UL 749-2013 UL Standard for Safety Household Dishwashers (Ninth Edition Reprint with revisions through and including May 24 2013)《家用洗碗机》.pdf

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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 749 Household DishwashersUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUC

2、TION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Household Dishwashers, UL 749 Ninth Edition, Dated March 20, 2013 Summary of Topics This revision to ANSI/UL 749 is being issued to incorporate the effective dates for the following clauses originally published March 20, 2013

3、 with effective dates to be determined: Clauses 8.1.5, 8.1.6, 8.3.5, 9.2.6, 18.3.1, 18.7, and 22.11 Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the ma

4、rgin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. The following table lists the future effective dates with the corresponding item. Future Effective Date References May 24, 2016 Clauses 8.1.5, 8.1.6, 8.3

5、.5, 9.2.6, 18.3.1, 18.7, and 22.11. The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated July 1, 2011 and November 30, 2012. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form

6、 by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. In

7、no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advise

8、d of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any lo

9、ss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, except for those paragra

10、phs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the preface. The prior text for requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS no

11、tice. MAY 24, 2013 UL 749 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 24, 2013 UL 749 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Canadian Stan

12、dards Association CSA-C22.2 No. 167-13 Sixth Edition Underwriters Laboratories Inc. UL 749 Ninth Edition Household Dishwashers March 20, 2013 (Title Page Reprinted: May 24, 2013) ANSI/UL 749-2013UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM U

13、L Commitment for Amendments This standard is issued jointly by the Canadian Standards Association (operating as “CSA Group”) and Underwriters Laboratories Inc. (UL). Comments or proposals for revisions on any part of the standard may be submitted to CSA Group or UL at any time. Revisions to this sta

14、ndard will be made only after processing according to the standards development procedures of CSA Group and UL. CSA Group and UL will issue revisions to this standard by means of a new edition or revised or additional pages bearing their date of issue. ISBN 978-1-55491-650-4 2013 CSA Group All right

15、s reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher. This Standard is subject to periodic review, and suggestions for its improvement will be referred to the appropriate committee. To submit a proposal for change, please send

16、 the following information to inquiriescsagroup.org and include “Proposal for change” in the subject line: Standard desgination (number); relevant clause, table, and/or gure number; wording of the proposed change; and rationale for the change. To purchase CSA Group Standards and related publications

17、, visit CSA Groups Online Store at shop.csa.ca or call toll-free 1-800-463-6727 or 416-747-4044. Copyright 2013 Underwriters Laboratories Inc. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in U

18、Ls On-Line Collaborative Standards Development System (CSDS) at http:/. The most recent designation of ANSI/UL 749 as an American National Standard (ANSI) occurred on March 20, 2013. The ANSI approval for this standard does not include the cover page, transmittal pages, title page, superseded requir

19、ements, or the CRG. This ANSI/UL Standard for Safety consists of the Ninth edition. The U.S. Department of Defense (DoD) has adopted UL 749 on August 12, 1994. The publication of revisions or a new edition of this standard will not invalidate the DoD adoption. To purchase UL Standards, visit m-, or

20、call them at 1-888-UL33503 or 1-888-853-3503.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS Preface .6 1 Scope .8 2 Reference publications 8 3 Denitions 17 4 General requirements 20 5 General conditions for the tests .20 5.1 Voltag

21、e and frequency .20 5.2 Cheesecloth for heating and abnormal tests 21 5.3 Test temperature 21 5.4 Thermocouples .21 5.5 Dishwashing detergent .21 5.6 Rinse agent 22 5.7 Place setting 22 5.8 High-sudsing detergent 22 5.9 Water temperature .22 6 Classication .22 7 Marking .22 7.1 General 22 7.2 Applia

22、nce markings 24 8 Instructions 26 8.1 General 26 8.2 Instructions pertaining to a risk of re, electric shock, or injury to persons 28 8.3 Installation instructions .30 8.4 Operating instructions 31 8.5 User-maintenance instructions 31 9 Protection against accessibility to current-carrying parts 31 9

