1、NSF International Standard / American National StandardNSF/ANSI 3 - 2012 Commercial Warewashing Equipment NSF International, an independent, not-for-profit, non-governmental organization, is dedicated to being the leading global provider of public health and safety-based risk management solutions wh
2、ile serving the interests of all stakeholders. This Standard is subject to revision. Contact NSF to confirm this revision is current. Users of this Standard may request clarifications and inter-pretations, or propose revisions by contacting: Chair, Joint Committee on Food Equipment c/o NSF Internati
3、onal 789 North Dixboro Road, P.O. Box 130140 Ann Arbor, Michigan 48113-0140 USA Phone: (734) 769-8010 Telex: 753215 NSF INTL FAX: (734) 769-0109 E-mail: infonsf.org Web: http:/www.nsf.orgi NSF International Standard/ American National Standard for Food Equipment Commercial warewashing equipment Stan
4、dard Developer NSF International NSF International Designated as an ANSI Standard August 8, 2012 American National Standards Institute ii Recommended for Adoption by The NSF Joint Committee on Food Equipment The NSF Council of Public Health Consultants Adopted by The NSF Board of Directors May 1953
5、Revised April 1965 Revised November 1977 Revised June 1982 Revised July 1996 Revised May 2001 Revised April 2003 Revised November 2005 Revised March 2007 Revised April 2008 Revised April 2009 Revised November 2010 Revised August 2012 Published by NSF International PO Box 130140, Ann Arbor, Michigan
6、48113-0140, USA For ordering copies or for making inquiries with regard to this Standard, please reference the designation “NSF/ANSI 3 2012.“ Copyright 2012 NSF International Previous Editions 2010, 2009, 2008, 2007, 2005, 2003, 2001, 1996, 1982, 1977, 1965 Unless otherwise specified, no part of thi
7、s publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from NSF International. Printed in the United States of America. iii Disclaimers1NSF, in performing its functions in accordance with
8、its objectives, does not assume or undertake to discharge any responsibility of the manufacturer or any other party. The opinions and findings of NSF represent its professional judgment. NSF shall not be responsible to anyone for the use of or reliance up-on this Standard by anyone. NSF shall not in
9、cur any obligation or liability for damages, including consequential damages, arising out of or in connection with the use, interpretation of, or reliance upon this Standard. NSF Standards provide basic criteria to promote sanitation and protection of the public health. Provisions for mechanical and
10、 electrical safety have not been included in this Standard because governmental agencies or other national standards-setting organizations provide safety requirement. Participation in NSF Standards development activities by regulatory agency representatives (federal, local, state) shall not constitu
11、te their agencys endorsement of NSF or any of its Standards. Preference is given to the use of performance criteria measurable by examination or testing in NSF Standards development when such performance criteria may reasonably be used in lieu of design, materials, or construction criteria. The illu
12、strations, if provided, are intended to assist in understanding their adjacent standard requirements. However, the illustrations may not include all requirements for a specific product or unit, nor do they show the only method of fabricating such arrangements. Such partial drawings shall not be used
13、 to justify improper or incomplete design and construction. Unless otherwise referenced, the annexes are not considered an integral part of NSF Standards. The annexes are provided as general guidelines to the manufacturer, regulatory agency, user, or certifying organization. 1The information contain
14、ed in this Disclaimer is not part of this American National Standard (ANS) and has not been processed in accordance with ANSIs requirements for an ANS. Therefore, this Disclaimer may contain material that has not been subjected to public review or a consensus process. In addition, it does not contai
15、n requirements neces-sary for conformance to the Standard. iv This page is intentionally left blank.v Contents 1 General . 1 1.1 Purpose 1 1.2 Scope . 1 1.3 Alternate materials, design, and construction 1 1.4 Measurement . 1 2 Normative references . 1 3 Definitions . 2 4 Materials . 2 4.1 Corrosion
16、resistance 2 4.2 Smoothness and cleanability . 2 4.3 Coatings . 2 4.4 Solder . 3 4.5 Copper water lines . 3 5 Design and construction . 3 5.1 General sanitation 3 5.2 Joints and seams . 3 5.3 Reinforcing and framing . 3 5.4 Inspection and maintenance panels 4 5.5 Louvers 4 5.6 Equipment mounting 4 5
17、.7 Legs and feet . 4 5.8 Temperature indicating devices . 5 5.9 Plumbing connections 5 5.10 Thermostatic control 5 5.11 Separation of residual food waste . 6 5.12 Pumps 6 5.13 Spray assemblies 6 5.14 Racks . 6 5.16 Pressure gauges . 7 5.17 Condensers and blowers . 7 5.18 Curtains and similar devices
