IEC 60335-2-11:2019

Household and similar electrical appliances - Safety - Part 2-11: Particular requirements for tumble dryers

IEC 60335-2-11:2019 deals with the safety of electric tumble dryers intended for household and similar purposes, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances. This standard applies to the drying function of washing machines having a drying cycle. This standard also deals with the safety of tumble dryers that use a refrigerating system, incorporating sealed motor-compressors, for drying textile material. These appliances may use flammable refrigerants. Additional requirements for these appliances are given in Annex AA. Appliances not intended for normal household use but which 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. Examples of such appliances are tumble dryers for communal use in blocks of flats or in launderettes. As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons. 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.
Attention is drawn to the fact that:
– for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may be necessary;
– in many countries, additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour, the national water supply authorities,
This standard does not apply to:
– 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);
– appliances incorporating steam generating devices in which steam is produced at a pressure exceeding 50 kPa.
This eighth edition cancels and replaces the seventh edition published in 2008, Amendment 1:2012 and Amendment 2:2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the seventh edition:
– aligns the text with IEC 60335-1, Ed 5, and its Amendments 1 and 2;
– some notes have been converted to normative text (7.12, 7.12.1, 11.3, 19.101, AA.5.2);
– more detailed test specifications have been given in 11.3 and 15.2;
– specific requirements have been added in 3.1.9, 3.6.101, 7.12, 11.7, 19.1, and Clause 22 to cover appliances with steam generators;
– specific requirements have been added in 22.108 to cover programmable electronic circuits;
– Annex AA has been deleted, because it is covered by Part 1 and the remaining annexes have been renumbered.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its amendments. It was established on the basis of the fifth edition (2010) of that standard.

Appareils électrodomestiques et analogues - Sécurité - Partie 2-11: Exigences particulières pour les sèche-linge à tambour

L'IEC 60335-2-11:2019 traite de la sécurité des sèche-linge à tambour électriques pour usages domestiques et analogues dont la tension assignée n’est pas supérieure à 250 V pour les appareils monophasés et à 480 V pour les autres appareils. La présente norme s'applique à la fonction de séchage des machines à laver le linge ayant un cycle de séchage. La présente norme traite également de la sécurité des sèche-linge à tambour utilisant un système de réfrigération à motocompresseurs hermétiques pour sécher le linge. Ces appareils peuvent utiliser des fluides frigorigènes inflammables. Des exigences supplémentaires pour ces appareils sont données à l’Annexe AA. Les appareils non destinés à un usage domestique normal mais qui néanmoins peuvent constituer une source de danger pour le public, tels que les appareils destinés à être utilisés par des usagers non avertis dans des magasins, chez des artisans et dans des fermes, relèvent du domaine d'application de la présente norme. Les sèche-linge à tambour mis à la disposition commune des usagers dans les immeubles d’habitation ou dans les blanchisseries automatiques sont des exemples de tels appareils. Dans la mesure du possible, la présente norme traite des dangers ordinaires présentés par les appareils, encourus par toutes les personnes. Cependant, la présente norme ne tient généralement pas compte:
– des personnes (y compris des enfants) dont les capacités physiques, sensorielles ou mentales; ou le manque d’expérience et de connaissance les empêche(nt) d’utiliser l’appareil en toute sécurité sans surveillance ou instruction;
– de l’utilisation de l’appareil comme jouet par des enfants.
L'attention est attirée sur le fait que:
– pour les appareils destinés à être utilisés dans des véhicules ou à bord de navires ou d'avions, des exigences supplémentaires peuvent être nécessaires;
– dans de nombreux pays, des exigences supplémentaires sont spécifiées par les organismes nationaux de la santé, par les organismes nationaux responsables de la protection des travailleurs et par les organismes nationaux responsables de l'alimentation en eau;
La présente norme ne s'applique pas:
– aux appareils prévus exclusivement pour des usages industriels;
– aux appareils destinés à être utilisés dans des locaux présentant des conditions particulières, telles que la présence d'une atmosphère corrosive ou explosive (poussière, vapeur ou gaz);
– aux appareils équipés de dispositifs générant de la vapeur dans lesquels la vapeur est produite à une pression dépassant 50 kPa.
Cette huitième édition annule et remplace la septième édition parue en 2008, l'Amendement 1:2012 et l'Amendement 2:2015. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à la septième édition:
– alignement du texte sur l’IEC 60335-1, Éd. 5, et ses Amendements 1 et 2;
– conversion de certaines notes en texte normatif (7.12, 7.12.1, 11.3, 19.101, AA.5.2);
– modalités d’essai plus amplement détaillées en 11.3 et en 15.2;
– ajout d’exigences spécifiques en 3.1.9, 3.6.101, 7.12, 11.7, 19.1 et à l’Article 22 pour couvrir les appareils à générateurs de vapeur;
– ajout d’exigences spécifiques en 22.108 pour couvrir les circuits électroniques programmables;
– suppression de l’Annexe AA puisque son contenu est couvert par la Partie 1, et renumérotation des annexes restantes.
La présente partie 2 doit être utilisée conjointement avec la dernière édition de l’IEC 60335-1 et ses amendements. Elle a été établie sur la base de la cinquième édition (2010) de cette norme.

General Information

• Status: Published
• Publication Date: 14-Apr-2019
• ICS: 13.120 - Domestic safety
• ICS: 97.060 - Laundry appliances
• Technical Committee: TC 61 - Safety of household and similar electrical appliances
• Drafting Committee: MT 37 - TC 61/MT 37
• Current Stage: DELPUB - Deleted Publication
• Start Date: 30-Jan-2024
• Completion Date: 01-Jul-2022

Relations

• Revises: IEC 60335-2-11:2008/AMD1:2012 - Amendment 1 - Household and similar electrical appliances - Safety - Part 2-11: Particular requirements for tumble dryers
• Effective Date: 05-Sep-2023
• Revised: IEC 60335-2-11:2024 - Household and similar electrical appliances - Safety - Part 2-11: Particular requirements for tumble dryers
• Effective Date: 05-Sep-2023
• Revises: IEC 60335-2-11:2008 - Household and similar electrical appliances - Safety - Part 2-11: Particular requirements for tumble dryers
• Effective Date: 05-Sep-2023
• Revises: IEC 60335-2-11:2008/AMD2:2015 - Amendment 2 - Household and similar electrical appliances - Safety - Part 2-11: Particular requirements for tumble dryers
• Effective Date: 05-Sep-2023

Overview

IEC 60335-2-11:2019 - "Household and similar electrical appliances – Safety – Part 2-11: Particular requirements for tumble dryers" is the eighth edition of the IEC safety standard for electric tumble dryers. It covers the safety of tumble dryers and washer‑dryers (drying function) intended for household and similar use at rated voltages up to 250 V single‑phase and 480 V for other appliances. The standard also addresses tumble dryers that use refrigerating systems with sealed motor‑compressors and considers the use of flammable refrigerants. This edition is a technical revision and is intended to be used together with the latest IEC 60335-1.

