IEC 60335-2-89:2019
(Main)Household and similar electrical appliances - Safety - Part 2-89: Particular requirements for commercial refrigerating appliances and ice-makers with an incorporated or remote refrigerant unit or motor-compressor
Household and similar electrical appliances - Safety - Part 2-89: Particular requirements for commercial refrigerating appliances and ice-makers with an incorporated or remote refrigerant unit or motor-compressor
IEC 60335-2-89:2019 specifies safety requirements for electrically operated commercial refrigerating appliances and ice-makers that have an incorporated motor-compressor or that are supplied in two units for assembly as a single appliance in accordance with the instructions (split system).
Examples of appliances that are within the scope of this standard are
- refrigerated display and storage cabinets;
- refrigerated trolley cabinets;
- service counters and self-service counters;
- blast chillers and blast freezers;
- commercial ice-makers.
As far as is practicable, this standard deals with the common hazards presented by these types of appliances including those that use flammable refrigerants and appliances employing R 744 refrigerant.
This International Standard is not applicable to appliances with a mass of flammable refrigerant exceeding the limits specified in 22.110 or to appliances with that use refrigerants with a toxicity classification of B according to ISO 817.
It does not cover those features of construction and operation of refrigerating appliances that are dealt with in ISO standards.
Attention is drawn to the fact that
- for appliances intended to be used in vehicles or aboard ships or aircraft, additional requirements can be necessary;
- in many countries, additional requirements are specified by national health authorities, the national authorities responsible for the protection of labour, the national water supply authorities and similar authorities.
This standard does not apply to
- appliances using flammable refrigerant in transcritical refrigeration systems;
- domestic refrigerating appliances (IEC 60335-2-24);
- split systems having a refrigerant charge of flammable refrigerant exceeding 150 g in any refrigerating circuit;
- industrial refrigerating systems;
- motor-compressors (IEC 60335-2-34);
- commercial dispensing appliances and vending machines (IEC 60335-2-75);
- commercial ice-cream appliances;
- cold temperature rooms;
- multiple refrigerated chambers with a remote motor-compressor.
This third edition cancels and replaces the second edition published in 2010, 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 previous edition:
- the text has been aligned with Ed 5.2 of Part 1;
- some notes have been deleted or converted to normative text (4, 5.2, 7.6, 22.111, 22.111.1);
- some subclauses have been renumbered (22.103, 22.104, 22.105, 22.106, 22.107, 22.109, 22.110, 22.111, 22.112, 22.113, 22.114, 22.115);
- requirements for commercial ice-makers have been added (5.7, 5.101, 7.1, 11.8, 19.102);
- installation of appliances with a remote refrigerant unit or motor-compressor has been clarified (5.10, 11.2);
- installation instructions for appliances with a remote refrigerant unit employing R-744 refrigerant in a transcritical refrigeration system have been added (7.12.1);
- a pressure test for appliances employing R-744 refrigerant has been added (22.7);
- additional refrigerants have been added to Table 102 and it has been updated to reference only ISO 817 and ISO 5149-1 data;
- additional requirements for appliances with a refrigerant charge exceeding 150 g of flammable refrigerant within each refrigerating circuit have been added (7.1, 21.103, 22.108, 22.110, 22.116, 22.117, 22.118, 22.119, 22.120, 22.121, Annex CC);
- Annex AA has been modified to cover motors that are supplied at a voltage that is different from the rated voltage of the appliance;
- Annex BB has been updated to align with the latest edition of IEC 60079-15.
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.
The contents of the corrigendum 1 of September 2019, corrigendum 2 of August 2021 and corrigendum 3 of September 2023 have been included in thi
Appareils électrodomestiques et analogues - Sécurité - Partie 2-89: Exigences particulières pour les appareils de réfrigération et fabriques de glace à usage commercial avec une unité de fluide frigorigène ou un motocompresseur incorporés ou à distance
L'IEC 60335-2-89:2019 spécifie des exigences de sécurité concernant les appareils de réfrigération électriques et les fabriques de glace à usage commercial qui ont un motocompresseur incorporé ou qui sont fournis sous forme de deux unités en vue d'un assemblage en un seul appareil conformément aux instructions (système split).
