GB 4706.50-2001 Safety of household and similar electrical appliances Particular requirements for commercial electric dishwashers
Some standard content:
GB4706.50—2001
All technical contents of this standard are mandatory. This standard is equivalent to the second edition of EC60335-2-58 Safety of household and similar electrical appliances Part 2: Particular requirements for commercial electric washing machines 3 (1995) and its amendment No. 1 (1998). This standard should be used in conjunction with GB4706.1-1998 Safety of household and similar electrical appliances Part 1: General requirements. The part marked with "applicable" in this standard indicates that the corresponding provisions in GB 4706.1-1998 are applicable to this standard; the part marked with "replace" or "amendment" in this standard shall be subject to the provisions in this standard; the part marked with "addition" in this standard indicates that in addition to complying with the corresponding provisions of GB 4706.1-1998, it shall also comply with the provisions added in this standard. Appendix A, Appendix AA and Appendix B in this standard are all appendices to the standard. This standard was proposed by the China General Chamber of Commerce. This standard is under the jurisdiction of the Commercial Electrical Food Processing Service Equipment Subcommittee of the National Technical Committee for Standardization of Household Appliances. The drafting unit of this standard is the National Food Service Machinery Quality Supervision and Inspection Center. The main drafters of this standard are Zhang Chengbin, Zhang Chunsheng, Xia Xiaoli, Zhan Yulan and Liu Hongwei. GB 4706.50—2001
IEC Foreword
1) The International Electrotechnical Commission (IEC) is a global standardization organization composed of the electrotechnical committees of member countries (IEC National Committees). The mission of IEC is to promote international cooperation on all issues related to standardization in the electrical and electronic fields. To this end, EC, in addition to other activities, also publishes international standards. The formulation of these standards is entrusted to technical committees. Any IEC National Committee interested in the issues involved may participate in this work. International organizations, government agencies and non-governmental organizations that have ties with IEC may also participate. IEC and the International Organization for Standardization (ISO) work closely under the terms of the agreement between the two organizations. 2) The formal decision-making agreement on technical issues drawn up by the technical committees in which all the national committees with special interest participate expresses as nearly as possible the international consensus on the issues involved. 3) The standards, technical reports or manuals they propose are accepted by the national committees in the form of recommendations for international use.
4) In order to promote international unification, the EC national committees agree to apply IEC international standards to national and regional standards as clearly as possible. Any inconsistency between IEC international standards and corresponding national and regional standards should be clearly stated in the national and regional standards.
5) E does not provide labeling and does not assume any responsibility for any equipment claiming to conform to one of its standards. This part of the IEC 60335 international standard was prepared by Subcommittee 61E "Safety of commercial electrical food processing and serving equipment" of IEC Technical Committee 61\Safety of household and similar electrical appliances. It constitutes the second edition of IEC 60335-2-58, replacing the first edition issued in 1990. The text of this standard is based on the following documents: DIS
61E/126/DIS
Report of approval
61E/143/RVL
Details of the approval of this standard may be found in the report of approval indicated in the table above. This Part 2 is intended for use with the latest edition of IEC 60335-1 and its amendments and is based on the third edition (1991) of that standard and its amendment No. 1 (1994). This Part 2 supplements or amends the corresponding clauses of IEC 60335-1 in order to transform it into the IEC Standard: Safety requirements for commercial electric washing machines.
In case individual clauses of Part 1 are not referred to in this Part 2, they shall apply if justified. When "addition", "modification" or "replacement" is indicated in this standard, the relevant text of Part 1 shall be modified accordingly. Note: In this standard, 1) the following fonts shall be used: Requirement itself: Roman; Test specification: Italic! Notes: Small Roman. The boldface words in the text are defined in Chapter 2. 2) The clauses, notes and diagrams added to IEC 60335-1 are abbreviated from 101. 3) The appendices added to IEC 60335-1 are indicated by letters such as AA and EB. 1 Scope National Standard of the People's Republic of China Safety of household and similar electrical appliances Particular requirements for commercial electric dishwashers GB 4706. 502001
idt IEC 60335-2-58: 1995
This standard deals with the safety of electric dishwashers not intended for household use. Such appliances are used for washing dishes, glassware, cutlery, forks, chopsticks and similar items, with or without water heating or drying devices. For single-phase appliances connected to a phase and neutral conductor, the rated voltage shall not exceed 250 V, and for other appliances, the rated voltage shall not exceed 480 V. V. NOTE 1 Examples of appliances are:
Conveyor (continuous) dishwashers:
Batch dishwashers
Dishwashers.