Key topics and technical requirements

The standard supplements IEC 60335-1 with tumble‑dryer‑specific requirements. Major topics include:

• Scope and applicability

  • Household and similar appliances (including communal launderette or block‑of‑flats dryers).
  • Exclusions: equipment intended exclusively for industrial use, use in special atmospheres (corrosive/explosive), and steam generators producing steam >50 kPa.
  • The standard does not assume protection for users lacking experience/ability or for children playing with appliances.

• Electrical safety and ratings

  • Rated voltage limits, leakage current, electric strength and transient overvoltage requirements.
  • Requirements for protection against access to live parts and proper earthing/terminals.

• Heating and thermal protection

  • Tests and limits for heating elements, surface temperatures, and overload protection to reduce fire/thermal hazards.

• Moisture and mechanical resistance

  • Moisture resistance tests, mechanical strength, drum accessibility and stability to address entrapment and mechanical hazards.

• Abnormal operation and endurance

  • Tests for abnormal conditions, endurance and fault resilience of controls and components.

• Software, electronic controls and steam/refrigerant issues

  • Requirements covering programmable electronic circuits and software evaluation (normative annex).
  • Specific clauses added for appliances incorporating steam generators and for dryers using refrigerating systems (flammable refrigerants addressed by normative annexes and alignment with Part 1).

• Marking, instructions and testing

  • Mandatory markings, user instructions and detailed test specifications for heating, moisture and endurance checks.

Practical applications and who uses this standard

IEC 60335-2-11:2019 is essential for:

• Appliance manufacturers (design, compliance and documentation)
• Test laboratories and certification bodies (safety testing and conformity assessment)
• Product safety engineers and compliance officers (risk mitigation and regulatory alignment)
• Regulatory authorities and standards bodies referencing appliance safety requirements

Using this standard helps ensure safer tumble‑dryer designs, reduces fire and electrical hazards, and supports market access through recognized safety compliance.

Related standards

• IEC 60335-1 - General requirements for household and similar electrical appliances (used in conjunction with this part).
• Other parts of the IEC 60335 series for appliances with multiple functions.

Keywords: IEC 60335-2-11:2019, tumble dryer safety standard, household appliance safety, washer‑dryer safety, flammable refrigerants, sealed motor‑compressors, IEC 60335-1, product compliance, safety testing.

Standards Content (Sample)

IEC 60335-2-11 ®
Edition 8.0 2019-04
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-11: Particular requirements for tumble dryers

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IEC 60335-2-11 ®
Edition 8.0 2019-04
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –

Part 2-11: Particular requirements for tumble dryers

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.120; 97.060 ISBN 978-2-8322-6850-6

– 2 – IEC 60335-2-11:2019 RLV © IEC 2019

CONTENTS
FOREWORD . 4

INTRODUCTION . 7

1 Scope . 8

2 Normative references . 8

3 Terms and definitions . 9

4 General requirement . 10

5 General conditions for the tests . 10
6 Classification . 10
7 Marking and instructions . 10
8 Protection against access to live parts . 12
9 Starting of motor-operated appliances . 12
10 Power input and current . 12
11 Heating . 12
12 Void . 14
13 Leakage current and electric strength at operating temperature . 14
14 Transient overvoltages . 14
15 Moisture resistance . 14
16 Leakage current and electric strength . 15
17 Overload protection of transformers and associated circuits . 15
18 Endurance . 15
19 Abnormal operation . 15
20 Stability and mechanical hazards . 16
21 Mechanical strength . 18
22 Construction . 18
23 Internal wiring . 19
24 Components . 20
25 Supply connection and external flexible cords . 20
26 Terminals for external conductors . 20
27 Provision for earthing . 20

28 Screws and connections . 20
29 Clearances, creepage distances and solid insulation . 20
30 Resistance to heat and fire . 20
31 Resistance to rusting . 21
32 Radiation, toxicity and similar hazards . 21
Annexes . 22
Annex R (normative) Software evaluation . 22
Annex AA (normative) Rinsing agent .
Annex BB AA (normative) Tumble dryers that use a refrigerating system incorporating
sealed motor-compressors for carrying out the drying process . 24
Annex BB (normative) Equipment protection by type of protection "n" . 32
Annex CC (normative) Non-sparking “n” electrical apparatus .

Bibliography . 35

Figure 101 – Probe for measuring surface temperatures . 21

Table 101 – Maximum temperature rises for accessible external surfaces under normal
operating conditions with the door closed . 13

Table 201 – Maximum temperatures for motor-compressors . 27

Table 202 – Refrigerant flammability parameters . 30

– 4 – IEC 60335-2-11:2019 RLV © IEC 2019

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –

Part 2-11: Particular requirements for tumble dryers

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.

International Standard IEC 60335-2-11 has been prepared by IEC technical committee 61:

Safety of household and similar electrical appliances.

This eighth edition cancels and replaces the seventh edition published in 2008,

Amendment 1:2012 and Amendment 2:2015. This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the seventh

edition:
– aligns the text with IEC 60335-1, Ed 5, and its Amendments 1 and 2;

– some notes have been converted to normative text (7.12, 7.12.1, 11.3, 19.101, AA.5.2);

– more detailed test specifications have been given in 11.3 and 15.2;
– specific requirements have been added in 3.1.9, 3.6.101, 7.12, 11.7, 19.1, and Clause 22
to cover appliances with steam generators;
– specific requirements have been added in 22.108 to cover programmable electronic
circuits;
– Annex AA has been deleted, because it is covered by Part 1 and the remaining annexes
have been renumbered.
The text of this International Standard is based on the following documents:
FDIS Report on voting
61/5786/FDIS 61/5803/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 60335 series, under the general title: Household and similar
electrical appliances – Safety, can be found on the IEC website.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments. It was established on the basis of the fifth edition (2010) of that standard.
NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.
This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert that publication into the IEC standard: Safety requirements for tumble dryers.

When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies
as far as is reasonable. When this standard states "addition", "modification" or "replacement",
the relevant text in Part 1 is to be adapted accordingly.
NOTE 2 The following numbering system is used:
– subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;
– unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including
those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.
NOTE 3 The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.
– 6 – IEC 60335-2-11:2019 RLV © IEC 2019

Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the

associated noun are also in bold.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be

• reconfirmed,
• withdrawn,
• replaced by a revised edition, or

• amended.
NOTE 4 The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations may need a transitional period following publication of a new, amended or revised IEC publication in
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
It is the recommendation of the committee that the content of this publication be adopted for implementation
nationally not earlier than 12 months or later than 36 months from the date of publication.
The following differences exist in the countries indicated below.
– 3.1.9: The textile material has different dimensions (USA).
– 6.2: Tumble dryers are not required to be IPX4 (USA).
– 7.12: Actual articles of clothing can be specified instead and warnings are required to be marked on the
appliance regarding the use of chemicals for cleaning (USA).
– 11.2: The test condition is different (USA).
– 11.7: This test is continued until steady conditions are established and different criteria are used to determine
when steady conditions are reached (USA).
– 19.4: The test is different (USA).
– 19.9: A running overload test is carried out on automatically controlled tumble dryers (USA).
– 20.102: When considering accessibility to rotating drums, the maximum drum volume is 60 dm and the
maximum door opening is 200 mm (USA).
– 20.103: This test is different (USA).
– 22.104: The test is different (USA).
– 27.1: Earthing terminals and contacts are allowed to be electrically connected to the neutral conductor of a
tumble dryer (USA).
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a

colour printer.
INTRODUCTION
It has been assumed in the drafting of this International Standard that the execution of its

provisions is entrusted to appropriately qualified and experienced persons.

