is 115% of the input power measured under these conditions. —Liquid blender;
slicer;
a peeling machine;
coffee grinder;
food washing machine;
a dispensing machine.
The following clauses are added to this chapter:
2.2.101 The liquid level mark refers to the maximum liquid level mark marked on the appliance for correct operation. 3 General requirements
This chapter in GB4706.1-92 applies.
4 General instructions in testing
Except for the following content, this chapter in GB4706.1-92 is applicable. The following clauses are added to this chapter:
4.101 For combined appliances, if the input power of the heating part is increased to 1.15 times the rated input power, the required voltage is higher than the required voltage when the motor voltage is increased to 1.06 times the rated voltage. If the required voltage exceeds 3V, the motor should use a separate power supply. 4.102 Appliances assembled with other appliances or equipped with other appliances shall be tested in accordance with the requirements of this standard. Other appliances should work simultaneously in accordance with the requirements of relevant standards.
4.103 For appliances that use energy sources other than electricity, when testing their electrical components, the influence of the non-electrical components of the appliance must be considered. 5 Ratings
This chapter in GB4706.1-92 is applicable. 6 Category
Except for the following, GB4706.This chapter in 1-92 is applicable: 6.1 This article adds the following content:
Adds the following content to item (2):
GB 4706.38—1997
Anti-spray type appliance (IPX5. According to IEC publication 529). 7 mark
Except for the following content, this chapter in GB4706.1-92 is applicable: 7.1 The following content is added to this article:
The appliance should be added with the following mark:
For appliances connected to the water source, kPa is used to express the water pressure or pressure range, unless it is noted in the instruction manual; if the motor is reversed, it may be dangerous, and when the direction of rotation depends on the power connection method, this should be clearly marked on an obvious part of the motor. turn around.
7.6 Add the following content to this article:
Add the following symbols to the symbol table:
kPa...
IPX5..
Thousands Pa
Anti-spray structure
7.12 The following content is added to this article:
Instructions should be provided with the machine, detailing matters that must be paid special attention to during installation. Operating procedures and user maintenance, such as cleaning, instructions should also be provided. wwW.bzxz.Net
For appliances permanently connected to fixed wiring, the instructions shall provide information on measures to be taken to protect against leakage currents during installation. If the appliance is not constructed to be spray-proof, clear and detailed instructions should be provided to the user along with the appliance. The instructions should indicate that this appliance must not be cleaned with a water spray hose.
Instructions should include warnings about incorrect use of the appliance and the need to be careful when removing and removing the cutting blade for cleaning. Instructions should include operating times and speed settings for optional accessories, unless this information is marked on the appliance. The following clauses are added to this chapter:
7.101 Manual loading or manual switch loading equipment should have material height markings. 8 Protection against electric shock
This chapter in GB4706.1-92 is applicable. 9 Starting of electric appliances
Except for the following content, this chapter in GB4706.1-92 is applicable to 9.2. This article adds the following content:
If the rated current of the appliance or the fuse If the rated current exceeds 25A, a fuse with a marked current rating shall be used for testing.
10 Input power and current
Except for the following content, this chapter in GB4706.1-92 is applicable. 10.1 This article adds the following content:
The total input power of multiple units can be determined by measuring the input power of each unit separately. The rated input power is the sum of the rated input powers of all individual components in the appliance that can be operated simultaneously; when there may be several such combinations, the combination with the largest input power is used to determine the rated input power. 11 Fever
Except for the following content, this chapter in GB4706.1-92 applies. 11.2 The following content is added to this article:
GB4706.38—1997
Appliances fixed to the floor shall be installed in accordance with the manufacturer's instructions. If no instructions are provided, GB4706.1-92 shall apply. 11.10 This article is modified with the following content: Replace Note ① in Table 4 with the following content:
factor \P\ is equal to 8000.
12 This chapter in GB4706.1-92 applies to appliances with electric heating elements operating under overload conditions. 13 Electrical insulation and leakage current at operating temperature Except for the following content, this chapter in GB4706.1-92 is applicable. 13.2 This article is amended with the following content: replace the specified value of leakage current of fixed Class 1 electric appliances with the following content: ·Fixed Class 1 electric appliances without electric heating elements: Fixed Class I connected with soft cords and plugs Electric appliances with electric heating elements...
·Other fixed type electric appliances with electric heating elements. 14 Suppression of radio and television interference
This chapter in GB4706.192 is applicable.
15 Waterproof
Except for the following content, this chapter in GB4706.1-92 is applicable. 15.2 The following content is added to this article:
3.5mA:
1mA/kW maximum limit value is 10mA;
1mA/kW has no maximum limit value.
Drip-proof appliances must also withstand the splash test using the device shown in Figure 10 of GB4706.1-92. Spray-proof appliances are subject to the tests described in IEC Publication No. 529 (IPX5). 15.3 This article is amended with the following content: Replace the requirement with the following content:
The structure of the appliance should be such that spillage of liquid does not affect its electrical insulation during normal use. Replace the paragraph on test specifications for liquid containers with the following: Completely fill the container of the manual water filling device with water, and then pour water equal to 15% of the container capacity, but not more than 10L, into the container evenly within 1 minute.
Appliances that use water switches or automatic control valves to fill water should be connected to a water source with the maximum water supply pressure indicated by the manufacturer. The devices that control the water inlet should be kept fully open. Continue to fill with water for 1 minute after the overflow phenomenon first occurs, or until another time. A protection system activates until water inflow is stopped.
After the container is filled with water, the appliance is allowed to operate at rated voltage for 15 seconds, with the cover or lid in the normal position or removed, whichever is more disadvantageous.
