UL 1776
Standard for High-Pressure Cleaning Machines

DETAILS
Edition Number:3SCC Approved:--
Edition Date:2002-06-07DOD Approved: 2000-08-23
Price Code:BANSI Approved: 2013-11-05
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover portable, stationary, and fixed high-pressure cleaning machines in which the discharge line is hand supported and manipulated, and intended for household, farm, or commercial/industrial applications.

    1.2 The electrical products covered by these requirements are intended for use in ordinary locations and for connection to branch circuits rated 600 volts or less in accordance with the National Electrical Code , NFPA 70 .

    1.3 These requirements do not cover:

    a)    High-pressure water cutting or cleaning products developing nozzle pressure and flow rates in excess of those for a Type 3 pressure cleaning machine as specified in 2.2.33 ,

    b)    Products employing universal motors rated more than 250 volts,

    c)    Sand blasters or other products using cleaning solutions containing insoluble particulates,

    d)    Products that develop steam within a heated vessel or are connected to an external source of steam, and

    e)    Carpet cleaners, dishwashers, clothes-washing machines, water-picks, and other products that are covered under separate requirements.

    1.4 A coin-operated product is investigated under these requirements and under such additional requirements as are applicable to the product under consideration.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
    • UL Foreword
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Glossary
            • 2.1 General
            • 2.2 All products
            • 2.3 Fuel-fired products
          • 3 Components
          • 4 Units of Measurement
          • 4A Undated References
          • 5 Accessories
          • 6 Instructions
        • CONSTRUCTION – ALL PRODUCTS
          • 7 Assembly
          • 8 Materials
            • 8.1 General
            • 8.2 Fluid-confining parts
            • 8.3 Nonmetallic materials
          • 9 Protection Against Corrosion
          • 10 Thermal Insulating Material
        • ELECTRICAL SYSTEMS AND DEVICES
          • 11 Frame and Enclosure
          • 12 Adhesives Used to Secure Parts
          • 13 Handles and Gripping Areas
          • 14 Mechanical Assembly
          • 15 Accessibility of Uninsulated Live Parts and Film-Coated Wire
          • 16 Supply Connections
            • 16.1 Cord-connected products
            • 16.2 Permanently connected products
          • 17 Current-Carrying Parts
          • 18 Insulating Material
          • 19 Internal Wiring
            • 19.1 Mechanical protection
            • 19.2 Wiring in products exposed to the effects of weathering
            • 19.3 Splices and connections
            • 19.4 Separation of circuits
            • 19.5 Separation of wiring and fuel lines
          • 20 Capacitors
          • 21 Grounding
          • 22 Heating Elements
          • 23 Water Heaters
          • 24 Lampholders
          • 25 Motors
            • 25.1 General
            • 25.2 Overload protection
          • 26 Overload- or Thermal-Protective Devices
          • 27 Receptacles
          • 28 Switches and Controls
          • 29 Automatic Temperature Controls
          • 30 Spacings
        • MECHANICAL SYSTEMS AND DEVICES – ENGINE DRIVEN PRODUCTS
          • 31 Fuel Systems – Gasoline or Diesel
            • 31.1 General
            • 31.2 Fuel tanks
            • 31.3 Fuel pump
            • 31.4 Fuel lines and fittings
            • 31.5 Carburetors
          • 32 Fuel Systems – LP-Gas
            • 32.1 General
            • 32.2 Containers
            • 32.3 Gauges
            • 32.4 Fuel lines and fittings
            • 32.5 Vaporizers
            • 32.6 Safety-control and relief devices
            • 32.7 Nonmetallic parts
            • 32.8 Exhaust System
            • 32.9 Battery compartment
        • MECHANICAL SYSTEMS AND DEVICES – FUEL FIRED PRODUCTS
          • 33 General
            • 33.1 Ignition assembly
            • 33.2 Gas-fired burners
            • 33.3 Oil-fired burners
          • 34 Burner Assemblies
            • 34.1 General
            • 34.2 Gas-fired assemblies
            • 34.3 Oil-fired assemblies
          • 35 Combination Gas-Oil Burner Assemblies
          • 36 Electric High-Tension Ignition System
            • 36.1 Assembly
            • 36.2 Electrode and bus bars
            • 36.3 Insulators
            • 36.4 Leads
            • 36.5 Transformers
          • 37 Electric Hot-Wire Ignition System