This standard recognizes the internationally accepted level of protection against hazards such

as electrical, mechanical, thermal, fire and radiation of appliances when operated as in

normal use taking into account the manufacturer's instructions. It also covers abnormal

situations that can be expected in practice and takes into account the way in which

electromagnetic phenomena can affect the safe operation of appliances.

This standard takes into account the requirements of IEC 60364 as far as possible so that
there is compatibility with the wiring rules when the appliance is connected to the supply
mains. However, national wiring rules may differ.
If an appliance within the scope of this standard also incorporates functions that are covered
by another part 2 of IEC 60335, the relevant part 2 is applied to each function separately, as
far as is reasonable. If applicable, the influence of one function on the other is taken into
account.
When a part 2 standard does not include additional requirements to cover hazards dealt with
in Part 1, Part 1 applies.
NOTE 1 This means that the technical committees responsible for the part 2 standards have determined that it is
not necessary to specify particular requirements for the appliance in question over and above the general
requirements.
This standard is a product family standard dealing with the safety of appliances and takes
precedence over horizontal and generic standards covering the same subject.
NOTE 2 Horizontal and generic standards covering a hazard are not applicable since they have been taken into
consideration when developing the general and particular requirements for the IEC 60335 series of standards. For
example, in the case of temperature requirements for surfaces on many appliances, generic standards, such as
ISO 13732-1 for hot surfaces, are not applicable in addition to Part 1 or part 2 standards.
An appliance that complies with the text of this standard will not necessarily be considered to
comply with the safety principles of the standard if, when examined and tested, it is found to
have other features which impair the level of safety covered by these requirements.
An appliance employing materials or having forms of construction differing from those detailed
in the requirements of this standard may be examined and tested according to the intent of
the requirements and, if found to be substantially equivalent, may be considered to comply
with the standard.
– 8 – IEC 60335-2-11:2019 RLV © IEC 2019

HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –

Part 2-11: Particular requirements for tumble dryers

1 Scope
This clause of Part 1 is replaced by the following.

This International Standard deals with the safety of electric tumble dryers intended for
household and similar purposes, their rated voltage being not more than 250 V for single-
phase appliances and 480 V for other appliances.
NOTE 101 This standard applies to the drying function of washing machines having a drying cycle.
This standard also deals with the safety of tumble dryers that use a refrigerating system,
incorporating sealed motor-compressors, for drying textile material. These appliances may
use flammable refrigerants. Additional requirements for these appliances are given in
Annex BB AA.
Appliances not intended for normal household use but which 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.
NOTE 102 Examples of such appliances are tumble dryers for communal use in blocks of flats or in launderettes.
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 103 Attention is drawn to the fact that

– for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may be
necessary;
– in many countries, additional requirements are specified by the national health authorities, the national
authorities responsible for the protection of labour, the national water supply authorities, the national
authorities responsible for transportation and the national authorities for buildings.
NOTE 104 This standard does not apply to
– 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);
– appliances incorporating steam generating devices in which steam is produced at a pressure exceeding
50 kPa.
2 Normative references
This clause of Part 1 is applicable except as follows.

Addition:
ISO 3864-1, Graphical symbols – Safety colours and safety signs – Part 1: Design principles

for safety signs in workplaces and public areas

IEC 60584-1, Thermocouples – Part 1: EMF specifications and tolerances

3 Terms and definitions
This clause of Part 1 is applicable except as follows.

3.1 Definitions relating to physical characteristics
Replacement:
3.1.9
normal operation
operation of the appliance under the following conditions:
The appliance is operated filled with textile material having a mass in the dry condition equal
to the maximum load stated in the instructions.
The textile material consists of pre-washed double-hemmed cotton sheets having dimensions
2 2
approximately 70 cm × 70 cm and a specific mass between 140 g/m and 175 g/m in the dry
condition. The textile material is soaked with water having a temperature of 25 °C ± 5 °C and
a mass equal to that of the textile material.
If the drying function can automatically follow the washing function in a washing machine, the
appliance is not separately loaded. The appliance is operated with the maximum quantity of
textile material stated in the instructions for the combined washing-drying cycle.
Note 101 to entry: Cotton having a water content not exceeding 10 % is considered to be in the dry condition.
Cotton conditioned for 24 h in still air, having a temperature of 20 °C ± 2 °C, a relative humidity between 60 % and
70 % and a pressure between 860 mbar and 1 060 mbar, will contain approximately 7 % water.
A steam generator intended to be filled by hand is filled according to the instructions, water
being added to maintain the steam generation.
A steam generator intended to be filled automatically is connected to the water mains.
3.5 Definitions relating to types of appliances
3.5.101
tumble dryer
appliance in which textile material is dried by tumbling in a rotating drum through which
heated air is blown
3.5.102
condensation-type tumble dryer
tumble dryer in which the air used for the drying process is dehumidified by cooling
3.6 Definitions relating to parts of an appliance
3.6.101
steam generator
device in which steam is produced at a pressure not exceeding 50 kPa and in which the
pressure drops to atmospheric pressure when the steam is not supplied

– 10 – IEC 60335-2-11:2019 RLV © IEC 2019

3.8 Definitions relating to miscellaneous matters

3.8.101
cool down period
final part of the tumble dryer cycle where the drum is continuously rotated with reduced

power to the heating element and with air circulation in order to reduce the possibility of
spontaneous combustion of the clothes load

Note 1 to entry: Continuous rotation does not mean rotation in same direction if the intended operation is to

reverse direction in normal use.

4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable.
6 Classification
This clause of Part 1 is applicable except as follows.
6.2 Addition:
Appliances shall be at least IPX4.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition:
The appliance shall be marked with symbol ISO 7000-0790 (2004-01) or with the substance of
the following:
Read the instructions
7.6 Addition:
[symbol IEC 60417-5041 (2002-10)] caution, hot surface
7.10 Addition:
If the off position is only indicated by letters, the word "off" shall be used.
7.12 Addition:
The instructions for use shall state
– the maximum mass of dry textile material in kilograms to be used in the appliance;
– that the tumble dryer is not to be used if industrial chemicals have been used for cleaning;
– that the lint trap has to be cleaned frequently, if applicable;

– that lint must not to be allowed to accumulate around the tumble dryer (not applicable for

appliances intended to be vented to the exterior of the building);

– that adequate ventilation has to be provided to avoid the back flow of gases into the room

from appliances burning other fuels, including open fires

NOTE 101 (this instruction is not required if the tumble dryer discharges the air into the room).

If symbols IEC 60417-5041 (2002-10) or symbol ISO 7000-0790 (2004-01) are is used, their

its meaning shall be explained.

The instructions shall include the substance of the following.

