1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 763 Motor-Operated Commercial Food Preparing MachinesUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUT
2、HORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Motor-Operated Commercial Food Preparing Machines, UL 763 Fourth Edition, Dated January 31, 2012 Summary of Topics This revision to ANSI/UL 763 dated September 24, 2014 were issued to incorporate t
3、he following changes in requirements: Filtered Ventilation Openings Leakage Current Limit for Stationary Ice/Beverage Dispensers with EMI Suppression Filtering Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Chang
4、es in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. The new and revised requirements are substantially in accordance with Proposal(s) on this sub
5、ject dated November 15, 2013 and April 18, 2014. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this St
6、andard 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 no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lo
7、st 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 advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standar
8、d, 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 loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation
9、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 paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the note foll
10、owing the affected item. 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 notice. SEPTEMBER 24, 2014 UL 763 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR
11、DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 24, 2014 UL 763 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 31, 2012 (Title Page Reprinted: September 24, 2014) 1 UL 763 Standard for Motor-Operated Commer
12、cial Food Preparing Machines First Edition January, 1985 Second Edition October, 1993 Third Edition November, 2000 Fourth Edition January 31, 2012 This ANSI/UL Standard for Safety consists of the Fourth edition including revisions through September 24, 2014. The most recent designation of ANSI/UL 76
13、3 as an American National Standard (ANSI) occurred on September 24, 2014. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. The Department of Defense (DoD) has adopted UL 763 on October 3, 1994. The publication of revised page
14、s or a new edition of this Standard will not invalidate the DoD adoption. 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 ULs On-Line Collaborative Standards Development System (CSDS) at http:
15、/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2014 UNDERWRITE
16、RS LABORATORIES INC. ANSI/UL 763-2014UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 24, 2014 MOTOR-OPERATED COMMERCIAL FOOD PREPARING MACHINES - UL 763 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRO
17、DUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .6 2 Terminology 6 3 Glossary .7 4 Units of Measurement .8 5 References .8 CONSTRUCTION 6 Components 8 6.1 General .8 6.2 Attachment plugs, receptacles, connectors, and terminals .9 6.3 Capacitors and lters 10 6.4 Contr
18、ols 11 6.5 Cords, cables, and internal wiring .14 6.6 Cord reels 15 6.7 Field wiring boxes and raceways 15 6.8 Heating elements 15 6.9 Lampholders, indicating lamps and lighting ballasts 16 6.10 Motors 16 6.11 Motor overload protection .17 6.12 Overcurrent protection 19 6.13 Polymeric materials and
19、enclosures 20 6.14 Power supplies .20 6.15 Printed wiring boards .21 6.16 Semiconductors, relays and small electrical and electronic components .21 6.17 Solenoids and electrically operated valves .21 6.18 Supplemental insulation, insulating bushings and assembly aids .22 6.19 Switches, timers and in
20、terlocks 22 6.20 Transformers .24A 6A Field Attached Accessories .24A 7 Frame and Enclosure .24B 8 Mechanical Assembly 29 9 Protection Against Corrosion 30 10 Accessibility of Live Parts 32 11 Supply Connections .36 11.1 Cord-connected machines .36 11.2 Permanently connected machines 40 12 Current-C
21、arrying Parts 42 13 Insulating Material 42 14 Internal Wiring 43 14.1 Mechanical protection 43 14.2 Splices and connections 44 15 Grounding .44 15.1 General .44 15.2 Grounding identication .46 16 Spacings 46 17 Alternate Spacings Clearances and Creepage Distances 48 18 Flooding of Live Parts 48A SEP
22、TEMBER 24, 2014 MOTOR-OPERATED COMMERCIAL FOOD PREPARING MACHINES - UL 763 2AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 18A Air Filters .48A PROTECTION AGAINST INJURY TO PERSONS 19 General 48B 20 Sharp Edges 48B 21 Enclosures and Guards
23、 49 22 Materials .52 23 Rotating or Moving Members .52 24 Parts Subject to Pressure 52 25 Pressure Relief Devices .53 26 Switches, Controls, and Interlocks 54 27 Liquid Mixing and Blending Machine 56 28 Wand-type Mixers 57 29 Stability 57 PERFORMANCE 30 General 58 31 Starting Current Test 59 32 Inpu
24、t Test 59 33 Normal Temperature Test 59 33.1 General .59 33.2 Meat saws and meat slicers .63 33.3 Meat choppers and meat grinders 64 33.4 Meat tenderizers .64 33.5 Ice crushers .64 33.6 Ice dispensers .64 33.7 Liquid dispensers 64 33.8 Vegetable shredder-slicers 65 33.9 Bread slicers .65 33.10 Food
25、mixers 65 33.11 Coffee grinders and coffee mills .66 33.12 Food cutters and food slicers .66 33.13 Food mixers-grinders 66 33.14 Food processors 66 33.15 Potato peelers 67 33.16 Churns .67 33.17 Dough rollers, molders, and dividers .68 33.18 Liquid mixers spindle type 68 33.19 Vegetable trimmers 68
26、33.20 Blending mixers .69 33.21 Can openers .70 33.22 Wand-type mixers .70 33.23 Centrifugal juicers .70 33.24 Reamer (citrus) juicers .70 34 Dielectric Voltage-Withstand Test .71 35 Leakage Current Test .72 36 Leakage Current Following Humidity Conditioning Test 75 37 Overspeed Test 75 38 Flooding
27、of Live Parts Tests .75 39 Wand-type Mixer Moisture Resistance Test 76 40 Blender Cover Opening Splash Test 76 SEPTEMBER 24, 2014 MOTOR-OPERATED COMMERCIAL FOOD PREPARING MACHINES - UL 763 2BUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 41
28、 Test for Deterioration of Parts Subject to Flexing .77 42 Test for Parts Not Subject to Flexing 77 43 Insulation Resistance Test .78 44 Hydrostatic Pressure Test .78 45 Switch Overload Test .79 46 Interlock System Endurance Test .80 46A Wiring Flexing Test 80 47 Strain Relief Test 80A 48 Stability
