SIST EN 50570:2014

SLOVENSKI STANDARD
SIST EN 50570:2014
01-januar-2014
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Household and similar electrical appliances - Safety - Particular requirements for
commercial electric tumble dryers
Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Besondere
Anforderungen für elektrische Trommeltrockner für den gewerblichen Gebrauch
Appareils électrodomestiques et analogues - Sécurité - Règles particulières pour les
sèche-linge à tambour à usage collectif
Ta slovenski standard je istoveten z: EN 50570:2013
ICS:
97.060 Aparati za nego perila Laundry appliances
SIST EN 50570:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50570:2014

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SIST EN 50570:2014

EUROPEAN STANDARD
EN 50570

NORME EUROPÉENNE
November 2013
EUROPÄISCHE NORM

ICS 97.060


English version


Household and similar electrical appliances -
Safety -
Particular requirements for commercial electric tumble dryers



Appareils électrodomestiques et Sicherheit elektrischer Geräte für den
analogues - Hausgebrauch und ähnliche Zwecke -
Sécurité - Besondere Anforderungen für elektrische
Règles particulières pour les sèche-linge à Trommeltrockner für den gewerblichen
tambour à usage collectif Gebrauch




This European Standard was approved by CENELEC on 2013-06-10. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the CEN-CENELEC Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50570:2013 E

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Contents
Foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General requirement . 8
5 General conditions for the tests . 8
6 Classification . 8
7 Marking and instructions . 8
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 . 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 . 15
20 Stability and mechanical hazards . 16
21 Mechanical strength . 17
22 Construction . 18
23 Internal wiring . 20
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 . 21
29 Clearances, creepage distances and solid insulation . 21
30 Resistance to heat and fire . 21
31 Resistance to rusting . 21
32 Radiation, toxicity and similar hazards . 21
Annex AA (normative) Rinsing agent . 23
Annex BB (normative) Appliances that use a refrigerating system incorporating sealed motor-
compressors for carrying out the drying process . 24
Annex CC (normative) Non-sparking “n” electrical apparatus . 31
Annex DD (normative) Emission of acoustical noise . 32
Annex ZE (informative) Specific additional requirements for appliances and machines intended for
commercial use . 34

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Annex ZZ (informative) Coverage of Essential Requirements of EU Directives. 35
Bibliography . 36
Figures
Figure 101  Probe for measuring surface temperatures . 22
Figure 201  Symbol: Caution: Risk of fire. 26
Tables
Table 3  Maximum normal temperature rises . 13
Table AA.1  Rinsing agent . 23
Table 201  Maximum temperatures for motor-compressors . 26
Table 202  Refrigerant flammability parameters . 29

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Foreword
This document (EN 50570:2013) has been prepared by CLC/TC 61, "Safety of household and similar
electrical appliances".


The following dates are fixed:

• latest date by which this document has to be implemented (dop) 2014-06-10
at national level by publication of an identical national
standard or by endorsement
(dow) 2016-06-10
• latest date by which the national standards conflicting with
this document have to be withdrawn
EN 50570:2013 is to be read in conjunction with EN 60335-1:2012 and its amendments, which is referred to
in this text as “Part 1”. This standard supplements or modifies the corresponding clauses of Part 1 as
indicated in the text.
NOTE 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.
This document has been prepared under a mandate given to CENELEC by the European Commission and
the European Free Trade Association, and supports essential requirements of EU Directive(s).

For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this
document.
____________

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Introduction
This European Standard has been prepared to provide a means of conforming to essential safety
requirements of the Machinery Directive 2006/42/EC. Other requirements and other EU Directives may be
applicable to the machines within the scope of this standard.

This standard is a product family standard dealing with the safety of commercial electric tumble dryers and
takes precedence over horizontal and generic standards covering the same subject.

This standard recognises the level of protection against hazards such as electrical, mechanical, thermal, fire
and radiation of commercial electric tumble dryers when operated as in normal use taking into account the
manufacturer's instructions. It also covers any reasonably foreseeable misuse of the machinery and takes
into account the way in which electromagnetic phenomena can affect the safe operation of commercial
electric tumble dryers.

A commercial electric tumble dryer 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 that impair the level of safety covered by these requirements.

This standard takes into account the requirements of HD 60364-1 as far as possible so that there is
compatibility with the wiring rules when the machinery is connected to the supply mains. However, national
wiring rules may differ.

