Clothes washing machines for household use - Methods for measuring the performance

IEC 60456:2010(E) specifies methods for measuring the performance of clothes washing machines for household use, with or without heating devices utilising cold and/or hot water supply. It also deals with appliances for water extraction by centrifugal force (spin extractors) and is applicable to appliances for both washing and drying textiles (washer-dryers) with respect to their washing related functions. This International Standard also covers washing machines which specify the use of no detergent for normal use. This edition includes the following significant changes from the previous edition. Modified test load mass requirement for cases where: - rated capacity of test machine is not declared; - introduction of soft water option; - expanded stain/soil set; - improved method of loading and folding test load items to better suit vertical axis, horizontal axis and twin tub systems; - revised and amended reference machine specifications reflecting full qualification on new Electrolux Wascator CLS; - new reference programmes for lower temperature and vertical axis systems; - refined rinsing efficiency method; - introduction of low power modes "OFF" and "Left On"; - new annex regarding uncertanity of measurements.

Waschmaschinen für den Hausgebrauch - Verfahren zur Messung der Gebrauchseigenschaften

Machines à laver le linge pour usage domestique - Méthodes de mesure de l'aptitude à la fonction

L'IEC 60456:2010 spécifie les méthodes de mesure de l'aptitude à la fonction des machines à laver le linge à usage domestique, avec ou sans dispositif de chauffage et alimentées en eau froide et/ou en eau chaude. Elle traite également des appareils à essorer le linge par la force centrifuge (essoreuses centrifuges). De même, elle est applicable aux appareils destinés à laver et sécher le linge (machines lavantes-séchantes) pour ce qui concerne leurs fonctions relatives au lavage. La présente Norme internationale couvre également les machines à laver spécifiées comme n'utilisant pas de détergent en utilisation normale. L'aptitude à la fonction des sèche-linge est évaluée selon l'IEC 61121. L'objet de la présente norme est d'établir et de définir les caractéristiques principales d'aptitude à la fonction des machines à laver électriques à usage domestique et de décrire les méthodes d'essai et de mesure de ces caractéristiques. La présente Norme internationale s'applique également aux machines à laver à usage collectif dans les immeubles ou les laveries automatiques. Elle ne s'applique pas aux machines à laver des blanchisseries. La présente Norme internationale n'est pas destinée à être utilisée dans le cadre d'une évaluation comparative de détergents. La présente Norme internationale ne spécifie pas les exigences relatives au bruit applicables aux machines à laver. Les mesures de bruit sont spécifiées dans l'IEC 60704-1 et l'IEC 60704-2-4. La présente Norme internationale ne spécifie pas les exigences de sécurité applicables aux machines à laver. Les exigences de sécurité sont spécifiées dans l'IEC 60335-2-7. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente. - Modification de l'exigence de masse de la charge d'essai dans le cas où la capacité assignée de la machine d'essai n'est pas déclarée. La détermination de la masse de la charge d'essai dans le cas où la capacité assignée n'est pas déclarée a été modifiée afin de supprimer l'ambiguïté de l'édition 4 et d'encourager cette déclaration. - Introduction d'une option d'eau douce. - Extension des salissures employées (pour l'évaluation de l'aptitude au lavage). - Amélioration de la méthode de chargement et de pliage des articles de charge d'essai pour une meilleure adaptation aux machines à axe vertical, à axe horizontal et à double cuve. - Révision et amendement des spécifications de la machine de référence reflétant toutes les qualifications de la nouvelle Electrolux Wascator CLS. - Nouveaux programmes de référence pour les systèmes à axe vertical et basses températures. Nouvelle annexe informative comparant les programmes de référence aux programmes domestiques types. - Affinage de la méthode d'efficacité du rinçage. - Introduction de modes "arrêt" et "marche" basse puissance (pour l'évaluation de la consommation d'énergie). - Nouvelle annexe relative à l'incertitude des mesures.

