Safety of household and similar electrical appliances - Part 60 : Particular requirements for clothes dryers and towel rails
1 Scope
This clause of GB/T 4706.1-2024 is replaced by the following.
This standard deals with the safety of clothes dryers and towel rails.
This standard applies to electric clothes dryers and towel rails for drying textiles on racks located in a warm airflow, clothes dryers intended for drying footwear or gloves and to electric towel rails, for household and similar purposes, their rated voltage being not more than 250 V.
Note 101: The clothes racks can be fixed or free-standing in a cabinet. The air circulation can be natural or forced.
Appliances not intended for normal household use but that nevertheless may be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard.
As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons in and around the home. However, in general, it does not take into account
– persons (including children) whose
? physical, sensory or mental capabilities; or
? lack of experience and knowledge
prevents them from using the appliance safely without supervision or instruction;
– children playing with the appliance.
Note 102: Attention is drawn to the fact that
– for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may be necessary;
– additional requirements may be specified by the national health authorities concerned.
Note 103: This standard does not apply to
– spin extractors (GBT 4706.26);
– tumble dryers (GBT 4706.20);
– appliances intended exclusively for industrial purposes;
– appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).
2 Normative references
This clause of GB/T 4706.1-2024 is applicable.
3 Terms and definitions
This clause of GB/T 4706.1-2024 is applicable except as follows.
3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions
Textiles positioned over the racks or rails in accordance with the instructions. The textiles are pre-washed, double-hemmed cotton sheets having dimensions approximately 700 mm × 700 mm and a specific mass between 140 g/m2 and 175 g/m2 in the dry condition.
Four layers of textiles are used for appliances having a heated surface supporting the textiles. One layer is used for appliances in which the textiles are dried by a warm airflow.
Note: In case of doubt, the cotton sheets are conditioned for at least 24 h at a temperature of 20 °C ± 5 °C and a relative humidity of (60 ± 5) %.
For clothes dryers intended for drying footwear or gloves, having loads that cover all of the air outlets, if any, the air outlets are blocked with a number of layers of textile material that results in the most unfavourable condition without operation of a protective device.
3.5 Additional definitions:
3.5.101
clothes dryer
appliance that does not have a mechanical action such as tumbling or spinning that is intended to dry clothes by air flow
Note: These appliances may also be suitable to dry footwear, gloves and the like.
3.5.102
towel rail
appliance to hold, warm and dry towels
Note: These appliances may also be suitable to dry swimwear, bath robes or the like.
3.6 Additional definition:
3.6.101
free space
space with a volume exceeding 60 L where a child can be entrapped and which is accessible after opening any door or lid and removing any detachable internal part, including shelves and containers. In calculating the volume, a space with any single dimension not exceeding 150 mm or any two orthogonal dimensions, each of which do not exceed 200 mm, is ignored.
4 General requirement
This clause of GB/T 4706.1-2024 is applicable.
5 General conditions for the tests
This clause of GB/T 4706.1-2024 is applicable.
6 Classification
This clause of GB/T 4706.1-2024 is applicable except as follows.
6.2 Addition:
Clothes dryers intended for drying footwear or gloves that when in use have electrical components located below or inserted inside the footwear or gloves shall be at least IPX2. All other appliances shall be at least IPX1.
7 Marking and instructions
This clause of GB/T 4706.1-2024 is applicable except as follows.
7.12 Addition:
The instructions for clothes dryers shall include the substance of the following:
WARNING: This appliance is intended only for drying textiles washed in water.
7.12.1 Addition:
The installation instructions for fixed towel rails shall include the substance of the following:
WARNING: In order to avoid a hazard for very young children, this appliance should be installed so that the lowest heated rail is at least 600 mm above the floor.
The instructions for fixed towel rails likely to be used in a bathroom shall state that the towel rail is to be installed so that switches and other controls cannot be touched by a person in the bath or shower. This instruction is not necessary if the towel rail is at least IPX4.
8 Protection against access to live parts
This clause of GB/T 4706.1-2024 is applicable.
9 Starting of motor-operated appliances
This clause of GB/T 4706.1-2024 is not applicable.
10 Power input and current
This clause of GB/T 4706.1-2024 is applicable.
11 Heating
This clause of GB/T 4706.1-2024 is applicable except as follows.
11.1 Addition:
Towel rails are also subjected to the test of 11.101.
11.4 Addition:
If the temperature rise limits are exceeded in appliances incorporating motors, transformers or electronic circuits, and the power input is lower than the rated power input, the test is repeated with the appliance supplied at 1.06 times rated voltage.
11.6 Addition:
Combined appliances are operated as heating appliances.
11.7 Replacement:
Appliances are operated until steady conditions are established.
If drying action is controlled by a timer, clothes dryers are operated for two cycles with the timer set to the maximum time.
11.8 Addition:
The temperature rise of the textiles shall not exceed 75 K.
The temperature rise at the air outlet of clothes dryers intended for drying footwear or gloves shall not exceed the limits of Table 3 for handles held for short periods only.
The temperature rise limits of motors, transformers and components of electronic circuits, including parts directly influenced by them, may be exceeded when the appliance is operated at 1.15 times rated power input.
For oil-filled appliances, the temperature rise of parts in contact with oil is not measured.
11.101 Towel rails are operated at rated power input but without textiles.
The temperature rises of the surface shall not exceed the following values:
– metal and painted metal 60 K
– vitreous enamelled metal 65 K
– glass and ceramic surfaces 70 K
– plastic having a thickness exceeding 0.3 mm 85 K
The temperature rise limit of 85 K also applies for plastic material having a metal finish of thickness less than 0.1 mm.
Note: When the thickness of the plastic coating does not exceed 0.3 mm, the temperature rise limits of the supporting material apply.
