UL 2157
Electric Clothes Washing Machines and Extractors

DETAILS
Edition Number:4SCC Approved:--
Edition Date:2018-05-28DOD Approved: --
Price Code:CANSI Approved: 2018-05-28
Type:ulcsa

  • SCOPE

    1 Scope

    1.1 This Standard applies to electric clothes washing machines and extractors intended to be used in nonhazardous locations in accordance with the Canadian Electrical Code, Part I (CE Code), and the (U.S.) National Electrical Code (NEC), on circuits having a nominal voltage not exceeding 600 V.

    Note: Wherever practical, for convenience, the term “appliance” has been used in lieu of “clothes washer “or “machine”.

    1.2 This Standard applies to both cord-connected and permanently connected appliances. The appliances covered by this Standard are intended for use by the general public not specifically trained in the use of the appliance, regardless of the mode by which its operation is initiated. They are for use in household and commercial purposes, including appliances provided with coin-, ticket-, or card-operated mechanisms, wringer washers, tumbler, agitator and spinner machines, combination washer-dryers, and extractors of the centrifugal type.

    1.3 This Standard does not apply to industrial and institutional type appliances. Industrial or institutional appliances are covered under the scope of Electric Washing Machines, CSA C22.2 No. 53, or Electric Commercial Clothes-Washing Equipment, UL 1206.

    Note: Industrial and institutional type appliances are not intended for use by the general public, but only by trained or supervised personnel.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • UL Harmonized Standard Title Page
    • Table of Contents
      • Body
        • 1 Scope
        • 2 Definitions
        • 3 General requirements and reference publications
          • 3.1 General requirements
          • 3.2 Reference publications
        • 4 General Conditions for the Tests
          • 4.1 Voltage and frequency
          • 4.2 Test load
          • 4.3 Test fabric
          • 4.4 Thermocouples
          • 4.5 Laundry detergent
          • 4.6 Laundry bleach
          • 4.7 Cheesecloth for heating and abnormal tests
          • 4.8 Test temperature
        • 5 Marking and Instructions
          • 5.1 Marking
          • 5.2 Instruction manual
          • 5.3 Installation instructions
          • 5.4 Operating instructions
          • 5.5 User-maintenance instructions
          • 5.6 Appliance stand and wall-mounting kit instructions
        • 6 Protection against accessibility to current-carrying parts
        • 7 Starting of Motor-Operated Appliances
        • 8 Power input and current
        • 9 Heating
          • 9.1 General
          • 9.2 Appliances intended for closet installation
          • 9.3 Wall-insert or recessed appliances
          • 9.4 Other appliances
          • 9.5 Cord reels
          • 9.6 Nonautomatic washing machine
          • 9.7 Household automatic washing machine
          • 9.8 Commercial washing machines
          • 9.9 Water heating feature
          • 9.10 Household extractors
          • 9.11 Coin-, ticket-, or card-operated commercial extractors
        • 10 Leakage current
        • 11 Moisture resistance
        • 12 Insulation resistance
        • 13 Electric strength
        • 14 Abnormal operation
          • 14.1 Stalled motor and open solenoid test
          • 14.2 Cord reels
          • 14.3 Wetting of electrical components
          • 14.4 Oversudsing
          • 14.5 Auxiliary reservoirs
          • 14.6 Liquid spillage test
          • 14.7 Nichrome wire test
          • 14.8 Dry operation
        • 15 Stability and mechanical hazards
          • 15.1 Automatic restarting of motor
          • 15.2 Stability (freestanding appliances)
          • 15.3 Wall-mounted appliances
          • 15.4 Appliance stands
          • 15.5 Sharp edges, projections, and moving parts
          • 15.6 Entrapment
          • 15.7 Wringer washers
          • 15.8 Washing machines and extraction-type appliances
        • 16 Mechanical strength
          • 16.1 Frame and enclosure
          • 16.2 Back covers
          • 16.3 Glass loading doors and lids
        • 17 Construction
          • 17.1 Current-carrying parts
          • 17.2 Electrical insulation
          • 17.3 Thermal insulation
          • 17.4 Overflow pipes
          • 17.5 Bottom openings
          • 17.6 Plumbing requirements
        • 18 Internal wiring
          • 18.1 General
          • 18.2 Splices and connections
          • 18.3 Separation of circuits
          • 18.4 Overcurrent protection
          • 18.5 Endurance test for pedestal wire flexing
        • 19 Components
          • 19.1 General requirements for components
          • 19.2 Mechanical assembly
          • 19.3 Capacitors
          • 19.4 Field-installed devices and accessories
          • 19.5 Heating elements
          • 19.6 Lampholders
          • 19.7 Motors
          • 19.8 Motor overload-protective devices
          • 19.9 Receptacles
          • 19.10 Seals and diaphragms
          • 19.11 Switches
          • 19.12 Controls
          • 19.13 Overcurrent protection
          • 19.14 Electrically operated valves
          • 19.15 Terminals and connectors
          • 19.16 Pumps
          • 19.17 Insulating devices
          • 19.18 Adhesives used to secure parts
          • 19.19 Transformers and power supplies
          • 19.20 Button or coin cell batteries of lithium technologies
        • 20 Supply connection and external flexible cords
          • 20.1 General
          • 20.2 Permanently connected appliances
          • 20.3 Cord-connected appliances
          • 20.4 Bushings
        • 21 Terminals for external conductors
        • 22 Provision for grounding
          • 22.1 General
          • 22.2 Bonding means
          • 22.3 Continuity of grounding circuit
          • 22.4 Grounding terminals and leads
        • 23 Screws and connections
        • 24 Creepage distances, clearances, and distances through insulation
          • 24.1 General
          • 24.2 Alternate spacings - clearances and creepage distances
        • 25 Resistance to rusting
        • 26 Polymeric materials
          • 26.1 General
          • 26.2 Long-term exposure
          • 26.3 Immersion
          • 26.4 Mould stress relief
          • 26.5 Horizontal burning rate
          • 26.6 Flammability
          • 26.7 6.8 J impact (ambient and low temperature)
          • 26.8 Static load
          • 26.9 56.7 J impact
          • 26.10 Thermal cycling
          • 26.11 Hot-wire ignition
          • 26.12 Thermal ageing
          • 26.13 Volume resistivity
          • 26.14 Enclosure flammability - large mass consideration
          • 26.15 Abnormal operation test on enclosures
          • 26.16 Abnormal operation test on functional polymeric parts
          • 26.17 Abnormal operation test on parts wetted only during an abnormal condition
          • 26.18 High-current arc ignition
        • 27 Manufacturing and production tests
          • 27.1 Plumbing system leakage test
          • 27.2 Grounding continuity test
          • 27.3 Electric strength test
        • TABLES
        • FIGURES
    • ALTERNATIVE PATH FOR ELECTRONIC CONTROLS REQUIREMENTS
    • ANNEX A (informative)Translations