Gospodinjski pralni stroji - Metode za merjenje funkcionalnosti

IEC 60456:2010(E) določa metode za merjenje funkcionalnosti gospodinjskih pralnih strojev z grelnimi napravami, ki uporabljajo vir oskrbe z vročo in/ali mrzlo vodo, ali brez njih. Obravnava tudi naprave za odstranjevanje vode s centrifugalno silo (centrifuge) ter se uporablja za naprave za pranje in sušenje tekstilnih izdelkov (pralno-sušilni stroji) glede na njihove funkcije, povezane s pranjem. Ta mednarodni standard obravnava tudi pralne stroje, ki določajo uporabo brez detergenta za običajno uporabo. Ta izdaja vključuje spodnje bistvene spremembe glede na prejšnjo izdajo. Primeri za zahtevo glede spremenjene preskusne obremenitvene mase:
– manjkajoča navedba nazivne zmogljivosti preskusnega stroja;
– uvedba možnosti mehčanja vode;
– razširjeni nabor možnosti odstranjevanja umazanije in madežev;
– izboljšana metoda polnjenja in zlaganja preskusnih obremenitvenih elementov za primernejšo obremenitev sistemov z navpično osjo, vodoravno osjo ali dvojnim koritom;
– spremenjene in dopolnjene specifikacije referenčnih strojev, ki dokazujejo polno kvalifikacijo novega stroja Electrolux Wascator CLS;
– novi referenčni programi za sisteme z nižjo temperaturo ali navpično osjo;
– izboljšana metoda za zagotavljanje učinkovitosti izpiranja;
– uvedba načinov »IZKLOP« in »Podaljšani vklop« za nizko porabo energije;
– nov dodatek o negotovosti meritev.

General Information

Status
Withdrawn
Publication Date
13-Jun-2016
Withdrawal Date
13-Dec-2018
Current Stage
6060 - Document made available - Publishing
Start Date
08-Apr-2016
Due Date
20-Dec-2015
Completion Date
08-Apr-2016

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SLOVENSKI STANDARD
SIST EN 60456:2016
01-maj-2016
1DGRPHãþD
SIST EN 60456:2011
SIST EN 60456:2011/AC:2011
Gospodinjski pralni stroji - Metode za merjenje funkcionalnosti

Clothes washing machines for household use - Methods for measuring the performance

Waschmaschinen für den Hausgebrauch - Verfahren zur Messung der
Gebrauchseigenschaften

Machines à laver le linge pour usage domestique - Méthodes de mesure de l'aptitude à

la fonction
Ta slovenski standard je istoveten z: EN 60456:2016
ICS:
97.060 Aparati za nego perila Laundry appliances
SIST EN 60456:2016 en

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

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SIST EN 60456:2016
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SIST EN 60456:2016
EUROPEAN STANDARD EN 60456
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2016
ICS 97.060 Supersedes EN 60456:2011
English Version
Clothes washing machines for household use - Methods for
measuring the performance
(IEC 60456:2010 , modified)

Machines à laver le linge pour usage domestique - Waschmaschinen für den Hausgebrauch - Verfahren zur

Méthodes de mesure de l'aptitude à la fonction Messung der Gebrauchseigenschaften

(IEC 60456:2010 , modifiée) (IEC 60456:2010 , modifiziert)

This European Standard was approved by CENELEC on 2015-12-14. 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.
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

© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 60456:2016 E
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SIST EN 60456:2016
EN 60456:2016 - 2 -
Contents

European foreword ................................................................................................................. 6

2 Normative references ....................................................................................................... 7

3 Terms, definitions and symbols ........................................................................................ 7

3.1 Terms and definitions .............................................................................................. 7

3.2 Symbols .................................................................................................................. 9

5 Test conditions, materials, equipment and instrumentation ............................................. 15

5.2 Ambient conditions ................................................................................................ 15

5.2.1 Electricity supply ....................................................................................... 15

5.2.2 Water supply ............................................................................................. 15

5.4.2 Reference machine .................................................................................... 15

5.5 Instrumentation and accuracy ................................................................................ 16

5.5.2 Instruments ............................................................................................... 16

5.5.3 Measurements ........................................................................................... 17

6 Preparation for testing .................................................................................................... 17

