1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 399 Drinking Water Coolers STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED
2、 FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Drinking-Water Coolers, UL 399 Eighth Edition, Dated March 30, 2017 SUMMARY OF TOPICS This revision of ANSI/UL 399 is being issued to incorporate the following changes: Editorial revision to 21.24, 21.25,
3、 21.26, and 21.30 to correct the cross references to 21.23. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or tran
4、smitted in any form 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 f
5、or any purpose. In 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 representat
6、ive 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 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
7、 and against any loss, 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. MAY 17, 2017 UL 399 tr1UL COPYRIGHTED MATERIAL NOT AUTHORI
8、ZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 17, 2017 UL 399 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL March 30, 2017 (Title Page Reprinted: May 17, 2017) 1 UL 399 Standard for Dri
9、nking-Water Coolers First Edition December, 1956 Second Edition November, 1968 Third Edition September, 1972 Fourth Edition July, 1978 Fifth Edition July, 1987 Sixth Edition June, 1993 Seventh Edition August, 2008 Eighth Edition March 30, 2017 This ANSI/UL Standard for Safety consists of the 8th Edi
10、tion including revisions through May 17, 2017. The most recent designation of ANSI/UL 399 as an American National Standard (ANSI) occurred on March 30, 2017. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, and Title Page. Any other portions of this ANSI/UL standard t
11、hat were not processed in accordance with ANSI/UL requirements are noted at the beginning of the impacted sections. 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 St
12、andards Development System (CSDS) at https:/. 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 exclusiv
13、e property of UL. COPYRIGHT 2017 UNDERWRITERS LABORATORIES INC. ANSI/UL 399-2017UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 30, 2017 DRINKING WATER COOLERS - UL 399 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR F
14、URTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .8 2 Units of measurement .8 3 Undated references .9 4 Reserved for future use 9 5 Glossary .9 6 Installation And Operating Instructions 13 CONSTRUCTION 7 General .14 8 Nonmetallic Material 15 8.1 Classicati
15、on 15 8.2 Ignition Sources .16 8.3 Application and Location .20 9 Assembly .20 9.1 General 20 9.2 Pressurized beverage product system .20 9.3 Mechanical protection 21 9.4 Electrical protection 22 10 Barriers 27 11 Accessories 27 12 Enclosures .28 12.1 General .28 12.2 Doors and covers 31 12.3 Enclos
16、ures exposed to weather 32 13 Field Supply Connections for Permanently Connected Water Coolers .34 13.1 General .34 13.2 Terminals .35 13.3 Leads .36 13.4 Grounding .37 14 Supply Connections Cord Connected Equipment .38 15 Internal Wiring And Wiring Methods .40 16 Separation of Circuits .45 17 Bondi
17、ng for Grounding 46 18 Button or Coin Cell Batteries .48 ELECTRICAL COMPONENTS 19 Current-Carrying Parts 49 20 Insulating Material 49 21 Switches And Controllers 49 22 Remotely Operated Water Coolers 55 23 Motors .56 24 Motor Overload Protection .59 24.1 General .59 24.2 Protection of single-phase n
18、onhermetic motors 59 24.3 Protection of single-phase hermetic refrigerant motor-compressors .60 24.4 Protection of three-phase motors .61 MARCH 30, 2017 DRINKING WATER COOLERS - UL 399 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 24.5 Pr
19、otective electronic circuits .61 25 Electric Water Heaters 63 25.1 Heater elements .63 25.2 Water heater thermal cutoffs .64 26 Valves and Solenoids .64 27 Capacitors .64 28 Transformers .65 29 Batteries and Battery Chargers .65 30 Circuit Breakers, Fusing Resistors and Supplementary Protectors 66 3
20、1 Connectors 66 32 Electrical Cable, Conduit and Tubing 66 33 Electrical Insulation Systems .67 34 Electromagnetic Interference Filters .67 35 Fuses and Fuseholders 67 36 Lighting Systems .68 37 Optical Isolators and Semiconductor Devices 69 38 Outlet Boxes .69 39 Power Supplies .69 40 Receptacles 7
