GB 4706.42-1999 Particular requirements for safety of hot and cold water dispensers for household and similar electrical appliances
Some standard content:
GB 4706.42—1999
This standard is equivalent to IEC335-2-75:1995 "Particular requirements for the safety of household and similar electrical appliances - automatic vending machines". In the preface of IEC335-2-75:1995, there is the following statement: "This standard should be used in conjunction with the latest version of IEC335-1 and its supplements. This standard is based on the third edition of IEC335-1 (1991).
The Chinese national standard that is equivalent to the above-mentioned EC335-1 (third edition) is GB4706.1—1998 "Safety of Household and Similar Electrical Appliances - Part 1: General Requirements", the latest version. Therefore, this standard should be used in conjunction with GB4706.1-1998. At the time of publication of the standard, the versions cited in this standard are all Valid. EC standards are still in the process of development and replacement, and all of its standards will be revised. All parties using the standards should explore the possibility of using the latest version to comply with my country's policy of actively adopting international standards and the principle of equivalent or equivalent adoption of IEC standards. This standard has made corresponding adjustments to the relevant content when equivalently adopting IEC335-2-75, with the following explanations: 1) The name of the standard has been changed from "Particular Requirements for Safety of Vending Machines for Household and Similar Electrical Appliances" to "Particular Requirements for Safety of Hot and Cold Drinking Water Dispensers for Household and Similar Electrical Appliances"; 2) Since most of this type of appliances in my country are currently concentrated in cold Hot water dispenser·Therefore, the contents of the original standard involving vending food and articles have been revised.
3) The scope of examples in the original standard is relatively broad. In order to be consistent with the name of this standard, the examples that are not applicable to the scope of this standard have been adjusted, such as: cigarette vending machines, newspapers, audio and video (audio) tapes or video (audio) CD vending machines, etc.; 4) Since such appliances currently have functions such as tableware disinfection in China, corresponding requirements have been added; 5) Since most vending machines are used in public places (public and commercial places, etc.) abroad, while domestic water dispensers are mainly used in households and similar places, their scope of application has been changed to the scope described in the text of the standard. . This standard was proposed and coordinated by the National Technical Committee for Standardization of Household Electrical Appliances. The main drafting units of this standard are: China Household Electrical Appliance Research Institute, Zhuhai Yongshui Longjialin Drinking Water Dispenser Company, Shanghai Shanggong Drinking Water Dispenser Co., Ltd., Shenzhen New Century Drinking Water Technology Co., Ltd., Wenzhou Huawei Electric Appliance Company, Zhejiang Qidi Group (Shanghai Qidi Electrical Equipment Co., Ltd.), Hangzhou Smart Electric Co., Ltd., and Jinan New Era Electronics Co., Ltd. The main drafters of this standard are Ma Dejun, Liu Zhendong, Guan Jinchun, Jiang Dingshan, Cai Zhengsong, Zhou Qidi, Qian Ruilin, and Jiang Zhen. This standard is entrusted to the National Technical Committee for Standardization of Household Electrical Appliances for interpretation. GB 4706.42--1999
JIEC Foreword
1) IEC (International Electrotechnical Commission) is a world-wide standardization organization composed of all national electrotechnical committees (IEC National Committees). The purpose of IEC is to promote comprehensive cooperation among countries in the field of electrical and electronic standardization. In view of the above purposes and taking into account the needs of other activities, IEC also publishes international standards. The entire formulation work is completed by technical committees. Any IEC National Committee that is particularly interested in this technical issue can participate in the formulation work. According to the agreement reached between the two organizations, IEC and ISO, they have a close cooperative relationship in their work.
2) IEC resolutions or agreements on technical issues are formulated by technical committees in which all national committees that are particularly interested in this issue participate, and as far as possible express international consensus on the issues involved. 3) These resolutions or agreements are in the form of standards, technical reports or rules for international use and are recognized by national committees in this sense.
4) In order to promote international unification, IEC hopes that national committees will adopt the contents of IEC standards as their national standards within the scope permitted by national conditions. Where there are differences between IEC and the corresponding national or regional standards, these should be clearly indicated in the national standards as far as possible. 5) IEC has established a non-marking procedure to indicate its approval, but it does not assume responsibility for claiming that a device complies with a certain standard. This standard was prepared by IEC Technical Committee 61 (Safety of household and similar electrical appliances). This standard constitutes the first edition of IEC335-2-75. This standard is based on the following documents. DIS
61/896/DIS
Voting Report
61/986/RVL
Further information on the voting status of this standard can be found in the voting report in the table above. This standard should be used in conjunction with the latest version of IEC335-1 and its supplements. This standard is based on the third edition (1991) of IEC335-1.
In order to transform the IEC standard "Safety requirements for vending machines", this content supplements and modifies the corresponding clauses of IEC335-1.
If a particular clause in Part I is not mentioned in Part II, then that clause in Part I may reasonably apply. If "addition", "modification" or "replacement" is indicated in this standard, the corresponding contents in the first part shall be modified accordingly. Notes
In this standard:
1 The following print is used:
—text requirements, print:
—test specifications, italics,
—notes, lowercase print.