NOTE 2 Such appliances are used in kitchens such as restaurants, food shops, hospitals and in commercial enterprises such as bakeries and butchers. Appliances using other forms of energy, the electrical parts of which are also within the scope of this standard. To the extent practicable, this standard deals with the common hazards arising from such appliances. NOTE 3 The following should be noted:
- For appliances intended for use exclusively in vehicles, ships or aircraft, necessary additional requirements are permitted: - For appliances intended for use exclusively in tropical countries, necessary special requirements are permitted! - For appliances intended for use exclusively for sterilization, necessary special requirements are permitted. Additional requirements for pressure equipment. In many countries, additional requirements stipulated by national health, labor protection, water supply and other similar authorities should also be considered! In many countries, additional requirements are stipulated for pressure equipment. This standard does not apply to:
Appliances designed for industrial use, such as machines for washing final product packaging containers in the food industry (e.g. bottle washing machines) and machines used in production processes:
-Dishwashing machines that do not constitute a functional unit, for example, whose conveying device transfers dishes from one independent unit to another,
Separately driven conveying mechanisms not installed in the appliance; -Appliances intended for use in places where special conditions are required, such as the presence of corrosive or explosive atmospheres (dust, steam or combustible gases), etc.
2 Definitions
This chapter in GB 4706.1-1998 is applicable except for the following contents. 2.2.4 Add the following content to this clause
Note: The rated power input is the sum of the power inputs of all individual components in the appliance that can work simultaneously. When there are several such combinations, the rated power input shall be determined by the combination with the largest power input. 2.2.9 This clause shall be replaced by the following content:
Normal operation
The appliance shall be operated under the following conditions:
GB 4706. 50—2001
The appliance intended to be connected to the water supply system shall be connected to the water supply having the pressure and temperature specified in the instructions. If a range of pressures and temperatures is specified in the instructions, subjecting the water supply to the temperature within the range that will produce the most unfavorable result. The water inlet intended to be used only for cold water shall be connected to a water source having a water supply temperature of 15°C ± 5°C. The maximum designed volume of water is poured into the appliance without adding rinse aid or detergent. Dishwashers are tested with dishes and the dishwasher is loaded with the maximum number of dishes specified in the instructions for use. The dimensions of the dishes are in accordance with IEC 436. Other appliances are tested without dishes. Batch dishwashers are operated in a continuous cycle with a 1 min rest period at the end of each cycle. If a cover or hood is provided,It should remain on during the rest period.
Continuous dishwashers and dishwashers should operate continuously. The appliances should operate as follows:
Appliances with timers or program controllers should operate with the program that will produce the most unfavorable temperature results. Appliances without timers or program controllers should operate in accordance with the instructions for use. However, controls intended to be adjusted by the user should be adjusted to the highest setting or to the position that will produce the most unfavorable temperature results. The following clauses are added to this chapter:
2.2.1D1 Continuous (rack or chain conveyor) dishwasher conveyor (rack off light) dishwasher An appliance that can automatically move continuously loaded dishes forward through various processes to complete multiple operations such as washing and rinsing. 2.2.102 Batch dishwasher Batch dishwasher An appliance that can continuously complete various processes after loading once. 2.2. 103 Brush machine Brush machine An appliance that places sulfur dishes in a brush or similar part, or keeps them in contact with a brush or similar part for cleaning. 2.2.104 indicated level indicated level the highest liquid level mark marked on the appliance for correct operation. 3 General requirements
This clause in GB 4706.1-1998 is applicable. 4 General conditions for testing
This clause in GB 4706.1-1998 is applicable except for the following. 4.3 This clause adds the following content
The test in clause 22.6 is carried out before the test in clause 19. This clause adds the following clause:
4.101 The appliance is tested as an electric appliance even if it is equipped with a heating element. The appliance with a water heating device can operate without power supply to the heating element. If this is more unfavorable, the test is carried out without power supply to the heating element.
