SIST EN 50731:2025
(Main)Durability - Measurement method for the assessment of the reliability of washing machines for household use
Durability - Measurement method for the assessment of the reliability of washing machines for household use
This document provides a measurement method to assess the reliability of washing machines for household use. This document defines the functional analysis, limiting events/states, environmental conditions and test conditions of washing machines. It also elaborates on the level of confidence on the measurement results.
NOTE 1 The method is based on EN 45552 (General method for the assessment of the durability of energy-related products) and takes into account EN 45554 (General methods for the assessment of the ability to repair, reuse and upgrade energy-related products).
This document provides information about the interrelations of reliability, repairability and upgradeability with consideration towards a durability assessment for washing machines for household use.
This document provides input/results about the investigation on the assessment of repairability and upgradeability for washing machines for household use.
This document is not intended to be used to assess the reliability of:
- washing machines, intended for commercial or industrial use;
- washer-dryers.
NOTE 2 A testing method for washing machines unable to provide heated washing programmes have a low market relevance and will be considered in a future edition of this standard.
This document does not address the ability of washing machines to be reused.
Product functions related to the safety of washing machines are out of the scope of this document.
NOTE 3 EN 60335-2-7 addresses safety requirements for household appliances. It includes aging tests that are relevant to safety.
This document is intended to be used for the validation of a reliability declaration.
Funktionsbeständigkeit - Messverfahren zur Bewertung der Zuverlässigkeit von Waschmaschinen für den Hausgebrauch
This document provides a measurement method to assess the reliability of washing machines for household use. This document
defines the functional analysis, limiting events/states, environmental conditions and use conditions of washing machines. It also
elaborates on the level of confidence on the measurement results.
NOTE: The method is based on EN 45552 (General method for the assessment of the durability of energy-related products) and takes into account EN 45554 (General methods for the assessment of the ability to repair, reuse and upgrade energy-related products).
This document provides information about the interrelations of reliability, reparability and upgradeability with consideration
towards a durability assessment for washing machines for household use.
The document provides input/results about the investigation on the assessment of reparability and upgradeability for washing
machines for household use.
Secretary NOTE: Investigations are planned to consider the most important issues identified in TR 50727.
This document is not intended to be used to assess the durability of:
- Washing machines, intended for commercial or industrial use;
- Washer-dryers.
This document does not address the ability of washing machines to be reused
Durabilité - Méthode de mesure pour l’évaluation de la fiabilité des machines à laver pour usage domestique
Le présent document fournit une méthode de mesure pour évaluer la fiabilité des machines à laver pour usage domestique. Il définit l'analyse fonctionnelle, les événements/états limites, les conditions environnementales et les conditions d'essai des machines à laver. Il précise également le niveau de confiance des résultats de mesure.
NOTE 1 La méthode est fondée sur l'EN 45552 (Méthode générale pour l'évaluation de la durabilité des produits liés à l'énergie) et prend en compte l'EN 45554 (Méthodes générales pour l'évaluation de la capacité de réparation, réutilisation et amélioration des produits liés à l'énergie).
Le présent document fournit des informations sur les relations entre la fiabilité, la réparabilité et l'évolutivité en vue d'une évaluation de la durabilité des machines à laver pour usage domestique.
Le présent document fournit des informations/résultats concernant l'étude sur l'évaluation de la réparabilité et de l'évolutivité des machines à laver pour usage domestique.
Le présent document n'est pas destiné à être utilisé pour évaluer la fiabilité des:
- machines à laver destinées à un usage commercial ou industriel;
- machines lavantes-séchantes.
NOTE 2 Avec les nouvelles tendances de marché, une méthode d'essai pour les machines à laver ne proposant pas de programmes de lavage à chaud est désormais plus pertinente et sera envisagée dans une édition ultérieure de la présente norme.
Le présent document ne traite pas de la capacité des machines à laver à être réutilisées.
Les fonctions du produit liées à la sécurité des machines à laver ne relèvent pas du domaine d'application du présent document.
NOTE 3 L'EN 60335-2-7 traite des exigences de sécurité pour les appareils domestiques. Cette norme inclut des essais de vieillissement pertinents pour la sécurité.
Le présent document est destiné à être utilisé pour la validation d'une déclaration de fiabilité.