– Do not dry unwashed items in the tumble dryer.
– Items that have been soiled with substances such as cooking oil, acetone, alcohol, petrol,
kerosene, spot removers, turpentine, waxes and wax removers should be washed in hot
water with an extra amount of detergent before being dried in the tumble dryer.
– Items such as foam rubber (latex foam), shower caps, waterproof textiles, rubber backed
articles and clothes or pillows fitted with foam rubber pads should not be dried in the
tumble dryer.
– Fabric softeners, or similar products, should be used as specified by the fabric softener
instructions.
– The final part of a tumble dryer cycle occurs without heat (cool down cycle) to ensure that
the items are left at a temperature that ensures that the items will not be damaged.
– Remove all objects from pockets such as lighters and matches.
– Fill steam generators only with liquids specified by the manufacturer.
The instructions shall include the substance of the following warning:
WARNING: Never stop a tumble dryer before the end of the drying cycle unless all items
are quickly removed and spread out so that the heat is dissipated.
The instructions for appliances for which the air temperature exceeds 55 °C during the drying
cycle, shall include the substance of the following warning:
WARNING: The appliance must not be supplied through an external switching device, such
as a timer, or connected to a circuit that is regularly switched on and off by a utility.
7.12.1 Addition:
The installation instructions shall state that

– for appliances with ventilation openings in the base, a carpet must not obstruct the
openings;
– exhaust air must not be discharged into a flue that is used for exhausting fumes from
appliances burning gas or other fuels
NOTE 101 (this instruction is not required if the tumble dryer discharges the air into the
room);
– the appliance must not be installed behind a lockable door, a sliding door or a door with a
hinge on the opposite side to that of the tumble dryer, in such a way that a full opening of
the tumble dryer door is restricted.
If the installation instructions state that the tumble dryer can be placed on top of a washing
machine, they shall state which washing machines are suitable. Instructions shall be given for
the assembly of the tumble dryer and washing machine. The instructions shall state how to
obtain any fixing attachments required, unless they are supplied with the appliance.

– 12 – IEC 60335-2-11:2019 RLV © IEC 2019

7.14 Addition:
The height of symbols IEC 60417-5041 (2002-10) and symbol ISO 7000-0790 (2004-01) shall

be at least 15 mm.
Compliance is checked by measurement.

7.15 Addition:
Symbol ISO 7000-0790 (2004-01), or the marking “Read the instructions”, shall be readily

visible when the appliance is installed as in normal use.

7.101 The rear surface, other than that of fixed appliances, shall be marked with symbol
IEC 60417-5041 (2002-10) if its temperature rise exceeds the limits specified in 11.8 for
accessible front surfaces.
The layout of symbol IEC 60417-5041 (2002-10) shall be in accordance with the rules for a
warning sign in ISO 3864-1.
Compliance is checked by inspection.
8 Protection against access to live parts
This clause of Part 1 is applicable.
9 Starting of motor-operated appliances
This clause of Part 1 is not applicable.
10 Power input and current
This clause of Part 1 is applicable.
11 Heating
This clause of Part 1 is applicable except as follows.

11.2 Addition:
Lint traps are cleaned and then 50 % of the area of the filter is blocked.
11.3 Addition:
Temperature rises of the accessible front surface are measured using the probe of
Figure 101. Where the external accessible surfaces are suitably flat and access permits,
then the test probe of Figure 101 is used to measure the temperature rises of external
accessible surfaces specified in Table 101. The probe is applied with a force of 4 N ± 1 N to
the surface in such a way that the best possible contact between the probe and the surface is
ensured. The measurement is performed after a contact period of 30 s.
NOTE 101 The probe may be held in place using a laboratory stand clamp or similar device.
Any measuring instrument giving the same results as the probe may be used.

11.7 Replacement:
Appliances incorporating a timer, a humidity sensing control or other time-limiting control are

operated in cycles. Each cycle comprises an operating period having a duration equal to the

maximum time that can be provided by the control and a rest period of 4 min during which the

appliance is reloaded.
The test may be ended if the temperature rise of any part does not exceed the value

determined during the preceding cycle by more than 8 K.

Appliances having a combined washing-drying cycle are operated with the drying programme

resulting in the highest temperature rise.
Appliances with a steam generator are operated with that steam mode resulting in the
highest temperature rise.
Other appliances are operated continuously until steady conditions are established.
11.8 Addition:
The temperature rises of the accessible front surface shall not exceed the following values:
– metal and painted metal parts 60 K
– vitreous-enamelled metal parts 65 K
– glass and ceramic parts 65 K
– plastic parts having a thickness exceeding 0,3 mm 80 K
The temperature rise limit of 80 K also applies to plastic material having a metal finish of
thickness less than 0,1 mm. When the thickness of the plastic coating does not exceed
0,3 mm, the temperature rise limits of the supporting material apply.
During the test, the temperature rises are monitored continuously and shall not exceed the
values shown in Table 3 and Table 101.

– 14 – IEC 60335-2-11:2019 RLV © IEC 2019

Table 101 – Maximum temperature rises for accessible external

surfaces under normal operating conditions with the door closed

e
Temperature rise
K
c
Surface Surfaces of appliances situated not more than Surfaces situated more

850 mm above the floor after installation than 850 mm above the
d
floor after installation
d
Front surfaces
Other surfaces
Bare metal 38 42 42
a
Coated metal 42 49 49
Glass and ceramic 51 56 56
Plastic and plastic
58 62 62
b
coating > 0,4 mm
a
Metal is considered coated when a coating having a minimum thickness of 90 µm made by enamel or non-
substantially plastic coating is used.
b
The temperature rise limit applies also for plastic material having a metal finish of thickness less than
0,1 mm.
c
When the thickness of plastic coating does not exceed 0,4 mm, the temperature rise limits of coated metal or
glass and ceramic apply.
d
If these values are exceeded, the test is allowed to be repeated with the appliance moved away from the test
corner side wall. The test is repeated for 1 cycle.
e
Temperature rises are not measured on
– the underside of appliances intended to be used on a working surface or floor where these surfaces are
inaccessible to a 75 mm diameter probe having a hemispherical end applied with a force not exceeding
1 N;
– the rear surface of appliances where these surfaces are inaccessible to a 75 mm diameter probe having
a hemispherical end applied with a force not exceeding 1 N.

The temperature rises are measured with the door closed.
The exhaust temperature of the air from the drum, measured at the first lint filter after the air
passes the clothes load, shall be measured for the purposes of 22.105.
12 Void
13 Leakage current and electric strength at operating temperature
This clause of Part 1 is applicable except as follows.
13.2 Modification:
For stationary class I appliances, the leakage current shall not exceed 3,5 mA, or 1 mA/kW
rated power input with a limit of 5 mA, whichever is higher.
14 Transient overvoltages
This clause of Part 1 is applicable.
15 Moisture resistance
This clause of Part 1 is applicable except as follows.

15.2 Modification:
The test is carried out with the drum filled with wet textile material as specified for normal

operation, the mass of the water, however, being approximately 1,5 times the mass of the dry

textile material.
Appliances intended to be connected to the water mains are operated with the outlet of the

condensation circuit blocked. The inlet valve is held open and the filling continued for 1 min

after first evidence of overflow or for 5 min after a protective device operates to stop the

flow. Doors are opened but interlocks are not forced.

