Lincoln Electric SVM125-A service manual Adapter Work Electrode Cable To LN-7

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C-5

C-5

ACCESSORIES

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CONNECTION OF THE LN-7 TO THE CLASSIC II USING K584 INPUT CABLE ASSEMBLY (SEE FIGURE C.2.)

1.Shut the welder off.

2.Connect the electrode cable from the LN-7 to the “+” terminal of the welder. Connect the work cable to the “CV-” terminal of the welder.

NOTE: Welding cable must be sized for current and duty cycle of application.

NOTE: Figure C.2 shows the electrode connected for positive polarity. To change polarity, shut the welder off and reverse the electrode and work cables at the Classic II output terminals .

3.Connect the input cable from the K584-XX Input Cable Assembly to the 14 pin amphenol on the K864 adapter and the input cable plug on the LN- 7.

4.Connect the K864 adapter to the 14 pin amphenol on the Classic II.

5.Place the IDLER switch in the "HIGH" position.

CAUTION

Any increase of the high idle engine RPM by changing the governor setting or overriding the throttle linkage will cause an increase in the AC auxiliary voltage. If this voltage goes over 140 volts, wire feeder control circuits may be damaged. The engine governor set- ting is preset at the factory — do not adjust above RPM specifications listed in this manual.

6. Adjust wire feed speed and voltage at the LN-7.

NOTE: For remote control, a K857 control is required. Connect it to the K864 adapter.

CAUTION

When the welder is in local control, the electrode is always "HOT."

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FIGURE C.2

CLASSIC II/LN-7 WITH K584 INPUT CABLE ASSEMBLY CONNECTION DIAGRAM

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14 PIN

Classic II OutputAMPHENOL Terminals are on

Opposite Side

+ CV-

K864

ADAPTER

TO

WORK

ELECTRODE CABLE

TO LN-7

 

 

LN-7

14 PIN

 

CONTROL

 

BOX

AMPHENOL

 

 