The boldface words in the text are defined in Chapter 2. When the definitions in the first part involve adjectives, the adjectives and the nouns to which they belong shall also be in boldface. 2 For the sub-items added in the first part, the numbering shall start from 101: the appendix shall be prefixed with AA, BB, etc. In some countries, there are the following differences:
-6.1: For appliances with a rated voltage not exceeding 150V for indoor use, Class 01 appliances are allowed (Japan). 11.7: The number of sales cycles is specified to determine the test time (USA). GB 4706.42--1999
-20.1: The test is different (USA). ——-21: The metal casing is not subjected to the test (USA). ——-22.7 The pressure relief device shall operate before the rated pressure of the container is exceeded (USA). ——-22.7 The test pressure is 5 times the rated pressure (USA). ——-24.102: Self-resetting thermal circuit breakers are permitted if they have been evaluated for reliability. ——-25.7: The use of armored ordinary polyvinyl chloride power cords is permitted (Australia). ——25.7: The use of lighter power cords is permitted (USA). Annex AA: The evaluation of synthetic rubber parts is not servicing (USA). 1 Scope
National Standard of the People's Republic of China
Safety of household and similar electrical appllancesParticular requdrementswww.bzxz.net
for cold and bot type drinking-water appllancesGB This chapter in GB 4706.1-1998 is replaced by the following: GB 4706. 42-1999
eqv IEc 335-2-75: 1995
This standard applies to the safety of water dispensers and similar appliances (hereinafter referred to as "appliances") for preparing or dispensing hot or cold drinking water. For single-phase appliances, the rated voltage shall not exceed 250V; for other appliances, the rated voltage shall not exceed 480V. Note
Examples of appliances covered by the scope of this standard are: 1
Single-phase water dispensers,
Single-phase water dispensers,
Hot and cold water dispensers!
Similar appliances with other auxiliary functions. 2 Other "special requirements" may apply to certain functions, such as: refrigeration (GB4706.13)
filter heating (GB4706.19):
microwave heating (GB4706.21),
tableware disinfection (QB2138.2-1996), etc.
As far as practical, this standard deals with general hazards that arise in appliances, which are encountered by both users and maintenance personnel. Generally, this standard is not designed to take into account appliances that children play with. Note
3 Electrical components of appliances using other sources of ambient light are also within the scope of this standard. 4 Attention must be paid to the following facts:
Additional requirements may be required for appliances intended for use in vehicles, ships or aircraft: Special requirements may be required for appliances intended for use in tropical countries. In many countries, additional requirements are specified for appliances equipped with pressure vessels. The Ministry of Health, Ministry of Labor Protection, Ministry of Water Resources and similar departments in many countries also have additional requirements. 5 This standard does not apply to,
Appliances intended for use in special locations, such as places where corrosive and explosive gases (dust, steam or gas) are present, commercial electric boiling pots (GB4706.35),
Commercial electric hot water boilers and liquid heaters (GB4706.36) Service and entertainment machines (IEC335-2-82); appliances equipped with electrode type heaters.
Approved by the State Administration of Quality and Technical Supervision on 1999-0B-04 and implemented on 2000-07-D1
2 Definitions
GB 4706. 42-1999
This chapter in GB4706.1-1998 is applicable except for the following. 2.2.9 This clause is replaced by the following:
Normal operation
The appliance is operated in a holding state until a steady state is reached, and then in the most unfavorable preparation-water supply state. When necessary, the appliance is recharged in accordance with the operating instructions or maintenance instructions and the next working cycle is started as soon as possible. 2.7.2 This clause is replaced by the following:
detachable part
A part that can be removed or opened without the use of tools, which can be removed in accordance with the manufacturer's operating instructions or maintenance instructions, even if it is necessary to use a tool or an access key to remove it, or a part that does not comply with the test described in 22.11. NOTE: If a part must be removed for installation purposes, it cannot be considered a detachable part, even if the instructions state that it is detachable. 2.8.3 This clause is replaced by the following:
Thermal cut-out
A device that limits the temperature of a controlled component by automatically opening a circuit or reducing the current during abnormal operation and is constructed so that its setting cannot be changed by the user or maintenance personnel. 2.9.9 This clause is replaced by the following:
Maintenance operation maintenance operation Work described in the operating instructions, maintenance instructions, or work marked on the appliance that the user or maintenance personnel are prepared to perform.
1 Maintenance instructions marked on the appliance or provided with or subsequently provided with the appliance are only for use in the user area or maintenance area. 2 For new products or new working methods, maintenance work includes appliance assembly and trial operation. The following clauses are added to this chapter:
2.101 Rated pressure
The pressure specified by the manufacturer for the pressure-bearing component. 2.102 Standby node
The state ready for use according to the manufacturer's instructions, filled with water, ingredients or finished products or until the inlet is automatically closed. 2.103 Access key
A key or other device that is easily accessible to the maintenance area but cannot reach the maintenance area. Note: "Other devices\ include tools or coding work or signals generated by light or electromagnetic sources. 2.104 Override key
Key or other device used to disable the interlocking device. 2.105 Cold and hot type drinking-water appliances Appliances used to prepare or deliver cold and (or) hot water. 2.106 Similar type appliances Appliances mainly used to prepare or deliver hot and cold drinking water, while also providing other auxiliary functions such as heating or cooling food or beverages and disinfecting tableware.