Exemples d'appareils relevant du domaine d'application de la présente norme
- meubles frigorifiques de vente et de stockage;
- chariots roulants réfrigérés;
- comptoirs de service et comptoirs de self-service;
- refroidisseurs à jet d'air et congélateurs à jet d'air;
- fabriques de glace à usage commercial.
Dans la mesure où la pratique le permet, la présente norme traite des dangers courants présentés par ces types d'appareils, y compris ceux qui utilisent des fluides frigorigènes inflammables et les appareils utilisant le fluide frigorigène R 744.
La présente Norme internationale n'est pas applicable aux appareils dont la masse de fluide frigorigène inflammable est supérieure aux limites spécifiées en 22.110, ou aux appareils qui utilisent des fluides frigorigènes de classification de toxicité B selon l'ISO 817.
Elle ne traite pas des caractéristiques de construction et de fonctionnement des appareils de réfrigération qui font l'objet de normes ISO.
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 complémentaires sont spécifiées par les organismes nationaux de la santé, par les organismes nationaux responsables de la protection des travailleurs, par les organismes nationaux responsables de l'alimentation en eau et par des organismes similaires.
La présente norme ne s'applique pas aux
- appareils utilisant des fluides frigorigènes inflammables dans des systèmes de réfrigération transcritiques;
- appareils de réfrigération à usage domestique (IEC 60335-2-24);
- systèmes split ayant une charge de fluide frigorigène inflammable dépassant 150 g dans tout circuit de réfrigération;
- systèmes de réfrigération industriels;
- motocompresseurs (IEC 60335-2-34);
- distributeurs commerciaux avec ou sans moyen de paiement (IEC 60335-2-75);
- sorbetières à usage commercial;
- chambres froides;
- chambres réfrigérées multiples à motocompresseur à distance.
Cette troisième édition annule et remplace la deuxième édition parue en 2010, son Amendement 1:2012 et son Amendement 2:2015. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- le texte a été aligné sur l'Édition 5.2 de la Partie 1;
- certaines notes ont été supprimées ou converties en texte normatif (4, 5.2, 7.6, 22.111, 22.111.1);
- certains paragraphes ont été renumérotés (22.103, 22.104, 22.105, 22.106, 22.107, 22.109, 22.110, 22.111, 22.112, 22.113, 22.114, 22.115);
- des exigences concernant les fabriques de glace à usage commercial ont été ajoutées (5.7, 5.101, 7.1, 11.8, 19.102);
- l'installation des appareils avec une unité de fluide frigorigène ou un motocompresseur à distance a été clarifiée (5.10, 11.2);
- des instructions d'installation des appareils avec une unité de fluide frigorigène à distance utilisant du R-744 dans un système de réfrigération transcritique ont été ajoutées (7.12.1);
- un essai de pression pour les appareils utilisant du fluide frigorigène R-744 a été ajouté (22.7);
- des fluides frigorigènes supplémentaires ont été ajoutés au Tableau 102, qui a été mis à jour et ne référence plus que les données de l'ISO 817 et de l'ISO 5149-1;
- des exigences complémentaires ont été ajoutées concernant les appareils dont la charge frigorigène est supérieure à 150 g de fluide frigorigène inflammable dans chaque circuit de réfrigération (7.1, 21.103, 22.108, 22.110, 22.116, 22.117, 22.118, 22.119, 22.120, 22.121, Annexe CC);
- l'A
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Standards Content (Sample)
IEC 60335-2-89 ®
Edition 3.0 2019-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-89: Particular requirements for commercial refrigerating appliances and
ice-makers with an incorporated or remote refrigerant unit or motor-compressor
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-89: Exigences particulières pour les appareils de réfrigération et
fabriques de glace à usage commercial avec une unité de fluide frigorigène ou
un motocompresseur incorporés ou à distance
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IEC 60335-2-89 ®
Edition 3.0 2019-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-89: Particular requirements for commercial refrigerating appliances and
ice-makers with an incorporated or remote refrigerant unit or motor-compressor
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-89: Exigences particulières pour les appareils de réfrigération et
fabriques de glace à usage commercial avec une unité de fluide frigorigène ou
un motocompresseur incorporés ou à distance
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.130.20 ISBN 978-2-8322-6952-7
– 2 – IEC 60335-2-89:2019 © IEC 2019