          • 38 Gas Pilots
            • 38.1 General
            • 38.2 Gas-fired burners
            • 38.3 Oil-fired burners
          • 39 Valves
            • 39.1 General
            • 39.2 Automatic safety-shutoff valves – gas-fired burners
            • 39.3 Automatic safety – shutoff valves– oil-fired burners
            • 39.4 Manual valves – gas-fired burners
            • 39.5 Manual valves – oil-fired burners
            • 39.6 Pressure-relief valves
          • 40 Pressure Regulators
          • 41 Heating Surfaces and Combustion Chambers
          • 42 Baffles
          • 43 Draft Control
          • 44 Venting
          • 45 Fuel-Supply System
            • 45.1 Oil tanks
            • 45.2 Fuel lines and piping
            • 45.3 Gas-fired products
            • 45.4 Oil fired products
          • 46 Controls
            • 46.1 General
            • 46.2 Combustion-air controls
            • 46.3 Operating controls
            • 46.4 Limit controls
            • 46.5 Primary-safety controls – gas-fired burners
            • 46.6 Primary-safety controls – oil-fired burners
        • PROTECTION AGAINST INJURY TO PERSONS
          • 47 General
          • 48 Sharp Edges
          • 49 Enclosures and Guards
          • 50 Materials
          • 51 Rotating or Moving Members
          • 52 Back-Flow Prevention
          • 53 Parts Subject to Pressure
          • 54 Overpressure Protection
          • 55 Risks of Pressure Injection and Cutting
          • 55A Injection Test
          • 56 Switches, Controls, and Interlocks
          • 57 Strength of Support Handles
          • 58 Stability
          • 59 Strength of Mounting
          • 60 Discharge-Fluid Temperature
          • 61 Surface Temperatures
        • PERFORMANCE – GENERAL
          • 62 Details
            • 62.1 All products
            • 62.2 Electrical systems
            • 62.3 Fuel-fired products
          • 63 Instrumentation
            • 63.1 Temperature measurement
            • 63.2 Draft
            • 63.3 Fuel input
          • 64 Installation
            • 64.1 Fixed products – corner installation
            • 64.2 All fixed products – alcove or closet installation
            • 64.3 Fuel-fired fixed products
            • 64.4 All portable products
            • 64.5 Fuel-fired portable products
        • PERFORMANCE – ALL PRODUCTS
          • 65 Normal Operation Tests
            • 65.1 All products
            • 65.2 Gas-fired products
            • 65.3 Oil-fired products with mechanical atomizing burners
          • 66 Maximum Pressure Tests
          • 67 Normal Temperature Test
            • 67.1 General
            • 67.2 Surface temperature test
            • 67.3 Maximum normal load
          • 68 Abnormal Operation Tests
            • 68.1 All products
            • 68.2 Electrically heated products
            • 68.3 Fuel-fired products
          • 69 Hydrostatic Pressure and Strength Test
          • 70 Tests on Gaskets, Seals, and Parts
            • 70.1 Fluid handling parts
            • 70.2 Aging test
            • 70.3 Volume change
            • 70.4 Weight loss
            • 70.5 Gaskets and seals for fuel tank joints
            • 70.6 Cleaning solution
          • 71 Tests on Nonmetallic Enclosures and Guards
            • 71.1 Ball-impact
            • 71.2 Mold stress-relief distortion
            • 71.3 Light and water exposure
            • 71.4 Izod impact
            • 71.5 Tensile impact
          • 72 Drop-Impact Test
          • 73 Test for Strength of Support Handles
          • 74 Tests on Pressure-Regulating Control Switches
            • 74.1 General
            • 74.2 Overpressure protection tests
          • 75 Metallic-Coating-Thickness Test
          • 76 Permanence of Markings
            • 76.1 General
            • 76.2 Cord tags
        • PERFORMANCE – ELECTRICAL SYSTEMS
          • 77 Leakage Current Test
          • 78 Leakage Current Test Following Humidity Conditioning
          • 79 Insulation Resistance Test Following Humidity Conditioning
          • 80 Starting Current Test
          • 81 Input Test
          • 82 Bonding Conductor Tests
          • 83 Dielectric Voltage-Withstand Test
          • 84 Flooding Tests
            • 84.1 General
            • 84.2 Component malfunction or breakdown test
            • 84.3 Overflow test
            • 84.4 Test on polymeric components intended for water-handling
            • 84.5 Water spray test I
            • 84.6 Water spray test II
          • 85 Test on Gripping Areas
          • 86 Tests on Switches and Controls
