Clothes washing machines and washer-dryers for household and similar use - Method for the determination of temperature inside the laundry load

This Technical Specification provides a measurement and evaluation method for the determination of the representative maximum temperature reached inside the base load during the washing cycle of a washing machine or washer-dryer.
The mean maximum temperature within the base load is measured with three temperature sensors, which are attached to towels and/or pillowcases placed in different, representative locations inside the drum.
This Technical Specification does not provide a method for measuring a temperature for the evaluation of hygiene performance.

Waschmaschinen und Waschtrockner für den Hausgebrauch und ähnlichen Gebrauch - Methode zur Bestimmung der Temperatur in der Wäschebeladung

Pralni in pralno-sušilni stroji za gospodinjsko in podobno uporabo - Metoda za ugotavljanje temperature v perilu

General Information

Status
Published
Publication Date
11-Jun-2020
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
05-Jun-2020
Due Date
10-Aug-2020
Completion Date
12-Jun-2020

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SLOVENSKI STANDARD
SIST-TS CLC/TS 50707:2020
01-julij-2020
Pralni in pralno-sušilni stroji za gospodinjsko in podobno uporabo - Metoda za
ugotavljanje temperature v perilu

Clothes washing machines and washer-dryers for household and similar use - Method

for the determination of temperature inside the laundry load
Waschmaschinen und Waschtrockner für den Hausgebrauch und ähnlichen Gebrauch -
Methode zur Bestimmung der Temperatur in der Wäschebeladung
Ta slovenski standard je istoveten z: CLC/TS 50707:2020
ICS:
97.060 Aparati za nego perila Laundry appliances
SIST-TS CLC/TS 50707:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TS CLC/TS 50707:2020
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SIST-TS CLC/TS 50707:2020
TECHNICAL SPECIFICATION CLC/TS 50707
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
May 2020
ICS 97.060
English Version
Clothes washing machines and washer-dryers for household and
similar use - Method for the determination of temperature inside
the laundry load
To be completed Waschmaschinen und Waschtrockner für den
Hausgebrauch und ähnlichen Gebrauch - Methode zur
Bestimmung der Temperatur in der Wäschebeladung
This Technical Specification was approved by CENELEC on 2020-04-13.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly

at national level in an appropriate form. It is permissible to keep conflicting national standards in force.

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,

Turkey 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

© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. CLC/TS 50707:2020 E
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SIST-TS CLC/TS 50707:2020
Contents Page

European foreword ...............................................................................................................................3

Introduction ...........................................................................................................................................4

1 Scope ........................................................................................................................................5

2 Normative References .............................................................................................................5

3 Terms, definitions and symbols .............................................................................................5

3.1 Terms and definitions .............................................................................................................5

3.2 Symbols ....................................................................................................................................5

4 Test conditions, materials, equipment and instrumentation ..............................................6

5 Preparation for testing ............................................................................................................6

5.1 Preparation of equipment .......................................................................................................6

5.2 Procedure .................................................................................................................................8

6 General test requirements ................................................................................................... 10

7 Temperature test ................................................................................................................... 10

7.1 Data acquisition .................................................................................................................... 10

7.2 Validity of temperature data and test runs ........................................................................ 10

7.3 Expression of results ........................................................................................................... 11

8 Assessment of temperature ................................................................................................ 11

8.1 Evaluation method to define the maximum temperature reached for 5 minutes inside

the base load ......................................................................................................................... 11

9 Data to be reported ............................................................................................................... 12

Annex A (normative) Test report – Data to be recorded ............................................................... 13

A.1 General .................................................................................................................................. 13

A.2 Data for test washing machine or washer-dryer ............................................................... 13

A.3 Data, parameters and results for the test series ............................................................... 13

Bibliography ....................................................................................................................................... 15

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SIST-TS CLC/TS 50707:2020
CLC/TS 50707:2020 (E)
European foreword

This document (CLC/TS 50707:2020) has been prepared by CLC/TC 59X, "Performance of household and

similar electrical appliances".

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CENELEC by the European Commission and

the European Free Trade Association.
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SIST-TS CLC/TS 50707:2020
CLC/TS 50707:2020 (E)
Introduction

This document has been prepared by CLC/TC 59X, "Performance of household and similar electrical

appliances".
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SIST-TS CLC/TS 50707:2020
CLC/TS 50707:2020 (E)
1 Scope

This document provides a measurement and evaluation method for the determination of the representative

maximum temperature reached inside the base load during the washing cycle of a washing machine or

washer-dryer.