instruction for maintenance
2.107 Maintenance instructions
Instructions explaining how to complete cleaning, refilling, controller adjustment and similar work, 2.108 Maintenance person Person who maintains the appliance according to the maintenance instructions. 2.109 User area user area
GB 4706. 42—1999
Area that can be reached without the use of an entry key or tool. 2.110 Maintenance area maintenancearea Area that can be reached only by using an entry key. 2.111 Service area
Area that cannot be reached using the entry key alone. 3 General requirements
This chapter in GB 4706.1—1998 is applicable. 4 General conditions for testing
This chapter in GB4706.1—1998 is applicable except for the following. 4.3 This clause adds the following content,
In the test of Chapter 8, whether compliance with 22.101 is determined. requirements. 4.6 This clause is replaced by the following:
The controllers and switchgear in the user area shall be adjusted to the most unfavorable setting value, and the controllers, switchgear or other components in the maintenance area shall be adjusted to the most unfavorable point within the limits specified in the maintenance instructions. Note: The controllers or switchgear in the maintenance area are not adjusted. 4.9 This clause is added with the following:
When the appliance manufacturer can provide optional software, the appliance shall be tested when the software can give the most unfavorable results. 4.10 This clause is added with the following:
Note: Accessible chains and override lithium batteries can be installed in the appliance. The appliance is provided separately. Before testing, the appliance shall be installed in accordance with the instructions for use accompanying it. If the instructions for use specify that the appliance can be installed together with other appliances, the effects of this combination shall be considered. The following clause is added to this chapter:
4.101 Appliances intended for connection to a water supply shall be supplied with water at a temperature of 15°C ± 5°C and a water pressure of the most unfavorable pressure specified in the installation instructions. For appliances with manual water supply, the water temperature shall be 15°C ± 5°C. For appliances with cooling water, the water temperature shall be 25°C ± 5°C. 4.102 When maintenance instructions are provided, the requirements of this standard for maintenance areas apply. If an override key is provided for contact with the maintenance area and can give less favorable results, the override key shall be used before testing. 4.103 When the test finger is used with reference to Figure 101, the small test finger of Figure 101 can also be used in the user area. 451.6
Extension part
Material: Jinzhou
Size: mm
Dimension tolerance: ±0.125mm
The two joints should be allowed to rotate 90\ in the same plane and in the same direction and have a tolerance of 0″～10\ Figure 101 Small test finger
Location point
Sphere radius = 4.3
6 Classification
GB 4706.42—1999
This chapter in GB4706.1—1998 is applicable except for the following. 6.1 This clause is replaced by the following:
The protection against electric shock of the appliance shall be classified as one of the following: Class I, Class I or Class I.
Compliance is determined by visual inspection and appropriate tests. 6.2 This clause is supplemented with the following:
An appliance designed for outdoor use shall be at least IPX4 type. When the appliance may be cleaned by water spray or is installed in a place where water spray can be easily used, the appliance shall be It should be at least IPX5. 7 Marking and instructions
This chapter in GB4706.1-1998 is applicable except for the following contents. 7.1 This clause adds the following contents:
-Rated water pressure (MPa), if applicable;
The maximum static water pressure (MPa) for appliances designed to be connected to a water source. For appliances that are manually filled, there should be a device to indicate the correct working water level. Note: Water level marks or sound and visual signals can also be used as an appropriate marking method. For appliances with sockets, the voltage and power supply should be marked near the socket. The following shall be added to this clause:
This requirement also applies when adjustments must be made by maintenance personnel. 7.12.1This clause shall be replaced with the following:
If special measures are necessary for installation or maintenance work, detailed information shall be provided. The maintenance instructions shall indicate how to access the maintenance area. This information shall not include how to access the maintenance area. If applicable, the maintenance instructions shall include rust removal, cleaning and related matters such as rinsing and removing any residual cleaning agents from the equipment, disinfection, etc.
For appliances equipped with appliance sockets and designed to be partially or completely immersed in water for cleaning, the maintenance instructions shall state that the connectors must be removed before the appliance is cleaned and that the appliance sockets must be dried before the appliance is used again. If an override key is used that allows access to moving parts, appropriate warnings should be given in the maintenance instructions. For appliances connected to a water supply, the installation instructions shall specify the method of connection and refer to applicable national regulations. Compliance is checked by inspection.
The following clause is added to this clause:
7.12.101 The maintenance instructions shall list all accessories that may be used with the appliance. Compliance shall be checked by inspection.
7.12.102 For appliances using water, the maintenance instructions shall state how to prevent ice jams or how to ensure safe operation in the presence of ice jams.
Compliance shall be checked by inspection.
7.12.103 The maintenance instructions shall specify the maximum and minimum ambient temperatures for correct operation. Compliance shall be checked by inspection.
712.1 The installation instructions shall state whether the appliance is suitable for outdoor use. For appliances not rated IPX5, the instructions shall state that the appliance is not suitable for use in locations where water may splash. GB 4706. 42--1999
If the appliance does not meet IPX5, the maintenance instructions shall state that the appliance must not be cleaned with splashing water. Compliance shall be checked by inspection.
7.12.105 For appliances containing compressed gas, the maintenance instructions shall state the safe handling of the pressure vessel and the gas. Compliance shall be determined by visual inspection.