For all appliances, 0,5 l of water containing approximately 1 % NaCl and 0,6 % of rinsing
agent, as specified in Annex AA, the solution is rapidly poured over the top of the appliance,
so that the spillage solution flows over the surfaces of the appliance that incorporate controls,
the controls being placed in the on position. The controls are then operated through their
working range, this operation being repeated after a period of 5 min.
The appliance shall then withstand the electric strength test of 16.3 and inspection shall show
that there is no trace of water on insulation that could result in a reduction of clearances or
creepage distances below the values specified in Clause 29.
16 Leakage current and electric strength
This clause of Part 1 is applicable except as follows.
16.2 Modification:
For stationary class I combined appliances, the leakage current shall not exceed 1 mA, or
1 mA/kW rated power input with a limit of 5 mA, whichever is higher.
17 Overload protection of transformers and associated circuits
This clause of Part 1 is applicable.
18 Endurance
This clause of Part 1 is not applicable.

19 Abnormal operation
This clause of Part 1 is applicable except as follows.
19.1 Modification:
Instead of being subjected to the tests of 19.2 and 19.3, appliances are subjected to the tests
of 19.101 and 19.102, as applicable.
Addition:
If operation without water is a more unfavourable condition for appliances connected to the
water mains, the tests are carried out with the water valve closed. This valve is not closed
after the appliance has started to operate.
The steam generator is operated without water.

– 16 – IEC 60335-2-11:2019 RLV © IEC 2019

19.4 Replacement:
The appliance is operated under the conditions specified in Clause 11 but with dry textile

material. Controls that limit the temperature during the test of Clause 11 and all self-resetting

thermal cut-outs that protect the heating elements are short-circuited simultaneously. The

test is terminated at the end of the maximum period allowed by a timer.

For condensation-type tumble dryers, the test is repeated, but with 75 % of the air outlet of

the condenser blocked. The test is then carried out again with the air outlet fully blocked.

19.9 Not applicable
Addition:
The running overload test is carried out on appliances that have overload protective devices
incorporating electronic circuits to protect the windings of the drum motor. However, the test
is not carried out if the protective device senses the winding temperature directly.
19.13 Addition:
The textile material shall not ignite and shall show no charring or glowing.
NOTE 101 Light-brown colouring of the textile material or slight emission of smoke is ignored.
19.101 The appliance is operated under the conditions specified in Clause 11 but with dry
textile material and the drum belt removed. The duration of the test is 90 min or for the
maximum period allowed by a timer.
If air circulation is likely to be prevented due to a fault condition, the test is repeated but with
the drum belt in position and with the air circulation stopped.
NOTE Care should shall to be taken to ensure that the textile material is tumbling properly by
reducing the load if necessary.
If both of these conditions are likely to occur simultaneously, the tests are combined.
19.102 Appliances that permit test probe C of IEC 61032 to gain access to spaces
containing live parts located below holes in the drum are tested for short circuit conditions.
The short circuit is applied at the most unfavourable place between live parts and between
live parts and other metal parts, if such a short circuit can be made by a pin having a
diameter of approximately 1 mm and any length up to 50 mm. The appliance is operated as

specified in Clause 11 but with dry textile material.
19.103 There shall be no risk of fire due to textile material coming into contact with a lamp
cover.
Compliance is checked by the following test.
Ten layers of cheesecloth are placed over the lamp cover. The appliance is supplied at rated
voltage with the door open until steady conditions are established. The temperature rise of
the cover shall not exceed 150 K.
20 Stability and mechanical hazards
This clause of Part 1 is applicable except as follows.

20.1 Modification:
The test with the angle of inclination increased to 15 ° is not carried out.

20.101 It shall not be possible to open the door while the appliance is operating unless an

interlock is provided that disconnects the motor before the door opening exceeds 75 mm. It

shall not be possible to start the motor while the door opening exceeds 75 mm. For

appliances with a door opening having a dimension exceeding 200 mm and a drum having a

volume exceeding 60 dm , it shall not be possible to start the motor until a separate means

which controls the movement of the drum is operated manually.

Compliance is checked by inspection, by measurement and by manual test, the appliance
being supplied at rated voltage and operating under normal operation.
If means to prevent the door opening incorporates a coil or similar component to lock the door
in the closed position, the component is energized and de-energized 6 000 times, six times a
minute or at the rate imposed by the construction of the appliance if this is lower.
The locking means and its components shall be fit for further use.
NOTE The door is opened and closed during the test if this is necessary for the mechanical operation of the
interlock.
20.102 For appliances with a door opening having a dimension exceeding 200 mm and a
drum having a volume exceeding 60 dm , it shall be possible to open the door from the inside
with a force not exceeding 70 N.
This requirement does not apply to washing machines having a drying function.
Compliance is checked by inspection, by measurement and by applying a force of 70 N
perpendicular to the plane of the door at a point furthest from the hinges.
If the appliance is supplied with a decorative door, the test is carried out with this door closed.
NOTE The force may can be applied to the outside of the door.
20.103 Appliances with horizontally hinged doors shall have adequate stability when the
open door is subjected to a load. This requirement is not applicable to built-in appliances or
fixed appliances.
Compliance is checked by the following test that is carried out with the tumble dryer placed

on a horizontal surface, even if it can be stacked on top of a washing machine.
The empty appliance is placed on a horizontal surface and a mass of 23 kg applied to the
centre of the open door. The appliance shall not tilt and the door and hinges shall not be
damaged to such an extent that compliance with this standard is impaired.
20.104 For appliances having a door on a vertical surface with an opening exceeding
200 mm and a drum having a volume exceedi
...

IEC 60335-2-11 ®
Edition 8.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-11: Particular requirements for tumble dryers

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-11: Exigences particulières pour les sèche-linge à tambour

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IEC 60335-2-11 ®
Edition 8.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –

Part 2-11: Particular requirements for tumble dryers

Appareils électrodomestiques et analogues – Sécurité –

Partie 2-11: Exigences particulières pour les sèche-linge à tambour

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.120; 97.060 ISBN 978-2-8322-6810-0

– 2 – IEC 60335-2-11:2019 © IEC 2019
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 General requirement . 10
5 General conditions for the tests . 10
6 Classification . 10
7 Marking and instructions . 10
8 Protection against access to live parts . 11
9 Starting of motor-operated appliances . 12
10 Power input and current . 12
11 Heating . 12
12 Void . 13
13 Leakage current and electric strength at operating temperature . 13
14 Transient overvoltages . 13
15 Moisture resistance . 13
16 Leakage current and electric strength . 14
17 Overload protection of transformers and associated circuits . 14
18 Endurance . 14
19 Abnormal operation . 14
20 Stability and mechanical hazards . 15
21 Mechanical strength . 17
22 Construction . 17
23 Internal wiring . 18
24 Components . 18
25 Supply connection and external flexible cords . 19
26 Terminals for external conductors . 19
27 Provision for earthing . 19
28 Screws and connections . 19
29 Clearances, creepage distances and solid insulation . 19
30 Resistance to heat and fire . 19
31 Resistance to rusting . 20
32 Radiation, toxicity and similar hazards . 20
Annexes . 21
Annex R (normative) Software evaluation . 22
Annex AA (normative) Tumble dryers that use a refrigerating system incorporating
sealed motor-compressors for carrying out the drying process . 23
Annex BB (normative) Equipment protection by type of protection "n" . 31
Bibliography . 32