29、Test 80A 49 Abnormal Operation Test 81 49A Abnormal Filter Blockage Test 81 50 Water Spray Test .82 51 Adequacy of Mounting Test 84 52 Mold Stress-Relief Distortion Test .86 53 Permanence of Marking Tests 86 53A Accessory Installation Test .86 MANUFACTURING AND PRODUCTION-LINE TESTS 54 Dielectric Vo
30、ltage-Withstand 86A 55 Continuity Tests 88 55.1 Grounding .88 55.2 Polarization 88 55.3 Electrical indicating device .89 RATINGS 56 Details .89 MARKINGS 57 Details .89 57.1 General .89 57.2 Permanently connected machines 90 57.3 Components .91 57.4 Cautionary marking .91 57.5 Attachment and accessor
31、y marking .92 57.6 Specic machine markings 92 57.7 Machines in protected locations 93 58 Accessory Installation Instructions 93 59 Instructions 93 SEPTEMBER 24, 2014 MOTOR-OPERATED COMMERCIAL FOOD PREPARING MACHINES - UL 763 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIB
32、UTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover commercial motor-operated food-preparing machines intended for use in accordance with the National Electrical Code. 1.2 These requirements do not cover machines rated more than 600 V; nor do they cover machines involv
33、ing universal motors rated more than 250 V. 1.3 These requirements cover coffee grinders, vegetable cutters, food mixers, nonrefrigerated ice cube dispensers, and other motor-operated machines usually found in commercial kitchens, restaurants, food processing establishments, bakeries, or other busin
34、ess establishments where food is prepared or processed. 1.4 A machine that utilizes some other source of energy, such as gas or steam, in addition to electric energy will be investigated under these requirements and under such additional requirements as are applicable to the machine under considerat
35、ion. 1.5 A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and that involves a risk of re or of electric shock or injury to persons shall be evaluated using appropriate additional component a
36、nd end-product requirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems conict with specic requirements or provisions of this standard does not comply with this standard. Revisi
37、on of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard. 2 Terminology 2.1 In the following text, a requirement that applies only to a specic type or types of commercial food-preparing machine is identie
38、d by a specic reference in the requirement to the type or types of machine involved. Absence of such a specic reference or use of the term machine indicates that the requirement applies to all of the types of equipment covered by this standard. JANUARY 31, 2012 MOTOR-OPERATED COMMERCIAL FOOD PREPARI
39、NG MACHINES - UL 763 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3 Glossary 3.1 For the purpose of this standard the following denitions apply. 3.2 APPLIANCE COUPLER A single-outlet, female contact device for attachment to a exible cord
40、 as part of a detachable power-supply cord to be connected to an appliance inlet (motor attachment plug). 3.3 APPLIANCE INLET (Motor Attachment Plug) A male contact device mounted on an end product appliance to provide an integral blade conguration for the connection of an appliance coupler or cord
41、connector. 3.4 APPLIANCE (FLATIRON) PLUG An appliance coupler type of device having a cord guard and a slot conguration specied for use with heating or cooking appliances. 3.5 AUTOMATICALLY CONTROLLED MACHINE A machine is considered to be automatically controlled under any one or more of the followi
42、ng conditions if: a) The repeated starting of the machine, beyond one complete predetermined cycle of operation to the point where some form of limit switch opens the circuit, is independent of any manual control. b) During any single predetermined cycle of operation, the motor is caused to stop and
43、 restart one or more times. c) Upon energizing the machine, the initial starting of the motor may be intentionally delayed beyond normal, conventional starting. d) During any single predetermined cycle of operation, automatic changing of the mechanical load may reduce the motor speed sufficiently to
44、 reestablish starting-winding connections to the supply circuit. 3.6 COMPONENT A device or fabricated part of the appliance covered by the scope of a safety standard dedicated to the purpose. When incorporated in an appliance, equipment otherwise typically eld installed (e.g. luminaire) is considere
45、d to be a component. Unless otherwise specied, materials that compose a device or fabricated part, such as thermoplastic or copper, are not considered components. 3.7 CONTROL, OPERATING A device or assembly of devices, the operation of which starts or regulates the end product during normal operatio
46、n. Operating controls are also referred to as regulating controls . 3.8 CONTROL, PROTECTIVE A device or assembly of devices, the operation of which is intended to reduce the risk of electric shock, re or injury to persons during normal and reasonably anticipated abnormal operation of the appliance.
47、Protective controls are also referred to as limiting controls and safety controls . 3.9 ENCLOSURE That part of the machine that: a) Renders inaccessible all or any parts of the equipment that involve a risk of electric shock or injury to persons, or b) Precludes propagation of ame initiated by elect
48、rical disturbances occurring within. JANUARY 31, 2012 MOTOR-OPERATED COMMERCIAL FOOD PREPARING MACHINES - UL 763 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.10 INDOOR LOCATION Inside a building where not normally subjected to the effe
49、cts of weathering. 3.11 INTERLOCK A device or arrangement by means of which the functioning of one part is controlled by the functioning of another, for safety purposes. 3.12 LINE-VOLTAGE CIRCUIT A circuit involving a potential of not more than 600 V and having circuit characteristics in excess of those of a low-voltage circuit. 3.13 LOW-VOLTAGE CIRCUIT A circuit involving a peak open-circuit potential of not more than 42.4 V supplied by a primary battery, by a Class 2 t