7.12.106 The installation instructions shall indicate the maximum inclination of the appliance for safe operation. Note: An inclination less than 2\ does not need to be stated. The content in the instructions that "the appliance must be used in a horizontal position\" is sufficient to meet the requirements. 8 Protection against contact with live parts
This chapter in GB4706.1-1998 is applicable. 9 Starting of electric appliances
GB 4706.1-1998 This chapter is not applicable. 10 Power and current
This chapter in GB4706.1-1998 is applicable. 11 Heat
This chapter in GB4706.1-1998 is applicable except for the following content. 11.2 This article modifies the following content: Instead of the installation requirements of the appliance, the following content applies. The installation of embedded appliances shall be carried out in accordance with the provisions of the installation instructions. Other appliances are placed in the test corner. According to the installation instructions, free space should be left above the appliances. Question: For appliances that are usually fixed to the wall, the appliances should be fixed to a wall and as close as possible to other walls and the ground or ceiling that may be approached during normal use. ; - For appliances that are normally fixed to the floor or appliances with a mass greater than 40 kg and without pulleys or rollers, the installation shall be carried out in accordance with the installation instructions:
Note: If instructions are not given, the appliance shall be placed on the floor as close to the wall as possible. An appliance shall be placed on the floor as close to the wall as possible. 11.7 This clause is replaced by the following:
The appliance is operated under normal operating conditions until a steady state is reached and the appliance is recharged if necessary. Note: Recharging may require the use of accessible keys. 11.8 This clause is supplemented with the following:
The temperature rise of the surface in the user area shall not exceed that of handles, buttons, grips and similar parts that are only held for a short time. Temperature rise of the components. Note: This requirement does not apply to the surface of components that must be heated to achieve the function of the appliance. The following clause is added to this chapter:
11.101 For appliances equipped with refrigeration equipment and with motor-compressors that do not comply with GB4706.17, repeat the test at an ambient temperature of 32°C (43°C for tropical countries). The non-refrigeration parts are to operate in standby mode or the refrigeration system is to operate under the most unfavorable conditions.
The temperature rise of appliance components other than the motor-compressor is not measured. The winding temperature and casing temperature of motor-compressors made of the following materials shall not exceed: Synthetic insulation 140°C
Fiber insulation 13 0℃
Motor-compressor housing 150℃
12 Blank
13 Leakage current and electrical strength at operating temperature This clause of GB4706.1-1998 is applicable. 14 Blank
15 Moisture leakage resistance
GB4706.42-1999
This clause of GB4706.1-1998 is applicable except as follows. 15.2 This clause is replaced by the following:
Appliances subjected to liquid splashing in normal use shall be constructed so that splashing will not affect their electrical insulation. The electrical insulation shall also not be affected by cleaning, disinfection, rust removal and similar operations. Compliance is checked by the tests of 15.2.1 to 15.2.10. The test water shall contain approximately 1% NaCl. Appliances with type X connections, except those with specially prepared conductors, shall be fitted with the lightest type of flexible cord having the smallest cross-sectional area specified in Table 1.
Appliances fitted with appliance inlets are tested with or without the corresponding connector in place, whichever is the more unfavourable. Before each test, the appliance is operated in the standby mode unless otherwise specified. Appliances connected to a water supply are prefilled with water. After each overflow or use of liquid, the appliance is subjected to the test of 16.3 and visual inspection shall show that there are no traces of liquid or solid matter on the insulation which could reduce creepage distances and electrical spacings below the values specified in clause 29. All residues are then removed and the appliance dried. 15.2.1 Manually filled containers for liquids are filled with water and 15 % of the total capacity of each container or 0.25 l of water, whichever is the greater, is poured evenly into each container over a period of at least 1 min. NOTE If a container has more than one independent outlet, they shall be blocked in sequence. 15.2.2 The outlet of the liquid mixing container is blocked and the container is filled with water. 15% of the total capacity of each container or 0.25 L of water, whichever is greater, is poured evenly into the container over a period of at least 15 minutes. Note: If the container has more than one independent outlet, it should be blocked accordingly. 15.2.3 The residual liquid discharge outlet of the container is blocked and 15% of the total capacity of each container or 0.25 L of water, whichever is greater, is poured evenly into the container over a period of at least 15 minutes. Note
1 If the container has more than one independent drain outlet, they should be blocked in sequence. 2 If there is more than one container, they should be tested in sequence. 15.2.4 The taps of the containers in maintenance operation are adjusted in sequence to the unfavorable position. The appliance is powered at rated voltage and operated under normal conditions until water steadily emerges. 15.2.5 The water supply control device is opened to simulate the failure of the water level control system. After the first overflow, the water is allowed to continue to flow for 1 min until the water supply stops automatically.
Note: Only one device failure is tested at a time. 15.2.6 Delivery of liquid to an appliance such as a cup or jug is tested by pouring 0.5 L of liquid evenly on the surface where the user fills, hands over and takes away.
15.2.7 If the appliance has an external surface for placing a container such as a cup or jug, the test is conducted by pouring 0.5 L of water on the surface.
1 The test is conducted even if the appliance does not deliver liquid. 2 If there is more than one surface, the tests are conducted sequentially. GB 4706. 42—1999
15.2.8 If the maintenance instructions refer to the use of liquids, the above test is conducted three times. 15.2.9 Parts that may be cleaned are cleaned with a sponge of approximately 150 mm × 75 mm × 50 mm. Do not use force when using the sponge, just gently rub 10 B on each side. Note: This test is not applicable to the maintenance area indicated in the cleaning instructions. 15.2.10 Appliances subjected to rust removal shall be rust-removed 10 times in accordance with the maintenance instructions. The appliance shall then be operated in standby mode. 15.3 This clause is supplemented with the following:
Note: If it is not possible to place the appliance in a rust box, the electrical components shall be tested separately, taking into account the conditions in which the electrical components are exposed in the appliance. 16 Leakage current and electrical strength
This chapter in GB 4706.1-1998 shall apply. 17 Overload protection of transformers and associated circuits This chapter in GB 4706.1-1998 shall apply. 18 Durability
This chapter in GB 4706. 1-1998 shall not apply Abnormal operation
This chapter in GB4706.1-1998 shall apply except for the following. 19.1 The following is added to this clause:
The appliance is also subjected to the tests of 19.101 and 19.102. Removable parts in the user area are placed in the most unfavorable position or removed. Removable parts in the maintenance area are placed in accordance with the maintenance instructions. If no instructions are given, the parts are placed in the most unfavorable position or removed.