6.2 Test washing machine and reference machine preparation .................................... 17

6.3 Detergent .............................................................................................................. 18

6.4 Test loads ............................................................................................................. 18

7 Performance measurements – general requirements ...................................................... 19

8 Tests for performance .................................................................................................... 20

8.1 General ................................................................................................................. 20

8.2 Test procedure for performance tests .................................................................... 20

8.4 Measurements to determine water extraction performance .................................... 21

8.5 Measurements to determine rinsing performance .................................................. 21

8.6 Measurements to determine water and energy consumption and programme

time ....................................................................................................................... 21

9 Assessment of performance ........................................................................................... 22

9.1 General ................................................................................................................. 22

9.2 Evaluation of washing performance ....................................................................... 22

9.3 Evaluation of water extraction performance ........................................................... 22

9.4 Evaluation of rinsing performance ......................................................................... 22

9.5 Evaluation of water and energy consumption and programme time ........................ 22

11 Data to be reported ........................................................................................................ 22

Annex A (normative) Specification of stain test strips with standardized soiling .................... 23

Annex D (normative) Reference machine specification ......................................................... 24

Annex G (normative) The bone-dry method of conditioning .................................................. 25

Annex H (normative) Folding and loading the test load ........................................................ 26

Annex I (normative) Calculation of weighted average age of the cotton base load ................ 27

Annex L (informative) Measurement of energy consumption in low power modes of

washing machines .......................................................................................................... 28

Annex M (informative) Testing procedure for manual washing machines .............................. 28

Annex N (informative) Procedure to determine test load size where rated capacity is

not declared ................................................................................................................... 28

Annex O (informative) Additional evaluation of washing performance ................................... 29

Annex S (normative) Test report – data to be reported ......................................................... 30

Annex ZA (normative) Test procedure for a combined test sequence of cotton 40 °C

and cotton 60 °C with full load and partial load ............................................................... 31

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Annex ZB (normative) Tolerances and control procedures ................................................. 69

Annex ZC (normative) Normative references to international publications with their

corresponding European publications ............................................................................. 70

Annex ZZA (informative) Relationship between this European Standard and the
energy labelling re-quirements of Commission Delegated Regulation (EU) No

1061/2010 aimed to be covered ...................................................................................... 72

Annex ZZB (informative) Relationship between this European Standard and the
ecodesign requirements of Commission Regulation (EU) No 1015/2010 aimed to

be covered ..................................................................................................................... 74

Bibliography .......................................................................................................................... 76

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SIST EN 60456:2016
EN 60456:2016 - 4 -
European foreword

This document (EN 60456:2016) consists of the text of IEC 60456:2010 prepared by SC 59D

“Home laundry appliances” of IEC/TC 59 "Performance of household and similar electrical ap-

pliances”, together with the common modifications prepared by CLC/TC 59X "Performance of

household and similar electrical appliances".
The following dates are fixed:
(dop) 2016-12-14
• latest date by which this document has to be imple-
mented at national level by publication of an identical
national standard or by endorsement
• latest date by which the national standards conflicting (dow) 2018-12-14
with this document have to be withdrawn
This document supersedes EN 60456:2011.
Significant technical differences are:

a) the test procedure to measure power and energy consumption in left-on-mode and the

referenced standard has been corrected; (Z.A. 4.9);
b) deletion of RMS and two sided confidence level formulas (Z.A. 5.2);

c) corrections in evaluation of water extraction performance (formulas) are integrated (Z.A.

5.4);
d) corrections in evaluation of spin speed (formulas) are integrated (Z.A. 5.5);

e) corrections in evaluation of power and energy consumption measurements in left-on-

mode (formulas and references) are integrated (Z.A. 5.9);
f) Table ZA17: Correction of the reported precision;
g) Annex ZB is re-phrased;
h) the normative references in Annex ZC are updated;
i) new Annexes ZZA and ZZB.