18、 7 5.19 Rinse aid, detergent, and chemical sanitizer feeders . 7 5.20 Additional design and construction requirements for specific machine designs . 8 6 Performance . 9 6.1 Soil removal . 9 6.2 Sanitization efficacy . 14 6.3 Thermostat differential . 20 7 Manufacturers specifications . 20 7.1 Hot wa
19、ter sanitizing machines . 20 7.2 Chemical sanitizing machines 21 7.3 Equipment labeling . 22 7.4 Manufacturers instructions 22 vi 8 Warewashing equipment provided with a security package 22 8.1 General 23 8.2 Special tools . 23 8.3 Fastening methods . 23 8.4 Drawers 23 8.5 Labeling 23 9 Warewashing
20、equipment for use in marine environments . 23 9.1 Materials . 23 9.2 Design and construction. 24 Annex A A1 Annex B B1 vii Foreword2The purpose of this Standard is to establish minimum public health and sanitation requirements for the materials, design, construction, and performance of commercial sp
21、ray-type dishwashing, glasswashing, and pot, pan, and utensil washing machines. The Standard covers commercial dishwashing, glasswashing, and pot, pan, and utensil washing machines that wash their contents by applying sprays of detergent solutions and sanitize their contents by applying either hot w
22、ater sprays or chemical sanitizing solutions. Both stationary rack and conveyor machines are covered by the scope of this Standard. All equipment previously covered by NSF 26 1980: Pot, pan, and utensil commercial spray-type washing machines is also covered by the scope of this Standard. This editio
23、n of the Standard contains the following revision: Issue 11 This revision updated the Normative References and boilerplate language in: 1.4 Measurement; and 6.2 Cleaning and sanitization procedures. This Standard was developed by the NSF Joint Committee on Food Equipment using the consensus process
24、described by the American National Standards Institute. Suggestions for improvement of this Standard are welcome. Comments should be sent to Chair, Joint Committee on Food Equipment at standardsnsf.org, or c/o NSF International, Standards Department, P.O. Box 130140, Ann Arbor, Michigan 48113-0140,
25、USA. 2The information contained in this Foreword is not part of this American National Standard (ANS) and has not been processed in accordance with ANSIs requirements for an ANS. Therefore, this Foreword may contain material that has not been subjected to public review or a consensus process. In add
26、ition, it does not contain requirements necessary for conformance to the Standard. This page is intentionally left blank.1 2012 NSF NSF/ANSI 3 2012 NSF/ANSI Standard for Food Equipment Commercial warewashing equipment 1 General 1.1 Purpose This Standard establishes minimum public health and sanitati
27、on requirements for the materials, design, construction, and performance of commercial warewashing machines and their related components. 1.2 Scope This Standard applies to commercial dishwashing, glasswashing, and pot, pan, and utensil washing machines that wash their contents by applying sprays of
28、 detergent solutions with or without blasting media granules, and sanitize their contents by applying sprays of hot water or chemical sanitizing solutions. Stationary rack and conveyor machines are covered under this Standard. Equipment components and materials covered under other NSF or NSF/ANSI St
29、andards or criteria shall also comply with the requirements therein. This Standard is not intended to restrict new unit design, provided that such design meets the minimum specifications described herein. 1.3 Alternate materials, design, and construction While specific materials, design, and constru
30、ction may be stipulated in this Standard, equipment that incorporates alternate materials, design, or construction may be acceptable when such equipment meets the intent of the applicable requirements herein. 1.4 Measurement Decimal and SI conversions provided parenthetically shall be considered equ
31、ivalent. Metric conversions and significant figure rounding have been made according to IEEE/ASTM SI 10. 2 Normative references The following documents contain provisions that, through reference, constitute provisions of this NSF/ANSI Standard. At the time this Standard was balloted, the editions li
32、sted below were valid. All documents are subject to revision, and parties are encouraged to investigate the possibility of applying the recent editions of the documents indicated below. The most recent published edition of the document shall be used for undated references. 40 C.F.R. 180.940 Toleranc
33、e exemptions for active and inert ingredients for use in antimicrobial formulations (Food-Contact Surface Sanitizing Solutions)3ANSI/ASSE 1001 2008. Atmospheric Type Vacuum Breakers43U. S. Government Printing Office, Washington, DC 20402. . 4ASSE International Office, 901 Canterbury, Suite A, Westla