The container is filled to the most unfavorable level.
19.2 The following is added to this clause:
Note: Examples of practical limitations on heat dissipation are:
Working without water;
—disconnecting the fan,
—covering the vents.
19.4 The following is added to this clause:
Note: If the controller can also perform other functions, only the temperature control components are placed in a non-operating state. 19.6 This clause is replaced by the following:
The PTC heating element shall be powered at the working voltage until the power supply and temperature reach a steady state. Apply voltage to the PTC heating element and then increase the working voltage by 5% until a steady state is reached again. Repeat the test until 1.5 times the PTC working voltage is reached or until the heating element ruptures, whichever occurs first. Note: It must be noted that other parts of the appliance are not damaged by the voltage applied during the test. The voltage applied to the PTC may be provided by a separate power supply.
19.7 This clause is added with the following:
For the motor under test, the appliance shall be operated with the most unfavorable water supply-water cycle. 19.11.2 This clause is modified by the following: Replace the test time with the following:
Simulate failure conditions until a steady state is reached. 19.13 This clause is added with the following:
During the test, molten plastic shall not emerge. GB 4706. 42—1999
Liquids and vapors with a temperature exceeding 80°C shall not come out from unexpected places in a way that could harm people. After the test, compliance with 15.1 and 15.2 shall not be affected. Note: After each test, if it is expected that the electrical insulation will be affected, an electrical strength test may be performed. The following clauses are added to this chapter:
19.101 The appliance is powered at rated voltage and operates under abnormal working conditions. Any operation or influence that may occur during normal use shall be applied.
1 After each test, damaged components or parts may be replaced. 2 Examples of failure conditions are:
Defects in the appliance:
· The programmer stops in a certain position,
, disconnecting or reconnecting one or more phases of the power supply at any stage of the program · Open or short circuit of the components
· The main contacts of the connector that connects and disconnects the heating element in normal use are locked in the "on" position unless the appliance is equipped with at least two sets of contacts that are connected. The above requirements can be accommodated by providing two sets of contacts that work independently of each other or providing two independent main contact sets with two independent rotor drives,
· Failure of the wide
· Failure of pneumatic or hydraulic controllers
Errors in user operation:
· Inadvertent activation of buttons, handles, switches or push switches, interrupting the preparation-water supply work with available equipment! - Incorrect opening and closing of doors or covers;
Misuse of maintenance instructions:
· Improper routine cleaning maintenance, the sponge test of 15.2.11 is applied to all surfaces in the user area and the storage area, unless instructions for cleaning are given in the cleaning instructions.
· Setting the controller, switch or program controller to the most unfavorable position;
· Improper bagging,
· Improper coin collection!
· Incorrect opening and closing of doors or covers!
· Incorrect activation of buttons, handles, lifting or pushing switches; - Misuse by users:
· Blocking the water supply hole,
· If the addition of moving parts can cause danger, block the moving parts, 3 Generally speaking, the test should be limited to failure conditions that can give a certain amount of unfavorable results, 4 If the waterless operation of the appliance can be considered as a more serious working condition, the test should be carried out with the water source turned off. However, the water source is not turned off during the water supply operation.
2 Appliances with accessible openings shall be tested by pouring 0.25 l of an aqueous solution containing approximately 1% NaCl into each opening. If the opening is in a vertical plane, the appliance shall be tipped towards the opening. NOTE For accessible openings, including coin or credit card guides, 20 Stability and mechanical hazards
This clause in GB 4706.1—1998 applies except as follows. 20.1 The following is added to this clause:
The test is carried out with doors, covers and similar parts in maintenance areas in their normal position. The test is carried out with doors, covers and similar parts in maintenance areas in the most unfavourable position, the appliance being tilted through an angle of 5°. The appliance is not tested with a tilt of 15°.
20.2 The following is added to this clause:
GB 4706.42—1999
The covers of moving parts exceeding 4J of kinetic energy shall be interlocked. The cover can only be removed when the moving parts are stationary or can only be removed with the aid of tools.
21 Mechanical strength
This chapter in GB4706.1-1998 is applicable except for the following content: This chapter adds the following content:
Apply an impact energy of 0.5" in the maintenance area. In the user area, the impact energy shall be increased to 1.0J±0.05J. 22 Structure
GB 4706. 1—1998 This chapter is applicable except for the following. 22.6 This clause is added with the following content:
Note: Parts subjected to the aging test in Appendix AA cannot be considered as parts that may leak. 22.7 This clause is added with the following content:
Appliances equipped with compression systems are subjected to the following test: All parts that limit the pressure, except the pressure relief device, are in a certain non-operating state and water is added to the system. The pressure is then slowly increased until the pressure relief device operates or until a steady state is reached. The pressure should not exceed 1.2 times the rated pressure and the appliance should be suitable for its purpose. The pressure relief device is then in a certain type of non-operating state. The appliance is placed in the inoperative state and the pressure is increased again until it reaches twice the rated pressure. The pressure is maintained at this value for 5 minutes. The system should not rupture and there should be no permanent deformation. After the pressure reaches 1.5 times the rated pressure, the vulnerable parts may rupture. In this case, the vulnerable parts should be replaced and the test repeated. The rupture should occur in the same way. The appliance should then be subjected to the electrical strength test of Clause 16.3. 1 If the fluid cannot circulate freely through the pressure system, separate tests may be carried out on separate parts of the system. 2 If there is more than one pressure relief panel on the same part of the system, they should be placed in the inoperative state together. 3 If the pressure relief device in the maintenance area can be adjusted, it should be set to the most unfavorable position. The sealed pressure relief capacity is not adjusted. 4 This test is not performed on refrigeration systems.