15.4 This article is modified with the following content: replace the prescribed time with the following content:
The time the appliance is placed in the humid room (box) is 24 hours. The following content is added to this article:
If it is impossible to place the entire appliance in a humid room (box), the parts containing electrical components can be tested separately, but the conditions inside the appliance should be considered.
The following clauses are added to this chapter:
GB 4706.381997
15.101 Appliances equipped with water switches for water filling or cleaning shall be designed so that water flowing out of the switch cannot contact live parts. Compliance is checked by the following test: The appliance is connected to a water source having the maximum supply pressure indicated by the manufacturer. Tiltable and removable parts, including covers, are tilted or placed in the most unfavorable position. The rotatable water outlet pipe of the water switch should be pointed at the component that will produce the most unfavorable results. All devices that control the water inlet should be opened for 1 minute. After this treatment, the appliance should immediately undergo the dielectric strength test of Chapter 16. 16 Insulation resistance and electrical strength
Except for the following content, this chapter in GB4706.1-92 is applicable. 16.1 The following content is added to this article:
Appliances with electric heating elements shall withstand the test of Article 16.2. This Article 16.2 is modified with the following content: The provisions for leakage current of fixed Class 1 appliances are replaced by the following content Value·Appliances connected with cords and plugs
.+...+.+..
·Other appliances
17 Overload protection
GB4706.1-92 This chapter in all applies. 18 Durability
Except for the following content, this chapter in GB4706.1-92 is applicable. 18.1 This article adds the following content:
The test is only performed on the electric components of the appliance. 18.2 This article is modified with the following content: The appliance is operated without load, and the test is only performed on the commutator motor. Allow the protective device to operate.
19 Abnormal operation
Except for the following content, this chapter of GB4706.1-92 is applicable. 19.6 The following content is added to this article:
Appliances should be considered to have moving parts that can easily get stuck. 20 Stability and mechanical hazards
Except for the following content, this chapter in GB4706.1-92 is applicable. 20.2 Add the following explanation after the first requirement paragraph: .2mA/kW maximum limit 10mA·
2mA/kW has no maximum limit.
......
If the unenclosed cutting tool guard covers the cutting edge by at least 0.5mm and is no more than 3mm away from the blade during operation, it can be considered to have provided adequate protection.
Add the following content after the second requirement paragraph: Covers used to protect dangerous areas within the working range of the appliance can only be removed after the danger is eliminated by other methods. Components that move no more than 4mm apart from each other are not considered hazardous crushing (crushing) and shearing areas. Traction zones only exist if the movement of uncovered movable parts during operation passes over fixed and/or movable parts. In France, additional requirements regarding mechanical hazards apply. This chapter adds the following clauses:
GB4706.38—1997
20.101 Locking devices that may cause danger when unlocking should be of a type that cannot be opened accidentally. Compliance is determined by testing the standard test finger shown in Figure 1. It shall not be possible to open the locking device with the test finger. 20.102 Functional parts, such as fixtures to which accessories can be attached, must not become accidentally loosened. Output shafts that may constitute a hazard outside the working range should be suitably protected against accidental contact. Compliance is determined by inspection and test finger test. 20.103 Appliances or parts thereof that require tilting during normal use shall not cause any hazard. Compliance is determined by inspection and manual test. For example, the requirements can be met by one of the following methods: - equipped with a switch that must be kept on by hand; - limiting the movement speed to 50mm/s
- protecting the danger zone with appropriate protective shields; allowing movement Components remain securely in their normal position, even in the event of failure. 20.104 The moving roller should be fully protected by safety partitions or non-driven protective rollers and/or baffles in its traction area, unless the moving roller is spring-loaded with a maximum pressure of 50kPa and equipped with an emergency switch device, and The distance between the two rollers should be at least 60mm. Compliance is determined by inspection, measurement and manual test. 20.105 The switch should be placed within easy reach of the operator's hands. The starting switch shall be protected against the risk of accidental starting. Compliance is determined through visual inspection and manual testing. 20.106 The sliding feed table, pressure plate, stop plate and other fixtures should ensure safe operation within the working range. Compliance is determined by inspection, measurement and manual tests. For example, the following clamps can be used to meet the requirements: - A clamping plate that protects the entire working range and is fixed non-detachably to the sliding feed table when the feed table is folded. , the pressing plate falls automatically. The distance between the pressing plate and the tool should not exceed 80cm; a pressing plate that can automatically move up to the tool and is equipped with a baffle on the stop plate, and a finger protection device on the sliding feeding table:
A rear wall with a height equal to the diameter of the cutter (when using a gravity-driven microtome) is mounted on the sliding feed table. 20.107 The upper edge of the mixer container should be at least 120mm above the danger zone. Compliance is determined by inspection, measurement and manual test. For planetary gear trains, it is considered sufficient if access to the hazardous area is protected by covers or similar objects. 20.108 Circular saws shall be equipped with a cover so that the work area can only be opened by the workpiece itself, if necessary, and the work area is automatically covered at the end of the work cycle.
Conformity shall be determined by visual inspection and manual test 20.109 Choppers equipped with belt or disc cutters and whose cutting edges are not closed during movement shall be effectively prevented from contacting the cutting edges during operation. , unless within the workspace.
Compliance is determined by visual inspection and manual testing. 20.110 Food washing machines with rollers with a kinetic energy of more than 200J shall be equipped with a lid that can only be opened when the roller speed does not exceed 60r/min.
Determine compliance through inspection, measurement and manual testing. When the drum is equipped with a non-rigidly connected drive device, and the transmission torque is limited by the weight and load of the drum, it can also meet the requirements. 20.111 The opening of the chopper and meat grinder hopper should comply with the dimensions listed in the following table: a. is the diameter of the opening or the length of the side;
b. is the safe distance to the dangerous point.
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