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1 Scope
Replace this clause of Part 1 by the following:
This European Standard deals with the safety of electrical operated tumble dryers intended to be used by
trained users in i.e. hotels, hospitals, factories, in light industry and on farms. It also covers tumble dryers
which are declared for commercial use in public areas and operated by lay persons e.g. in laundrettes,
communal laundry rooms. The rated voltage shall not be more than 250 V for single phase and 480 V for
others.
This standard also deals with the safety of tumble dryers that use a refrigerating system, incorporating
sealed motor-compressors, for drying textile material. These machines may use flammable refrigerants.
Additional requirements for these machines are given in Annex BB.
This standard also covers tumble dryers making use of other energy sources. It does not cover
requirements for these other energy sources. However the influence of these other energy sources on the
machines is covered.
This standard deals with the common hazards presented by tumble dryers that are encountered by all
persons. However, in general, it does not take into account:
a) persons (including children) whose:
1) physical, sensory or mental capabilities, or
2) lack of experience and knowledge
prevents them from using the tumble dryers safely without supervision or instruction;
b) children playing with the tumble dryer.
Attention is drawn to the fact that:
– for commercial electric tumble dryers 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.
This European Standard does not apply to:
c) industrial laundry machinery (EN ISO 10472-4),
d) tumble dryers intended to be used in locations where special conditions prevail, such as the
presence of a corrosive or explosive atmosphere (dust, vapour or gas).
For the purpose of this standard, the term “appliance” as used in Part 1 is to be read as “tumble dryers
intended for commercial use”.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
EN 60204-1:2006/A1:2009, Safety of machinery  Electrical equipment of machines  Part 1: General
requirements (IEC 60204-1:2005/A1:2008)
EN 60335-1:2012, Household and similar electrical appliances  Safety  Part 1: General requirements
(IEC 60335-1:2010, modified)
EN 60704-1:2010, Household and similar electrical appliances  Test code for the determination of airborne
acoustical noise  Part 1: General requirements (IEC 60704-1:2010)
EN 60730-2-12:2006, Automatic electrical controls for household and similar use  Part 2-12: Particular
requirements for electrically operated door locks (IEC 60730-2-12:2005, modified)
EN ISO 3744, Acoustics  Determination of sound power levels and sound energy levels of noise sources

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using sound pressure  Engineering methods for an essentially free field over a reflecting plane (ISO 3744)
EN ISO 3746, Acoustics  Determination of sound power levels and sound energy levels of noise sources
using sound pressure  Survey method using an enveloping measurement surface over a reflecting plane
(ISO 3746)
EN ISO 4871, Acoustics  Declaration and verification of noise emission values of machinery and
equipment (ISO 4871)
EN ISO 9614-2:1996, Acoustics  Determination of sound power levels of noise sources using sound
intensity  Part 2: Measurement by scanning (ISO 9614-2:1996)
EN ISO 11201, Acoustics  Noise emitted by machinery and equipment  Determination of emission sound
pressure levels at a work station and at other specified positions in an essentially free field over a reflecting
plane with negligible environmental corrections (ISO 11201)
EN ISO 11203, Acoustics  Noise emitted by machinery and equipment  Determination of emission sound
pressure levels at a work station and at other specified positions from the sound power level (ISO 11203)
EN ISO 11688-1, Acoustics  Recommended practice for the design of low-noise machinery and equipment
 Part 1: Planning (ISO/TR 11688-1)
Replace the reference to EN 62233 by:
EN 62233:2008, Measurement methods for electromagnetic fields of household appliances and similar
apparatus with regard to human exposure (IEC 62233:2005, modified)

3 Terms and definitions
This clause of Part 1 is applicable except as follows:
3.1.9
normal operation

Addition:

The appliance is 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 approximately
2 2
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.
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.
Addition:
3.1.101
tumble dryer
appliance in which textile material is dried by tumbling in a rotating drum through which heated air is blown
3.1.102
condensation-type tumble dryer
appliance in which the air used for the drying process is dehumidified by cooling
3.1.103
guard
part of the appliance specifically designed to provide protection by means of a physical barrier

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3.1.104
operator
person or persons installing, operating, adjusting, maintaining, cleaning, repairing or moving appliances
3.1.105
workstation
place, as defined in the instructions of the relevant appliance, where the operator has to be in attendance to
operate, or to adjust, or to control the appliance
Note 1 to entry: Example is the location where the operator loads the appliance.
3.1.106
public areas
area in which the general public including children can enter
Note 1 to entry: Examples are laundrettes, communal laundry rooms.
3.1.107
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 except as follows:
Replace the first paragraph with the following:
Appliances shall be constructed so that in normal use they function safely so as to cause no danger to
persons or surroundings during normal use, even in the event of carelessness, and during installation,
adjusting, maintenance, cleaning, repairing or transportation.
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:
Appliances shall be marked in addition with:
– business name, and full address of the manufacturer and, where applicable, his authorised
representative,
– model or type reference, serial number if any and production year,
NOTE 101 Production year is the year when the production process is completed. The production year can be a part of the
serial number.
– designation of the appliance,
NOTE 102 The designation may be a combination of letters and/or numbers and shall enable to identify the appliance as
specified in the instructions.