This European Standard also specifies, as far as necessary, the test methods which shall be

applied in accordance with the COMMISSION DELEGATED REGULATION (EU) No

1061/2010 implementing Directive 2010/30/EU of the European Parliament and of the Council

with regard to energy labelling of household washing machines and in accordance with the

COMMISSION REGULATION (EU) No 1015/2010 implementing Directive 2009/125/EC of the

European Parliament and of the Council with regard to ecodesign requirements for household

washing machines.

Clauses, subclauses, notes, tables, figures and annexes which are additional to those in

IEC 60456:2010 are prefixed “Z”.

Annex ZA sets out the procedure to be applied for testing according to Commission Regula-

tions with regard to energy labelling and ecodesign and provides all necessary links to all rel-

evant clauses of this European Standard.

Annex ZB has been re-phrased and provides control procedures for checking measured val-

ues in comparison to values declared by the manufacturer and taking into account any permit-

ted tolerances.
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SIST EN 60456:2016
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This document has been prepared under a mandate given to CENELEC by the European

Commission and the European Free Trade Association, and supports Commission Regulation

(EU) No. 1015/2010 and Commission Delegated Regulation (EU) No. 1061/201.

For the relationship with Commission Regulation (EU) No. 1015/2010 and Commission Dele-

gated Regulation (EU) No. 1061/201 see informative Annex ZZA and ZZB, which are integral

parts of this document.
Endorsement notice

The text of the International Standard IEC 60456:2010 was approved by CENELEC as a Eu-

ropean Standard with agreed common modifications.
COMMON MODIFICATIONS
2 Normative references
Add the following note:

NOTE Z1 Normative references to the relevant European Standards are listed in Annex ZC (normative).

3 Terms, definitions and symbols
3.1 Terms and definitions
Add the following new definitions:
3.1.Z1
full load

test load to be used for a combined test series according to Annex ZA, having a nominal

mass that is equal to the greatest amount of cotton textiles that may be washed using the

standard 60 °C cotton programme or the standard 40 °C cotton programme, as stated by the

manufacturer in the instruction manual or on the energy label supplied with the test washing

machine, whichever is higher
3.1.Z2
partial load
half of the full load for cotton textiles
3.1.Z3
treatment

combination of test load and programme to be used for a test run within a combined test

series
3.1.Z4
treatment 60½
standard 60 °C cotton programme with partial load
3.1.Z5
treatment 40½
standard 40 °C cotton programme with partial load
3.1.Z6
treatment 60
standard 60 °C cotton programme with full load
3.1.Z7
unstable left on mode

condition after opening the door, at the end of the programme where the power consumption

may change without any intervention by the end-user
3.1.Z8
post programme phases

phases after the end of programme defined to be used for the measurement of left on mode

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EN 60456:2016 - 6 -
3.1.Z9
post programme phase LU

phase after the end of programme defined to be used for the measurement of the unstable

left on mode
3.1.Z10
post programme phase LO

phase after the end of programme defined to be used for the measurement of the left on

mode
3.1.Z11
left on mode duration

time to revert automatically the machine to off mode after the end of the programme if the

test washing machine is equipped with a power management system
3.1.Z12
power management system

system within the test washing machine which reverts it automatically to off mode

3.1.Z13
rated value
value declared by the supplier

Note 1 to entry: This may be a declared value and/or a ecodesign limit value. Declared values are the values

required for the energy label and for the fiche.
3.1.Z14
limit value

rated value adjusted by the tolerance to give the maximum and/or minimum value to compare

with the measured result
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3.2 Symbols
Add the following new symbols:
3.2.Z1 Symbols relating to Annex ZA
rounding up/down to full integer values (no decimal places) as described in
ISO 31-0
always rounding up to full integer values (no decimal places)
always rounding down to full integer values (no decimal places)
AE Annual Energy Consumption (kWh)
Annual Water Consumption (l)
rated capacity to calculate the Standard Annual Energy Consumption of the
test washing machine
C sum of the average reflectance values (Y-values) for each test run
average value for the sum of the reflectance values for the treatments 40½ and
60½ with partial load
average sum of the reflectance values in each test run of the reference ma-
ref
chine out of all 5 runs
C average value for the sum of the reflectance values for the treatment 60
average value for the remaining moisture content for the combined test series
(%)
D remaining moisture content of test run i with full load (%)
maximum remaining moisture (%)
D max
average value for the remaining moisture content for the treatments 40½ and
60½ with partial load (%)