22.14 Add the following content to this clause:
This requirement also applies to parts in the maintenance area that are easily accessible during maintenance operations. 22.33 Add the following content to this clause:
Ingredients and products that are or can become accessible in normal use should not come into direct contact with live parts or with the basic insulation of Class 1 structures.
Add the following clause to this chapter:
22.101 If The interlocking device must comply with the standard. The construction of the appliance shall be such that it is not possible to put the interlocking device in the inoperative state without using the override key.
Compliance is checked by inspection, by manual test and by applying the test finger of Figure 1. 22.102 Access to the service area is not possible in the maintenance area by using only the access key. Compliance is checked by inspection and by manual test. 22.103 Unintended release of liquid, vapour or gas from the appliance shall not result in a hazard. Compliance is checked by inspection and the test of 22.7. 22.104 The delivered product shall not be contaminated by, for example, lubricating oil and corrosive substances. Compliance is checked by inspection.101 The appliance is supplied at rated voltage and operated under abnormal operating conditions. Any operation or influence that may occur during normal use is to be applied.
1 After each test, damaged components or parts may be replaced. 2 Examples of failure conditions are:
Defects in the appliance:
·The programmer stops in a certain position,
, disconnecting or reconnecting one or more phases of the power supply at any stage of the program ·Open or short-circuited components
·Unless the appliance is equipped with at least two sets of contacts that are connected, the main contacts of the connector that connects and disconnects the heating element in normal use are locked in the "on" position. The above requirements can be met by providing two sets of contacts that work independently or providing two independent main contact sets with two independent rotor drives.
· Failure of the wide
· Failure of pneumatic or hydraulic controllers
Error in user operation:
· Incorrect activation of buttons, handles, switches or push switches, interrupting the preparation of available equipment - water supply! - Incorrect opening and closing of doors or covers;
Improper use of maintenance instructions:
· Improper routine cleaning maintenance, the sponge test of 15.2.11 is applied to all surfaces in the user area and the stacking area, unless instructions for cleaning are given in the cleaning instructions.
· Setting controllers, switches or program controllers in the most unfavorable position;
· Incorrect coin collection!
· Incorrect opening and closing of doors or covers!
· Inadvertent activation of a button, handle, lift or push switch; - Inadvertent use by the user:
· Blocking the water supply hole,
· If the increase of moving parts can cause danger, block the moving parts. 3 Generally speaking, the test is limited to failure conditions that can give adverse results. 4 If the operation of the appliance without water can be considered as a more serious working condition, the test is carried out with the water supply turned off. However, the water supply is not turned off during the water supply operation.
2 Appliances with easily accessible openings should be tested by injecting 0.25L of an aqueous solution containing approximately 1% NaCl into each opening. 19.102
If the opening is on a vertical surface, it should be poured towards the opening. Note: For easily accessible openings including coin or credit card guides, 20 Stability and mechanical hazards
This chapter in GB4706.1-1998 is applicable except for the following content. 20.1 The following content is added to this clause:
The test is to be carried out with doors, covers and similar parts in the maintenance area in the normal position. The test is to be carried out with doors, covers and similar parts in the maintenance area in the most unfavorable position, and the appliance is to be tilted at an angle of 5\. The appliance is not to be tested with a tilt of 15\.
20.2 The following content is added to this clause:
GB 4706.42—1999
The covers of moving parts with a kinetic energy exceeding 4J shall be interlocked. The covers can only be removed when the moving parts are stationary or can only be removed with the aid of tools.
21 Mechanical Strength
This chapter in GB4706.1-1998 is applicable except for the following contents: This chapter adds the following contents:
Apply 0.5J impact energy in the maintenance area. In the user area, the impact energy shall be increased to 1.0J±0.05J. 22 Structure
GB 4706.1—1998 This chapter is applicable except for the following. 22.6 This clause is added with the following content:
Note: Parts subjected to the aging test in Appendix AA cannot be considered as parts that may leak. 22.7 This clause is added with the following content:
Appliances equipped with compression systems are subjected to the following test: All parts that limit the pressure, except the pressure relief device, are in a certain non-operating state and water is added to the system. The pressure is then slowly increased until the pressure relief device operates or until a steady state is reached. The pressure should not exceed 1.2 times the rated pressure and the appliance should be suitable for its purpose. The pressure relief device is then in a certain type of non-operating state. The appliance is placed in the inoperative state and the pressure is increased again until it reaches twice the rated pressure. The pressure is maintained at this value for 5 minutes. The system should not rupture and there should be no permanent deformation. After the pressure reaches 1.5 times the rated pressure, the vulnerable parts may rupture. In this case, the vulnerable parts should be replaced and the test repeated. The rupture should occur in the same way. The appliance should then be subjected to the electrical strength test of Clause 16.3. 1 If the fluid cannot circulate freely through the pressure system, separate tests may be carried out on separate parts of the system. 2 If there is more than one pressure relief panel on the same part of the system, they should be placed in the inoperative state together. 3 If the pressure relief device in the maintenance area can be adjusted, it should be set to the most unfavorable position. The sealed pressure relief capacity is not adjusted. 4 This test is not performed on refrigeration systems.
22.14 Add the following content to this clause:
This requirement also applies to parts in the maintenance area that are easily accessible during maintenance operations. 22.33 Add the following content to this clause:
Ingredients and products that are or can become accessible in normal use should not come into direct contact with live parts or with the basic insulation of Class 1 structures.