Figure 101 – Probe for measuring surface temperatures . 20

Table 101 – Maximum temperature rises for accessible external surfaces under normal
operating conditions with the door closed . 13
Table 201 – Maximum temperatures for motor-compressors . 26
Table 202 – Refrigerant flammability parameters . 29

– 4 – IEC 60335-2-11:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –

Part 2-11: Particular requirements for tumble dryers

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60335-2-11 has been prepared by IEC technical committee 61:
Safety of household and similar electrical appliances.
This eighth edition cancels and replaces the seventh edition published in 2008,
Amendment 1:2012 and Amendment 2:2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the seventh
edition:
– aligns the text with IEC 60335-1, Ed 5, and its Amendments 1 and 2;
– some notes have been converted to normative text (7.12, 7.12.1, 11.3, 19.101, AA.5.2);
– more detailed test specifications have been given in 11.3 and 15.2;
– specific requirements have been added in 3.1.9, 3.6.101, 7.12, 11.7, 19.1, and Clause 22
to cover appliances with steam generators;

– specific requirements have been added in 22.108 to cover programmable electronic
circuits;
– Annex AA has been deleted, because it is covered by Part 1 and the remaining annexes
have been renumbered.
The text of this International Standard is based on the following documents:
FDIS Report on voting
61/5786/FDIS 61/5803/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 60335 series, under the general title: Household and similar
electrical appliances – Safety, can be found on the IEC website.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments. It was established on the basis of the fifth edition (2010) of that standard.
NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.
This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert that publication into the IEC standard: Safety requirements for tumble dryers.
When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies
as far as is reasonable. When this standard states "addition", "modification" or "replacement",
the relevant text in Part 1 is to be adapted accordingly.
NOTE 2 The following numbering system is used:
– subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;
– unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including
those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.
NOTE 3 The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the
associated noun are also in bold.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
NOTE 4 The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations may need a transitional period following publication of a new, amended or revised IEC publication in
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
– 6 – IEC 60335-2-11:2019 © IEC 2019
It is the recommendation of the committee that the content of this publication be adopted for implementation
nationally not earlier than 12 months or later than 36 months from the date of publication.
The following differences exist in the countries indicated below.
– 3.1.9: The textile material has different dimensions (USA).
– 6.2: Tumble dryers are not required to be IPX4 (USA).
– 7.12: Actual articles of clothing can be specified instead and warnings are required to be marked on the
appliance regarding the use of chemicals for cleaning (USA).
– 11.2: The test condition is different (USA).
– 11.7: This test is continued until steady conditions are established and different criteria are used to determine
when steady conditions are reached (USA).
– 19.4: The test is different (USA).
– 19.9: A running overload test is carried out on automatically controlled tumble dryers (USA).
– 20.102: When considering accessibility to rotating drums, the maximum drum volume is 60 dm and the
maximum door opening is 200 mm (USA).
– 20.103: This test is different (USA).
– 22.104: The test is different (USA).
– 27.1: Earthing terminals and contacts are allowed to be electrically connected to the neutral conductor of a
tumble dryer (USA).
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
INTRODUCTION
It has been assumed in the drafting of this International Standard that the execution of its
provisions is entrusted to appropriately qualified and experienced persons.
This standard recognizes the internationally accepted level of protection against hazards such
as electrical, mechanical, thermal, fire and radiation of appliances when operated as in
normal use taking into account the manufacturer's instructions. It also covers abnormal
situations that can be expected in practice and takes into account the way in which
electromagnetic phenomena can affect the safe operation of appliances.
This standard takes into account the requirements of IEC 60364 as far as possible so that
there is compatibility with the wiring rules when the appliance is connected to the supply
mains. However, national wiring rules may differ.
If an appliance within the scope of this standard also incorporates functions that are covered
by another part 2 of IEC 60335, the relevant part 2 is applied to each function separately, as
far as is reasonable. If applicable, the influence of one function on the other is taken into
account.
When a part 2 standard does not include additional requirements to cover hazards dealt with
in Part 1, Part 1 applies.
NOTE 1 This means that the technical committees responsible for the part 2 standards have determined that it is
not necessary to specify particular requirements for the appliance in question over and above the general
requirements.
This standard is a product family standard dealing with the safety of appliances and takes
precedence over horizontal and generic standards covering the same subject.
NOTE 2 Horizontal and generic standards covering a hazard are not applicable since they have been taken into
consideration when developing the general and particular requirements for the IEC 60335 series of standards. For
example, in the case of temperature requirements for surfaces on many appliances, generic standards, such as
ISO 13732-1 for hot surfaces, are not applicable in addition to Part 1 or part 2 standards.
An appliance that complies with the text of this standard will not necessarily be considered to
comply with the safety principles of the standard if, when examined and tested, it is found to
have other features which impair the level of safety covered by these requirements.
An appliance employing materials or having forms of construction differing from those detailed
in the requirements of this standard may be examined and tested according to the intent of
the requirements and, if found to be substantially equivalent, may be considered to comply
with the standard.
– 8 – IEC 60335-2-11:2019 © IEC 2019
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –

Part 2-11: Particular requirements for tumble dryers

1 Scope
This clause of Part 1 is replaced by the following.
This International Standard deals with the safety of electric tumble dryers intended for
household and similar purposes, their rated voltage being not more than 250 V for single-
phase appliances and 480 V for other appliances.
NOTE 101 This standard applies to the drying function of washing machines having a drying cycle.
This standard also deals with the safety of tumble dryers that use a refrigerating system,
incorporating sealed motor-compressors, for drying textile material. These appliances may
use flammable refrigerants. Additional requirements for these appliances are given in
Annex AA.
Appliances not intended for normal household use but which 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.
NOTE 102 Examples of such appliances are tumble dryers for communal use in blocks of flats or in launderettes.
As far as is practicable, this standard deals with the common hazards presented by
appliances that are encountered by all persons.
However, in general, it does not take into account
– persons (including children) whose
• physical, sensory or mental capabilities; or
• lack of experience and knowledge
prevents them from using the appliance safely without supervision or instruction;
– children playing with the appliance.
NOTE 103 Attention is drawn to the fact that
– for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may be
necessary;
– in many countries, additional requirements are specified by the national health authorities, the national
authorities responsible for the protection of labour, the national water supply authorities,
NOTE 104 This standard does not apply to
– 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);
– appliances incorporating steam generating devices in which steam is produced at a pressure exceeding
50 kPa.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60584-1, Thermocouples – Part 1: EMF specifications and tolerances
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1 Definitions relating to physical characteristics
Replacement:
3.1.9
normal operation
operation of the appliance under the following conditions:
The appliance is operated filled with textile material having a mass in the dry condition equal
to the maximum load stated in the instructions.
The textile material consists of pre-washed double-hemmed cotton sheets having dimensions
2 2
approximately 70 cm × 70 cm and a specific mass between 140 g/m and 175 g/m in the dry
condition. The textile material is soaked with water having a temperature of 25 °C ± 5 °C and
a mass equal to that of the textile material.
If the drying function can automatically follow the washing function in a washing machine, the
appliance is not separately loaded. The appliance is operated with the maximum quantity of
textile material stated in the instructions for the combined washing-drying cycle.
Note 101 to entry: Cotton having a water content not exceeding 10 % is considered to be in the dry condition.
Cotton conditioned for 24 h in still air, having a temperature of 20 °C ± 2 °C, a relative humidity between 60 % and
70 % and a pressure between 860 mbar and 1 060 mbar, will contain approximately 7 % water.
A steam generator intended to be filled by hand is filled according to the instructions, water
being added to maintain the steam generation.
A steam generator intended to be filled automatically is connected to the water mains.
3.5 Definitions relating to types of appliances
3.5.101
tumble dryer
appliance in which textile material is dried by tumbling in a rotating drum through which
heated air is blown
3.5.102
condensation-type tumble dryer
tumble dryer in which the air used for the drying process is dehumidified by cooling
3.6 Definitions relating to parts of an appliance
3.6.101
steam generator
device in which steam is produced at a pressure not exceeding 50 kPa and in which the
pressure drops to atmospheric pressure when the steam is not supplied
3.8 Definitions relating to miscellaneous matters
3.8.101
cool down period
final part of the tumble dryer cycle where the drum is continuously rotated with reduced
power to the heating element and with air circulation in order to reduce the possibility of
spontaneous combustion of the clothes load

