Lincoln Electric SVM134-A service manual Gasoline Engine Controls, Return Section TOC

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B-6

B-6

OPERATION

FIGURE B.3 – GASOLINE ENGINE CONTROLS

1.

IDLER CONTROL TOGGLE SWITCH

 

2.

IGNITION TOGGLE SWITCH

1

3.

OIL PRESSURE LIGHT

 

4.START PUSHBUTTON

5.CHOKE CONTROL

6.

ENGINE HOUR METER

2

7.

AMMETER

 

3

7

 

CURRENT RANGE

FINE CURRENT

 

 

SELECTION

ADJUSTMENT

50

190-120

 

60

240-160

130-80

70

40

220

 

90

80

30

MAX

 

MIN

 

 

 

 

 

90

20

 

 

 

100

10

IDLER

IGNITION

OIL

START

5

PRESSURE

CHOKE

 

 

 

REMOTE

 

 

 

 

CONTROL

 

4

6

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GASOLINE ENGINE CONTROLS

See Figure B.3 for the location of the following features:

1.IDLER CONTROL TOGGLE SWITCH: Adjusts the running speed of the engine. The switch has two positions, "HIGH" and "AUTO." In "HIGH," the engine runs continuously at high idle. In "AUTO," the idler control works as follows:

Welding: The engine accelerates to high speed when the electrode touches the work and strikes a welding arc. The engine returns to low idle approx- imately 15 seconds after welding stops, as long as no auxiliary power is being drawn.

Auxiliary Power: The engine accelerates to high speed when power is drawn at the receptacle for lights or tools. The engine returns to low idle approximately 15 seconds after demand for auxiliary power stops.

2.IGNITION CONTROL TOGGLE SWITCH: Has two positions, ON and OFF. When the switch is in the ON position, the engine can be started by pressing the START pushbutton. When the switch is placed in the OFF position, the engine stops.

3.OIL PRESSURE LIGHT: Lights when the engine oil pressure drops to an unsafe level. If the light comes on within 30 seconds after startup, the engine should be stopped by placing the IGNITION switch in the OFF position.

4.START PUSHBUTTON: Press this button to start the gasoline engine. The IGNITION switch must be in the ON position.

NOTE: If you press the START pushbutton when the engine is running, you may damage the engine flywheel gear or starter motor.

6.ENGINE HOUR METER: Records engine running time. Use the meter to determine when to perform required maintenance.

7.AMMETER: Shows whether the charging circuit is performing its job of charging the battery when the engine is running. The meter will register discharge during starting, but then the needle should return to a position slightly toward positive during running. The needle will hold position in the center when the engine stops.

CLASSIC I

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Contents Classic I TM Safety California Proposition 65 WarningsElectric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcMaster Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical Specifications ClassicStoring Safety PrecautionsLocation and Ventilation PRE-OPERATION Engine Service Cooling System MufflerExhaust Spark Arrester TrailersMachine Grounding Figure A.1 Ground Stud LocationAuxiliary Power Receptacle PLUGS, and HAND-HELD Equipment Electrical Output ConnectionsWelding Cable Connections Cable size for combined lengthClassic Table of Contents Operation Section Operating Instructions Safety InstructionsOperation Operational Features and Controls Recommended ApplicationsWelder GeneratorControls and Settings WELDER/GENERATOR ControlsControl of Welding Current Figure B.2 Current ControlsGasoline Engine Controls Return Section TOCStarting the Engine Engine OperationBefore Starting the Engine BREAK-IN Period Stopping the EngineCold Weather Starting Welding Operation After you finish weldingAuxiliary Power Table B.1 Range Settings for Wire SIZE/SPEEDTable of Contents Accessories OPTIONS/ACCESSORIES Semiautomatic Welding AccessoriesConnection of Lincoln Electric Wire Feeders Wire Feed Module see Figure C.1Connection of the LN-25 to Classic I Across the ARC withClassic Table of Contents Maintenance Safety Precautions Routine and Periodic Maintenance Engine MaintenanceFigure D.1 OIL Drain and Refill MAX MIN Figure D.2A Engine Coolant Drain Plug After cleaning or when installing a new spark plug Gap Specifications 0.032 inch .8 mmSet the terminal gap with a feeler gauge or gapping Tool. See Figure D.4Battery Maintenance Classic I charging system is NegativeWELDER/GENERATOR Maintenance Return to Section Return to Section TOCIdler Maintenance Figure D.5 Major Component Locations Classic Table of Contents Theory of Operation Section General Description BATTERY, STARTER, Engine Alternator and OIL Switch CircuitTheory of Operation Main SHUNT, Interpole and Series Coils ENGINE, Main Generator Armature and Frame and DC ExciterExcitation Flashing Engine Idler Circuit Fine Current AdjustmentCurrent Range Selector DC Generator Machines Return to Section TOC Table of Contents Troubleshooting & Repair Section Troubleshooting & Repair HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures PC Board can be damaged by static electricityDetailed in the beginning of this manual Troubleshooting GuideObserve Safety Guidelines Shunt Field Winding Test Main Generator Throttle Adjustment Test Output Problems Function Problems Troubleshooting & Repair Engine Problems Welding Problems Materials Needed DC Exciter TestTest Description Test Procedure DC Exciter TestFigure F.2 Exciter Cover Removal Small Flex Lead Solid Shunt Coil and Series Coil Resistance TestsIdler Solenoid Test Troubleshooting & Repair Main Generator Shunt Field Winding Test Main Generator Shunt Field Winding Test Figure F.6 Plug P10 PIN Assignments TAB Engine Throttle Adjustment Test Engine Throttle Adjustment Test Strobe Tach MethodEngine Throttle Adjustment Test Adjust High IdleAdjust Low Idle Flashing the Fields DescriptionProcedure Flashing the FieldsFigure F.11 Brush HOLDER/BATTERY Jumper Connections High Idle no Load Fine Current Control Rheostat AT Maximum Scope SettingsNormal Open Circuit Voltage Waveform 115VDC Supply Normal Open Circuit DC Weld Voltage Waveform Machine Loaded Selector Switch AT Maximum Typical DC Weld Voltage WaveformDC Exciter Armature and Field Coils Removal and Replacement DC Exciter Armature and Field Coils DC Exciter Armature Removal ProcedureReassembly Field Coils Removal Procedure Perform the DC Exciter Armature Removal ProcedureMain Generator Frame Removal and Replacement Replacement Main Generator Frame Removal Bolt / NUTPerform the DC Exciter Armature Removal Figure F.16 Selector Switch Lead Removal Terminal LeadFigure F.18 Choke Control Cable Removal Loosen Here Main Generator Frame Removal Figure F.20 Front Panel Fastener Removal Troubleshooting & Repair Feet Remove Mounting NUTS, Washers BoltsPerform the DC Exciter Armature Reassembly Procedure Main Generator Armature Removal and Replacement Main Generator Armature Removal Armature is now free to be removed from the engineDC Auxiliary Power Receptacle Output Retest After RepairEngine Output Welder DC OutputElectrical Diagrams Section Electrical Diagrams Wiring Diagram ClassicWire Feed Module Wiring Diagram Wiring Diagram Wire Feed ModuleSchematic Idler PC Board 16990 MPC Board Assembly Idler PC Board Idler