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
4 General requirement . 12
5 General conditions for the tests . 12
6 Classification . 13
7 Marking and instructions . 14
8 Protection against access to live parts . 18
9 Starting of motor-operated appliances . 18
10 Power input and current . 18
11 Heating . 19
12 Void . 21
13 Leakage current and electric strength at operating temperature . 21
14 Transient overvoltages . 21
15 Moisture resistance . 21
16 Leakage current and electric strength . 22
17 Overload protection of transformers and associated circuits . 22
18 Endurance . 22
19 Abnormal operation . 22
20 Stability and mechanical hazards . 24
21 Mechanical strength . 24
22 Construction . 26
23 Internal wiring . 37
24 Components . 38
25 Supply connection and external flexible cords . 39
26 Terminals for external conductors . 40
27 Provision for earthing . 40
28 Screws and connections . 40
29 Clearances, creepage distances and solid insulation . 40
30 Resistance to heat and fire . 40
31 Resistance to rusting . 41
32 Radiation, toxicity and similar hazards . 41
Annexes . 44
Annex C (normative) Ageing test on motors . 45
Annex D (normative) Thermal motor protectors . 46
Annex P (informative) Guidance for the application of this standard to appliances used
in tropical climates . 47
Annex R (normative) Software evaluation . 48
Annex AA (normative) Locked-rotor test of fan motors . 49
Annex BB (normative) Non-sparking "n" electrical apparatus . 51
Annex CC (normative) Test method for determining gas concentration beyond the
boundary of the appliance . 52
Bibliography . 57
Figure 101 – Apparatus for spillage test . 42
Figure 102 – Scratching tool tip details . 43
Figure AA.1 – Supply circuit for locked-rotor test of a single-phase fan motor . 50
Figure CC.1 – Schematic illustration of the refrigerant concentration sampling points . 56
Table 101 – Maximum temperatures for motor-compressors . 20
Table 102 – Refrigerant flammability parameters . 36
Table CC.1 – Relevant properties and mass flux for selected flammable refrigerants . 54
– 4 – IEC 60335-2-89:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-89: Particular requirements for commercial refrigerating
appliances and ice-makers with an incorporated or
remote refrigerant unit or motor-compressor
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-
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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
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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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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.
This part of International Standard IEC 60335 has been prepared by subcommittee 61C:
Household appliances for refrigeration, of IEC technical committee 61: Safety of household
and similar electrical appliances.
This third edition cancels and replaces the second edition published in 2010,
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 previous
edition:
– the text has been aligned with Ed 5.2 of Part 1;
– some notes have been deleted or converted to normative text (4, 5.2, 7.6, 22.111,
22.111.1);
– some subclauses have been renumbered (22.103, 22.104, 22.105, 22.106, 22.107, 22.109,
22.110, 22.111, 22.112, 22.113, 22.114, 22.115);
– requirements for commercial ice-makers have been added (5.7, 5.101, 7.1, 11.8, 19.102);
– installation of appliances with a remote refrigerant unit or motor-compressor has been
clarified (5.10, 11.2);
– installation instructions for appliances with a remote refrigerant unit employing R-744
refrigerant in a transcritical refrigeration system have been added (7.12.1);
– a pressure test for appliances employing R-744 refrigerant has been added (22.7);
– additional refrigerants have been added to Table 102 and it has been updated to reference
only ISO 817 and ISO 5149-1 data;
– additional requirements for appliances with a refrigerant charge exceeding 150 g of
flammable refrigerant within each refrigerating circuit have been added (7.1, 21.103,
22.108, 22.110, 22.116, 22.117, 22.118, 22.119, 22.120, 22.121, Annex CC);
– Annex AA has been modified to cover motors that are supplied at a voltage that is
different from the rated voltage of the appliance;
– Annex BB has been updated to align with the latest edition of IEC 60079-15.
The text of this International Standard is based on the following documents:
FDIS Report on voting
61C/792/FDIS 61C/796A/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 commercial
refrigerating appliances with an incorporated or remote refrigerant unit or compressor.
