UL 471-2001 Commercial Refrigerators and Freezers .pdf

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1、UL 471ISBN 1-55989-923-9Commercial Refrigerators andFreezersUnderwriters Laboratories Inc. (UL)333 Pfingsten RoadNorthbrook, IL 60062-2096UL Standard for Safety for Commercial Refrigerators and Freezers, UL 471Eighth Edition, Dated November 27, 1995Revisions: This Standard contains revisions through

2、 and including November 27, 2001.UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language(SGML). SGML - an international standard (ISO 8879-1986) - is a descriptive markup language thatdescribes a documents structure and purpose, rather than its physical appea

3、rance on a page. Due toformatting differences resulting from the use of ULs new electronic publishing system, please note thatadditional pages (on which no requirements have been changed) may be included in revision pages dueto relocation of existing text and reformatting of the Standard.Text that h

4、as been changed in any manner is marked with a vertical line in the margin. Changes inrequirements are marked with a vertical line in the margin and are followed by an effective date noteindicating the date of publication or the date on which the changed requirement becomes effective.The new and/or

5、revised requirements are substantially in accordance with ULs Bulletin(s) on this subjectdated November 10, 2000 and August 3, 2001. The bulletin(s) is now obsolete and may be discarded.The revisions dated November 27, 2001 include a reprinted title page (page1) for this Standard.As indicated on the

6、 title page (page 1), this UL Standard for Safety is an American National Standard.Attention is directed to the note on the title page of this Standard outlining the procedures to be followedto retain the approved text of this ANSI/UL Standard.As indicated on the title page (page1), this UL Standard

7、 for Safety has been adopted by the Departmentof Defense.The master for this Standard at ULs Northbrook Office is the official document insofar as it relates to aUL service and the compliance of a product with respect to the requirements for that product and service,or if there are questions regardi

8、ng the accuracy of this Standard.ULs Standards for Safety are copyrighted by UL. Neither a printed copy of a Standard, nor the distributiondiskette for a Standard-on-Diskette and the file for the Standard on the distribution diskette should bealtered in any way. All of ULs Standards and all copyrigh

9、ts, ownerships, and rights regarding thoseStandards shall remain the sole and exclusive property of UL.All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, ortransmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwis

10、ewithout prior permission of UL.Revisions of UL Standards for Safety are issued from time to time. A UL Standard for Safety is currentonly if it incorporates the most recently adopted revisions.UL provides this Standard as is without warranty of any kind, either expressed or implied, including butno

11、t limited to, the implied warranties of merchantability or fitness for any purpose.NOVEMBER 27, 2001 UL 471 tr1In no event will UL be liable for any special, incidental, consequential, indirect or similar damages,including loss of profits, lost savings, loss of data, or any other damages arising out

12、 of the use of or theinability to use this Standard, even if UL or an authorized UL representative has been advised of thepossibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid forthis Standard, regardless of the form of the claim.UL will attempt to ans

13、wer support requests concerning electronic versions of its Standards. However, thissupport service is offered on a reasonable efforts basis only, and UL may not be able to resolve everysupport request. UL supports the electronic versions of its Standards only if they are used under theconditions and

14、 operating systems for which it is intended. ULs support policies may change fromtime-to-time without notification.UL reserves the right to change the format, presentation, file types and formats, delivery methods andformats, and the like of both its printed and electronic Standards without prior no

15、tice.Purchasers of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and holdUL harmless from and against any loss, expense, liability, damage, claim, or judgement (includingreasonable attorneys fees) resulting from any error or deviation introduced while purchaser is s

16、toring anelectronic Standard on the purchasers computer system.If a single-user version electronic Standard was purchased, one copy of this Standard may be stored onthe hard disk of a single personal computer, or on a single LAN file-server or the permanent storagedevice of a multiple-user computer

17、in such a manner that this Standard may only be accessed by one userat a time and for which there is no possibility of multiple concurrent access.If a multiple-user version electronic Standard was purchased, one copy of the Standard may be stored ona single LAN file-server, or on the permanent stora

18、ge device of a multiple-user computer, or on an Intranetserver. The number of concurrent users shall not exceed the number of users authorized.Electronic Standards are intended for on-line use, such as for viewing the requirements of a Standard,conducting a word search, and the like. Only one copy o