– 10 – IEC 60335-2-11:2019 © IEC 2019
Note 1 to entry: Continuous rotation does not mean rotation in same direction if the intended operation is to
reverse direction in normal use.
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable.
6 Classification
This clause of Part 1 is applicable except as follows.
6.2 Addition:
Appliances shall be at least IPX4.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition:
The appliance shall be marked with symbol ISO 7000-0790 (2004-01) or with the substance of
the following:
Read the instructions
7.10 Addition:
If the off position is only indicated by letters, the word "off" shall be used.
7.12 Addition:
The instructions shall state
– the maximum mass of dry textile material in kilograms to be used in the appliance;
– that the tumble dryer is not to be used if industrial chemicals have been used for cleaning;
– that the lint trap has to be cleaned frequently, if applicable;
– that lint must not to be allowed to accumulate around the tumble dryer (not applicable for
appliances intended to be vented to the exterior of the building);
– that adequate ventilation has to be provided to avoid the back flow of gases into the room
from appliances burning other fuels, including open fires (this instruction is not required if
the tumble dryer discharges the air into the room).
If symbol ISO 7000-0790 (2004-01) is used, its meaning shall be explained.
The instructions shall include the substance of the following.
– Do not dry unwashed items in the tumble dryer.

– Items that have been soiled with substances such as cooking oil, acetone, alcohol, petrol,
kerosene, spot removers, turpentine, waxes and wax removers should be washed in hot
water with an extra amount of detergent before being dried in the tumble dryer.
– Items such as foam rubber (latex foam), shower caps, waterproof textiles, rubber backed
articles and clothes or pillows fitted with foam rubber pads should not be dried in the
tumble dryer.
– Fabric softeners, or similar products, should be used as specified by the fabric softener
instructions.
– Remove all objects from pockets such as lighters and matches.
– Fill steam generators only with liquids specified by the manufacturer.
The instructions shall include the substance of the following warning:
WARNING: Never stop a tumble dryer before the end of the drying cycle unless all items
are quickly removed and spread out so that the heat is dissipated.
The instructions for appliances for which the air temperature exceeds 55 °C during the drying
cycle, shall include the substance of the following warning:
WARNING: The appliance must not be supplied through an external switching device, such
as a timer, or connected to a circuit that is regularly switched on and off by a utility.
7.12.1 Addition:
The instructions shall state that
– for appliances with ventilation openings in the base, a carpet must not obstruct the
openings;
– exhaust air must not be discharged into a flue that is used for exhausting fumes from
appliances burning gas or other fuels (this instruction is not required if the tumble dryer
discharges the air into the room);
– the appliance must not be installed behind a lockable door, a sliding door or a door with a
hinge on the opposite side to that of the tumble dryer, in such a way that a full opening of
the tumble dryer door is restricted.
If the instructions state that the tumble dryer can be placed on top of a washing machine,
they shall state which washing machines are suitable. Instructions shall be given for the
assembly of the tumble dryer and washing machine. The instructions shall state how to
obtain any fixing attachments required, unless they are supplied with the appliance.
7.14 Addition:
The height of symbol ISO 7000-0790 (2004-01) shall be at least 15 mm.
7.15 Addition:
Symbol ISO 7000-0790 (2004-01), or the marking “Read the instructions”, shall be readily
visible when the appliance is installed as in normal use.
8 Protection against access to live parts
This clause of Part 1 is applicable.

– 12 – IEC 60335-2-11:2019 © IEC 2019
9 Starting of motor-operated appliances
This clause of Part 1 is not applicable.
10 Power input and current
This clause of Part 1 is applicable.
11 Heating
This clause of Part 1 is applicable except as follows.
11.2 Addition:
Lint traps are cleaned and then 50 % of the area of the filter is blocked.
11.3 Addition:
Where the external accessible surfaces are suitably flat and access permits, then the test
probe of Figure 101 is used to measure the temperature rises of external accessible
surfaces specified in Table 101. The probe is applied with a force of 4 N ± 1 N to the surface
in such a way that the best possible contact between the probe and the surface is ensured.
The measurement is performed after a contact period of 30 s.
The probe may be held in place using a laboratory stand clamp or similar device. Any
measuring instrument giving the same results as the probe may be used.
11.7 Replacement:
Appliances incorporating a timer, a humidity sensing control or other time-limiting control are
operated in cycles. Each cycle comprises an operating period having a duration equal to the
maximum time that can be provided by the control and a rest period of 4 min during which the
appliance is reloaded.
The test may be ended if the temperature rise of any part does not exceed the value
determined during the preceding cycle by more than 8 K.
Appliances having a combined washing-drying cycle are operated with the drying programme
resulting in the highest temperature rise.
Appliances with a steam generator are operated with that steam mode resulting in the
highest temperature rise.
Other appliances are operated continuously until steady conditions are established.
11.8 Addition:
During the test, the temperature rises are monitored continuously and shall not exceed the
values shown in Table 3 and Table 101.

Table 101 – Maximum temperature rises for accessible external
surfaces under normal operating conditions with the door closed
e
Temperature rise
K
c
Surface Surfaces of appliances situated not more than Surfaces situated more
850 mm above the floor after installation than 850 mm above the
d
floor after installation
d
Front surfaces
Other surfaces
Bare metal 38 42 42
a
Coated metal 42 49 49
Glass and ceramic 51 56 56
Plastic and plastic
58 62 62
b
coating > 0,4 mm
a
Metal is considered coated when a coating having a minimum thickness of 90 µm made by enamel or non-
substantially plastic coating is used.
b
The temperature rise limit applies also for plastic material having a metal finish of thickness less than
0,1 mm.
c
When the thickness of plastic coating does not exceed 0,4 mm, the temperature rise limits of coated metal or
glass and ceramic apply.
d
If these values are exceeded, the test is allowed to be repeated with the appliance moved away from the test
corner side wall. The test is repeated for 1 cycle.
e
Temperature rises are not measured on
– the underside of appliances intended to be used on a working surface or floor where these surfaces are
inaccessible to a 75 mm diameter probe having a hemispherical end applied with a force not exceeding
1 N;
– the rear surface of appliances where these surfaces are inaccessible to a 75 mm diameter probe having
a hemispherical end applied with a force not exceeding 1 N.