4.102 Appliances assembled with other appliances or equipped with other appliances are tested in accordance with the requirements of this standard. Other appliances are operated simultaneously in accordance with the requirements of the relevant standards.
5 Blank
6 Classification
GB 4706-50—2001
This chapter in GB4706.1—1998 is applicable except for the following contents. 6.1 This clause is replaced by the following contents:
Regarding the category of protection against electric shock, the appliance shall belong to category 1, and compliance shall be determined by visual inspection and relevant tests. Note: Category 0I appliances are officially recognized. (Japan) 6.2 The requirements of this clause are replaced by the following contents: Regarding the degree of protection against harmful ingress of water, the appliance shall be at least IPX1. This clause adds the following contents:
Note 101: Appliances intended to be installed in kitchens are required to have an appropriate degree of protection against harmful ingress of water, depending on their installation height. (France) 7 Marking and instructions
This chapter in GB4706.1—1998 is applicable except for the following contents. 7.1 The following is added to this clause:www.bzxz.net
In addition, the appliance shall be marked with:
- For appliances intended to be connected to a water supply, the water pressure or pressure range shall be expressed in kPa, unless otherwise specified in the instructions;- The maximum permissible steam pressure shall be expressed in kPa, unless otherwise specified in the instructions;- The maximum permissible hot water pressure shall be expressed in kPa, unless otherwise specified in the instructions;- The maximum permissible temperature of water, steam and hot water shall be expressed in °C, unless otherwise specified in the instructions. If the reverse rotation of the motor may cause a hazard, the direction of rotation shall be clearly and conspicuously marked on the motor. 7.6 The following is added to this clause:
The following symbol is added:
Equipotential (IEC 60417-5021-a)*
7.12.1 This clause is replaced by the following!
The appliance shall be accompanied by instructions detailing the special precautions necessary for installation + The maximum height of the drain outlet shall be stated in the instructions: User maintenance such as cleaning, etc. shall also be provided. For appliances permanently connected to fixed wiring and for appliances in which the leakage current may exceed 10 mA, particularly when disconnected or out of service for long periods, or when first installed, the instructions shall give advice on the ratings of the protective device to be installed, i.e. earth leakage relay. If the appliance is not jet proof, clear and detailed instructions shall be given with the appliance to the user stating that the appliance shall not be cleaned by jets of water.
Compliance is checked by inspection.
7.12.4 This clause is amended by the following:
The instructions for use of unitized appliances having a separate control panel for use with dry-standing appliances shall state that the control panel may only be connected to the specified appliance in order to avoid possible hazards. 7.15 This clause is amended by the following:
If it is not possible to mark the fixed appliance so that it can be seen after installation, the corresponding information shall also be given on a label inside or outside the instructions which may be fixed near the installed appliance. NOTE: Built-in appliances are an example of such fixed appliances. This chapter adds the following clauses:
7.101 Apparatuses for opening and closing water by hand or manual operation shall be marked with an indication of the liquid level. *See IEC417, 1973, Graphical Special Numbers for Use on Equipment - Index, Introduction and Enclosed Pages Compliance is checked by inspection.
GB 4706-502001
7.102 Equipotential bonding terminals shall be marked with equipotential symbols. (See 7.6) These markings shall not be marked on nails, removable washers or other parts that may be removed when making wire connections. Compliance is checked by inspection.