Add the following clause to this chapter:
22.101 If The interlocking device must comply with the standard. The construction of the appliance shall be such that it is not possible to put the interlocking device in the inoperative state without using the override key.
Compliance is checked by inspection, by manual test and by applying the test finger of Figure 1. 22.102 Access to the service area is not possible in the maintenance area by using only the access key. Compliance is checked by inspection and by manual test. 22.103 Unintended release of liquid, vapour or gas from the appliance shall not result in a hazard. Compliance is checked by inspection and the test of 22.7. 22.104 The delivered product shall not be contaminated by, for example, lubricating oil and corrosive substances. Compliance is checked by inspection.101 The appliance is supplied at rated voltage and operated under abnormal operating conditions. Any operation or influence that may occur during normal use is to be applied.
1 After each test, damaged components or parts may be replaced. 2 Examples of failure conditions are:
Defects in the appliance:
·The programmer stops in a certain position,
, disconnecting or reconnecting one or more phases of the power supply at any stage of the program ·Open or short-circuited components
·Unless the appliance is equipped with at least two sets of contacts that are connected, the main contacts of the connector that connects and disconnects the heating element in normal use are locked in the "on" position. The above requirements can be met by providing two sets of contacts that work independently or by providing two independent main contact sets with two independent rotor drives.
· Failure of the wide
· Failure of the pneumatic or hydraulic controller
Error in user operation:
· Incorrect activation of buttons, handles, switches or push switches, interrupting the preparation of available equipment - water supply! - Incorrect opening and closing of doors or covers;
Improper use of maintenance instructions:
· Improper routine cleaning maintenance, the sponge test of 15.2.11 is applied to all surfaces in the user area and the stacking area, unless instructions for cleaning are given in the cleaning instructions.
· Setting the controller, switch or program controller to the most unfavorable position;
· Incorrect coin collection!
· Incorrect opening and closing of doors or covers!
· Inadvertent activation of a button, handle, lift or push switch; - Misuse by the user:
· Blocking the water supply hole,
· If the increase of moving parts can cause danger, block the moving parts. 3 Generally speaking, the test is limited to failure conditions that can give adverse results. 4 If the operation of the appliance without water can be considered as a more serious working condition, the test is carried out with the water supply turned off. However, the water supply is not turned off during the water supply operation.
2 Appliances with easily accessible openings should be tested by injecting 0.25L of an aqueous solution containing approximately 1% NaCl into each opening. 19.102
If the opening is on a vertical surface, it should be poured towards the opening. Note: For easily accessible openings including coin or credit card guides, 20 Stability and mechanical hazards
This chapter in GB4706.1-1998 is applicable except for the following content. 20.1 The following content is added to this clause:
The test is to be carried out with doors, covers and similar parts in the maintenance area in the normal position. The test is to be carried out with doors, covers and similar parts in the maintenance area in the most unfavorable position, and the appliance is to be tilted at an angle of 5\. The appliance is not to be tested with a tilt of 15\.
20.2 The following content is added to this clause:
GB 4706.42—1999
The covers of moving parts with a kinetic energy exceeding 4J shall be interlocked. The covers can only be removed when the moving parts are stationary or can only be removed with the aid of tools.
21 Mechanical Strength
This chapter in GB4706.1-1998 is applicable except for the following contents: This chapter adds the following contents:
Apply 0.5J impact energy in the maintenance area. In the user area, the impact energy shall be increased to 1.0J±0.05J. 22 Structure
GB 4706.1—1998 This chapter is applicable except for the following. 22.6 This clause is added with the following content:
Note: Parts subjected to the aging test in Appendix AA cannot be considered as parts that may leak. 22.7 This clause is added with the following content:
Appliances equipped with compression systems are subjected to the following test: All parts that limit the pressure, except the pressure relief device, are in a certain non-operating state and water is added to the system. The pressure is then slowly increased until the pressure relief device operates or until a steady state is reached. The pressure should not exceed 1.2 times the rated pressure and the appliance should be suitable for its purpose. The pressure relief device is then in a certain type of non-operating state. The appliance is placed in the inoperative state and the pressure is increased again until it reaches twice the rated pressure. The pressure is maintained at this value for 5 minutes. The system should not rupture and there should be no permanent deformation. After the pressure reaches 1.5 times the rated pressure, the vulnerable parts may rupture. In this case, the vulnerable parts should be replaced and the test repeated. The rupture should occur in the same way. The appliance should then be subjected to the electrical strength test of Clause 16.3. 1 If the fluid cannot circulate freely through the pressure system, separate tests may be carried out on separate parts of the system. 2 If there is more than one pressure relief panel on the same part of the system, they should be placed in the inoperative state together. 3 If the pressure relief device in the maintenance area can be adjusted, it should be set to the most unfavorable position. The sealed pressure relief capacity is not adjusted. 4 This test is not performed on refrigeration systems.
22.14 Add the following content to this clause:
This requirement also applies to parts in the maintenance area that are easily accessible during maintenance operations. 22.33 Add the following content to this clause:
Ingredients and products that are or can become accessible in normal use should not come into direct contact with live parts or with the basic insulation of Class 1 structures.
Add the following clause to this chapter:
22.101 If The interlocking device must comply with the standard. The construction of the appliance shall be such that it is not possible to put the interlocking device in the inoperative state without using the override key.