34、ke, OH 44145. . 2012 NSF NSF/ANSI 3 2012 2 ANSI/ASSE.1004 2008. Backflow Prevention Requirements for Commercial Dishwashing Machines4 APHA, Standard Methods for the Examination of Dairy Products, seventeenth edition5 APHA, Standard Methods for the Examination of Water and Wastewater, twenty-first ed
35、ition5IAPMO Uniform Plumbing Code 20096ICC International Plumbing Code 20097IEEE/ASTM SI 10 2010. American National Standard for Metric Practice8NSF/ANSI 29. Detergent and chemical feeders for commercial spray-type dishwashing machines NSF/ANSI 170. Glossary of food equipment terminology 3 Definitio
36、ns Terms used in this Standard that have special technical meaning are defined in NSF/ANSI 170. 4 Materials The requirements contained in this section are intended to ensure that the materials used in the manufacture of warewashing machines resist wear and penetration by vermin (insulation in sealed
37、, non-food zone enclosures is exempt) and are unaffected by detergents, sanitizers, and other substances present in the intended use environment. 4.1 Corrosion resistance Exposed surfaces shall be corrosion-resistant in the intended use environment. Surfaces, other than interior surfaces exposed to
38、wash and rinse water, may be rendered corrosion-resistant by the application of a coating or coatings. Coatings conforming to NSF/ANSI 51, as applied, may be used to render a material corrosion resistent. NOTE Materials that are worked (e.g., bent, cut, sheared, extruded, drawn) during equipment man
39、ufacture may require additional treatment following fabrication in order to render them corrosion-resistant. 4.2 Smoothness and cleanability Exposed surfaces shall be smooth and easily cleanable. Interior surfaces repeatedly exposed to wash water, rinse water, or both are not required to be smooth.
40、4.3 Coatings 4.3.1 Coatings containing lead as an intentional ingredient shall not be used. Coatings with an unintentional lead content (lead impurity) greater than 0.06% shall not be used. 5American Public Health Association, 800 I Street, NW, Washington, DC 20001. . 6International Association of P
41、lumbing and Mechanical Officials, 5001 E. Philadelphia St., Ontario, CA 91761. . 7International Code Council, 5203 Leesburg Pike, Suite 600; Falls Church, VA 22041. . 8ASTM International, 100 Barr Harbor Dr., West Conshohocken, PA 19428. . 2012 NSF NSF/ANSI 3 2012 3 4.3.2 Coatings shall resist crack
42、ing and chipping under use conditions. 4.4 Solder Solder containing lead as an intentional ingredient shall not be used on surfaces in contact with wash water or rinse water. 4.5 Copper water lines Copper water lines shall not pass through a machine tank. They shall not be used in any recirculating
43、system or be in contact with solutions of detergents, chemical sanitizers, or other chemicals. Copper water lines are exempt from the corrosion resistance requirement in 4.1. 5 Design and construction This section contains design and construction requirements for equipment covered within the scope o
44、f this Standard. 5.1 General sanitation 5.1.1 Equipment shall be designed and manufactured to prevent the harborage of vermin and the accumulation of dirt and debris, and to permit the inspection, maintenance, servicing, and cleaning of the equipment and its components. 5.1.2 Surfaces exposed to was
45、h water, rinse water, routine splashes, spills, or other soiling shall be readily accessible and easily cleanable. Additional access openings shall be provided when the installation of a equipment would otherwise prevent these surfaces from being readily accessible and easily cleanable. Valves and p
46、ipes shall not obstruct access openings or interfere with cleaning. 5.1.3 Equipment parts and components that require removal for routine equipment operation or cleaning shall be readily removable. NOTE Safety devices required by federal, state, or local regulations are not required to be readily re
47、movable. 5.2 Joints and seams 5.2.1 Permanent joints and seams in a tank shall be sealed and smooth. Tanks shall be of integral construction or integrally welded. 5.2.2 Permanent joints and seams, other than those in the tank, shall be sealed. Joints made by overlapping sheets of metal shall not cre
48、ate upward-facing horizontal ledges. 5.2.3 Permanent joints and seams that result from the installation of functional parts, baffles, and accessories, or from the joining of machine components, shall be readily accessible and easily cleanable. 5.3 Reinforcing and framing 5.3.1 Exposed reinforcing an
49、d framing members and gussets shall be easily cleanable. Reinforcing and framing members shall be designed and manufactured to prevent the harborage of vermin. 5.3.2 Horizontal surfaces of reinforcing and framing members and gussets shall not be located where debris may accumulate. 2012 NSF NSF/ANSI 3 2012 4 5.3.3 Vertical channels that form hollow sections shall be closed at each end, open at each end, or readily accessible along the entire channel. All other hollow sections shall be closed at each end. 5.4 Inspection and maintenance panels Wh