23、.1 General 31 9.2 ENCLOSURES for other than BUILT-IN APPLIANCES 31 9.3 ENCLOSURES for BUILT-IN APPLIANCES .33 9.4 All dishwashers .33 10 Starting of motor-operated appliances .34 11 Power input and current .34 12 Heating .34 13 Leakage current 35 14 Insulation Resistance 36 15 Moisture resistance .3

24、6 15.1 General .36 15.2 Humidity conditioning .37 15.3 Liquid overowing from an auxiliary reservoir 37 15.4 Oversudsing .38 15.5 Liquid spillage all appliances .39 15.6 Liquid spillage portable appliances 40 15.7 Wetting of electrical components .40 16 Electric strength 41 17 Abnormal operation .42

25、17.1 Burnout test on components .42 17.2 Stopped timer 43 17.3 Cord reels .44 18 Stability and mechanical hazards .44 MARCH 20, 2013 CSA-C22.2 NO. 167-13 UL 749 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 18.1 General .44 18.2 Stability

26、 .44 18.3 Sharp edges .45 18.4 Automatic restarting of the motor .45 18.5 Moving parts .45 18.6 Guards, interlocks, and the like 46 18.7 Unintentional operation .47 19 Mechanical strength .47 19.1 General .47 19.2 Frame and ENCLOSURE .48 20 Construction .49 20.1 Current-carrying parts .49 20.2 Botto

27、m openings .50 20.3 Electrical insulation .51 20.4 Thermal insulation 52 20.5 Plumbing requirements 52 21 Internal wiring 52 21.1 General .52 21.2 Splices and connections 54 21.3 Separation of circuits .55 21.4 BARRIERS .55 21.5 Endurance test .56 22 Components .56 22.1 General .56 22.2 Mechanical a

28、ssembly .58 22.3 Capacitors .58 22.4 Field-attached or optional accessories 59 22.5 HEATING ELEMENTS 60 22.6 Lampholders .60 22.7 Motors 61 22.8 Receptacles .62 22.9 Seals and diaphragms 62 22.10 Switches .62 22.11 Controls 64 22.12 Connecting hoses .67 22.13 Transformers and Power Supplies .67 22.1

29、4 Overcurrent protection .68 22.15 Electrically operated valves .68 22.16 Terminals and connectors 68 22.17 Pumps .69 22.18 Insulating devices .69 22.19 Adhesives used to secure parts .69 23 Supply connection and external exible cords 69 23.1 PERMANENTLY CONNECTED APPLIANCES 69 23.2 CORD-CONNECTED A

30、PPLIANCES 71 23.3 Push-back relief 73 23.4 Strain relief 73 23.5 Cord reels .74 23.6 Power-supply cord kits for use with undercounter or built-in dishwashers 74 23.7 Bushings 75 24 Terminals for external conductors .75 25 Provision for grounding 76 25.1 General .76 MARCH 20, 2013 CSA-C22.2 NO. 167-1

31、3 UL 749 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 25.2 Bonding for grounding 77 25.3 Continuity of grounding circuit 79 25.4 Grounding terminals and leads .79 25.5 Heater sheaths 80 26 Screws and connections 81 27 Creepage distances,

32、 clearances, and distances through insulation 81 28 Alternative spacings-clearances and creepage distances 82 29 Resistance to corrosion 83 29.1 General .83 29.2 Liquid containers .83 30 Resistance to heat, re and cracking polymeric materials 83 30.1 General .83 30.2 Horizontal burning rate 84 30.3

33、Flammability .84 30.4 ENCLOSURE ammability large mass consideration 86 30.5 Impact test 86 30.6 Mould stress relief 86 30.7 Immersion .87 30.8 Thermal ageing 87 30.9 Long-term exposure 88 30.10 Endurance .89 30.11 Tensile strength .89 30.12 Tensile impact energy .89 31 Manufacturing and production t

34、ests .90 31.1 Grounding continuity test 90 31.2 Electric strength test 90 Annex A (informative) Translations Note: Annex A replaces Annex B A1 French Translations 1 MARCH 20, 2013 CSA-C22.2 NO. 167-13 UL 749 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PER

