Source: http://ulstandards.ul.com/standard/?id=197_10
Timestamp: 2017-03-30 14:27:40
Document Index: 37156691

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Standard 197 - Standard for Commercial Electric Cooking Appliances
1.1 These requirements cover commercial electric cooking appliances rated 600 volts or less, intended for indoor use, and intended for use in accordance with the National Electrical Code, NFPA 70.1.2 These requirements cover coffee makers, conductive cookers, food warmers, fryers, griddles, steam kettles, steam cookers, nut warmers, popcorn machines, ranges, utensil warmers, and other appliances found in commercial kitchens, restaurants, or other business establishments where food is dispensed.1.3 These requirements do not cover vending machines, cooking appliances intended for household use, commercial cooking appliances rated more than 600 volts, or microwave cooking appliances.1.4 An appliance designed so that it can be mounted and supported at an outlet box, such as a food warmer, is judged on the basis of compliance with the requirements in this Standard and with the mounting and weight requirements for electric lighting fixtures.1.5 An appliance that utilizes heat produced by a means other than electrical (for example, gelled or liquid fuel, coal, gas, or oil) is also investigated with respect to the additional risk of fire. 1.6 An appliance that utilizes heat produced by gelled or liquid fuel is also investigated with the appliance operating with the specific fuel(s) which it intended to be used. 1.7 Commercial cooking equipment employing integral systems for limiting the emission of grease laden air are intended to be installed in accordance with the Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations, NFPA 96, and shall comply with the requirements of this Standard. Additionally, the effluent emitted from the system shall not exceed 5 mg/m3 as measured in accordance with the U. S. Environmental Protection Agency (EPA) Test Method 202, Determination of Condensible Particulate Emissions From Stationary Sources. 1.8 Commercial cooking equipment employing integral recirculating systems shall comply with the requirements of this Standard and the requirements in the Standard for Recirculating Systems, UL 710B. CoverTransmittalTable of ContentsBodyPART 1 - ALL APPLIANCESINTRODUCTION1 Scope2 Glossary3 Components4 Units of Measurement5 Undated ReferencesCONSTRUCTION5A General5A.2 Ground-fault, arc-fault, and leakage current detectors/interrupters5A.3 Surge protective device5A.4 Terminal blocks5A.5 Quick-connects5A.6 Insulating tape and tubing5A.7 Programmable controllers5A.8 Fabricated polymeric parts5A.9 Door latch release6 Accessories7 Mechanical Assembly7.1 General7.2 Mounting of components7.3 Shipping8 Electrical and Fire Enclosures8.1 General8.2 Metallic enclosures8.3 Nonmetallic enclosures8.4 Fire containment - general8.5 Fire containment - enclosures for overcurrent protective device8.6 Grease troughs and pans9 Outer Cabinetry/ Enclosures10 Accessibility of Live Parts10.1 General10.2 Open wire heating elements10.3 Lamps, quartz enclosed heating elements, and similar components10.4 Fuses, circuit breakers, supplementary protectors, and manually reset controls11 Guarding of Moving Parts11.1 General11.2 Materials12 Protection Against Injury to Persons13 Protection of Service Personnel14 Interlocks14.1 General14.2 Moving parts15 Protection Against Corrosion16 Electrical Supply Connections for Permanently Connected Appliances16.1 General16.2 Wiring compartment16.3 Field-wiring terminals and leads16.4 Grounded supply conductor16.5 Equipment grounding connection17 Electrical Supply Connections for Cord-Connected Appliances17.1 General17.2 Strain relief17.3 Bushings17.4 Grounding17.5 Multiple power supply cords18 Bonding for Grounding19 Polarity20 Current-Carrying Parts21 Attachment-Plug Receptacles22 Internal Wiring22.1 General 22.2 Insulation22.3 Protection22.4 Wiring in circuits involving a risk of fire or electric shock22.5 Splices and connections23 Heating Elements24 Electrical Insulation24.6 Film-coated wire (magnet wire)25 Thermal Insulation26 Motors and Transformers26.1 Motors in circuits involving a risk of fire or electric shock26.2 Motor protection26.3 Transformers27 Temperature Controls28 Short-Circuit and Ground-Fault Protection28.1 General28.2 Supplementary-type overcurrent protective devices used as short-circuit and ground-fault protection28.3 Protection for circuits including specific components28.4 Protection for wiring located outside the enclosure28.5 Protection for high-voltage control circuits conductors29 Auxiliary-Circuit Terminals30 Capacitors31 Switching Devices31.1 General31.2 Electrical ratings31.3 Guarding31.4 Specific applications 32 Components Containing Liquid Metal33 Lampholders33A Light Sources and Associated Components34 Secondary Circuits34.1 General34.2 Evaluation of the different types of secondary circuits34.3 Class 2 circuits34.4 Limited voltage/current circuits34.5 Limited voltage circuit requirements34.6 Limited energy circuits34.7 Limiting impedance circuits34.8 Safety extra-low voltage circuits35 Lithium Battery Circuits36 Isolating Devices37 Electrical Spacings37.1 General37.2 Secondary circuits38 Insulating Barriers39 Clearance and Creepage Distances40 