Lincoln Electric IM10005 manual Operation

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B-1

OPERATION

B-1

 

 

 

SAFETY INSTRUCTIONS

Read and understand this entire section before oper- ating your BULLDOG™ 140.

WARNING

Do not attempt to use this equipment until you have thoroughly read all the operation and main- tenance manuals supplied with your machine. They include important safety precautions; detailed engine starting, operating, and mainte- nance instructions; and parts lists.

ELECTRIC SHOCK can kill.

•Do not touch electrically live parts or electrodes with your skin or wet clothing.

•Insulate yourself from the work and ground.

•Always wear dry insulating gloves.

FUMES AND GASES can be dangerous.

•Keep your head out of fumes.

•Use ventilation or exhaust to remove fumes from breathing zone.

WELDING SPARKS can cause fire or explosion.

•Keep flammable material away.

•Do not weld on containers that have held combustibles.

ARC RAYS can burn.

• Wear eye, ear, and body protection.

ENGINE EXHAUST can kill.

• Use in open, well ventilated areas or vent exhaust to the outside.

• Do not stack anything on or near the engine.

MOVING PARTS can injure.

•Do not operate this equipment with any of its doors open or guards off.

•Stop the engine before servicing it.

•Keep away from moving parts.

Only qualified personnel should install, use, or ser- vice this equipment.

GENERAL DESCRIPTION

The BULLDOG™ 140 is a generator/welder designed for home use and other non-commercial applications. As a generator it can supply up to 4,000 continuous watts (or 5,500 surge watts) of 120/240 volt, single-phase AC power. As a welder it provides 125 amps of AC constant current for welding with AC stick electrodes. A single dial provides continuous adjustment of welding output. The machine is lightweight, portable, and can be lifted by two people.

The Lincoln warranty covers the BULLDOG™ 140 (exclud- ing the engine) for 3 years from the date of purchase. The engine is covered by the engine manufacturer’s warranty policy.

RECOMMENDED APPLICATIONS

GENERATOR

The BULLDOG™ 140 gives AC generator output for medi- um use, non-commercial demands. For more details on operating the generator, see GENERATOR OPERATION in the OPERATION section of this manual.

WELDER

The BULLDOG™ 140 provides excellent constant current AC welding output for stick (SMAW) welding. For more details on using the machine as a welder, see WELDING OPERATION in the OPERATION section of this manual.

OPERATIONAL FEATURES AND CONTROLS

The BULLDOG™ 140 was designed for simplicity. Therefore, it has very few operating controls. A single dial on the control panel lets you select either generator or welding use. For welding, the same dial selects continuous current output over the machine’s 70 to 125 amp range.

The gasoline engine controls include a recoil starter, choke, and rotary stop switch. See ENGINE OPERATION in the OPERATION section of this manual and the engine owner’s manual for details about starting, running, stopping, and breaking in the gasoline engine.

WELDING CAPABILITY

The BULLDOG™ 140 is rated 125 amps, 20 volts at 30% duty cycle on a ten-minute basis. This means that you can load the welder to 125 amps for three minutes out of every ten-minute period. The machine is also capable of higher duty cycles at lower output currents. You can load the welder to 100 amps for six minutes out of ten for a 60% duty cycle.

The current is continuously variable from 70 to 125 amps AC. The BULLDOG™ 140 can weld with all 3/32 and most 1/8 inch diameter Lincoln AC electrodes.

BULLDOG™ 140

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Contents Bulldog California Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding and Cutting Sparks can Cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéOn-Line Product Registration Please Examine Carton and Equipment For Damage ImmediatelyTable of Contents Technical Specifications Bulldog 140 K2708-1 InstallationEngine Exhaust can kill Safety PrecautionsLocation and Ventilation StoringLifting PRE-OPERATION Engine ServiceStacking TiltingElectrical Output Connections Welding Cable ConnectionsTable A.1 Recommended Welding Cable Size and Length Machine Grounding 5INSTALLATIONA-5Auxiliary Power Receptacles Electrical ConnectionsCircuit Breakers Premises WiringType Common Electrical Devices Possible Concerns Table A.2 Electrical Device USE with the BulldogOperation Limitations WELDER/GENERATOR ControlsOutput Panel Controls Gasoline Engine Controls Engine OperationStarting the Engine Before Starting the EngineGenerator Operation Table B.1 Generator Power Applications Control Function / Operation Current Control Dial Welding OperationWelding Guidelines Material Thickness Electrode Type Size SettingWelding circuit for Stick shielded metal arc welding What Happens in the Arc?Correct Welding Speed Correct Welding PositionCorrect Way to Strike An Arc Correct Arc LengthPractice Common MetalsTypes of Welds Welding in the Vertical Position Fillet JointsPenetration Multiple Pass WeldsVertical-Down Welding Vertical-Up WeldingHardfacing To Reduce Wear How to Hardface the Sharp Edge Metal to Ground WearOverhead Welding Welding Sheet MetalCast Iron Plate Preparation Welding Cast IronSelecting 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 Finger Guard Area Engine AdjustmentsTable D.1 Engine Maintenance Parts Spark Plug ServiceOperational Clearance Screws Brushes GENERATOR/WELDER MaintenanceFigure D.7. Major Component Locations HOW to USE Troubleshooting Guide TroubleshootingContact your local Lincoln Authorized Field Service Facility SymptomsTroubleshooting Engine requires service to head, head gasket, and/or valves Diagrams M22146 Dimension PrintBulldog Precaucion Guards off
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