Report on the CECED dishwasher ringtest - Institut für Landtechnik ...

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1 Introduction CECED DW Ringtest The European Energy Label indicates the effectiveness of electrical household appliances to consumers (see 92/75/EEC). In the cases of dishwashers their cleaning and drying performance are shown as well as the resources used. The declaration is based on the European Norm EN 50242: Electric dishwashers for household use: methods for measuring the performance, which gives detailed instruction concerning the testing of the cleaning, drying, noise emission and resource consumption. However, the latest revision of this standard (EN 50242prA3:2002) has never been tested for its reproducibility. Therefore CECED, the European association of appliance manufacturers, initiated the dishwasher ring-test as an European agreement of manufacturers and independent laboratories. The ringtest not just aims to determine the reproducibility of the norm, but also tries to facilitate expert knowledge within the involved laboratories. Gathering experiences made during the tests, it will help to reveal different interpretations of details and maybe point out missing parts of the standard. Unlike earlier tests, this ringtest allowed a high number of laboratories to participate, regardless of their experience. 4
2 Organisation CECED DW Ringtest The Ringtest is coordinated by University of Bonn, Section of Household and Appliance technology, with technical support from the Ringtest machine manufacturers, namely the dishwasher development departments of AEG/Electrolux Nürnberg and BSH Dillingen. 2.1 Objectives The CECED Ringtest aims to verify the improvements in the latest revision of EN 50242. To evaluate repeatability and reproducibility of the invoked tests several European laboratories undergo the testing procedure. Any participating laboratory is asked to perform standard-conform tests, i.e. dishwasher cleaning and drying tests as described, exactly following the instructions. To get an overview on the different laboratory conditions and working practises, a questionnaire was sent to the participants. Data asked for was for example the laboratory equipment, that is the measurement devices, reference machines, soils used and further information. The standard tests are to be carried out with two dishwasher models, one of higher and one of lower performance (see 3.1). A minor objective is to perform noise emission test according to 60704-2-3, where facilities provide the equipment. 2.2 Actions The following actions have been undertaken (in chronological order): • Construction of the Ringtest machines • Grouping of the participants into tiers • Coordination of testing and transports • Arranging visits between labs • First evaluation meeting after gathering results from 15 labs in Bonn (July 2003) • Data evaluation and analysis • Second evaluation meeting in Bonn (October 2003) • Final evaluation and report release 5
Page 1 and 2: Section of Appliance and Household
Page 3 and 4: CONTENTS CECED DW Ringtest Contents
Page 5: LIST OF TABLES CECED DW Ringtest Li
Page 9 and 10: 3 Participants and tiers CECED DW R
Page 11 and 12: 3.3 Minutes of the first evaluation
Page 13 and 14: 3.4 Minutes of the final evaluation
Page 15 and 16: 3.4 Minutes of the final evaluation
Page 17 and 18: 4.5 Pretests CECED DW Ringtest Figu
Page 19 and 20: 5.1 Energy Label classification CEC
Page 21 and 22: 5.1 Energy Label classification CEC
Page 23 and 24: 5.2 Cleaning CECED DW Ringtest Tabl
Page 25 and 26: 5.2 Cleaning CECED DW Ringtest clea
Page 27 and 28: 5.3 Drying CECED DW Ringtest Table
Page 29 and 30: 5.4 Energy CECED DW Ringtest Energy
Page 31 and 32: 5.5 Verification of laboratory cond
Page 33 and 34: 6 Analysis CECED DW Ringtest Determ
Page 35 and 36: 6.3 Repeatability and Reproducibili
Page 37 and 38: A Results of ringtest no.3 The clea
Page 39 and 40: cleaning index cleaning index, hard
Page 41 and 42: drying index, hum.% Drying index, h
Page 43: References CECED DW Ringtest EN 502

Report on the CECED dishwasher ringtest - Institut für Landtechnik ...

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