The mean maximum temperature within the base load is measured with three temperature sensors, which

are attached to towels and/or pillowcases placed in different, representative locations inside the drum.

This document does not provide a method for measuring a temperature for the evaluation of hygiene

performance.
2 Normative References

The following documents are referred to in the text in such a way that some or all of their content constitutes

requirements of this document. For dated references, only the edition cited applies. For undated references,

the latest edition of the referenced document (including any amendments) applies.

EN 60456:2016/A11:— , Clothes washing machines for household use — Methods for measuring the

performance

EN IEC 62512:— , Electric clothes washer-dryers for household use — Methods for measuring the

performance
3 Terms, definitions and symbols
3.1 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.2 Symbols
test run
data logger number
total number of data loggers
total average maximum temperature for each treatment z (z = full, ½, ¼)
max,z
average maximum temperature for the test run i with treatment z (z = full, ½, ¼)
max,zi,

maximum temperature for the data logger k (k = 1, 2, 3) for test run i (i = 1, 2, 3, 4) for the

max,zi, ,k
treatment z (z = full, ½, ¼)
Under preparation. Stage at the time of publication: EN 60456:2016/prAA:2019.
Under preparation. Stage at the time of publication: prEN IEC 62512:2019.
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SIST-TS CLC/TS 50707:2020
CLC/TS 50707:2020 (E)
the x’th value out of the list of sorted temperatures is the maximum temperature
max,zi, ,k
treatment
4 Test conditions, materials, equipment and instrumentation

The temperature inside the base load shall be measured with data loggers with the following specifications:

— Temperature range: at least (0 to 85) °C

NOTE 1 For tests involving continuous wash & dry programmes the device might need to withstand temperatures in

excess of 120 °C.
— Accuracy: ≤ 0,5 °C at 0 °C to 60 °C ; ≤ 2 °C above 60 °C
— Resolution: ≤ 0,2 °C
— Response time TC (10 to 90 %) in water: ≤ 2 min

— TC (10 % to 90 %) is the time it takes for the sensor to traverse between 10 % and 90 % of its final value.

Response time can also be expressed as a TC 63 % value. The 63 % figure is the time for the sensor to

reach 63 % of its final value. TC (10 % to 90 %) and the TC 63 % value are of approximately the same

magnitude for a given sensor.
— Sampling rate: ≤ 10 s
— Max mass: 30 g
— Dimensions: max 35 mm in each dimension

NOTE 2 Dimensions have been chosen to minimize mechanical impact on the base load. It is intended that the

addition of temperature loggers to the base load should not have a significant influence on the washing performance.

— Water protection class: IP67
5 Preparation for testing
5.1 Preparation of equipment
5.1.1 General

Data loggers shall be prepared for data acquisition according to the supplier’s instructions.

5.1.2 Attaching a data logger to a towel or a pillowcase
A data logger shall be attached to a base load item in the following way:

1. Place the data logger in the centre of a towel or pillowcase as pictured in Figure 1 and 2.

2. Fasten the towel or pillowcase around the data logger as pictured in Figure 3, 4 and 5. The fastening of

the data logger shall ensure that the data logger does not loosen during the test.

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SIST-TS CLC/TS 50707:2020
CLC/TS 50707:2020 (E)
Figure 1 — Placing the data logger in the centre of a towel according to step 1

Figure 2 — Placing the data logger in the centre of a pillowcase according to step 1

Figure 3 — Fasten the towel around the data logger according to step 2
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SIST-TS CLC/TS 50707:2020
CLC/TS 50707:2020 (E)
Figure 4 — Fasten the pillowcase around the data logger according to step 2

Figure 5 — Different examples for fastening of data logger to towels or pillowcases (close-ups)

5.2 Procedure
5.2.1 Number of data loggers

For each test run 3 data loggers shall be used, except in the case of a half load mass of 1,5 kg when only

two data loggers shall be used.
5.2.2 Placement of data loggers in the base load

To measure the temperature inside the base load during a wash cycle, the data loggers shall be attached to

towels and pillowcases as described in 5.1.2. The position of the towel or the pillowcase with the attached

logger is determined by the respective loading step according to Table H.2 of EN 60456:2016/A11:— in

case of full loads and quarter loads and according to Table ZA.2 to ZA.7 of EN 60456:2016/A11:— in case

of half loads.
5.2.3 Position and orientation
...

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