Lincoln Electric IM10005 manual 5INSTALLATIONA-5, Electrical Connections, Machine Grounding

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A-5INSTALLATIONA-5

Cable Installation

Install the welding cables to your BULLDOG™ 140 as follows. See Figure A.1 for the location of parts.

1.The gasoline engine must be OFF to install weld- ing cables.

2.Remove the 1/2 - 13 flanged nuts from the output terminals.

3.Connect the electrode holder and work cables to the weld output terminals. You can connect either cable to either terminal, since the BULLDOG™ 140 provides AC weld current.

4.Tighten the flanged nuts securely.

5.Be certain that the metal piece you are welding (the “work”) is securely connected to the work clamp and cable.

6.Check and tighten the connections periodically.

CAUTION

•Loose connections will cause the output termi- nals to overheat. The terminals may eventually melt.

•Do not cross the welding cables at the output terminal connection. Keep the cables isolated and separate from one another.

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Lincoln Electric offers a welding accessory kit with the properly specified welding cables. See the ACCESSORIES section of this manual for more infor- mation.

ELECTRICAL CONNECTIONS

MACHINE GROUNDING

Because this portable engine driven welder creates its own power, it is not necessary to connect its frame to an earth ground, unless the machine is connected to premises wiring (home, shop, etc.)

To prevent dangerous electric shock, other equipment to which this engine driven welder supplies power must:

WARNING

1.Be grounded to the frame of the welder using a grounded type plug.

2.Be double insulated.

Do not ground the machine to a pipe that carries explosive or combustible material.

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When the BULLDOG™ 140 is mounted on a truck or a trailer, the machine generator ground stud MUST be securely connected to the metal frame of the vehi- cle. See Figure A.1. The ground stud is marked with

the symbol .

PLUGS AND HAND-HELD EQUIPMENT

For further protection against electric shock, any electrical equipment connected to the generator receptacles must use a three-blade, grounded type plug or an Underwriter’s Laboratories (UL) approved double insulation system with a two-blade plug.

Ground fault protection is recommended for hand held equipment.

WARNING

Never operate this machine with damaged or defective cords. All electrical equipment must be in safe condition.

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AUXILIARY POWER RECEPTACLES

The control panel of the BULLDOG™ 140 features two auxiliary power receptacles:

•A 20 amp, 120 volt duplex (double outlet) recepta- cle

•A 20 amp 240 volt simplex (single outlet) recepta- cle.

See Figure A.1.

Through these receptacles the machine can supply up to 4,000 rated continuous watts and 5,500 surge watts of single-phase AC power.

BULLDOG™ 140

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Contents Bulldog Safety California Proposition 65 WarningsElectric Shock can kill Welding and Cutting Sparks can Cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcPlease Examine Carton and Equipment For Damage Immediately On-Line Product RegistrationTable of Contents Installation Technical Specifications Bulldog 140 K2708-1Safety Precautions Location and VentilationStoring Engine Exhaust can killPRE-OPERATION Engine Service StackingTilting LiftingElectrical Output Connections Welding Cable ConnectionsTable A.1 Recommended Welding Cable Size and Length 5INSTALLATIONA-5 Auxiliary Power ReceptaclesElectrical Connections Machine GroundingPremises Wiring Circuit BreakersTable A.2 Electrical Device USE with the Bulldog Type Common Electrical Devices Possible ConcernsOperation Limitations WELDER/GENERATOR ControlsOutput Panel Controls Engine Operation Gasoline Engine ControlsBefore Starting the Engine Starting the EngineGenerator Operation Table B.1 Generator Power Applications Welding Operation Control Function / Operation Current Control DialMaterial Thickness Electrode Type Size Setting Welding GuidelinesWhat Happens in the Arc? Welding circuit for Stick shielded metal arc weldingCorrect Welding Position Correct Way to Strike An ArcCorrect Arc Length Correct Welding SpeedPractice Common MetalsTypes of Welds Fillet Joints PenetrationMultiple Pass Welds Welding in the Vertical PositionVertical-Up Welding Vertical-Down WeldingHow to Hardface the Sharp Edge Metal to Ground Wear Overhead WeldingWelding Sheet Metal Hardfacing To Reduce WearWelding Cast Iron Cast Iron Plate PreparationSelecting Electrodes Out-of-Position Group AWS E6011 High-Speed Group AWS E6013Low Hydrogen Group AWS E7018 Accessories OPTIONS/ACCESSORIESLincoln Electric Accessories Maintenance Routine and Periodic MaintenanceEngine Maintenance Engine Adjustments Finger Guard AreaTable D.1 Engine Maintenance Parts Spark Plug ServiceOperational Clearance GENERATOR/WELDER Maintenance Screws BrushesFigure D.7. Major Component Locations Troubleshooting HOW to USE Troubleshooting GuideSymptoms Contact your local Lincoln Authorized Field Service FacilityTroubleshooting Engine requires service to head, head gasket, and/or valves Diagrams Dimension Print M22146Bulldog Precaucion Guards off
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