K584-"L" INPUT CABLE

6PIN AMPHENOL

K857

REMOTE CONTROL

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CLASSIC II

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Contents Classic II TM California Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications Classic InstallationSafety Precautions Location and VentilationStoring PRE-OPERATION Engine Service Spark Arrester Muffler UndercarriagesWelding Cable Connections Electrical Output ConnectionsAuxiliary Power RECEPTACLES, PLUGS, and HAND-HELD Equipment Machine GroundingCircuit Breakers Classic Table of Contents Operation Section Operation Safety InstructionsOperating Instructions General DescriptionDesign Features Operational Features and ControlsRecommended Applications WelderLimitations Welding CapabilityWELDER/GENERATOR Controls Controls and SettingsFigure B.2 Current Controls Control of Welding CurrentReturn to Diesel Engine ControlsBefore Starting the Engine Engine OperationStarting the Engine Check and fill the engine fuel tankStopping the Engine Cold Weather StartingBREAK-IN Period Welding Operation General InformationIdler Operation Figure B.4 Welding Circuit Connections for Stick Welding After you finish weldingTable B.1 Range Settings for Wire SIZE/SPEED 13B-13 Auxiliary PowerSuggested Power Applications Running Watts Start-up Watts Table B.2 Generator Power ApplicationsTable of Contents Accessories Accessory Kit K703 Includes the following OPTIONS/ACCESSORIESSemiautomatic Welding TIG WeldingConnection of Lincoln Electric Wire Feeders Connection of the LN-7 to Classic II Using K867 UniversalAdapter see Figure C.1 Adapter Work Electrode Cable To LN-7 Figure C.3 Classic II/LN-25 Connection Diagram With K444-2 Remote Control K487-25 Table of Contents Maintenance Engine Maintenance Routine and Periodic MaintenanceFigure D.1 OIL Drain and Refill Figure D.2 Tightening the Cooling Blower Belt Starting Engine Daily or BeforeFirst 50 Hours Every 50 HoursChecking Specific Gravity Battery MaintenanceIdler Maintenance WELDER/GENERATOR MaintenanceFigure D.3 Major Component Locations Table of Contents Theory of Operation Section Theory of Operation ALTERNATOR, and ProtectionCircuits Excitation Flashing Auxiliary and Field Feedback CoilsInterpole and Series Coils Fine Current Adjustment Current Range SelectorEngine Idler Circuit DC Generator Machines Classic Table of Contents Troubleshooting & Repair Section HOW to USE Troubleshooting Guide Troubleshooting & RepairPC Board can be damaged by static electricity PC Board Troubleshooting ProceduresTroubleshooting Guide Observe Safety GuidelinesDetailed in the beginning of this manual Shunt Field Winding Test Perform the Shunt Field Wind Troubleshooting & Repair Function Problems Troubleshooting & Repair Troubleshooting & Repair Troubleshooting & Repair Welding Problems Alternator Rotor Test Test DescriptionMaterials Needed Alternator Rotor Test Test ProcedureFigure F.2 Measuring Rotor Resistance Classic Figure F.3 Measuring Rotor Resistance to Ground Classic Shunt Field Winding Test Shunt Field Winding Test PIN TAB Idler Solenoid Test Idler Solenoid Test Engine Throttle Adjustment Test Engine Throttle Adjustment Test Oscilloscope Method Frequency Counter MethodAdjusting Screw Locking NUT Description Flashing the FieldsDo not remove brush holder ProcedureScope Settings Normal Open Circuit Voltage Waveform 115VAC SupplyHigh Idle no Load Fine Current Control Rheostat AT Maximum Normal Open Circuit DC Weld Voltage Waveform Typical DC Weld Output Voltage Waveform Machine Loaded Selector Switch AT Maximum PositionAlternator Rotor Removal Replacement Alternator Rotor Removal ReplacementFuel Tank Return Line Mounting Hardware Cable Retainer Bowl Negative Output Terminal Copper Strap on Rear Side Figure F.14 Alternator Cover Removal Figure F.15 Rotor Removal Replacement Alternator Stator Removal and Replacement Alternator Stator Removal ProcedureVAC Receptacle Circuit Breaker Field Bridge Rectifier Genernator Brush HOLDER/COIL Cables Drill Spot STATOR/ENDBRACKET Mounting Bolt Generator Frame Removal and Replacement Figure F.21 Generator Lead and Cable Connections Generator Frame RemovalRope Sling ENGINE/GENERATOR Mounting Holes Generator Armature Removal and Replacement Blower Paddle PADDLE/ARMATURE Mounting Bolts Generator Armature RemovalRetest After Repair AC Auxiliary Power Receptacle OutputEngine Output Welder DC OutputElectrical Diagrams Section Classic Wiring Diagram Code Electrical DiagramsRemote Control Optional Remote Control Optional Wire Feed Module Optional Wire Feed Thermostat * Machine Must not be Running J3 Sensor Idler PC Board M13708 Schematic Idler PC Board M13708 Components Idler PC Board l9902 Schematic Idler PC Board l9902 Components

SVM125-A specifications

The Lincoln Electric SVM125-A is a versatile and highly efficient welding machine that has gained significant recognition in the welding industry. Designed for both professionals and enthusiasts, this machine combines advanced technology with user-friendly features to deliver outstanding performance in a range of welding applications.

One of the standout features of the SVM125-A is its Inverter Technology. This cutting-edge technology allows for lightweight and compact design, making the machine highly portable. The inverter technology also provides a steady arc, which is crucial for achieving clean, high-quality welds. With a duty cycle of 125 amps at a 60% duty cycle, this welding machine can handle a variety of materials and thicknesses, from thin sheet metal to heavier structural components.

The SVM125-A supports multiple welding processes, including MIG, stick, and TIG welding. This versatility makes it an ideal choice for diverse welding tasks, whether you're working in a fabrication shop, doing repair work, or engaged in hobbyist projects. The machine features easy switch functionality, allowing users to quickly shift between welding processes without complicated setup.

Another notable characteristic is the machine's user-friendly interface. The intuitive control panel includes clear indicators and knobs that allow for easy adjustments of voltage and wire feed speed. This design is especially helpful for novice welders, providing them with the confidence to make adjustments as needed and ensuring optimal weld quality.

Safety is also a priority with the SVM125-A. The machine is equipped with thermal overload protection, which automatically shuts it down in case of overheating, preventing damage to the unit and ensuring operator safety. Additionally, the machine features a robust construction that emphasizes durability, making it suitable for demanding work environments.

Portability is enhanced through its lightweight design, and the built-in carrying handle makes it easy to transport from one job site to another. The SVM125-A is also compatible with a variety of welding accessories, further increasing its adaptability and functionality.

In conclusion, the Lincoln Electric SVM125-A stands out as a well-rounded welding machine that integrates advanced technology with user-friendly features. Its versatility in welding processes, robust design, and emphasis on safety and usability make it a valuable tool for welders at all skill levels. Whether for professional use or personal projects, the SVM125-A is a reliable choice that delivers exceptional performance and quality.
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