Where a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies
as far as is reasonable. Where 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 60335-2-89:2019 © 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 contents of the corrigendum of September 2019 have been included in this copy.
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 60335-2-89:2019 © IEC 2019
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-89: Particular requirements for commercial refrigerating
appliances and ice-makers with an incorporated or
remote refrigerant unit or motor-compressor
1 Scope
This clause of Part 1 is replaced by the following.
This part of IEC 60335 specifies safety requirements for electrically operated commercial
refrigerating appliances and ice-makers that have an incorporated motor-compressor or that
are supplied in two units for assembly as a single appliance in accordance with the
instructions (split system).
NOTE 101 Examples of appliances that are within the scope of this standard are
– refrigerated display and storage cabinets;
– refrigerated trolley cabinets;
– service counters and self-service counters;
– blast chillers and blast freezers;
– commercial ice-makers.
As far as is practicable, this standard deals with the common hazards presented by these
types of appliances including those that use flammable refrigerants and appliances
employing R-744 refrigerant.
This International Standard is not applicable to appliances with a mass of flammable
refrigerant exceeding the limits specified in 22.110 or to appliances with that use refrigerants
with a toxicity classification of B according to ISO 817.
It does not cover those features of construction and operation of refrigerating appliances that
are dealt with in ISO standards.
NOTE 102 Attention is drawn to the fact that
– for appliances intended to be used in vehicles or aboard ships or aircraft, additional requirements can be
necessary;
– in many countries, additional requirements are specified by national health authorities, the national authorities
responsible for the protection of labour, the national water supply authorities and similar authorities.
NOTE 103 This standard does not apply to
– appliances using flammable refrigerant in transcritical refrigeration systems;
– domestic refrigerating appliances (IEC 60335-2-24);
– split systems having a refrigerant charge of flammable refrigerant exceeding 150 g in any refrigerating
circuit;
– industrial refrigerating systems;
– motor-compressors (IEC 60335-2-34);
– commercial dispensing appliances and vending machines (IEC 60335-2-75);
– commercial ice-cream appliances;
– cold temperature rooms;
– multiple refrigerated chambers with a remote motor-compressor.
2 Normative references
This clause of Part 1 is applicable except as follows:
Addition:
IEC 60079-7:2015, Explosive atmospheres – Part 7: Equipment protection by increased
safety "e"
IEC 60079-7:2015/AMD1:2017 ,
IEC 60079-15:2017, Explosive atmospheres – Part 15: Equipment protection by type of
protection "n"
IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance
requirements of detectors for flammable gases
IEC 60335-2-34:2012, Household and similar electrical appliances – Safety – Part 2-34:
Particular requirements for motor-compressors
IEC 60335-2-34/AMD1:2015
IEC 60335-2-34/AMD2:2016
IEC 60730-2-6, Automatic electrical controls – Part 2-6: Particular requirements for automatic
electrical pressure sensing controls including mechanical requirements
ISO 817:2014, Refrigerants – Designation and safety classification
ISO 817:2014/AMD1:2017
ISO 4126-2:2018, Safety devices for protection against excessive pressure – Bursting disc
safety devices
ISO 5149-1:2014, Refrigerating systems and heat pumps – Safety and environmental
requirements – Part 1: Definitions, classification and selection criteria
ISO 5149-1:2014/AMD1:2015
ISO 7010, Graphical symbols – Safety colours and safety signs – Registered safety signs
ISO 14903, Refrigerating systems and heat pumps – Qualification of tightness of components
and joints
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1 Definitions relating to physical characteristics
3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions:
Appliances are operated at an ambient temperature in accordance with 5.7, empty, with doors
or lids closed, or roller blinds closed or open, whichever is the more unfavourable. User
adjustable temperature control devices are short-circuited or otherwise rendered inoperative.
_____________
1 There exists a consolidated edition 5.1 (2017) that includes Edition 5 and its Amendment 1.
2 There exists a consolidated edition 5.2 (2016) that includes Edition 5 and its Amendment 1 and Amendment 2.
– 10 – IEC 60335-2-89:2019 © IEC 2019
Devices that are switched, by dew-point controls or clocks, are switched on or off, whichever
is the more unfavourable.