Compliance is checked by inspection, by manual test and by applying the test finger of Figure 1. 22.102 Access to the service area is not possible in the maintenance area by using only the access key. Compliance is checked by inspection and by manual test. 22.103 Unintended release of liquid, vapour or gas from the appliance shall not result in a hazard. Compliance is checked by inspection and the test of 22.7. 22.104 The delivered product shall not be contaminated by, for example, lubricating oil and corrosive substances. Compliance is checked by inspection.This chapter in GB 4706.1-1998 is applicable except for the following contents: This chapter adds the following contents:
Apply an impact energy of 0.5J in the maintenance area. In the user area, the impact energy shall be increased to 1.0J±0.05J. 22 Structure
This chapter in GB 4706.1-1998 is applicable except for the following contents. 22.6 This clause adds the following contents:
Note: Parts subjected to the aging test in Appendix AA cannot be considered as parts that may leak. 22.7 This clause adds the following contents:
Appliances equipped with compression systems are subjected to the following test: All parts that limit the pressure, except the pressure relief device, are in a certain type of non-operating state and water is added to the system. Then, the pressure is slowly increased until the pressure relief device operates or until a steady state is reached. The pressure should not exceed 1.2 times the rated pressure and the appliance should be suitable for its purpose. Then, the pressure relief device is in a certain type of non-operating state. The appliance is placed in the inoperative state and the pressure is increased again until it reaches twice the rated pressure. The pressure is maintained at this value for 5 minutes. The system should not rupture and there should be no permanent deformation. After the pressure reaches 1.5 times the rated pressure, the vulnerable parts may rupture. In this case, the vulnerable parts should be replaced and the test repeated. The rupture should occur in the same way. The appliance should then be subjected to the electrical strength test of Clause 16.3. 1 If the fluid cannot circulate freely through the pressure system, separate tests may be carried out on separate parts of the system. 2 If there is more than one pressure relief panel on the same part of the system, they should be placed in the inoperative state together. 3 If the pressure relief device in the maintenance area can be adjusted, it should be set to the most unfavorable position. The sealed pressure relief capacity is not adjusted. 4 This test is not performed on refrigeration systems.
22.14 Add the following content to this clause:
This requirement also applies to parts in the maintenance area that are easily accessible during maintenance operations. 22.33 Add the following content to this clause:
Ingredients and products that are or can become accessible in normal use should not come into direct contact with live parts or with the basic insulation of Class 1 structures.
Add the following clause to this chapter:
22.101 If The interlocking device must comply with the standard. The construction of the appliance shall be such that it is not possible to put the interlocking device in the inoperative state without using the override key.
Compliance is checked by inspection, by manual test and by applying the test finger of Figure 1. 22.102 Access to the service area is not possible in the maintenance area by using only the access key. Compliance is checked by inspection and by manual test. 22.103 Unintended release of liquid, vapour or gas from the appliance shall not result in a hazard. Compliance is checked by inspection and the test of 22.7. 22.104 The delivered product shall not be contaminated by, for example, lubricating oil and corrosive substances. Compliance is checked by inspection.This chapter in GB 4706.1-1998 is applicable except for the following contents: This chapter adds the following contents:
Apply an impact energy of 0.5J in the maintenance area. In the user area, the impact energy shall be increased to 1.0J±0.05J. 22 Structure
This chapter in GB 4706.1-1998 is applicable except for the following contents. 22.6 This clause adds the following contents:
Note: Parts subjected to the aging test in Appendix AA cannot be considered as parts that may leak. 22.7 This clause adds the following contents:
Appliances equipped with compression systems are subjected to the following test: All parts that limit the pressure, except the pressure relief device, are in a certain type of non-operating state and water is added to the system. Then, the pressure is slowly increased until the pressure relief device operates or until a steady state is reached. The pressure should not exceed 1.2 times the rated pressure and the appliance should be suitable for its purpose. Then, the pressure relief device is in a certain type of non-operating state. The appliance is placed in the inoperative state and the pressure is increased again until it reaches twice the rated pressure. The pressure is maintained at this value for 5 minutes. The system should not rupture and there should be no permanent deformation. After the pressure reaches 1.5 times the rated pressure, the vulnerable parts may rupture. In this case, the vulnerable parts should be replaced and the test repeated. The rupture should occur in the same way. The appliance should then be subjected to the electrical strength test of Clause 16.3. 1 If the fluid cannot circulate freely through the pressure system, separate tests may be carried out on separate parts of the system. 2 If there is more than one pressure relief panel on the same part of the system, they should be placed in the inoperative state together. 3 If the pressure relief device in the maintenance area can be adjusted, it should be set to the most unfavorable position. The sealed pressure relief capacity is not adjusted. 4 This test is not performed on refrigeration systems.
22.14 Add the following content to this clause:
This requirement also applies to parts in the maintenance area that are easily accessible during maintenance operations. 22.33 Add the following content to this clause:
Ingredients and products that are or can become accessible in normal use should not come into direct contact with live parts or with the basic insulation of Class 1 structures.
Add the following clause to this chapter:
22.101 If The interlocking device must comply with the standard. The construction of the appliance shall be such that it is not possible to put the interlocking device in the inoperative state without using the override key.
Compliance is checked by inspection, by manual test and by applying the test finger of Figure 1. 22.102 Access to the service area is not possible in the maintenance area by using only the access key. Compliance is checked by inspection and by manual test. 22.103 Unintended release of liquid, vapour or gas from the appliance shall not result in a hazard. Compliance is checked by inspection and the test of 22.7. 22.104 The delivered product shall not be contaminated by, for example, lubricating oil and corrosive substances. Compliance is checked by inspection.
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