8 Protection against live parts
This chapter in GB1706.1-1998 is applicable. 9 Starting of electric appliances
9.1 To comply with the requirements of Chapter 11, fan motors used for cooling shall be able to start under all voltage conditions that may occur in actual use. Compliance is checked by starting the motor three times at 0.85 times the rated voltage. The motor is at room temperature at the start of the test. Each start shall be made under conditions in which the motor is ready to start normal operation or, for automatic appliances, under conditions at the start of a normal operating cycle. Between two consecutive starts, the motor is allowed to come to rest. When the motor is not equipped with a high-speed starting switch, the appliance shall repeat the above test at 1.06 times the rated voltage. In all the above cases, the motor shall be able to start and shall operate in a manner that does not affect safety, and its overload protection device shall not operate. Note: During the test, the supply voltage shall not drop by more than 1%. 10 Input power and current
This chapter in GB4706.1-1998 is applicable except for the following. 10.1 The following is added to this clause:
Note 101: The representative stage is the stage with high total rated power. 11 Heating
This chapter in GB 4706.11998 is applicable except for the following contents. 11.2 The following contents are added to this clause:
Appliances fixed to the floor and appliances with a mass greater than 40 kg and not equipped with rollers, castors or similar devices shall be installed in accordance with the instructions. If no instructions are provided, these appliances are deemed to be placed on the floor for use. However, appliances equipped with electric heating elements for drying, except continuous dishwashers, are placed in the test corner as close to the two side walls as possible. 11.7 This clause is replaced by the following contents:
The appliance is operated continuously until a steady state is established. At the end of the test, when the appliance reaches the maximum temperature, the electric drain pump driven by a separate motor and turned on and off by a manual switch is allowed to undergo an operating phase equal to 1.5 times the time required to empty a container filled with water to the indicated level; the height of the drain outlet is the maximum value indicated in the instructions.
12 Blank Chapter
3 Leakage current and electrical strength at working temperature 13
This chapter in GB4706.1-1998 is applicable except for the following contents. 13.2 The following modifications are made to this clause:
Replace the following contents with the allowable value of leakage current for free-standing appliances of Class I, appliances connected with a pair of flexible cords and plugs
-For other appliances
Go to 101: The limit of leakage current is different. (Japan) The following contents are added to this clause:
According to the rated input power of the appliance 1mA/kW, the maximum limit is 10mA. According to the rated input power of the appliance 1mA/kW, there is no maximum limit, GB 4706-50-2001
When the appliance is equipped with Class I or Class II structural components, the leakage current of these components shall not exceed the values given in GB4706.1. 14 Blank Chapter
15 Resistance to moisture
This chapter in GB4706.1-1998 is applicable except for the following contents. 15.1.1 This clause adds the following contents:
In addition, IPX1, IPX2,Both IPX3 and IPX4 appliances are subjected to the following splash test for 5 min using the apparatus shown in Figure 101. During the test, the water pressure should be adjusted to cause water to splash 150 mm from the bottom of the bowl. For appliances normally used on the floor, the bowl is placed on the floor; for all other appliances, the bowl is placed on a horizontal support surface 50 mm below the lowest edge of the appliance and then moved around the appliance so that water splashes on the appliance from all directions. Note that the water stream should not be sprayed directly onto the appliance. 15.1.2 This clause is amended as follows:
Appliances normally used on a table should be placed on a support surface, each side of which is 15 cm ± 5 cm larger than the orthographic projection of the appliance on the support surface.
15.2 This clause is replaced by the following:
Appliances shall be constructed so that in normal use, even when the water inlet door cannot be closed, the leakage of the water body will not affect its electrical insulation. Compliance is checked by the following test: Appliances with type X connection, except those equipped with specially prepared flexible cords, shall be equipped with the lightest permissible flexible cable or a flexible cord of the smallest cross-sectional area specified in 26.2. Other appliances shall be tested in the delivery state. Remove detachable parts.
Appliances filled with water are completely filled with water containing approximately 1% sodium chloride (NaCl). Then, an additional amount equal to 5% of the dishwasher capacity or 10 L, whichever is greater, is uniformly filled over a period of 1 min. Other appliances are filled with water. After a complete cycle of normal operation, the automatic timer switch, float or pressure switch is deactivated. When the water reaches the maximum level during normal operation of the appliance, 5 g of the standard detergent specified in Appendix AA is added to the water in the appliance at per litre of water and the appliance is operated as expected. Only one switch shall be inoperative at a time.
