prEN 50731:2024
(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, reparability 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 reparability and upgradeability for washing machines for household use. Secretary NOTE: Investigations are planned to consider the most important issues identified in CLC/TR 50727. This document is not intended to be used to assess the reliability of: - washing machines, intended for commercial or industrial use; - washer-dryers. 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 2 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 verification 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 à 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 à usage domestique. Le présent document fournit des informations/résultats concernant l’enquête sur l’évaluation de la réparabilité et de l’évolutivité des machines à laver à usage domestique. NOTE du secrétariat: Des enquêtes sont prévues pour examiner les questions les plus importantes identifiées dans le document CLC/TR 50727. 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. 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 2 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 vérification 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-junij-2024
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: prEN 50731:2024
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 DRAFT
prEN 50731
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2024
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 draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2024-07-26.
It has been drawn up by CLC/TC 59X.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CENELEC 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
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
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 76049 Ref. No. prEN 50731:2024 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 . 9
8 5.1 Functional Analysis . 9
9 5.2 Ambient conditions . 9
10 5.3 Use conditions . 9
11 5.4 Priority parts . 10
12 6 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 . 12
20 6.2.6 Program requirements for washing cycles . 13
21 6.2.7 Programme requirements for the rinse and spin cycles . 13
22 6.2.8 Definition of loads . 14
23 6.2.9 Parameter monitoring procedure . 14
24 6.2.10 Measurement tolerances and end of test criteria . 15
25 6.2.11 Final inspection . 15
26 6.3 Parts tests. 15
27 6.3.1 General . 15
28 6.3.2 Part overview and assessment of coverage . 15
29 6.3.3 Door test . 16
30 7 Statistics . 16
31 8 Reparability . 17
32 9 Upgradeability . 17
33 10 Durability . 17
34 Annex A (informative) Functional analysis . 18
35 Annex B (informative) Integration of a washing machine vibration spectrum in the reliability assessment
36 - Analysis . 21
37 B.1 Relation between vibrations and reliability. 21
38 B.2 Interest of the vibration spectrum in a reliability assessment. 21
39 B.3 Way forward . 21
40 Annex C (informative) Considerations on statistics . 22
41 Bibliography . 25
42 European foreword
43 This document (prEN 50731:2024) has been prepared by CLC/TC 59X “Performance of household and similar
44 electrical appliances”.
45 This document is currently submitted to the Enquiry.
46 The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)
47 Introduction
48 As energy-related products (ErP) can often not be completely recycled, and the benefits associated with material
49 recovery cannot fully compensate the energy and material demand of the whole production chain, each
50 disposed ErP also means losses in energy and materials. Therefore, increasing the durability of ErPs can
51 contribute to a reduction in the quantity of raw materials used and energy required for the production and end-
52 of-life treatment of ErPs and consequently reduces adverse environmental impacts.
53 Due to the general longevity of washing machines and their long running hours per annum the assessment of
54 the durability, or reliability, of these products can be very time-consuming and costly. Methods and approaches
55 that may be be used to quantify these aspects are included in this document. The transportation and storage of
56 washing machines is usually considered as a separate aspect from the durability and reliability of the product.
57 It is generally expected that the product will arrive at the end consumer in a state where it can fulfil its intended
58 function.
59 1 Scope
60 This document provides a measurement method to assess the reliability of washing machines for household
61 use. This document defines the functional analysis, limiting events/states, environmental conditions and test
62 conditions of washing machines. It also elaborates on the level of confidence on the measurement results.
63 NOTE 1 The method is based on EN 45552 (General method for the assessment of the durability of energy-related
64 products) and takes into account EN 45554 (General methods for the assessment of the ability to repair, reuse and upgrade
65 energy-related products).
66 This document provides information about the interrelations of reliability, reparability and upgradeability with
67 consideration towards a durability assessment for washing machines for household use.
68 This document provides input/results about the investigation on the assessment of reparability and
69 upgradeability for washing machines for household use.
Secretary NOTE: Investigations are planned to consider the most important issues identified in
CLC/TR 50727.
70 This document is not intended to be used to assess the reliability of:
71 — washing machines, intended for commercial or industrial use;
72 — washer-dryers.
73 This document does not address the ability of washing machines to be reused.
74 Product functions related to the safety of washing machines are out of the scope of this document.
75 NOTE 2 EN 60335-2-7 addresses safety requirements for household appliances. It includes aging tests that are relevant
76 to safety.
77 This document is intended to be used for the verification of a reliability declaration.
78 2 Normative references
79 The following documents are referred to in the text in such a way that some or all of their content constitutes
80 requirements of this document. For dated references, only the edition cited applies. For undated references, the
81 latest edition of the referenced document (including any amendments) applies.
82 EN 60456:2016 , Clothes washing machines for household use - Methods for measuring the performance
83 3 Terms and definitions
84 For the purposes of this document, the following terms and definitions apply.
85 ISO and IEC maintain terminology databases for use in standardization at the following addresses:
86 — ISO Online browsing platform: available at https://www.iso.org/obp/
87 — IEC Electropedia: available at https://www.electropedia.org/
88 3.1
89 durability
90 ability to function as required, under defined conditions of use, maintenance and repair,
91 until a limiting state is reached
92 Note 1 to entry: The degree to which maintenance and repair are within the scope of durability will vary by product or
93 product-group.
As impacted by EN 60456:2016/A11:2020 and EN 60456:2016/A12:2023.
94 Note 2 to entry: Durability can be expressed in units appropriate to the part or prod
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