21、0 41 Terminal Blocks 70 42 Wireways, Auxiliary Gutters and Associated Fittings 70 43 Ultraviolet (UV) Radiation Systems 71 44 Across-The-Line Capacitors, Antenna-Coupling Components, Line-Bypass Components and Fixed Capacitors for Use in Electronic Equipment 71 45 Information Technology Equipment .7
22、2 SPACINGS 46 High-Voltage Circuits 72 47 Extra Low-Voltage Circuits .74 48 Alternate Spacings Clearances and Creepage Distances 74 REFRIGERATION SYSTEM 49 Refrigerant .75 50 Pump-Down Capacity .76 51 Refrigerant Tubing and Fittings .76 52 Refrigerant-Containing Parts .77 53 Pressure-Limiting Device
23、 78 54 Pressure Relief .78 54.1 General .78 54.2 Required discharge capacity .79 54.3 Relief valves .79 THERMOELECTRIC SYSTEM 55 General 80 WATER SYSTEM 56 Pressure Relief .80 PERFORMANCE MARCH 30, 2017 DRINKING WATER COOLERS - UL 399 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION
24、OR DISTRIBUTION WITHOUT PERMISSION FROM UL 57 General 81 57.1 Instrumentation 81 57.2 Ambient temperature .82 58 Tests on Nonmetallic Materials .82 58.1 General .82 58.2 Burnout test Impedance protected motors .83 58.3 Fastener strength test 84 59 Test Voltage .85 60 Leakage Current Test Cord Connec
25、ted Water Coolers 85 61 Input Test 88 62 Temperature and Pressure Test 89 63 Dielectric Voltage-Withstand Test .93 64 Condenser Fan Motor Failure Test 94 65 Condenser Water Failure Test 95 66 Overow Test 95 67 Spill Test 96 68 Rain Test 96 69 Stability Test .99 70 Static Loading Test .99 71 Ozone Te
26、st .100 72 Strain Relief Test 101 73 Water Heating Protective Controls Tests .101 73.1 Endurance test .101 73.2 Calibration test 102 74 Overload and Endurance Test for Operating Controls 103 75 Burnout Test 104 75.1 Water heater .104 75.2 Thermoelectric water coolers .105 75.3 Other components 106 7
27、6 Overvoltage and Undervoltage Tests .107 77 Current Overload Test Bonding Conductors and Connections .108 78 Insulation Resistance Test 108 78.1 Water heaters 108 78.2 Thermal and/or acoustical insulating material .109 79 Limited Short-Circuit Test .109 79.1 General 109 79.2 Motor overload protecti
28、ve devices .111 79.3 Bonding conductors and connections 111 79.4 Motor circuit conductors and connections 111 80 Protective Devices Maximum Continuous Current Test .111 81 Strength Tests Pressure Containing Components 113 81.1 General 113 81.2 High-side parts 114 81.3 Low-side parts 114 81.4 Leakage
29、 at gaskets or seals 115 81.5 Water-heating tanks .115 81.6 Pressurized beverage product system .115 82 Start-To-Discharge Test 116 83 Protective Electronic Circuit Tests .116 83.1 General 116 83.2 Fault conditions abnormal test 116 83.3 Electromagnetic compatibility (EMC) tests 118 83.4 Programmabl
30、e component reduced supply voltage test 119 MARCH 30, 2017 DRINKING WATER COOLERS - UL 399 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 83.5 Fuse-link test .120 84 Accelerated Aging Test Electric Heaters 121 85 Reliability Test Heater Te
31、rminations 122 86 Accelerated Aging Tests on Gaskets, Sealing Compounds, and Adhesives .122 87 Ultraviolet Irradiance Test .124 88 Metallic Coating Thickness Test .124 89 Marking Label Adhesion Tests 126 89.1 General 126 89.2 Oven-aging test .126 89.3 Immersion test 127 89.4 Standard-atmosphere test
32、 127 89.5 Unusual-condition exposure test 127 90 Refrigerant Identication Tests 127 90.1 General 127 90.2 Infrared analysis 127 90.3 Gas chromatography analysis 128 MANUFACTURING AND PRODUCTION TESTS 91 Pressure Tests 128 92 Production Fatigue Test 129 93 Production Line Dielectric Voltage-Withstand
33、 Tests 129 94 Production Line Grounding Continuity Tests 132 95 Annual Refrigerant Identication .132 96 Protective Electronic Circuit Test 132 MARKING 97 General 132 98 Accessories .135 99 Permanently Connected Water Coolers 136 100 Cord Connected Water Coolers 140 SUPPLEMENT SA - SANITATION REQUIRE
34、MENTS FOR SELF CONTAINED DRINKING-WATER COOLERS INTRODUCTION SA1 Scope SA1 CONSTRUCTION SA2 Bubbler Nozzle and Guard SA1 SA3 AirGap.SA2 SA4 Top or Bowl .SA2 PERFORMANCE SA5 Nozzle Flow Control Test .SA3 MARCH 30, 2017 DRINKING WATER COOLERS - UL 399 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHE
35、R REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SUPPLEMENT SB - REQUIREMENTS FOR DRINKING WATER COOLERS EMPLOYING A FLAMMABLE REFRIGERANT IN THE REFRIGERATING SYSTEM SB1 Scope SB1 SB2 Denitions SB1 SB3 General SB2 SB4 Construction SB2 SB4.1 General SB2 SB4.2 Tubings and ttings .SB3 SB5 Per
36、formance SB4 SB5.1 Leakage test .SB4 SB5.2 Ignition protection test .SB7 SB5.3 Temperature test SB8 SB5.4 Scratch test SB8 SB6 Marking, Installation and Operating Instructions SB10 SB6.1 Marking .SB10 SB6.2 Installation and operating instructions .SB11 APPENDIX A Clarications APPENDIX B Operating an
37、d Protective (“Safety Critical”) Control Functions(Normative) MARCH 30, 2017 DRINKING WATER COOLERS - UL 399 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover self-contained drinking-water coo
38、lers employing hermetic refrigerant motor-compressors or thermoelectric water chilling systems and designed for connection to alternating-current circuits rated not greater than 600 volts in accordance with the National Electrical Code, NFPA 70. The following types of water coolers are included with
39、in the scope of this Standard: a) Those supplying cold water or both cold and hot water; b) Battery operated; c) Those employing ammable refrigerant as dened in Supplement SB; and d) Those provided with ultraviolet (UV) radiation lamp systems in which the UV wavelengths are 200 nm or greater; howeve
40、r, the effectiveness of the water treatment by the UV radiation is not covered by these requirements. 1.2 These requirements do not include additional requirements applicable to equipment designed for use in hazardous locations as dened in the National Electrical Code, NFPA 70. 1.3 A product that co
41、ntains 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, electric shock, or injury to persons shall be evaluated using the appropriate additional component and end-product requirement
42、s as determined necessary to maintain the acceptable 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 cannot be judged to comply with t
43、his standard. Where considered appropriate, revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard. 2 Units of measurement 2.1 If a value for measurement is followed by value in other units in par
44、entheses, the second value may be only approximate. The rst stated value is the requirement. MARCH 30, 2017 DRINKING WATER COOLERS - UL 399 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3 Undated references 3.1 Any undated reference to a
45、code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. 4 Reserved for future use 5 Glossary 5.1 For the purpose of this standard, the following denitions apply. 5.2 ACCESSORY An optional electrical device or o
46、ther component, such as a superstructure, intended for installation in or connection to a water cooler for the purpose of modifying or supplementing the functions of the water cooler. It may be factory installed or intended for installation by the user. 5.3 *ADJUSTABLE SPEED DRIVE A combination of p
47、ower converter, inverter, motor, and motor-mounted auxiliary devices such as encoders, tachometers, thermal switches and detectors, air blowers, heaters, and vibration sensors. *Reprinted with permission from NFPA 70-2011 , National Electrical Code , Copyright 2010, National Fire Protection Associat
48、ion, Quincy, MA. This reprinted material is not the complete and official position of the NFPA on the referenced subject, which is represented only by the standard in its entirety. 5.4 *ADJUSTABLE SPEED DRIVE SYSTEM An interconnected combination of equipment that provides a means of adjusting the sp
49、eed of a mechanical load coupled to a motor. A drive system typically consists of an adjustable speed drive and auxiliary electrical apparatus. *Reprinted with permission from NFPA 70-2011 , National Electrical Code , Copyright 2010, National Fire Protection Association, Quincy, MA. This reprinted material is not the complete and official position of the NFPA on the referenced subject, which is represented only by the standard in its entirety. 5.5 BARRIER, ELECTRICAL A par