Separation of Circuits41 Parts Subject to Pressure41.1 General41.2 Pressure relief means41.3 Pressure relief devices41.4 Pressure Controls42 Stability43 Surface Mounted Appliances43.1 General43.2 Wall mounting43.3 Under cabinet units44 Gas-Tube SignsPERFORMANCE - COMPLETE APPLIANCE45 General46 Leakage Current Test47 Power Input Test48 Input Averaging Test49 Short-Circuit Tests50 Normal Temperature Test50.1 General50.2 Surface temperatures50.3 Test equipment50.4 Procedure50.5 Normal test conditions51 Dielectric Voltage-Withstand Test51.1 General51.2 Primary circuits51.3 Secondary Circuits51.4 Transformers52 Resistance to Moisture Test53 Insulation Resistance Test54 Grounding and Bonding Test54.1 Grounding54.2 Bonding55 Stability56 Abnormal Heating Test56.1 General56.2 Procedure56.3 Test conditions - disabled thermostat56.4 Test conditions - locked rotor56.5 Stalled fan test - control compartment fan56.6 Abnormal dry operation test56.7 Test conditions - specific appliances57 Breakdown of Components Test58 Wiring Endurance Test59 Cord Endurance Test - Hand-held Appliances60 Strain Relief Test61 Push-Back Relief62 Thermal Shock Test - Glass/Ceramic Cooking Surfaces63 Strength of Enclosures, Frames, and Guards Test63.1 General63.2 Static force test63.3 Impact test - frames, guards, and metal enclosures63.4 Impact test - glass/ceramic-cooking surfaces63.5 Impact - exposed glass parts other than glass/ceramic cooking surfaces64 Mounting Means Test65 Reservoir Tests65.1 General65.2 Overflow test for automatic fill appliances65.3 Overflow test for manual fill appliances65.4 Removable container test65A Door Latch Release Test65B Door Opening TestPERFORMANCE - COMPONENTS66 General67 Transformer Burnout Test68 Endurance Test for Temperature-Regulating Controls69 Endurance Test for Interlock Switches70 Motor Switch Overload Test71 Components Containing Liquid Metal Test72 Printed-Wiring Board Abnormal Operation Test73 Secondary Circuits Tests73.1 General73.2 Maximum voltage73.3 Maximum current test for inherently limited circuits73.4 Limited power point determination test73.5 Component failure73.6 Maximum power test73.7 Power dissipation test74 Parts Subject to Contact with Oil or Other Liquids75 Hydrostatic Pressure Test76 Start-To-Discharge Test77 Relief Device Maximum Pressure Test78 Pressure Controls Endurance Test79 Permanence of Marking Test79.1 Labels79.2 Cord tagsMANUFACTURING AND PRODUCTION TESTS80 Dielectric Voltage-Withstand81 Grounding Continuity82 Pressure Vessels and Parts Subject to PressureAPPLIANCE RATINGS83 Electrical RatingsMARKING84 General85 Visible to Operator86 Visible After Installation87 Graphical Symbols and Supplemental Markings87.1 No user-serviceable parts compartment warning87.2 Graphical symbol size and color87.3 Supplemental marking size and color87.4 Size of outlines and symbols87.5 Explanation of graphical symbols in the operating instructions88 Visible During Installation and Examination89 Visible During Servicing Operations90 Nonpermanent MarkingINSTRUCTIONS91 Manufacturer's LiteraturePART 2 - COMMERCIAL ELECTRIC COOKING APPLIANCES FOR MARINE USE92 Scope93 Cleaning and Maintenance94 Hinges and Locking Devices95 Protection of Personnel96 Securing of Appliances97 Disconnecting Means98 Performance98.1 General98.2 Vibration test98.3 Shock test99 MarkingPART 3 - DEEP-FAT FRYERS AND RELATED EQUIPMENTINTRODUCTION100 ScopeCONSTRUCTION101 Temperature Controls102 Switching Devices103 StabilityPERFORMANCE104 Normal Temperature Test105 Disabled Temperature Regulating Control - Oil Temperature Test106 Abnormal Heating TestMANUFACTURING AND PRODUCTION TESTS107 General108 Limiting ControlsMARKINGS109 GeneralPART 4 - COMMERCIAL ELECTRIC COOKING APPLIANCES WITH SEMICONDUCTOR HEATING ELEMENTSINTRODUCTION110 ScopeCONSTRUCTION111 Heating Element112 SwitchesPERFORMANCE113 General114 Input Test115 Normal Temperature Test116 Low Ambient Temperature Starting Test117 Abnormal Heating Test - Restricted Air Flow118 Endurance Test119 Input Current Test120 Overload and Endurance TestRATINGS121 Electrical RatingsPART 5 - DOUBLE INSULATIONINTRODUCTION122 ScopeCONSTRUCTION AND PERFORMANCE123 GeneralMANUFACTURING AND PRODUCTION TESTS124 Production Line Dielectric Voltage-Withstand125 Production Line Grounding ContinuityMARKINGS126 GeneralPART 6 - COMMERCIAL ELECTRIC DRIP-TYPE COFFEE MAKERS AND SIMILAR DRIP-TYPE BREWING APPLIANCESINTRODUCTION127 ScopeCONSTRUCTION128 Assembly129 Thermal Conductivity130 Operating Controls131 Power-On Indicator132 Temperature Controls132.1 Temperature regulating controls132.2 Temperature limiting controlsPERFORMANCE133 General134 Normal Temperature Test135 Leakage Current as a Result of Moisture136 Stability Test137 Mounting Means Test138 Impact Test139 Abnormal Operation Tests139.1 General139.2 Dry operation test139.3 Fusible devices139.4 Water valve failureMARKINGS140 DetailsPART 7 - COMMERCIAL COOKING APPLIANCES FOR OUTDOOR USEINTRODUCTION141 Scope142 GlossaryCONSTRUCTION143 Cord Connected144 Field Wiring Connected145 Enclosures146 Corrosion Protection of Enclosures Exposed to WeatherPERFORMANCE147 General148 Rain Test149 Metallic Coating Thickness Test150 Cold Impact151 Accelerated Aging Tests152 Ultraviolet Light Exposure153 Water Exposure and Immersion154 Markings155 Installation InstructionsAppendix A	DETAILS