UL 751
Standard for Vending Machines

DETAILS
Edition Number:9SCC Approved:--
Edition Date:2016-07-18DOD Approved: --
Price Code:CANSI Approved: 2018-10-02
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover self-contained, payment-accepting, vending machines that vend non-refrigerated products to be employed in accordance with ANSI/NFPA 70. Vending machines as covered by this standard are intended for indoor use only, except that they will be investigated for outdoor use or use in a protected location if so designated by the manufacturer. Vending machines may be battery operated and may be provided with a solar photovoltaic (PV) system. If a vending machine vends a non-refrigerated product but is provided with a refrigerated section, then the refrigerated section shall be evaluated to the relevant requirements in UL 541.

    1.2 These requirements also cover vending machines intended for installation within motor fuel dispensing facilities in accordance with Supplement sa, Requirements for Vending Machines Intended for Installation within Motor Fuel Dispensing Facilities, and as defined by NFPA 30A.

    1.3 These requirements do not cover sound-recording and reproducing machines.

    1.4 These requirements do not cover vending machines intended to vend refrigerated products. Such products are covered by UL 541.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Units of Measurement
          • 3 References
          • 4 Terminology
          • 5 Glossary
        • CONSTRUCTION
          • 6 General
          • 7 Nonmetallic Parts
          • 8 Nonmetallic Materials
          • 9 Nonmetallic Material Ignition Sources Separation
          • 10 Nonmetallic Material Application and Location
          • 11 Barriers
          • 12 Frame and Enclosure
          • 13 Mechanical Assembly
          • 14 Accessibility of Live Parts
          • 15 Protection Against Corrosion
          • 16 Supply Connections For Cord Connected Vending Machines
            • 16.1 Cords and plugs
            • 16.2 Strain relief
          • 17 Supply Connections for Permanently Connected Vending Machines
            • 17.1 General
            • 17.2 Field-wiring compartments
            • 17.3 Field-wiring terminals and leads
            • 17.4 Equipment grounding
          • 18 Current-Carrying Parts
          • 19 Insulating Material
            • 19.1 Electrical insulation
            • 19.2 Thermal insulation
          • 20 Internal Wiring
            • 20.1 General
            • 20.2 Wires
            • 20.3 Routing
          • 21 Splices and Connections
          • 22 Separation of Circuits
          • 23 Heating Elements
          • 24 Motors
            • 24.1 General
            • 24.2 Overload protection
            • 24.3 Protective electronic circuits
          • 25 Overcurrent Protection
            • 25.1 General
            • 25.2 Motors and power transformers
          • 26 Switches and Controllers
          • 27 Remotely Operated Vending Machines
          • 28 Capacitors
          • 29 Receptacles
          • 30 Batteries and Battery Chargers
          • 31 Connectors
          • 32 Cooking Equipment
          • 33 Electrical Cable, Conduit and Tubing
          • 34 Electromagnetic Interference Filters
          • 35 Fuseholders
          • 36 Lighting Systems
            • 36.1 General
            • 36.2 Electric-discharge lighting systems
          • 37 Optical Isolators and Semiconductor Devices
          • 38 Outlet Boxes, Fittings and Cover Plates
          • 39 Power Supplies
          • 40 Solar Photovoltaic (PV) Systems
          • 41 Information Technology Equipment
          • 42 Terminal Blocks
          • 43 Transformers
          • 44 Wireways, Auxiliary Gutters and Associated Fittings
          • 45 Secondary Circuits
          • 46 Spacings
            • 46.1 High-voltage circuits
            • 46.2 Low-voltage circuits
            • 46.3 Alternate spacings – clearances and creepage distances
          • 47 Grounding
          • 48 Accessories
          • 49 Coin and Credit Mechanisms
        • PROTECTION AGAINST INJURY TO PERSONS
          • 50 General
            • 50.1 General
            • 50.2 Switches and controllers
            • 50.3 Lids
          • 51 Stability Test
          • 52 Risk of Injury to Servicemen
          • 53 Pressure Vessels and Parts Subject to Pressure
          • 54 Pressure-Relief Devices
        • PERFORMANCE
          • 55 General
          • 56 Leakage Current Test
          • 57 Input Test
          • 58 Temperature Test
            • 58.1 General
            • 58.2 Maximum normal load
          • 59 Dielectric Voltage-Withstand Test
          • 60 Abnormal Operation Test
          • 61 Resistance to Moisture Tests
            • 61.1 Humidity
            • 61.2 Water spray
          • 62 Thermostat Tests
          • 63 Bonding Connection Test
          • 64 Metallic Coating Thickness Test
          • 65 Overload of Motor Switches or Controllers Test
          • 66 Overload and Endurance Test – Switching Devices
          • 66A Switch Mode Power Supply Units – Overload Test
          • 67 Flexing of Internal Wiring
          • 68 Strain Relief Test
          • 69 Push-Back Strain-Relief Test
          • 70 Glass Strength Test
            • 70.1 Impact test
            • 70.2 Mechanical pressure test
          • 71 Glass Component Strength Test
          • 72 Accelerated Aging Test of Gaskets
          • 73 Permanence of Marking Test
            • 73.1 General
            • 73.2 Oven-aging test
            • 73.3 Immersion test
            • 73.4 Standard-atmosphere test
          • 74 Tests on Nonmetallic Materials
          • 75 Fastener Strength Test
          • 76 Protective Electronic Circuit Tests
            • 76.1 General
            • 76.2 Fault conditions abnormal test
            • 76.3 Electromagnetic compatibility (EMC) tests
            • 76.4 Programmable component reduced supply voltage test
            • 76.5 Fuse-link test
        • MANUFACTURING AND PRODUCTION TESTS
          • 77 Dielectric Voltage-Withstand Test
          • 78 Grounding Continuity Test
          • 79 Protective Electronic Circuit Test
        • MARKING
          • 80 General
            • 80.1 Permanence
            • 80.2 Identification
            • 80.3 Installation instructions
            • 80.4 Accessories
            • 80.5 Temperature markings
          • 81 Cautionary
    • REQUIREMENTS FOR VENDING MACHINES INTENDED FOR INSTALLATION WITHIN MOTOR FUEL DISPENSING FACILITIES
    • APPENDIX A – OPERATING AND PROTECTIVE ("SAFETY CRITICAL") CONTROL FUNCTIONS (Normative)