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– the water supply pressure or range of pressures, in kilopascals (kPa), for machines intended to be
connected to a water supply, unless this is indicated in the instruction sheet,
– the maximum permissible steam supply pressure, in kilopascals (kPa), unless this is indicated in the
instruction sheet,
– the maximum permissible water and steam supply temperatures in degrees Celsius, unless this is
indicated in the instruction sheet.
The appliance shall be marked with symbol ISO 7000-0790 (2004-01) or with the substance of the following:
Read the instructions
d
When the provisions of footnote to Table 101 apply, the appliance shall be marked with
– the substance of “CAUTION: Hot surface”, or
– symbol IEC 60417-5041(2002-10).
The warning label shall be put on the surface of the appliance having the highest temperature and shall be
visible during operation.
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
Add the following text before the second paragraph:
The front cover of the instructions shall include the substance of the following warning:
CAUTION: Read the instructions before using the appliance.
This wording may be replaced by symbols ISO 7000-0434 and ISO 7000-0790.
Replace the first sentence in the requirement of Part 1 with the following
Instructions shall be provided with the appliance so that the appliance can be used safely.
Addition:
If symbols IEC 60417-5041 (2002-10), ISO 7000-0434 and ISO 7000-0790 are used on the appliance or in
the instructions, their meaning shall be explained.
The instructions shall contain at least the following information:
– business name and full address of the manufacturer and, where applicable, his authorised
representative;
– model or type reference of the appliance as marked on the appliance itself, except for the serial number;
– designation of the appliance together with its explanation in case it is given by a combination of letters
and/or numbers; the designation shall enable the identification of the appliance as specified in the
instructions;
– general description of the appliance, when needed due to the complexity of the appliance;
– specific precautions if required during installation, operation, adjusting, user maintenance, cleaning,
repairing or moving;
– when needed drawings, diagrams, descriptions and explanations necessary for the safe use and user
maintenance of the appliance.

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– maximum mass of dry textile material in kilograms to be used in the appliance;
– that appliance is not be used if industrial chemicals have been used for cleaning;
– that the lint trap has to be cleaned frequently, if applicable;
– that lint shall not to be allowed to accumulate around the appliance (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 appliance discharges the air into the room.
- possible reasonably foreseeable misuse and, whenever relevant, a warning against the effects it may
have on the safe use of the appliance
The instructions shall include the substance of the following:
– do not dry unwashed items in the appliance;
– 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 appliance;
– 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 appliance;
– fabric softeners, or similar products, should be used as specified by the fabric softener instructions;
– the final part of the drying 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.
The instructions shall include the substance of the following warning:
WARNING: Never stop the appliance before the end of the drying cycle unless all items are quickly
removed and spread out so that the heat is dissipated.
The manufactures shall declare if the appliance is also intended to be used in public areas. If the appliance
is not suitable for use in public areas the instruction shall include the substance of the following warning:
CAUTION  This appliance shall not be installed where the public has access.
The words ‘Original instructions’ shall appear on the language version(s) verified by the manufacturer or by
the authorised representative.
When a translation of the original instructions has been provided by a person introducing the appliance on
the market; the meaning of the sentence ‘Translation of the original instructions’ has to appear in the relevant
instructions delivered with the appliance.
The instructions needed for maintenance/service to be done by specialised personnel, mandated by the
manufacturer or the authorised representative, and may be supplied in only one Community language which
the specialised personnel understand.
The instructions shall indicate the type and frequency of inspections and maintenance required for safe
operation including the preventive maintenance measures.
7.12.1 Addition:
The installation instructions shall state
– for appliances with ventilation openings in the base, that a carpet or similar shall not obstruct the
openings,
– that exhaust air shall not be discharged into a flue which is used for exhausting fumes from appliances
burning gas or other fuels,
NOTE 101 This instruction is not required if the appliance discharges the air into the room.
– that the appliance shall not be installed behind a lockable door, a sliding door or a door with a hinge on
the opposite side to that of the appliance, in such a way that a full opening of the appliance door is
restricted.

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If the installation instructions state that the appliance 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 appliance and
washing machine. The instructions shall state how to obtain any fixing attachments required, unless they are
supplied with the appliance.
7.12.101 Specific instructions shall be given, when necessary, as follows:
– on use, transportation, assembly, dismantling when out of service, testing or foreseeable
breakdowns, if these operations have consequences on stability of the appliance in order to avoid
overturning, falling or uncontrolled movements of the appliance or of its component parts. The
instructions needed for the safe transportation of the packed appliance , should be stated on the
package or should be delivered together with the package;

– on how to maintain adequate mechanical stability when in use, during transportation, assembly,
dismantling, scrapping and any other action involving the appliance;

– on the operating method to be followed in the event of accident or breakdown; if a blockage is likely
to occur, the operating method to safely unblock the appliance.
Compliance is checked by inspection.
7.12.102 Information shall be given that only authorised spare parts have to be used in the event of
failure.
Compliance is checked by inspection.
7.12.103 The instructions shall include
...