For appliances connected to a water supply, the water other than cooling water, is at a
temperature of 15 °C ± 2 °C. The cooling water is at the maximum temperature specified in
the instructions.
3.1.101
design pressure
gauge pressure that has been assigned to the high-pressure side of a transcritical
refrigeration system
Note 1 to entry: The design pressure assigned should take into account pressures that could be expected during
transportation of the transcritical refrigeration system.
3.1.102
refrigerant charge
mass of refrigerant within a refrigerating circuit
3.5 Definitions relating to types of appliances
3.5.101
refrigerated display and storage cabinet
cabinet which displays or stores beverages or chilled or frozen foodstuff placed therein and
which is cooled by a refrigerant unit
3.5.102
ice-maker
appliance in which ice is made by freezing water by a device consuming electrical energy
Note 1 to entry: The appliance may be provided with a compartment for storing the ice.
3.6 Definitions relating to parts of an appliance
3.6.101
ancillary heating element
heating device which performs an auxiliary function, such as a defrost heater, door heater or
anti-condensation heater
3.6.102
free space
space with a volume exceeding 60 l in which a child can be entrapped and which is accessible
after opening any door, lid or drawer and removing any detachable internal part, including
shelves, containers or removable drawers which are themselves only accessible after opening
any door or lid
Note 1 to entry: In calculating the volume, a space with any single dimension not exceeding 150 mm or any two
orthogonal dimensions each of which do not exceed 200 mm is ignored.
3.6.103
gas cooler
heat exchanger in which, after compression, the refrigerant is cooled down, by transferring
heat to an external cooling medium, without changing state
Note 1 to entry: A gas cooler is normally used in transcritical refrigeration systems.
3.6.104
refrigerating circuit
combination of interconnected refrigerant-containing parts constituting one closed circuit in
which the refrigerant is circulated for the purpose of extracting and delivering heat
3.6.105
refrigerant unit
factory assembled unit for performing part of the refrigeration cycle (compressing gas,
condensation or gas cooling) comprising of one or more refrigerant compressors with motors,
condensers or gas coolers, liquid receivers, interconnection pipe work and ancillary
equipment, all mounted on a common base
3.6.106
transcritical refrigeration system
refrigeration system where the pressure in the high-pressure side is above the pressure
where the vapour and liquid states of the refrigerant can coexist in thermodynamic equilibrium
3.6.107
hermetically sealed system
system in which all refrigerant containing parts are sealed by welding, brazing or a similar
permanent connection
3.6.108
critical point
point in a refrigerating circuit were flammable refrigerant may leak
Note 1 to entry: The following are considered to be critical points:
– interconnecting joints between parts of the refrigerating circuit;
– pipes with a bend radius, measured along the centre line, of less than 2,5 times the external pipe diameter.
Note 2 to entry: The following are not considered to be critical points:
– pipes with a bend radius, measured along the centre line, equal to or greater than 2,5 times the external pipe
diameter;
– welded telescopic joints of the motor-compressor;
– welding of the pipes through the motor-compressor housing;
– welding of hermetic glass to metal seals (fusite).
3.7 Definitions relating to safety components
3.7.101
bursting disc
disc or foil which bursts at a predetermined pressure to reduce a pressure in a refrigeration
system
3.7.102
pressure relief device
pressure sensing device, intended to reduce pressure automatically when pressures within
the refrigeration system exceed the setting pressure of the device during abnormal operation
3.8 Definitions relating to miscellaneous matters
3.8.101
flammable refrigerant
refrigerant with a flammability classification of Class 2L, Class 2 or Class 3 in accordance with
ISO 817
Note 1 to entry: For refrigerant blends which have more than one flammability classification, the most
unfavourable classification is taken for the purposes of this definition.
3.8.102
qualified person
person having the appropriate technical training and experience necessary to be aware of
hazards to which he or she is exposed in performing a task and of measures necessary to
minimize the danger to themselves or other persons
– 12 – IEC 60335-2-89:2019 © IEC 2019
4 General requirement
This clause of Part 1 is applicable except as follows.
Addition:
NOTE 101 The use of flammable refrigerants involves some additional hazards that are not associated with
appliances which use non-flammable refrigerants.
