Lincoln Electric SVM103-A service manual Figure B.2 Gasoline Engine Controls

Page 19

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B-4

 

OPERATION

 

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

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2

 

 

AIR

 

IN

 

ENGINE

 

EXHAUST

1

LINCOLN

ELECTRIC

AIR

AIR

OUT

OUT

 

 

3

4

 

 

 

 

POWER ARC

4000

 

70

80

 

 

MIN.

 

 

 

MAX.

90

 

 

 

100

 

 

ELECTRODE SELECTION GUIDE

 

 

11

12

5

6

7

8

9

10

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1.

FUEL SHUTOFF VALVE

7.

AIR MIXTURE ADJUSTMENT SCREW

2.

FUEL TANK AND CAP

8.

RECOIL STARTER

3.

MUFFLER

9.

CHOKE

4.

PIERCING STOP SWITCH

10.

FUEL MIXTURE ADJUSTMENT SCREW

5.

AIR CLEANER

11.

OIL DRAIN PLUG

6.

THROTTLE

12.

OIL FILL PLUG

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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.PIERCING STOP SWITCH: Stops the engine by grounding the spark plug.

5.AIR CLEANER: Filters intake air to the carbure- tor. See ENGINE MAINTENANCE in the MAIN- TENANCE section of this manual for details about the specific type of air cleaner to use.

6.THROTTLE: Adjusts the running speed of the engine. The engine runs at high idle

when not under load. Rotating the spring-loaded throttle clockwise can temporarily reduce engine speed to

low idle speed. Releasing the throttle returns the speed to high idle.

POWER-ARC 4000

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Contents POWER-ARC TM4000 POWER-ARC SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionPrécautions DE Sûreté Master Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications POWER-ARC InstallationLocation and Ventilation Safety PrecautionsStoring PRE-OPERATION Engine Service Cable Size and Length Power ARCElectrical Output Connections Welding Cable ConnectionsPlugs and HAND-HELD Equipment Auxiliary Power ReceptaclesCable Installation Machine GroundingCircuit Breakers Premises WiringType Common Electrical Devices Possible Concerns Table A.2 Electrical Device USE with the POWER-ARCTable of Contents Operation Section General Description Safety InstructionsOperation Operating InstructionsWelding Capability Operational Features and ControlsDesign Features Advantages Recommended ApplicationsGENERATOR/WELDER Controls Controls and SettingsGasoline Engine Controls Figure B.2 Gasoline Engine ControlsBefore Starting the Engine Engine OperationStarting the Engine Running the Engine Stopping the EngineBREAK-IN Period Generator Operation To USE the Generator AS AN Auxiliary Power SupplyGeneral Information Table B.3 Generator Power Applications Welding Operation To USE the POWER-ARC 4000 for WeldingAfter YOU Finish the Weld Welding Guidelines Material Thickness Electrode Type Size SettingStick Welding ARC Welding CircuitCorrect WAY to Strike AN ARC 12/95 POWER-ARCFour Factors of Successful Welding ElectrodeCorrect Welding Speed Correct ARC LengthTable of Contents Accessories Lincoln Electric Accessories OPTIONS/ACCESSORIESBriggs and Stratton Accessories Table of Contents Maintenance Engine Maintenance Routine and Periodic MaintenanceFigure D.2 Clean Rotating SCREEN/FINGER GUARD/DEBRIS Guard Figure D.4 SET Spark Plug GAP GENERATOR/WELDER Maintenance Table D.2 Engine Maintenance PartsPart Part Number Figure 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 Trouble Shooting & Repair Section HOW to USE Troubleshooting Guide Troubleshooting & RepairOutput Problems Troubleshooting GuideOr contact your local Lincoln Local Lincoln Electric Authorized Troubleshooting & Repair Troubleshooting & Repair Engine Problems Engine Problems Welding Problems Test Description Rotor Voltage TestMaterials Needed Ground Stud Lead 200A Connection Output Panel Test ProcedureRotor Resistance Test Rings SlipCable TIE Brushes Figure F.3 Brushes Retained with Cable TIEEngine Throttle Adjustment Test Oscilloscope Method MarkStrobe-tach Method Frequency Counter MethodNUT Figure F.5 Location of Engine Throttle Adjustment NUTNormal Open Circuit Weld Voltage Waveform Scope SettingsHigh Idle no Load Normal Open Circuit Voltage Waveform 115 VAC Supply Machine Loaded Typical Weld Output WaveformMachine Loaded to 125 Amps AT 23 VAC Description Brush Removal and ReplacementFigure F.6 Brushes Retained with Cable TIE ProcedureProcedure Rheostat Removal and Replacement Figure F.7 Rheostat Removal Capacitor AND/OR Diode Bridge Removal Replacement Procedure Capacitor Removal and Replacement Capacitor AND/OR Diode Bridge Removal and ReplacementProcedure Diode Bridge Removal and Replacement Instructions STATOR/ROTOR Removal and ReplacementTerminals Stator Removal ProcedureTIE Wrap OutputFigure F.10 Stator END Bracket Support and THRU-BOLTS Thru Bolts Support Nuts POWER-ARCReassembly Procedure Rotor Removal ProcedureRotor THRU-BOLT Rotor Feeler GaugeWELDER/GENERATOR OUTPUT1 Auxiliary Power Receptacle OUTPUT1Retest After Repair Engine OutputPOWER-ARC Electrical Diagrams Table of ContentsSection G POWER-ARC Electrical DiagramPOWER-ARC POWER-ARC