Trajnost - Merilna metoda za ocenjevanje zanesljivosti pralnih strojev za uporabo v gospodinjstvu
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2025
Trajnost - Merilna metoda za ocenjevanje zanesljivosti pralnih strojev za uporabo v
gospodinjstvu
Durability - Measurement method for the assessment of the reliability of washing
machines for household use
Funktionsbeständigkeit - Messverfahren zur Bewertung der Zuverlässigkeit von
Waschmaschinen für den Hausgebrauch
Durabilité - Méthode de mesure pour l’évaluation de la fiabilité des machines à laver
pour usage domestique
Ta slovenski standard je istoveten z: EN 50731:2025
ICS:
97.060 Aparati za nego perila Laundry appliances
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 50731
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2025
ICS 97.060
English Version
Durability - Measurement method for the assessment of the
reliability of washing machines for household use
Durabilité - Méthode de mesure pour l'évaluation de la Funktionsbeständigkeit - Messverfahren zur Bewertung der
fiabilité des machines à laver pour usage domestique Zuverlässigkeit von Waschmaschinen für den
Hausgebrauch;
This European Standard was approved by CENELEC on 2025-05-27. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50731:2025 E
Contents Page
1 European foreword . 3
2 Introduction . 4
3 1 Scope . 5
4 2 Normative references . 5
5 3 Terms and definitions . 5
6 4 General . 8
7 5 Specification of a washing machine . 8
8 5.1 Functional analysis . 8
9 5.2 Ambient conditions . 8
10 5.3 Use conditions . 9
11 5.4 Priority parts . 9
12 6 Tests for reliability .10
13 6.1 General .10
14 6.2 Overview over the reliability testing procedure .10
15 6.2.1 Overview .10
16 6.2.2 Initial inspection .11
17 6.2.3 Test site .11
18 6.2.4 Preparation of the washing machine for testing .11
19 6.2.5 Reference testing procedure .11
20 6.2.6 Requirements for washing cycles .12
21 6.2.7 Requirements for the rinse and spin cycles .13
22 6.2.8 Definition of loads .13
23 6.2.9 Parameter monitoring procedure .14
24 6.2.10 End of test criteria .14
25 6.3 Parts tests.15
26 6.3.1 General .15
27 6.3.2 Part overview and assessment of coverage .15
28 6.4 Final inspection .16
29 7 Statistical relevance of the test approach .16
30 8 Repairability .16
31 9 Upgradeability .17
32 10 Durability .17
33 Annex A (informative) Functional analysis .18
34 Annex B (informative) Integration of a washing machine vibration spectrum in the reliability
35 assessment - Analysis .21
36 B.1 Relation between vibrations and reliability.21
37 B.2 Interest of the vibration spectrum in a reliability assessment.21
38 B.3 Way forward .21
39 Annex C (informative) Considerations on statistics .22
40 Bibliography .25
41 European foreword
42 This document (EN 50731:2025) has been prepared by CLC/TC 59X “Performance of household and similar
43 electrical appliances”.
44 The following dates are fixed:
• latest date by which this document has to be (dop) 2026-06-30
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2028-06-30
conflicting with this document have to be
withdrawn
45 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
46 rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
47 Any feedback and questions on this document should be directed to the users’ national committee. A complete
48 listing of these bodies can be found on the CENELEC website.
49 Introduction
50 As energy-related products (ErP) can often not be completely recycled, and the benefits associated with material
51 recovery cannot fully compensate the energy and material demand of the whole production chain, each
52 disposed ErP also means losses in energy and materials. Therefore, increasing the durability of ErPs can
53 contribute to a reduction in the quantity of raw materials used and energy required for the production and end-
54 of-life treatment of ErPs and consequently reduces adverse environmental impacts.
55 Due to the general longevity of washing machines and their long-running hours per annum, the assessment of
56 the reliability of these products can be very time-consuming and costly. Methods and approaches that may be
57 used to quantify these aspects are included in this document. The transportation and storage of washing
58 machines is usually considered as a separate aspect from the durability and reliability of the product. It is
59 generally expected that the product will arrive at the end consumer in a state where it can fulfil its intended
60 function.
61 The procedure described in this document is under consideration in light of a validation test being conducted at
62 the time of writing this document.
63 The validation test is conducted via APPLiA Home Appliances Europe
64 1 Scope
65 This document provides a measurement method to assess the reliability of washing machines for household
66 use. This document defines the functional analysis, limiting events/states, environmental conditions and test
67 conditions of washing machines. It also elaborates on the level of confidence on the measurement results.
68 NOTE 1 The method is based on EN 45552 (General method for the assessment of the durability of energy-related
69 products) and takes into account EN 45554 (General methods for the assessment of the ability to repair, reuse and upgrade
70 energy-related products).
71 This document provides information about the interrelations of reliability, repairability and upgradeability with
72 consideration towards a durability assessment for washing machines for household use.
73 This document provides input/results about the investigation on the assessment of repairability and
74 upgradeability for washing machines for household use.
75 This document is not intended to be used to assess the reliability of:
76 — washing machines, intended for commercial or industrial use;
77 — washer-dryers.
78 NOTE 2 A testing method for washing machines unable to provide heated washing programmes have a low market
79 relevance and will be considered in a future edition of this standard.
80 This document does not address the ability of washing machines to be reused.
81 Product functions related to the safety of washing machines are out of the scope of this document.
82 NOTE 3 EN 60335-2-7 addresses safety requirements for household appliances. It includes aging tests that are relevant
83 to safety.
84 This document is intended to be used for the validation of a reliability declaration.
85 2 Normative references
86 The following documents are referred to in the text in such a way that some or all of their content constitutes
87 requirements of this document. For dated references, only the edition cited applies. For undated references, the
88 latest edition of the referenced document (including any amendments) applies.
89 EN 60456:2016, Clothes washing machines for household use - Methods for measuring the performance
90 3 Terms and definitions
91 For the purposes of this document, the following terms and definitions apply.
92 ISO and IEC maintain terminology databases for use in standardization at the following addresses:
93 — ISO Online browsing platform: available at https://www.iso.org/obp/
94 — IEC Electropedia: available at https://www.electropedia.org/
95 3.1
96 durability
97 ability to function as required, under defined conditions of use, maintenance and repair,
98 until a limiting state is reached
99 Note 1 to entry: The degree to which maintenance and repair are within the scope of durability will vary by product or
100 product-group.
As impacted by EN 60456:2016/A12:2023.
101 Note 2 to entry: Durability can be expressed in units appropriate to the part or product concerned, e.g. calendar time,
102 operating cycles, distance run, etc. The units should always be clearly stated.
103 [SOURCE: EN 45552:2020, 3.1.1.1, Note 2 to entry substituted]
104 3.2
105 reliability
106 probability that a product functions as required under given conditions, including maintenance, for a given
107 duration without a limiting event
108 Note 1 to entry: The intended function(s) and given conditions are described in the information for use provided with the
109 product.
110 Note 2 to entry: Duration can be expressed in un
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