          • 87 Tests on Temperature Controls
          • 88 Strain-Relief Test
          • 89 Radiation Test
          • 90 Ozone Generation Test
          • 91 Overvoltage Test
        • PERFORMANCE – FUEL-FIRED SYSTEMS
          • 92 Combustion Tests
            • 92.1 Gas-fired products
            • 92.2 Oil-fired products
            • 92.3 Oil-fired products with mechanical-atomizing burners
            • 92.4 Oil-fired products with vaporizing burners
          • 93 Ignition Tests – General
          • 94 Ignition Tests – Gas Fired Products
            • 94.1 Pilot supervision
            • 94.2 Ignition, gas-electric high tension
            • 94.3 Gas-electric hot-wire – reduced voltage
            • 94.4 Gas – electric hot-wire – endurance
            • 94.5 Gas-electric hot-wire – component temperatures
          • 95 Ignition – Oil-Fired Products
            • 95.1 Ignition, electric high-tension – reduced voltage
            • 95.2 Electric high-tension – combustion detectors
            • 95.3 Electric hot-wire – reduced voltage – test 1
            • 95.4 Electric hot-wire – reduced voltage – test 2
            • 95.5 Electric hot-wire – endurance
            • 95.6 Electric hot-wire – component temperatures
            • 95.7 Gas – reduced voltage
            • 95.8 Gas – pilot supervision
            • 95.9 Gas – flame failure response
            • 95.10 Gas – stability
            • 95.11 Gas-electric – ignition
            • 95.12 Gas-electric high-tension
            • 95.13 Gas-electric hot-wire – reduced voltage – test 1
            • 95.14 Gas – electric hot-wire– reduced voltage – test 2
            • 95.15 Gas – electric hot-wire – general
            • 95.16 Manual – general
            • 95.17 Stability
            • 95.18 Ignition flash
            • 95.19 Reduced voltage
          • 96 Blocked Flue Test
          • 97 Combustion Air Interruption Test
            • 97.1 General
            • 97.2 Gas-fired products
            • 97.3 Oil-fired products
          • 98 Undervoltage Test
            • 98.1 General
            • 98.2 Gas-fired products
            • 98.3 Oil-fired products
          • 99 Power Interruption Test
            • 99.1 General
            • 99.2 Gas-fired products
            • 99.3 Oil-fired products
          • 100 Wind Test
            • 100.1 General
            • 100.2 Gas-fired products
          • 101 Stability Test
          • 102 Tests on Antiflooding Devices
          • 103 LP-Gas Container Securement Tests
          • 104 Tests on Fuel Tanks
            • 104.1 All tanks
            • 104.2 Metallic tanks
            • 104.3 Nonmetallic tanks – fuel exposure test
            • 104.4 Nonmetallic tanks – heat aging test
            • 104.5 Low temperature test
            • 104.6 Nonmetallic tank – light and water exposure test
            • 104.7 Nonmetallic tank – leakage test
          • 105 Tests on LP-Gas Fuel Lines and Fittings
            • 105.1 Pressure test
            • 105.2 Torque test
          • 106 Tests on Fuel Oil and Gasoline Fuel Lines and Fittings
            • 106.1 Pull test
            • 106.2 Torque test
            • 106.3 10-Day Moist Ammonia-Air Stress Cracking Test
        • PERFORMANCE – PRODUCTS WITH INTERNAL COMBUSTION ENGINES
          • 107 Backfire-Deflector Test
        • MANUFACTURING AND PRODUCTION TESTS
          • 108 Dielectric voltage-Withstand Test
          • 109 Grounding Continuity Test
          • 110 Fuel System Leakage Test
            • 110.1 Gas-fired products
            • 110.2 Oil-fired products
            • 110.3 Gasoline and oil fuel tanks
            • 110.4 LP-gas fuel systems
          • 111 Manufacturer Production Line Rupture or Burst Disc Overpressure Protection Test
        • MARKING
          • 112 Details
            • 112.1 General
            • 112.2 Permanently connected products
            • 112.3 Component marking
            • 112.4 Cord-connected products
          • 113 Cautionary and Warning Markings
            • 113.1 General
            • 113.2 Servicing
            • 113.3 Gas- and oil-fired products
            • 113.4 Engine driven products
            • 113.5 Electrically operated products
        • INSTRUCTION MANUALS
          • 114 General
            • 114.1 Details
            • 114.2 Operating instructions
            • 114.3 Accessories
            • 114.4 Moving and storage instructions
          • 115 Instructions Pertaining to a Risk of Fire, Electric Shock or Injury to Persons
          • 116 Installation Instructions
          • 117 User-Maintenance Instructions
    • APPENDIX A