If the appliance is not equipped with a device to prevent overfilling, water filling shall continue for 15 min after any flooding occurs. If a float or pressure switch is provided to prevent overflow, water filling shall be stopped by operation of the filling switch and the test shall be terminated. If both a timer and a filling switch are provided, the above test shall be carried out a second time with the timer operating normally and the filling switch inoperative. Appliances intended for use as work surfaces shall also be subjected to the following test: 0.2 l of water is poured evenly over the centre of the top cover of the appliance from a height of about 50 mm for 15 min. The appliance shall then be subjected to the electrical strength test of 16.3. Inspection shall show that there is no trace of water on the insulation sufficient to reduce the creepage distances and electrical clearances below those specified in 29.1.
15.3 The following is added to this clause:
NOTE 101: If it is not possible to place the entire appliance in a wet box, the parts containing electrical components are tested separately, but attention should be paid to the conditions inside the appliance. The following clause is added to this chapter:
15.101 Appliances equipped with a water switch for filling or cleaning should be constructed so that water flowing from the water switch cannot contact live parts.
Compliance is checked by the following test:
The appliance is connected to a water source with the maximum required water supply pressure. The water inlet switch is fully opened for 1 min. The tiltable and movable parts, including the cover, are tilted or placed in the most unfavorable position. The rotatable outlet of the water switch is positioned so that water flows to those parts that will produce the most unfavorable results. Immediately after the above treatment, the appliance should be subjected to the electrical strength test specified in 16.3. 16 Leakage current and electrical strength
GB 4706.50-2001
This chapter in GB1706.1-1998 is applicable except for the following contents. 16.2 This clause is amended as follows:
Replaced with the following contents: Allowable value of leakage current for free-standing appliances: For appliances connected with cords and plugs: 2 mA/kW based on the rated power input of the appliance, with a maximum limit of 10 mA. For other appliances: 2 mA/kW based on the rated power input of the appliance, with no maximum limit. Note 101: The limit of leakage current is different. (Japan) 17 Overload protection of transformers and related circuits This chapter in GB4706.1--1998 is applicable. 18 Durability
This chapter in GB 4706.1-1998 is not applicable. 19 Abnormal operation
This chapter in GB 4706.1-1998 is applicable except for the following contents. 19.1 This clause adds the following contents:
Appliances with a program controller or timer shall also be subjected to the test of 19.101. 19.2 This clause adds the following contents:
The appliance shall be filled with enough water to just immerse the heating element. 19.4 This clause adds the following contents:
Note 101: In normal use, the main contacts of the contactor used to connect or disconnect the heating element are set in the "on" position. If two contactors are operated independently, or one contactor controls two independent sets of main contacts, these contacts are locked in the "on" position in turn. 19.7 This clause is modified as follows:
Replace the text in front of the table with the following content: Lock the moving parts and start the appliance from a cold state at the rated voltage or the upper limit of the rated voltage range for the following time: 5 minutes for appliances without a program controller or timer; for appliances with a program controller or timer, equal to the maximum time allowed by the program controller or timer. For appliances with motors and capacitors in the auxiliary winding circuit, operate with the rotor blocked and one capacitor disconnected at a time. Unless these capacitors comply with GB3667, the appliance repeats this test with one capacitor short-circuited at a time.
1) If the appliance has more than one motor, this test Carry out for each motor separately. 2) Alternative tests for protected motor units are listed separately in Appendix D. 3) This test is carried out with the rotor speed increased, because some motors with capacitors may start or not start, and different results may be obtained. During the test, the temperature of the winding should not exceed the value shown in Table 6. The following clauses are added to this chapter:
19.101 For appliances with program controllers or timers, their structure should, as far as possible, eliminate the risk of fire, mechanical accidents or electric shock in the event of misoperation or failure of control devices such as program controllers and timers or their related components. The appliance is operated at the rated voltage or the upper limit of the rated voltage range under normal working conditions. Its compliance is checked by adopting any operating mode or setting any fault condition expected to occur in normal use. Only one fault condition is simulated at a time, and multiple tests are to be carried out continuously.
