Lincoln Electric SVM103-C Gasoline Engine Controls, 20 AMP, 120 Volt Duplex Receptacle

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B-5		OPERATION			B-5

5. GROUND STUD: Provides a connection point for			7. 20 AMP, 240 VOLT RECEPTACLE: Connection
connecting the machine case to earth ground for			point for supplying 240 volt power to operate one
the safest grounding procedure.			electrical device.
6. 20 AMP CIRCUIT BREAKERS (2): Provide sepa-			8. 20 AMP, 120 VOLT DUPLEX RECEPTACLE:
rate overload current protection for the 120 volt			Connection point for supplying 120 volt power to
and 240 volt receptacles.			operate one or two electrical devices.
		FIGURE B.2 – GASOLINE ENGINE CONTROLS
2			3	4	5
					6

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POWER ARC 4000

70	80
MIN.
MAX.	90

	100
AIR
IN
ENGINE	ELECTRODE SELECTION GUIDE
EXHAUST

	1		LINCOLN
			ELECTRIC
		AIR	AIR
		AIR	AIR
		OUT	OUT

1.	FUEL SHUTOFF VALVE	6.	CHOKE
2.	FUEL TANK AND CAP	7.	RECOIL STARTER
3.	MUFFLER	8.	OIL DRAIN PLUG
4.	ROTARY STOP SWITCH	9.	OIL FILL PLUG
5.	AIR CLEANER

7

8

9

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GASOLINE ENGINE CONTROLS

See Figure B.2 for the location of the following fea- tures:

1.FUEL SHUTOFF VALVE: Stops the flow of gaso- line from the fuel tank to the carburetor. Should be closed whenever you are finished using the POWER-ARC 4000. Must be opened before you start the engine.

2.FUEL TANK AND CAP: Holds 1.0 gallon (3.8 liters) of unleaded gasoline. Contains a 50 micron fuel filter molded at the outlet port.

NOTE: If you use any other alternate fuel tank or supply, be sure to use a recommended in- line fuel filter.

3.MUFFLER: Reduces engine noise output. Does not serve as a spark arrester. See SPARK ARRESTER in the INSTALLATION section of this manual.

4.ROTARY STOP SWITCH: Stops the engine by grounding the ignition circuit.

5.AIR CLEANER: Filters intake air to the carburetor. See ENGINE MAINTENANCE in the MAINTE- NANCE section of this manual for details about the specific type of air cleaner to use.

6.CHOKE: Provides a richer air/fuel mixture for cold engine starting con- ditions. See the topic ENGINE OPERATION, below, for details on setting the choke.

POWER-ARC 4000

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Contents Safety Depends on You POWER-ARCCalifornia Proposition 65 Warnings SafetyElectric Shock can kill Welding Sparks can cause fire or explosion Précautions DE Sûreté Master Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications POWER-ARC InstallationSafety Precautions Location and VentilationStoring PRE-OPERATION Engine Service Cert. Kool Bore Spark ArresterWelding Cable Connections Electrical Output ConnectionsCable Size for 125 ampAuxiliary Power Receptacles Machine GroundingPlugs and HAND-HELD Equipment Circuit Breakers Premises WiringThese Devices Without POWER-ARC Table of Contents Operation Section Operation Safety InstructionsOperating Instructions General DescriptionDesign Features Advantages Operational Features and ControlsRecommended Applications Welding CapabilityGENERATOR/WELDER Controls Controls and Settings20 AMP, 120 Volt Duplex Receptacle Gasoline Engine ControlsEngine Operation Before Starting the EngineStarting the Engine For a HOT Engine To USE the Generator AS AN Auxiliary Power Supply Generator OperationGeneral Information Suggested Power Applications Running Watts Start-up Watts Table B.1 Generator Power ApplicationsWelding Operation Table B.2 Welding APPLICATIONS/ELECTRODE Selection Guide Welding GuidelinesOperation What Happens in the Arc? Correct Welding Position Correct Arc Length Use the following PracticeDo the following Butt WeldsPenetration Fillet WeldsVertical-Down Welding Vertical-Up WeldingOverhead Welding Hardfacing To Reduce WearWelding Sheet Metal Cast Iron Plate Preparation Welding Cast IronHigh-Speed Group AWS E6013 Out-of-Position Group AWS E6011Low Hydrogen Group Stable-Arc E7018 Table of Contents Accessories Section Accessories OPTIONS/ACCESSORIESLincoln Electric Accessories Table of Contents Maintenance Section Routine and Periodic Maintenance MaintenanceEngine Maintenance Engine AdjustmentsFigure D.2 Clean Rotating SCREEN/FINGER GUARD/DEBRIS Guard Table D.1 Engine Maintenance Schedule Do not attempt to polish slip rings while engine is running GENERATOR/WELDER MaintenanceFigure D.6. Major Component Locations Table of Contents Theory of Operation Section ENGINE, EXCITATION, Rotor and Stator Theory of OperationFigure E.3 Field Excitation and Auxiliary Power Rotor Field Feedback and Auxiliary PowerWeld Winding and Reactor Auxiliary Power Overcurrent ProtectionTable of Contents Troubleshooting & Repair Section HOW to USE Troubleshooting Guide Troubleshooting & RepairOutput Problems TroubleshootingOr contact your local Lincoln Electric Authorized Field SerVice Facility Local Lincoln Electric Authorized Field Service FacilityTroubleshooting Rotor Resistance Test Engine Problems Troubleshooting Engine Throttle Adjustment Rotor Voltage Test This procedure takes approximately 15 minutes to performTest Description Materials NeededRotor Voltage Test Test ProcedureRotor Resistance Test This procedure takes approximately 25 minutes to performRotor Resistance Test Figure F.3 Brushes Retained with Cable TIE This procedure takes approximately 20 minutes to perform Engine Throttle Adjustment TestStrobe-tach Method Frequency Counter MethodOscilloscope Method Wing NUT High Speed Stop Screw Scope Settings Normal Open Circuit Weld Voltage WaveformHigh Idle no Load Normal Open Circuit Voltage Waveform 115 VAC Supply Typical Weld Output Waveform Machine LoadedMachine Loaded to 125 Amps AT 23 VAC Description Brush Removal and ReplacementProcedure Brush Removal and ReplacementProcedure Rheostat Removal and Replacement Figure F.7 Rheostat Removal This procedure takes approximately 35 minutes to perform Capacitor AND/OR Diode Bridge Removal and ReplacementFigure F.8 Location and Discharging the Field Capacitor Procedure Capacitor Removal and REPLACE- MentFigure F.8A Field Diode Bridge Location Procedure Field Diode Bridge Removal and ReplacementSTATOR/ROTOR Removal and Replacement This procedure takes approximately 3 hours to performInstructions STATOR/ROTOR Removal and Replacement Troubleshooting & Repair Rotor Removal Procedure Figure F.12 Checking ROTOR-STATOR AIR GAP Retest After Repair Auxiliary Power Receptacle OUTPUT1Engine Output WELDER/GENERATOR OUTPUT1Return to Section TOC Table of Contents Diagrams Section Wiring Diagram Power ARC DiagramsDIAGRAMSG-3 DIAGRAMSG-4 Dimension Print Power ARC Return to Section TOC SVM Error Reporting Form