The temperature rises are measured with the door closed.
The exhaust temperature of the air from the drum, measured at the first lint filter after the air
passes the clothes load, shall be measured for the purposes of 22.105.
12 Void
13 Leakage current and electric strength at operating temperature
This clause of Part 1 is applicable except as follows.
13.2 Modification:
For stationary class I appliances, the leakage current shall not exceed 3,5 mA, or 1 mA/kW
rated power input with a limit of 5 mA, whichever is higher.
14 Transient overvoltages
This clause of Part 1 is applicable.
15 Moisture resistance
This clause of Part 1 is applicable except as follows.

– 14 – IEC 60335-2-11:2019 © IEC 2019
15.2 Modification:
The test is carried out with the drum filled with wet textile material as specified for normal
operation, the mass of the water, however, being approximately 1,5 times the mass of the dry
textile material.
Appliances intended to be connected to the water mains are operated with the outlet of the
condensation circuit blocked. The inlet valve is held open and the filling continued for 1 min
after first evidence of overflow or for 5 min after a protective device operates to stop the
flow. Doors are opened but interlocks are not forced.
For all appliances, 0,5 l of the solution is rapidly poured over the top of the appliance, so that
the spillage solution flows over the surfaces of the appliance that incorporate controls, the
controls being placed in the on position. The controls are then operated through their working
range, this operation being repeated after a period of 5 min.
The appliance shall then withstand the electric strength test of 16.3 and inspection shall show
that there is no trace of water on insulation that could result in a reduction of clearances or
creepage distances below the values specified in Clause 29.
16 Leakage current and electric strength
This clause of Part 1 is applicable except as follows.
16.2 Modification:
For stationary class I combined appliances, the leakage current shall not exceed 1 mA, or
1 mA/kW rated power input with a limit of 5 mA, whichever is higher.
17 Overload protection of transformers and associated circuits
This clause of Part 1 is applicable.
18 Endurance
This clause of Part 1 is not applicable.
19 Abnormal operation
This clause of Part 1 is applicable except as follows.
19.1 Modification:
Instead of being subjected to the tests of 19.2 and 19.3, appliances are subjected to the tests
of 19.101 and 19.102, as applicable.
Addition:
If operation without water is a more unfavourable condition for appliances connected to the
water mains, the tests are carried out with the water valve closed. This valve is not closed
after the appliance has started to operate.
The steam generator is operated without water.

19.4 Replacement:
The appliance is operated under the conditions specified in Clause 11 but with dry textile
material. Controls that limit the temperature during the test of Clause 11 and all self-resetting
thermal cut-outs that protect the heating elements are short-circuited simultaneously. The
test is terminated at the end of the maximum period allowed by a timer.
For condensation-type tumble dryers, the test is repeated, but with 75 % of the air outlet of
the condenser blocked. The test is then carried out again with the air outlet fully blocked.
19.9 Addition:
The running overload test is carried out on appliances that have overload protective devices
incorporating electronic circuits to protect the windings of the drum motor. However, the test
is not carried out if the protective device senses the winding temperature directly.
19.13 Addition:
The textile material shall not ignite and shall show no charring or glowing.
NOTE 101 Light-brown colouring of the textile material or slight emission of smoke is ignored.
19.101 The appliance is operated under the conditions specified in Clause 11 but with dry
textile material and the drum belt removed. The duration of the test is 90 min or for the
maximum period allowed by a timer.
If air circulation is likely to be prevented due to a fault condition, the test is repeated but with
the drum belt in position and with the air circulation stopped. Care shall to be taken to ensure
that the textile material is tumbling properly by reducing the load if necessary.
If both these conditions are likely to occur simultaneously, the tests are combined.
19.102 Appliances that permit test probe C of IEC 61032 to gain access to spaces
containing live parts located below holes in the drum are tested for short circuit conditions.
The short circuit is applied at the most unfavourable place between live parts and between
live parts and other metal parts, if such a short circuit can be made by a pin having a
diameter of approximately 1 mm and any length up to 50 mm. The appliance is operated as
specified in Clause 11 but with dry textile material.
19.103 There shall be no risk of fire due to textile material coming into contact with a lamp
cover.
Compliance is checked by the following test.
Ten layers of cheesecloth are placed over the lamp cover. The appliance is supplied at rated
voltage with the door open until steady conditions are established. The temperature rise of
the cover shall not exceed 150 K.
20 Stability and mechanical hazards
This clause of Part 1 is applicable except as follows.
20.1 Modification:
The test with the angle of inclination increased to 15 ° is not carried out.

– 16 – IEC 60335-2-11:2019 © IEC 2019
20.101 It shall not be possible to open the door while the appliance is operating unless an
interlock is provided that disconnects the motor before the door opening exceeds 75 mm. It
shall not be possible to start the motor while the door opening exceeds 75 mm.
Compliance is checked by inspection, by measurement and by manual test, the appliance
being supplied at rated voltage and operating under normal operation.
If means to prevent the door opening incorporates a coil or similar component to lock the door
in the closed position, the component is energized and de-energized 6 000 times, six times a
minute or at the rate imposed by the construction of the appliance if this is lower.
The locking means and its components shall be fit for further use.
NOTE The door is opened and closed during the test if this is necessary for the mechanical operation of the
interlock.
20.102 For appliances with a door opening having a dimension exceeding 200 mm and a
drum having a volume exceeding 60 dm , it shall be possible to open the door from the inside
with a force not exceeding 70 N.
Compliance is checked by inspection, by measurement and by applying a force of 70 N
perpendicular to the plane of the door at a point furthest from the hinges.
If the appliance is supplied with a decorative door, the test is carried out with this door closed.
NOTE The force can be applied to the outside of the door.
20.103 Appliances with horizontally hinged doors shall have adequate stability when the
open door is subjected to a load. This requirement is not applicable to built-in appliances or
fixed appliances.
Compliance is checked by the following test that is carried out with the tumble dryer placed
on a horizontal surface, even if it can be stacked on top of a washing machine.
The empty appliance is placed on a horizontal surface and a mass of 23 kg applied to the
centre of the open door. The appliance shall not tilt and the door and hinges shall not be
damaged to such an extent that compliance with this standard is impaired.
20.104 For appliances having a door on a vertical surface with an opening exceeding
200 mm and a drum having a volume exceeding 60 dm , it shall not be possible to start the
drum motor after closing the door until a separate means which controls the movement of the
drum is operated manually.
NOTE The volume can be calculated from the maximum depth and the maximum inner diameter of the drum.
Compliance is checked by the following test.
The appliance is supplied at rated voltage, and the door is opened and then closed.
If compliance relies on the operation of an electronic circuit, the test is repeated under the
foll
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