GB 4706.50—2001
During the test, the appliance shall not emit flames or produce molten metal, and the temperature of the windings shall not exceed the values shown in Table 6. NOTE
1) Examples of fault conditions are as follows:
--Stop of the program controller at any position! --Open circuit or short circuit of one or more phases of the power supply, disconnection and reconnection of components at any stage of program operation,
--Failure of the solenoid valve
--Opening and reclosing of the door or cover of the appliance at any stage of program operation, if possible; 2) Normally, the tests are carried out under the conditions which are expected to produce the most unfavourable results. 3) If the absence of water in the appliance is considered to be a more severe condition for starting any sequence, the test of that sequence shall be carried out with the water supply shut off; however, the water supply shall not be shut off after the sequence has started. If the appliance stops at any particular point in the sequence, the test for that fault condition is terminated. 4) For these tests, the thermal controls are not short-circuited. 5) If the conditions occurring in the appliance are covered by the appropriate standards, components complying with the relevant IEC standards are not open-circuited or short-circuited. 6) The test of the automatic water filling device remaining open has been carried out during the test of 15.2. 7) The test of the motor capacitor being short-circuited or open-circuited has been carried out during the test of 19.7. 20 Stability and mechanical hazards
This clause of GB4706.1-1998 applies except as follows. 20.1 This clause replaces the requirement with the following: Appliances shall have adequate stability except those intended to be fixed to a support surface. Replace the last five paragraphs of the test specification with the following: The appliance to be tested is either empty or filled with water, whichever is the most unfavorable, and is loaded with the maximum load of dishes specified in the instructions for use; all doors, lids, rollers and castors are placed in the most unfavorable position. The appliance should not tip over.
Appliances with a mass greater than 40 kg shall also be subjected to the test specified in 20.101. In addition, front-loaded appliances shall also be subjected to the test specified in 20.102.
Add the following clause to this chapter:
20.101 Close the door or lid of the appliance and place it in the most unfavorable position of the conditions described in 20.1, but support it on a horizontal surface. Apply a force of 340N to the top edge of the appliance. The appliance should not tip over.
Note: This test is only performed in case of doubt. 20.102 The appliance is not loaded with bowls or water. If it has rollers or castors, it is turned to the most unfavorable position. Then a weight of 23 kg is added to or suspended at the center of the open door or the center of the bowl drawer in the outermost position, whichever is the most unfavorable. Unless the water is emptied or the water supply is shut off at any stage of the working cycle, the water tank forming an integral part of the appliance shall be filled with water during the test. The machine shall not be tilted during this test.
Note: For appliances intended to be fixed to a supporting surface or intended to be embedded in a state where tilting is impossible. This test is not carried out. 20.103 Vertical lifting doors should provide adequate protection against personal injury. Vertical lifting doors with a mass greater than 5 kg and all vertical lifting doors with a lifting height exceeding 400 mm shall be equipped with an operating locking device and an emergency locking device. The emergency locking device shall be able to lock at least 120 mm above the impact surface. Other vertical lifting doors shall have an impact surface with a width of at least 20 mm and be equipped with an operating locking device. If an emergency locking device is also provided, the requirements for the impact surface do not apply. In this case, the emergency locking device shall be able to function at least 120 mm above the impact surface.
: A gravity balance system that also ensures that the force that causes the lift door to fall in the event of an individual failure is no more than 50 N can be used as an alternative device for all platforms:
GB 4706. 50—2001
Compliance is determined by inspection, manual test and measurement. 20.104 Mechanical hazards, such as the use of key switches or tools, shall be prevented during normal use cleaning and maintenance in accordance with the instructions provided.
Compliance is determined by inspection and manual test. 20.105 Except for those with adequate protection against hot water splashing when the door or lid is open, the door or lid shall be interlocked so that the dishwasher can only be operated when the door and lid are closed. Compliance is determined by inspection and manual test. : Slight foam or splash of hot water immediately after the door or lid is opened shall be disregarded. 20.106 Continuous dishwashers shall not start automatically after the door or lid is closed. Compliance is checked by inspection and by manual test. 21 Mechanical strength
This clause in GB4706.1-1998 applies except as follows. This clause adds the following:
NOTE 101: For appliances intended to be installed in kitchens, different values of impact energy may be used according to the height of the impact point. (France) 21.101 Racks and shelves supporting the washing shall have adequate mechanical strength and shall not deform in normal use. Compliance is checked by the following test: Each rack is loaded uniformly at a rate of 1000N/m2 in turn, held for 1 min and then unloaded. The rack and its supporting parts shall not show any noticeable deformation.
