1、ANSI Z83.21-2016/CSA C22.2 No. 168-16Commercial dishwashersLegal Notice for StandardsCanadian Standards Association (operating as “CSA Group”) develops standards through a consensus standards development process approved by the Standards Council of Canada. This process brings together volunteers rep
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21、Standards Institute, Inc.Interprovincial Gas Advisory CouncilCommercial dishwashersCSA GroupCSA C22.2 No. 168-16 Second EditionCSA America ANSI Z83.21-2016 Second EditionUnderwriters Laboratories Inc.UL 921Seventh EditionCommercial DishwashersMarch 23, 2016ANSI/UL 921-2016Commitment for AmendmentsTh
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27、ards shall remain the sole and exclusive property of UL.This ANSI/UL Standard for Safety consists of the Seventh Edition including revisions through March 23,2016. The most recent designation of ANSI/UL 921 as an American National Standard (ANSI) occurredon March 23, 2016. ANSI approval for a standa
28、rd does not include the Cover Page, Transmittal Pages,Title Page (front and back), or the Preface.The Department of Defense (DoD) has adopted UL 921 on June 18, 1992. The publication of revisedpages or a new edition of this Standard will not invalidate the DoD adoption.Comments or proposals for revi
29、sions 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 StandardsDevelopment System (CSDS) at http:/.To purchase UL Standards, visit Comm 2000 at http:/m- call toll-free 1-888-853-3503.CONTENTSPREFACE 61 S
30、cope .82 General 82.1 Components .82.2 Units of measurement .92.3 Reference publications 92.4 General requirements 133 Definitions 134 Construction Requirements Applicable To All Dishwashers 164.1 General 164.2 Field-attached accessories .194.3 Doors and covers .194.4 Accessibility of current-carryi
31、ng parts 204.5 Corrosion protection .214.6 Mechanical assembly 214.7 Power-supply connections 224.8 Current-carrying parts 264.9 Internal wiring .264.10 Separation of circuits .284.11 Insulating materials .284.12 Thermal insulation .294.13 Equipment grounding and bonding .304.14 Lampholders 314.15 R
32、eceptacles .314.16 Capacitors 324.17 Overcurrent- or overload-protective devices .334.18 Overcurrent and overload protection for motors 334.19 Overcurrent protection for transformers .344.20 Overcurrent protection for conductors .354.21 Switches .364.22 Controls .364.23 Spacings 384.24 Seals and gas
33、kets 404.25 Moisture condensation .405 Construction Requirements Unique To Gas-Fired Dishwashers 405.1 General 405.2 Manually-operated gas valves .425.3 Automatic valves and safety shutoff valves .435.4 Gas pressure regulators 435.5 Ignition systems .435.6 Pilot-gas filters 455.7 Gas supply line .45
34、5.8 Semi-rigid tubing 466 Reduction Of Risk Of Injury To Persons Requirements Applicable To All Dishwashers .466.1 Enclosure and guards 466.2 Automatic restarting of motor .476.3 Parts subject to air or steam pressure .476.4 Pressure-relief devices .487 Performance Requirements Applicable To All Dis
35、hwashers .48MARCH 23, 2016 CSA C22.2 NO. 16816 ANSI Z83.212016 UL 921 37.1 General 487.2 Electrical input test 497.3 Starting current test 497.4 Normal temperature test 507.5 Temperature measuring equipment and enclosure setup .517.6 Dielectric voltage-withstand test .537.7 Flexing test .547.8 Insul
36、ation resistance following humidity conditioning test .557.9 Water exposure tests 557.10 Flooding of current-carrying parts test .577.11 Hydrostatic pressure test 587.12 Reservoir overflow test 587.13 Liquid containers, seals, and diaphragms tests .597.14 Limited short-circuit test (motor protection
37、) 597.15 Abnormal operation test .607.16 Blocked plunger test 607.17 Overvoltage for electrolytic capacitors test 617.18 Overload on switches test .617.19 Transformer overcurrent protection test .627.20 Transformer burnout test 627.21 Door interlock endurance test 637.22 Loading door/drawer moment l
