Lincoln Electric SVM 113-A service manual Machine Grounding, Plugs and HAND-HELD Equipment

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A-6

INSTALLATION

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Cable Installation

Install the welding cables to your WELDANPOWER 125 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. Normally, the electrode cable is connected to the positive (+) output termi- nal.

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 terminals to overheat. The terminals may eventually melt.

Do not cross the welding cables at the output termi- nal connection. Keep the cables isolated and sepa- rate from one another.

Lincoln Electric offers a welding accessory kit with the

properly specified welding cables. See the Accessories section of this manual for more informa- tion.

MACHINE GROUNDING

Because the WELDANPOWER 125 cre- ates its own power from its gasoline- engine driven generator, you do not need to connect the machine frame to

an earth ground. However, for best protection against electrical shock, connect a heavy gauge wire (#8 AWG or larger) from the ground stud located on the bottom center of the output panel (see Figure A.1) to a suitable earth ground such as a metal pipe driven into the ground.

WARNING

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

When the WELDANPOWER 125 is mounted on a truck or a trailer, the machine generator ground stud MUST be securely connected to the metal frame of the vehicle. See Figure A.1.

The ground stud is marked with the symbol.

PLUGS AND HAND-HELD EQUIPMENT

For further protection against electric shock, any elec- trical equipment connected to the generator recepta- cles must use a three-blade, grounded type plug or an Underwriter’s Laboratories (UL) approved double insu- lation system with a two-blade plug. Lincoln offers an accessory plug kit that has the right type of plugs. See the Accessories section of this manual for details.

If you need ground fault protection for hand-held equipment, in-line ground fault current interrupter (GFCI) cord sets that meet UL and OSHA requirements are also available as an option. See the Accessories section of this manual for details.

AUXILIARY POWER RECEPTACLES

The control panel of the WELDANPOWER 125 features two auxiliary power receptacles:

A 20 amp, 115 volt duplex (double outlet) receptacle (15 amp CSA).

A 20 amp 230 volt simplex (single outlet) receptacle (15 amp CSA).

See Figure A.1.

CAUTION

The 20 amp, 115 volt duplex receptacle is “split phase.” Damage will result if you attempt to connect both sides of this receptacle in parallel to a load.

Through these receptacles the machine can supply up to 4,500 watts of single-phase AC power (3500 watts CSA). The machine output voltages meet UL stan- dards and fall within ± 10% of the rated voltage. The output frequency falls within ± 3% of rated frequency (60 Hz).

WELDANPOWER 125

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Contents Weldanpowertm Safety California Proposition 65 WarningsElectric Shock can kill Cylinder may explode if damaged Précautions DE Sûreté Master Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical Specifications WeldanpowerSafety Precautions Location and VentilationStoring PRE-OPERATION Engine Service Electrical Output Connections Welding Cable ConnectionsAuxiliary Power Receptacles Machine GroundingPlugs and HAND-HELD Equipment Premises Wiring Circuit BreakersThese Devices Without Table of Contents Operation Section Safety Instructions OperationOperating Instructions General DescriptionOperational Features and Controls Design Features AdvantagesRecommended Applications Welding CapabilityControls and Settings WELDER/GENERATOR ControlsGasoline Engine Controls Figure B.2 Gasoline Engine ControlsEngine Operation Before Starting the EngineStarting the Engine Stopping the Engine For Best Engine StartingWelding Operation BREAK-IN PeriodGeneral Information LOW OIL SensingTo USE the Weldanpower 125 for WELD- ING TIG WeldingTable B.2 Electrode Selection Guide Auxiliary Power To USE the Weldanpower 125 AS AN Auxiliary Power SupplyTable B.3 Generator Power Applications Table of Contents Accessories OPTIONS/ACCESSORIES Lincoln Electric AccessoriesBriggs and Stratton Accessories Table of Contents Maintenance Routine and Periodic Maintenance Engine MaintenanceFigure D.3 Clean Finger Guard MaintanenceFigure D.5 SET Spark Plug GAP WELDER/GENERATOR Maintenance Table D.2 Engine Maintenance PartsFigure D.6 Major Component Locations Table of Contents Theory of Operation Section ENGINE, EXCITATION, Rotor and Stator Idler BoardRotor Field Feedback Auxiliary Power Engine Idle Control Auxiliary Power Overcurrent ProtectionWeld WINDING, Output Rectifier and Choke Figure E.4 Weld WINDING, Output Rectifier and ChokeTable of Contents Trouble Shooting & Repair Section Troubleshooting & Repair HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures Electric Shock can killTroubleshooting Guide Output ProblemsOutput Rectifier Troubleshooting & Repair Perform the Engine Throttle Engine Problems Main Stator Winding Test Engine Throttle Adjustment Troubleshooting & Repair Weldanpower Rotor Voltage Test Test DescriptionMaterials Needed Test Procedure Rotor Voltage TestRotor Resistance Test Rotor Resistance Test Figure F.3 Brushes Retained with Cable TIE Output Rectifier Bridge Test Output Rectifier Bridge Test Main Stator Test Main Stator Test Figure F.6 Main Stator Molex Plug Test Points Rotor Flashing Circuit Test Rotor Flashing Circuit Test WP125 Idler Engine Throttle Adjustment Test Test Procedure Figure F.12 Idle Speed Adjustment Screw Locations Figure F.13 LOW Idle Adjustment NUT on Idler Solenoid TOC Scope Settings Normal Open Circuit Weld Voltage WaveformHigh Idle no Load Output Control AT Maximum Normal Open Circuit Voltage Waveform 115 VAC Supply Typical Weld Output Waveform Machine LoadedMachine Loaded to 125 Amps AT 25 VAC Abnormal Open Circuit Weld Voltage Waveform Brush Removal and Replacement DescriptionProcedure Figure F.14 Brushes Retained with Cable TIEProcedure Rheostat Removal and Replacement Rheostat Removal and Replacement Field Capacitor Removal and Replacement Field Capacitor Removal and Replacement Field Diode Bridge Removal and Replacement Field Diode Bridge Removal and Replacement Figure F.18 Field Diode Bridge Location Idler Printed Circuit Board Removal Replacement Carefully remove the board Output Rectifier Bridge Removal Replacement Output Rectifier Bridge Removal and Replacement Troubleshooting & Repair Output Choke Removal and Replacement Output Choke Removal and Replacement Section TOC STATOR/ROTOR Removal and Replacement InstructionsStator Removal Procedure Troubleshooting & Repair Rotor Removal Procedure Reassembly ProcedureFigure F.24 Checking ROTOR-STATOR AIR GAP Feeler Gauge Troubleshooting & Repair Auxiliary Power Receptacle OUTPUT1 Retest After RepairEngine Output WELDER/GENERATOR OUTPUT1Weldanpower Table of Contents Diagrams Section Wiring Diagram Code 10158 Diagrams SchematicIdler PC Board M17578 Dimension Print Weldanpower Weldanpower M17578 Idler PC Board M17578-1M17578 Idler PC Board Bill of Materials DescriptionWeldanpower