22 Structure
This clause in GB4706.1-1998 applies except as follows. 22.6 This clause shall be amended as follows:
The test specification shall be replaced by the following:
Compliance shall be determined by inspection and by the following tests in the specified sequence: The appliance shall be operated under the conditions specified in Clause 11 except that it shall be subjected to three consecutive operating cycles. Continuous dishwashers shall be operated for one cycle, the duration of which is equal to the time taken to move a sulphur disc through the entire process of the appliance. The hardness of the test water, expressed as CaCO, shall be between 25 mg/L and 75 mg/L. At the beginning of each rinse stage and after the machine has been filled with water, the foaming agent shall be added through the open door and then closed until the machine is stopped as programmed. The automatically controlled rinse agent dispenser shall be rendered inoperative during the test.
The foaming agent is a 25% by mass aqueous solution of triton DF-12, 2.5 mL of which and 20% of sodium chloride (NaCl) are added to every 8 L of water.
If the machine stops due to excessive foaming, the test is terminated 1 h after the start of the source washing phase. Then, a solution consisting of 0.6 ml of the rinse agent specified in Annex AA is added by syringe to each litre of distilled water and dripped into those parts of the appliance where liquid leakage may occur and affect the electrical insulation. Moving parts are in operation or at rest, whichever is more unfavorable.
After the above test, visual inspection shall show that there is no accumulation of detergent or any trace of liquid on the windings or insulation that would reduce the creepage distance below that specified in 29.1.
The following is added to this clause:
NOTE 101: Parts subjected to the ageing test specified in Annex BB are not considered to be parts where leakage may occur. The following clause is added to this chapter:
22.101 Appliances shall be protected so that moisture or grease cannot accumulate to an extent sufficient to affect the values of creepage distances and electrical insulation. Compliance is checked by inspection.
GB 4706. 50—2001
22.102 Thermal cut-outs for the protection of circuits with heating elements and of motors whose accidental start-up may cause a hazard shall be of the non-automatic reset, free tripping type and shall be capable of disconnecting the supply voltage at all poles. Ball-head and capillary type thermal cut-outs which operate during the tests of clause 19 shall be such that the breaking of the capillary tube does not affect the compliance of the appliance with the requirements of 19.13.
Compliance is checked by inspection, by manual test and by breaking the capillary tube. NOTE: Care should be taken to ensure that the capillary tube is not closed when broken. 22.103 Signal lamps, switches or buttons indicating danger, alarm or similar conditions shall only be red. Compliance is checked by inspection.
22.104 The water level mark which must be reached on manually filled appliances shall be so placed that it can be easily seen during filling. Compliance is checked by inspection.
22.105 Portable appliances shall be constructed so as to prevent hazards caused by objects placed on tables or on the floor from penetrating the bottom. Compliance is checked by inspection and, where necessary, by measurement. NOTE Appliances without feet are considered to comply if each live part is not less than 6 mm from the sound bearing surface through any opening. This distance is increased to 10 mm for appliances fitted with feet and intended for use on tables and 20 mm for appliances intended for use on the floor. 22.106 Appliances shall be subjected to the water pressure to which they may be subjected in normal use. Compliance is checked by subjecting those parts of the appliance which are subject to the pressure of the water supply to a static pressure equal to twice the maximum permissible inlet pressure or 1 200 kPa (12 bar), whichever is the greater, for 5 min. During the test, no part, including the inlet hose, shall be stable. The pressure which would be encountered in normal use when the valve is set shall be applied to the inlet. 22.107 The appliance shall be so constructed that during the drying process, contact between the items being cleaned and the heating element, which is not submerged in water, does not give rise to a risk of ignition.
Compliance is checked by the following test: The appliance is placed on a white pine board covered with tissue paper and a vinyl disc 80 mm in diameter and 2 tm thick is placed in the most unfavourable position, directly on the heating element if possible. The appliance is then operated through a drying cycle under the following conditions with the heating element energised.
