UL 1201
Standard for Sensor Operated Backwater Prevention Systems

DETAILS
Edition Number:1SCC Approved:2018-10-26
Edition Date:2016-12-14DOD Approved: --
Price Code:AANSI Approved: 2018-10-26
Type:ulstd

  • SCOPE

    1 Scope

    1.1 This standard covers backwater prevention systems that use sensors, controls and mechanisms for the prevention of backflow for sanitary drainage and storm systems and specifies minimum requirements for materials, mechanical, electrical, performance tests and markings.

    1.2 The purpose of this Standard is to enhance health and safety by:

    a)    Specifying acceptable criteria for sensor operated backwater prevention systems;

    b)    Serving as a guide for producers, distributors, architects, engineers, contractors, installers, inspectors and users; and

    c)    Promoting understanding regarding materials and manufacturing of sensor operated backwater prevention systems.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
    • UL Preface
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Units of Measurement
          • 3 Reference Publications
          • 4 Glossary
        • CONSTRUCTION
          • 5 General
            • 5.1 General
            • 5.2 Grade
            • 5.3 Access
          • 6 Control Unit Frame and Enclosure
            • 6.1 General
            • 6.2 Cast metal enclosures
            • 6.3 Sheet metal enclosures
            • 6.4 Nonmetallic enclosures
            • 6.5 Electric shock
            • 6.6 Ventilating openings
          • 7 Metal Covers and Doors
          • 8 Glass Panels
          • 9 Corrosion Protection
          • 10 Insulating Materials
          • 11 Mounting of Electrical Components
          • 12 Operating Mechanisms
          • 13 Current-Carrying Parts
          • 14 Servicing Protection
          • 15 Field-Wiring Connections
            • 15.1 Primary power supply
            • 15.2 Secondary power supply
            • 15.3 Batteries
          • 16 Installation Wiring Connections
            • 16.1 General
            • 16.2 Field-wiring terminals
            • 16.3 Field-wiring leads
            • 16.4 Power-supply cord
          • 17 Strain Relief
            • 17.1 General
            • 17.2 Power-supply cord
            • 17.3 Field-wiring leads
          • 18 Internal Wiring
          • 19 Grounding
            • 19.1 Equipment grounding
            • 19.2 Polarity identification
          • 20 Components
            • 20.1 Printed wiring boards
            • 20.2 Bushings
            • 20.3 Coil windings
            • 20.4 Switches
            • 20.5 Protective devices
          • 21 Spacings
          • 22 Materials and Finishes
            • 22.1 General
            • 22.2 Internal working parts
            • 22.3 Cast iron
            • 22.4 Copper alloy
            • 22.5 ABS
            • 22.6 PVC
            • 22.7 Gaskets
            • 22.8 Bolting materials
            • 22.9 Finishes
            • 22.10 Coatings
          • 23 Connections
            • 23.1 Hub and spigot
            • 23.2 Flanged
            • 23.3 Hubless
            • 23.4 Threaded
            • 23.5 Solvent cement
            • 23.6 O-ring joints
            • 23.7 Dimensions
        • PERFORMANCE
          • 24 General
          • 25 Watertightness/Leakage and Backwater Pressure Test
          • 26 Cap Sealing and Thread Integrity Test
          • 27 Waterflow
          • 28 Rupture Test
          • 29 Power Failure Mode Test
          • 30 Life Cycle Test
          • 31 Time Delay Requirement Test
            • 31.1 System activation
            • 31.2 System activation test procedure
            • 31.3 System deactivation
            • 31.4 System deactivation test procedure
          • 32 Corrosion Test
          • 33 Control Unit Tests
            • 33.1 General
            • 33.2 Normal operation test
            • 33.3 Electrical supervision test
            • 33.4 Undervoltage operation test
            • 33.5 Overvoltage operation test
            • 33.6 Voltage and current measurements
            • 33.7 Jarring test
            • 33.8 Temperature test
            • 33.9 Overload test
            • 33.10 Endurance test – control unit
            • 33.11 Variable ambient temperature test
            • 33.12 Humidity test
            • 33.13 Leakage current test
            • 33.14 Electric shock current test
            • 33.15 Transient tests
            • 33.16 Dielectric voltage-withstand test
            • 33.17 Component failure test
            • 33.18 Audibility test
            • 33.19 Abnormal operation test
          • 34 Marking
          • 35 Maintenance And Operating Instructions
        • TABLES
        • FIGURES
    • ANNEX A Reference Standards(Informative)