is the remaining moisture content of test run with partial base load part (part =

z, part
A, B) with treatment type z (z = 40½, 60½) in %
average for the remaining moisture content for treatment 40½ (%)
average value for the remaining moisture content for treatment 60½ (%)
average value for the remaining moisture content for treatment 60 with full load
(%)
Energy Efficiency Index of a test washing machine
EEI
i test run
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SIST EN 60456:2016
EN 60456:2016 - 8 -
Washing Efficiency Index for the combined test series
Washing Efficiency Index for the treatments 40½ and 60½ with partial load
W ,z
I Washing Efficiency Index for treatment 40½
W 40½
Washing Efficiency Index for treatment 60½
W 60½
Washing Efficiency Index for the treatment 60
W ,60
mass of the conditioned base load (g)
M mass of detergent used (g)
det
mass of base load before each test run (without test strips) (g)
dry
mass of the base load at the end of the test run i (i = 1,2,3) (g)
r,i
mass of the conditioned partial load (Part A or Part B) (g)
part

is the mass at the end of the test run with partial base load part (part = A, B)

z , part
with treatment type z (z = 40½, 60½) in g
nominal partial test load mass (kg)
part
number of test runs per treatment
number of pillowcases in Part A
A,PC
number of sheets in Part A
A,SH
number of stain test strips in Part A
A,STS
number of towels in Part A
A,T
number of pillowcases in Part B
B,PC
number of sheets in Part B
B,SH
number of stain test strips in Part B
B,STS
number of towels in Part B
B,T
n number of pillowcases at rated test load mass
number of sheets at rated test load mass
number of towels at rated test load mass
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SIST EN 60456:2016
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part
partial load identifier (part = A,B)
laboratory supply water pressure cold (kPa)
p laboratory supply water pressure hot (if connected) (kPa)
value for the average power for the 2 post programme phases (LU and LO) for
LU ,z
the treatments 40½, 60½ and 60 (W)
average power during post programme phase LU (W)
P average power during post programme phase LO (W)
average power during post programme phase LO per treatment (W)
LO,z
average value for left on mode power during post programme phase X for the
combined test series (W)
average power in post programme phase X for treatment 40½ (W)
LX 40½
P average power in post programme phase X for treatment 60½ (W)
LX 60½
average power in post programme phase X for treatment 60 (W)
LX 60
P average value for left on mode power for the combined test series (W)
average power in the off mode per treatment (W)
O,z
average energy consumption for treatment 40½ (W)
O40½
average energy consumption for treatment 60½ (W)
O60½
P average energy consumption for treatment 60 (W)
O60
sum of squared residuals per treatment
40½,60½,60
residual per treatment
S average value for the maximum spin speed for the combined test series (rpm)
SAE Standard Annual Energy Consumption (kWh)
S maximum spin speed of test run I with treatment type p (p = 60) (rpm)
lowest value for the maximum spin speed (rpm)
S max
average value for the maximum spin speed for the treatments 40½ and 60½
with partial load (rpm)
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EN 60456:2016 - 10 -
maximum spin speed of test run i with treatment type z (z = 40½, 60½) (rpm)
z,i
average maximum spin speed for the treatment 40½ (rpm)
average maximum spin speed for the treatment 60½ (rpm)
average value for the maximum spin speed for the treatment 60 with full load
(rpm)
standard deviation per treatment
Std standard deviation per test series
t ambient temperature (test room) (°C)
t measured average cold water inlet temperature (°C)
measured average hot water inlet temperature (°C)
t programme time for test run i with treatment type z (z = 60) (min)
measurement time for post programme phase LU (min)
mLU
t measurement time for post programme phase LO (min)
mLO
measurement time in off mode for each treatment (min)
m,z
t main wash duration (min)
average value for the programme time for the treatments 40½ and 60½ with
partial load (min)
programme time for test run i with treatment type z (z = 40½, 60½) (min)
z,i
t average programme time for treatment 40½ (min)
40½
average programme time for treatment 60½ (min)