This standard addresses the hazard due to ignition of leaked flammable refrigerant by potential ignition sources
associated with the appliance.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.2 Addition:
At least one additional specially prepared sample is required for the tests of 22.112.
Unless the motor-compressor complies with IEC 60335-2-34, at least one additional specially
prepared sample is required for the tests of 22.109.
Unless the motor-compressor complies with IEC 60335-2-34, at least one additional specially
prepared sample is required for the test of 19.1.
At least one additional sample of the fan motor, thermal motor protector combination may be
required for the test of 19.1.
The tests of 22.7 and 22.108 may be performed on separate samples.
Due to the potentially hazardous nature of the tests of 22.111, 22.112, 22.113, 22.114 and
22.116, special precautions may need to be taken when performing the tests.
5.3 Addition:
Before starting the tests, the appliance shall be operated at rated voltage for at least 24 h,
then switched off and left to stand for at least 12 h.
5.7 Addition:
For ice-makers, the tests in accordance with Clauses 10, 11 and 13 are performed at an
ambient temperature of 32 °C ± 2 °C
For other appliances, tests in accordance with Clauses 10, 11 and 13 are performed at an
ambient temperature of
– 32 °C ± 2 °C on appliances of test room climatic class 0, 1, 2, 3, 4, 6 or 8;
– 43 °C ± 2 °C on appliances of test room climatic class 5 or 7.
Before starting the tests specified in 10, 11 and 13, the appliance, with the doors or lids open,
is brought to the ambient specified temperature ± 2 K.
Other tests are performed at an ambient temperature of 20 °C ± 5 °C.
Appliances classified for several climatic classes are tested at the ambient temperature
relevant to the highest test room climatic class.
NOTE 101 Steady conditions are considered to be established when three successive readings of the
temperature, taken at approximately 60 min intervals, at the same point of any operating cycle, do not differ by
more than 1 K.
5.10 Addition:
For appliances with a remote refrigerant unit, the refrigerant unit is connected to the
cabinet in accordance with the instructions provided with the appliance before testing.
For the tests of 22.111, 22.112 and 22.113, the appliance is empty with doors or lids closed,
or roller blinds closed or open, whichever is the more unfavourable, and is installed as follows.
Appliances, other than built-in appliances, are placed in a test enclosure, the walls of which
enclose the appliance as closely as possible to all its sides and top surface, unless the
manufacturer indicates in the instructions that a free distance shall be observed from the
walls or the ceiling, in which case this distance is observed during the test. If the appliance
has a remote refrigerant unit or motor-compressor, then only the refrigerated display and
storage cabinet is installed in the test enclosure, the remote refrigerant unit or motor-
compressor is placed on the floor of the test corner away from walls.
For appliances incorporating remote refrigerant units or remote motor-compressors, the
refrigerant line between the refrigerant unit or motor-compressor and the refrigerated
display and storage cabinet shall have a length of 5 m to 7,5 m. The refrigerant line shall be
installed with thermal insulation applied in accordance with the instructions. If the appliance
employs R-744 refrigerant in a transcritical refrigeration system, a pressure relief device
shall be installed on the high-pressure side between the motor-compressor and the gas
cooler unless it is pre-fitted to the motor-compressor.
5.101 Appliances that use flammable refrigerants and that, according to the instructions,
may be used with other electrical appliances inside a food/ice storage compartment are tested
with such recommended appliances incorporated and in operation as they would be in normal
use.
NOTE An example of such electrical appliances are deodorizers.
Ice-makers that use flammable refrigerants and that, according to the instructions, may be
used in conjunction with accessories such as ice-bins are tested with such recommended
accessories installed and in operation as they would be in normal use.
6 Classification
This clause of Part 1 is applicable except as follows.
6.101 Refrigerated display and storage cabinets shall be classified for at least one of the
following test room climatic classes:
– test room climate class 0;
– test room climate class 1;
– test room climate class 2;
– test room climate class 3;
– test room climate class 4;
– test room climate class 5;
– test room climate class 6;
– 14 – IEC 60335-2-89:2019 © IEC 2019
– test room climate class 7;
– test room climate class 8.