19、f the Standard may be printed from eachsingle-user version of an electronic Standard. Only one copy of the Standard may be printed for eachauthorized user of a multiple-user version of an electronic Standard. Because of differences in thecomputer/software/printer setup used by UL and those of electr

20、onic Standards purchasers, the printedcopy obtained by a purchaser may not look exactly like the on-line screen view or the printed Standard.An employee of an organization purchasing a UL Standard can make a copy of the page or pages beingviewed for their own fair and/or practical internal use.The r

21、equirements in this Standard are now in effect, except for those paragraphs, sections, tables, figures,and/or other elements of the Standard having future effective dates as indicated in the note following theaffected item. The prior text for requirements that have been revised and that have a futur

22、e effective dateare located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice.New product submittals made prior to a specified future effective date will be judged under all of therequirements in this Standard including those requirements with a specified future effective date

23、, unlessthe applicant specifically requests that the product be judged under the current requirements. However, ifthe applicant elects this option, it should be noted that compliance with all the requirements in thisStandard will be required as a condition of continued Listing, Recognition, Classifi

24、cation, and Follow-UpServices after the effective date, and understanding of this should be signified in writing.Copyright 2001 Underwriters Laboratories Inc.NOVEMBER 27, 2001 UL 471tr2This Standard consists of pages dated as shown in the following checklist:Page Date1-10B .November 27, 200111.Novem

25、ber 27, 199512 .April 9, 199913-14 .November 27, 200114A.April 9, 199914B-15 .April 27, 199816-18B.November 27, 200119.April 27, 199820-24 .November 27, 199525-26B.November 27, 200127.November 27, 199528-30 .November 27, 200131-32 .November 27, 199533 .April 9, 199934-35 .November 27, 199536.April 2

26、7, 199837.November 27, 199538-40A.November 27, 200140B.April 27, 199841-42B .April 9, 199943-44 .November 27, 199545-46B.November 27, 200147.November 27, 199548-49 .February 3, 199850.November 27, 199551.November 27, 200152.April 27, 199852A.April 9, 199952B.April 27, 199853-56B .April 9, 199957-58

27、.November 27, 199559 .April 9, 199960-63 .November 27, 199564 .February 3, 199865-66 .June 24, 199767-68 .April 9, 199969.November 27, 199570 .April 9, 199971.November 27, 199572-74B.November 27, 200175 .April 9, 199976-78 .November 27, 199579-80B.November 27, 200181 .April 9, 199982-83 .November 27

28、, 199584-85 .April 9, 199986-87 .November 27, 200188-90B .April 9, 199991-93 .November 27, 1995NOVEMBER 27, 2001 UL 471 tr394 .April 9, 199995-96 .November 27, 199597-98B .April 9, 199999.June 24, 1997100-102 .November 27, 1995103-104 .August 2, 1996105.November 27, 1995106.April 27, 1998107.Novembe

29、r 27, 1995108-110 .November 27, 2001111-112 .November 27, 1995113-114B.November 27, 2001115.November 27, 1995116-116B.November 27, 2001117-122 .November 27, 1995123.April 9, 1999124.November 27, 1995SA1-SA3 .November 27, 1995SA4-SA6 .November 27, 2001A1-A2 .February 3, 1998CRG1-CRG8.February 3, 1998

30、NOVEMBER 27, 2001 UL 471tr4NOVEMBER 27, 1995(Title Page Reprinted: November 27, 2001)1UL 471Standard for Commercial Refrigerators and FreezersThe First through Third editions were titled Standard for CommercialRefrigerators.First Edition October, 1957Second Edition June, 1962Third Edition May, 1973F

31、ourth Edition September, 1975Fifth Edition May, 1978Sixth Edition January, 1985Seventh Edition July, 1992Eighth EditionNovember 27, 1995The most recent designation of ANSI/UL 471 as an American National Standard(ANSI) occurred on September 6, 1996.This ANSI/UL Standard for Safety is under periodic m

32、aintenance, whereby theANSI approval is updated approximately every five years. The eighth edition isANSI approved; other revisions are not part of the ANSI designated text. Toobtain a copy of the originally approved ANSI version of the Standard, contactcomm 2000 at m-.An effective date included as a note immediately following certain requirementsis one established by Underwriters Laboratories Inc. and is not part of the ANSIapproved standard.The Department of Defense (DoD) has adopted UL 471 on March 23, 1976. Thepublication of revised pages or a new edition of this Standard will no