35、MISSION FROM UL Preface This is the harmonized CSA Group and UL Standard for Household Dishwashers. It is the sixth edition of CAN/CSA-C22.2 No. 167, and the ninth edition of UL 749. This edition of CSA C22.2 No. 167 supersedes the previous edition published in 2008. This harmonized Standard was pre

36、pared by CSA Group and Underwriters Laboratories Inc. (UL). The efforts and support of the Canadian Appliance Manufacturers Association (CAMA) and the Association of Home Appliance Manufactures (AHAM) are gratefully acknowledged. This Standard is considered suitable for use for conformity assessment

37、 within the stated scope of the Standard. This Standard was reviewed by the CSA Subcommittee on Household Dishwashers, under the jurisdiction of the Technical Committee on Consumer and Commercial Products and the CSA Strategic Steering Committee on Requirements for Electrical Safety, and has been fo

38、rmally approved by the CSA Technical Committee. This standard has been approved by the American National Standards Institute (ANSI) as an American National Standard. Where reference is made to a specic number of samples to be tested, the specied number shall be considered a minimum quantity. Note: A

39、lthough the intended primary application of this standard is stated in its scope, it is important to note that it remains the responsibility of the users of the standard to judge its suitability for their particular purpose. Level of harmonization This standard is published as an identical standard

40、for CSA Group and UL. An identical standard is a standard that is exactly the same in technical content except for national differences resulting from conicts in codes and governmental regulations. Presentation is word for word except for editorial changes. Interpretations The interpretation by the

41、standards development organization of an identical or equivalent standard is based on the literal text to determine compliance with the standard in accordance with the procedural rules of the standards development organization. If more than one interpretation of the literal text has been identied, a

42、 revision is to be proposed as soon as possible to each of the standards development organizations to more accurately reect the intent. CSA Group Effective Date The effective date for CSA Group will be announced through CSA Informs or CSA Group Certication Notice. MARCH 20, 2013 CSA-C22.2 NO. 167-13

43、 UL 749 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Effective Date The effective date for UL is May 24, 2016 for the following clauses: Clauses 8.1.5, 8.1.6, 8.3.5, 9.2.6, 18.3.1, 18.7, and 22.11. A UL effective date is one establish

44、ed by Underwriters Laboratories Inc. and is not part of the ANSI approved standard. MAY 24, 2013 CSA-C22.2 NO. 167-13 UL 749 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Household dishwashers 1 Scope 1.1 This Standard applies to electric

45、 household dishwashers intended to be used in nonhazardous locations in accordance with the Canadian Electrical Code (CEC), Part I, C22.1, General Requirements Canadian Electrical Code (CEC), Part II, C22.2 No. 0-10, and the National Electrical Code (NEC), NFPA 70, on circuits having a nominal volta

46、ge not exceeding 250 V. 1.2 This Standard applies to both CORD-CONNECTED APPLIANCES and PERMANENTLY-CONNECTED APPLIANCES. 1.3 This Standard does not apply to commercial appliances. Commercial appliances are covered under the scope of the Standard for Commercial Dishwashing Machines, CSA C22.2 No. 16

47、8, or the Standard for Commercial Dishwashers, UL 921. 2 Reference publications 2.1 For undated references to standards, such reference shall be considered to refer to the latest edition and all revisions to that edition up to the time when this standard was approved. For dated references to standar

48、ds, such reference shall be considered to refer to the dated edition and all revisions to that edition up to the time when this standard was approved. CSA Group Standards CSA-B64.1.1-01 (part of CAN/CSA-B64 Series-07, Backow preventors and vacuum breakers) Vacuum Breakers, Atmospheric Type (AVB) C22

49、.1-12 Canadian Electrical Code, Part I C22.2 No. 0-10 General Requirements Canadian Electrical Code (CEC), Part II C22.2 No. 0.1-M1985 (R2008) General Requirements for Double-Insulated Equipment C22.2 No. 0.2-93 (R2008) Insulation Coordination C22.2 No. 0.3-09 Test Methods For Electrical Wires and Cables C22.2 No. 0.8-09 Safety Functions Incorporating Electronic Technology C22.2 No. 0.15-01 (R2006) Adhesive Labels CAN/CSA-C22.2 No. 0.17-00 (R2009) Evaluation of Properties of Polymer