Compliance is checked by inspection.
NOTE The test room climate classes are specified in ISO 23953-2.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Modification:
Replace the third dash by:
– rated current, in amperes;
Addition:
– power input, in watts, of heating systems, if greater than 100 W;
– defrosting power input, in watts, if the current corresponding to the defrosting power input
is greater than the rated current of the appliance;
– one or more of the numerals; 0, 1, 2, 3, 4, 5, 6, 7 or 8, indicating the test room climatic
class for refrigerated display and storage cabinets;
– for lamps, the rated wattage of the lamp, in watts;
– refrigerant charge for each refrigerating circuit;
– for a single component refrigerant, at least one of the following:
• the chemical name,
• the chemical formula,
• the refrigerant number;
– for a blended refrigerant, at least one of the following:
• the chemical name and nominal proportion of each of its components,
• the chemical formula and nominal proportion of each of its components,
• the refrigerant number and nominal proportion of each of its components,
• the refrigerant number of the refrigerant blend.
– chemical name or refrigerant number of the principal component of the insulation blowing
gas.
Refrigerent numbers shall be designated in accordance with ISO 817.
NOTE 101 Pipe insulation or small items of insulation are not required to be marked.
Appliances that use flammable refrigerants shall be marked with the warning sign ISO 7010-
W021 (2011-05).
Appliances having a refrigerant charge exceeding 150 g of flammable refrigerants within
any refrigerating circuit shall be marked with the maximum allowable pressure for which the
system is designed to withstand.
Appliances having a refrigerant charge within any refrigerating circuit exceeding
4 times the lower flammability limit (LFL) for refrigerants having a flammability classification of
Class A2 or Class A3 and exceeding 6 times the lower flammability limit (LFL) for refrigerants
having a flammability classification of Class A2L, shall be marked with symbol IEC 60417-
6412 (2019-03).
Appliances employing R-744 in a transcritical refrigeration system shall be marked with the
substance of the following:
WARNING: The system contains refrigerant under high pressure. Do not tamper with the
system. It must be serviced by suitably qualified persons only.
Appliances employing R-744 refrigerant in a transcritical refrigeration system shall be
marked with symbol ISO 7000-1701 (2004-01).
Appliances with a remote refrigerant unit employing R-744 refrigerant in a transcritical
refrigeration system shall be marked with the design pressure, unless the appliance
incorporates a pressure relief device pre-fitted to the high-pressure side of the motor-
compressor.
Appliances without automatic liquid-level control and which are intended to be connected to
the water supply mains or to be filled with liquid by the user shall be marked with the
maximum liquid level.
Ice-makers intended to be connected to the water supply shall be marked with symbol
IEC 60417-6375 (2017-03) or with the substance of the following warning:
WARNING: Connect to potable water supply only.
7.6 Addition:
[symbol IEC 60417-6375 connection to potable water supply
(2017-03)]
[Warning sign ISO 7010- warning; Risk of fire/flammable
W021 (2011-05)] materials
[symbol ISO 7000-1701 pressure
(2004-01)]
[symbol IEC 60417-6412
minimum room floor area
(2019-03)]
≥ A m
7.12 Addition:
The instructions shall contain information regarding the maximum loading of each type of
shelf.
The instructions shall state the substance of the following.
– 16 – IEC 60335-2-89:2019 © IEC 2019
Do not store explosive substances such as aerosol cans with a flammable propellant in this
appliance.
If symbol ISO 7000-1701 (2004-01) is used, its meaning shall be explained.
For appliances which use flammable refrigerants, the instructions shall include information
pertaining to the handling, servicing and disposal of the appliance.
The instructions for appliances which use flammable refrigerants shall include the substance
of the following warnings:
WARNING: Keep clear of obstruction all ventilation openings in the appliance enclosure or
in the structure for building-in.
WARNING: Do not use mechanical devices or other means to accelerate the defrosting
process, other than those recommended by the manufacturer.
WARNING: Do not damage the refrigerating circuit.
NOTE 101 This warning is only applicable for appliances with refrigerating circuits which are accessible by
the user.
WARNING: Do not use electrical appliances inside the food/ice storage compartments
unless they are of the type recommended by the manufactu
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