The appliance is connected to a water supply with a maximum water hardness of (50 mg ± 25 mg)/l, expressed as CaCO, and is operated as in normal use, but without detergent and without dishes. Appliances fitted with a programmed control are tested according to the most unfavourable cycle. Appliances not fitted with a programmed control are operated in a continuous cycle in accordance with the instructions for use. The appliance is operated at 1.1 times the rated voltage. When one third of the drying time has passed or smoke or smell appears, the door or lid shall be opened immediately according to the first appearance of the two, that is, the shorter time. During the test, flames, burning drops or hot sparks shall not cause the fire to spread to other parts of the appliance or the surrounding of the appliance. Except for the flame on the disc, any other flame shall be extinguished within 30 seconds, thin paper shall not burn, and the wood board shall not be scorched. Notes 1) Thin paper is a thin, soft, thick and light packaging paper specified in 6.86 of [SO 4046]. It is specially used for packaging delicate and easy-to-open objects. Its material is between 12 g/m2 and 30 g/m2.
2) The material of the test disc is natural ethylene without filler, without flame retardant, and its relative density is 0.96±0.005. 22.108 The structure of the appliance shall be such that the heating element cannot be deformed by the heating element or its support or container itself, resulting in contact with combustibles in the appliance or any container of the appliance.
Compliance is determined by inspection.
Note: Metal mesh containers, whether covered with thermoplastic material or not, are not considered to be deformed by heat. 22.109 If restarting may cause danger, such as mechanical (moving parts) or thermal (hot parts or liquid) danger, the appliance shall not automatically restart when the power supply is restored after temporary disconnection. Compliance is determined by the following test: GB 4706.50—2001
The appliance is operated at rated voltage in accordance with the instructions for use! At any time during the operating cycle, disconnect the appliance from the power supply so that any moving parts stop and then restore the power supply.
23 Internal wiring
This clause in GB4706.1-1998 is applicable except for the following. 23.3 This clause adds the following content:
When the capillary tube of the thermostat has a tendency to bend in normal use, the following clauses apply: When the capillary tube is used as a component assembly for internal wiring, GB 4706.1 applies; a single capillary tube should be bent 1000 times at a rate not exceeding 30 times per minute. Note 101: In the above case, if it is impossible to move the moving parts of the appliance at a given rate due to reasons such as the mass of the components, the bending rate may be reduced.
After the bending test, the capillary tube should not show signs of damage within the meaning of this standard and damage that affects further use. However, if a single damage to the capillary tube renders the appliance inoperable (fail-safe), the individual capillary tube is not tested and the capillary tube installed as part of the internal wiring is not checked for compliance. In this case, compliance is checked by breaking the capillary tube. NOTE 102 Take care to ensure that the capillary tube is not completely closed when broken. 24 Components
This clause in GB 4706.11998 is applicable. Power supply connection and external flexible cord
This clause in GB 4706.11998 is applicable except as follows. 25.1 The following changes are made to this clause:
The appliance shall not be fitted with an appliance inlet.
25.3 The following additions are made to this clause:
Fixed appliances and appliances with a mass greater than 40 kg and not equipped with wheels, castors or similar devices shall be constructed so that the appliance can be installed in accordance with the instructions and then connected to the power supply cord.
Terminals used for permanent connection of cables to fixed wiring may also be suitable for type X connection of the power cord. In this case, the appliance shall be equipped with a cord anchorage complying with 25.16. If the appliance is equipped with a set of terminals for connecting a flexible cord, these terminals shall be suitable for type X connection of the flexible cord. In both cases, the instructions shall provide detailed information on the power cord. The connection of the power cord of built-in appliances may be completed before the appliance is installed. Compliance is checked by inspection.
25.7 The following changes are made to this clause:
Replace the specified type of power cord with the following: The power cord shall be an oil-resistant flexible sheathed cable not lighter than ordinary chloroprene rubber or other equivalent synthetic rubber sheathed flexible cord (designated No. 57 in IEC 245).
26 Terminals for external conductors
This chapter in GB4706.1-19J8 is applicable.
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