60½
t average programme time for treatment 60 (min)
average value for left on duration (min)
t left on duration for treatment 40½ (min)
L40½
t left on duration for treatment 60½ (min)
L60½
left on duration for treatment 60 (min)
L60
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average value for the programme time for the combined test series (min)
“Student T” factor for 4 degrees of freedom for a confidence level of 95 %, is
4,1−α / 2
2,776
pooled mean (weighted mean) per test series
volume of cold water used during the main wash (l)
volume of supply hot water used during the main wash (l)
V volume of cold water used in the test (l)
volume of supply hot water used in the test (l)
V total water consumption for test run i with treatment type p (p = 60) in min
V water consumption during the main wash (l)
total water consumption for test run i with treatment type z (l)
z,i
average value for the total water consumption for the treatments 40½ and 60½
with partial load (l)
average value for the total water consumption for the treatment 60 with full
load (l)
V average water consumption for treatment 40½ (l)
40½
V average water consumption for treatment 60½ (l)
60½
average value for the total water consumption for the combined test series (l)
total
average value per treatment
x value for each test run of the treatment
average value per treatment
40½,60½,60
is the total electrical energy metered during the test (kWh)
average value for the total energy consumption for the treatments 40½ and
60½ with partial load (kWh)
total energy consumption for test run i with treatment type z (z = 40½, 60½)
z,i
(kWh)
total energy consumption for test run i with treatment type z (z = 60) (kWh)
W average value for energy consumption for treatment 60 (kWh)
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EN 60456:2016 - 12 -
average value for energy consumption for treatment 40½ (kWh)
40½
W average value for energy consumption for treatment 60½ (kWh)
60½
average value for total energy consumption without hot water (kWh)
total,cold
W average value for total energy consumption for the combined test series (kWh)
total
energy consumption during post programme phase LU per treatment (Wh)
LU ,z
energy consumption during post programme phase LO per treatment (Wh)
LO,z
energy consumption in off mode per treatment (Wh)
O,z
treatment type
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5 Test conditions, materials, equipment and instrumentation
5.1 General
Add
Rounding rules that are given in the regulation supersede standardization.
5.2 Ambient conditions
5.2.1 Electricity supply
Replace the text under 5.2.1 as follows:

The supply voltage to each test washing machine shall be maintained throughout the test at

230 V ± 1 % or at 400 V ± 1 % as defined by the manufacturer’s installation guide. If more

than one option for installation is available and no clear indication for testing is given, the

supply voltage shall be 230 V ± 1 %. The supply voltage measured during the tests shall be

recorded.

NOTE Z1 In the case of a fixed cable, the plug (or the end of the cable) is the reference point at which the supply

voltage shall be maintained.

The supply frequency to each test washing machine shall be maintained at 50 Hz ± 1 %

throughout the test.
5.2.2 Water supply
5.2.2.2 Water hardness
Add after the first paragraph the following new paragraph:

For the combined test series according to Annex ZA water with a total hardness of

(2,5 ± 0,2) mmol/l (hard water) shall be used.
5.2.2.3 Water temperature
Add after NOTE 1 the following new paragraph:

For the combined test series according to Annex ZA the temperature of the hot water supply

(if applicable) shall be set according to declaration given by the manufacturer (± 2 K) in the

instruction manual. If no clear indication is given, the hot water supply temperature shall be

set at (60 ± 2) °C.

When the manufacturer specifies a hot water temperature range, which includes (60 ± 2) °C,

the hot water temperature shall be set at (60 ± 2) °C. When the manufacturer specifies a hot

water temperature range, which does not include (60 ± 2) °C, the hot water temperature shall

be set at the end of the temperature range which is closest to (60 ± 2) °C. When the manufac-

turer specifies a single temperature with a tolerance, then that temperature shall be used.