38、oad test 637.23 Strain relief test 637.24 Push-back relief test 638 Performance Requirements Unique To Electrically-Heated Dishwashers 638.1 Automatic temperature control tests .639 Performance Requirements Unique To Gas-Fired Dishwashers 649.1 General 649.2 Test gases .669.3 Test pressures and burn
39、er adjustments test 669.4 Normal operation combustion test .669.5 Undervoltage combustion test .679.6 Combustion air failure test 679.7 Burner operating characteristics test .689.8 Pilot ignition systems test .699.9 Direct ignition systems tests 749.10 Flue gas temperature for draft hood appliances
40、test 7610 Manufacturing And Production Tests Unique To Electrically-Heated Dishwashers .7610.1 Production line dielectric voltage-withstand test 7610.2 Production line grounding continuity test 7811 Manufacturing And Production Tests Unique To Gas-Fired Dishwashers 7812 Rating Requirements Applicabl
41、e To All Dishwashers 7813 Marking Requirements Applicable To All Dishwashers .7914 Marking Requirements Unique To Electrically-Heated Dishwashers .7915 Marking Requirements Unique To Gas-Fired Dishwashers .8216 Installation Instructions Applicable to All Dishwashers .8317 Installation Instruction Re
42、quirements Unique to Electrically-Heated Dishwashers .8318 Installation Instruction Requirements Unique To Gas-Fired Dishwashers 83MARCH 23, 2016CSA C22.2 NO. 16816 ANSI Z83.212016 UL 9214SUPPLEMENT SA - COMMERCIAL DISHWASHERS SELF-CONTAINED CONDENSING SYSTEMSINTRODUCTIONSA1 Scope 101CONSTRUCTIONSA2
43、 Condenser Tubing and Fittings 101SA3 Pressure Relief 102SA3.1 General 102PERFORMANCESA4 Heat Load Calculation Test (United States Only) .102SA5 Strength Tests Pressure-Containing Components 104MARKINGSSA6 General (United States Only) 105APPENDIX AStandards for ComponentsAPPENDIX BMarking French Tra
44、nslationsMARCH 23, 2016 CSA C22.2 NO. 16816 ANSI Z83.212016 UL 921 5PREFACEThis is the common CSA Group, and UL standard for Commercial Dishwashers. It is the Second edition of CSA C22.2 No. 168, the Second edition of ANSI/CSA Z83.21, and the Seventh edition of UL 921. This edition of CSA C22.2 No.
45、168, ANSI/CSA Z83.21, supersedes the previous edition published in 2005. This edition of UL 921 supersedes the previous edition(s) published on January 31, 2005.This harmonized standard was prepared by CSA Group and Underwriters Laboratories Inc. (UL). Theefforts and support of the Z83/CSA Joint Tec
46、hnical Subcommittee on Standards for Gas Food ServiceEquipment, and representatives of the commercial dishwasher industry in Canada and the United Statedfor developing this harmonized standard are gratefully acknowledged.Major changes in this edition are the addition of Supplement SA COMMERCIAL DISH
47、WASHERSSELF-CONTAINED CONDENSING SYSTEMS, updating the reference documents and reformatting tolatest editorial guidelines.This standard is considered suitable for use for conformity assessment within the stated scope of thestandard.This standard was reviewed by the Z83/CSA Joint Technical Subcommitt
48、ee on Standards for Gas FoodService Equipment under the jurisdiction of the Technical Committee on Performance and Installation ofGas Burning Appliances and Related Accessories and the Strategic Steering Committee on Standards forGas Burning Appliances and Related Accessories, and has been formally
49、approved by the Z21/83 andCSA Technical Committees, American National Standards Institute, and the Interprovincial Gas AdvisoryCouncil.This standard was also reviewed by the CSA Subcommittee on Electrical Motor-Operated CleaningAppliances for Commercial Use, under the jurisdiction of the CSA Technical Committee on Consumer andCommercial Products, the CSA Strategic Steering Committee on requirements for Electrical Safety, andhas been formally approved by the CSA Technical Committee.Thi