The hot and cold water inlet supply temperature (as applicable) shall be determined as close

as possible to the point of connection of each test washing machine to the laboratory water

supply system.
Add at the end the following new paragraph and replace NOTE 2 as follows:

For the combined test series according to Annex ZA the water supply system shall be config-

ured so that the temperature of all water entering the inlet hose of the test washing machine

is within specified tolerance with the exception of up to 250 ml of each increment. A tempera-

ture recording system shall record inlet water temperature at intervals of no less than once

per second.

NOTE 2 Clause 8 requires water temperatures and volumes to be recorded on a continuous basis during filling in

order to determine weighted average temperature.
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SIST EN 60456:2016
EN 60456:2016 - 14 -
5.4.2 Reference machine
Add after NOTE 1 the following new paragraph:
For the combined test series according to Annex ZA only type 1 shall be used.
5.5 Instrumentation and accuracy
5.5.2 Instruments
Add a new row at the end of the table below:
Parameter Unit Minimum Minimum Additional re-
resolu- accuracy quirements
tion
Mass
Full test load mass or base g 2 g ± 5 g -
load mass above 3 kg
Individual load items, full test g 0,5 g ± 1 g -
load mass or base load mass
less than or equal to 3 kg
Detergent mass g 0,05 g ± 0,1 g -
Titration mass g 0,005 g ± 0,01 g -
Temperature
Ambient temperature °C 0,1 °C ± 1 K -
Water temperature °C 0,1 °C ± 0,6 K -
Ambient humidity % (RH) 1 % (RH) ± 3 % The specifications
(RH) shall be met over a
temperature range
of 15 °C to 25 °C.
Water volume (water inlet) L 0,1 L ± 2 % Separate metering
for hot and cold
inlets, where appli-
cable
NOTE Devices using
viscosity should be cali-
brated at the actual
nominal temperature
± 5 °C, and the nominal
flow rate. Liquid vol-
umes for titration are
covered by the specifi-
cation for mass in 5.4.1.
Water pressure kPa 10 kPa ± 5 % -
Time s 5 s ± 1 % -
Spin speed rpm 1 rpm ± 1 % -
---------------------- Page: 16 ----------------------
SIST EN 60456:2016
- 15 - EN 60456:2016
5.5.3 Measurements
Replace the fifth row in the following table as follows:
Parameter Unit Minimum Additional requirements
accuracy
Total water hardness mmol/L ± 2 % -
Electrical energy
Programme energy kWh ± 1 % Due to distortion of the voltage
and current wave forms caused
by inductive devices such as
motor controls specific require-
ments for energy meters are
necessary. See e.g.
EN 62053-21 for more infor-
mation.
Off mode and left on mode W Measurement instrumentation for off mode
power and left on mode power are described in
EN 50564
pH - ± 0,05 The accuracy requirement shall
be met over a temperature range
of 15 °C to 25 °C.
6 Preparation for testing
6.2 Test washing machine and reference machine preparation
6.2.1.3 Preparation of the test washing machine for a test series
Replace the second paragraph by:

Any filters shall be thoroughly cleaned before each test series. Prior to the test series (not

less than one day in advance but not more than two week in advance and without any other

run before the test series is started) a cleaning run shall be undertaken on a programme

with the maximum wash temperature set and setting maximum main wash water level if appli-

cable without load and without detergent. After the cleaning run the machine shall stay stand-

ing at the stable laboratory ambient temperature until the test series is finished.

6.2.1.4 Preparation of the test machine for a test run
Replace the second paragraph by:

The test washing machine shall be at laboratory ambient temperature at the beginning of

each test run. It shall be accepted that this requirement has been met if the internal surface

temperature of the test washing machine drum is at ambient air temperature of the test

room, or if the test washing machine has been left open and standing at the stable laborato-

ry ambient temperature for not
...

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