Lincoln Electric SVM125-A service manual Control K487-25

Page 36

C-8

C-8

ACCESSORIES

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CONNECTION OF THE K488 SG CONTROL MODULE AND K487 MAGNUM SPOOL GUN TO THE CLASSIC II (SEE FIGURE C.5.)

1.Shut the welder off.

2.Connect the electrode cable from the SG Control Module 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.5 shows the electrode connect- ed for positive polarity. To change polari- ty, shut the welder off and reverse the electrode and work cables at the Classic II output terminals.

3.Connect the K867 Universal adapter to the K492 input cable as shown in Figure C.5. Connect the other end of the adapter to the 14 pin amphenol on the Classic II.

4.Connect the K492 Input Cable to the SG Control Module.

5.Set the slide switch on the SG Control Module to the “Lincoln” position.

6.Place the IDLER switch on the Classic II 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.

7. Adjust wire feed speed at the SG Control Module.

NOTE: For remote control, a K775 remote control is required.

CAUTION

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

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CAUTION

Be sure this switch is set to the “Lincoln” (contact clo- sure) position before attempting to operate the SG Control Module. Incorrect switch position could result in damage to the SG Control Module and/or the

CLASSIC II.

FIGURE C.5

CLASSIC II/K492/K488/K487 SPOOL GUN CONNECTION DIAGRAM

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SPARE

Insulate Each

 

 

14 PIN

82

Classic II Output

 

AMPHENOL

81

Unused Lead

 

42

Terminals are on

 

 

Individually

 

 

41

Opposite Side

 

 

21

 

 

+

 

31

31

 

CV-

 

32

32

 

 

2

2

 

 

 

4

4

 

TO

 

GND

GND

 

K867 UNIVERSAL

 

GREEN

 

WORK

 

 

ADAPTER PLUG

75

75

 

 

 

ELECTRODE CABLE TO

76

76

 

77

77

 

K438 SG CONTROL CABLE

Splice Leads

 

 

 

and Insulate

K488 SG

CONTROL K487-25

MODULE SPOOL GUN

K492

INPUT CABLE

K775 OPTIONAL REMOTE CONTROL

CLASSIC II

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Contents Classic II 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 ClassicSafety Precautions Location and VentilationStoring PRE-OPERATION Engine Service Muffler Undercarriages Spark ArresterElectrical Output Connections Welding Cable ConnectionsAuxiliary Power RECEPTACLES, PLUGS, and HAND-HELD Equipment Machine GroundingCircuit Breakers Classic Table of Contents Operation Section Safety Instructions OperationOperating Instructions General DescriptionOperational Features and Controls Design FeaturesRecommended Applications WelderWelding Capability LimitationsControls and Settings WELDER/GENERATOR ControlsControl of Welding Current Figure B.2 Current ControlsDiesel Engine Controls Return toEngine Operation Before Starting the EngineStarting the Engine Check and fill the engine fuel tankStopping the Engine Cold Weather StartingBREAK-IN Period Welding Operation General InformationIdler Operation After you finish welding Figure B.4 Welding Circuit Connections for Stick WeldingTable B.1 Range Settings for Wire SIZE/SPEED Auxiliary Power 13B-13Table B.2 Generator Power Applications Suggested Power Applications Running Watts Start-up WattsTable of Contents Accessories OPTIONS/ACCESSORIES Accessory Kit K703 Includes the followingTIG Welding Semiautomatic 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 Routine and Periodic Maintenance Engine MaintenanceFigure D.1 OIL Drain and Refill Figure D.2 Tightening the Cooling Blower Belt Daily or Before Starting EngineFirst 50 Hours Every 50 HoursBattery Maintenance Checking Specific GravityWELDER/GENERATOR Maintenance Idler 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 Troubleshooting & Repair HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures PC Board can be damaged by static electricityTroubleshooting 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 Test Procedure Alternator Rotor TestFigure 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 Frequency Counter Method Oscilloscope MethodAdjusting Screw Locking NUT Flashing the Fields DescriptionProcedure Do not remove brush holderScope Settings Normal Open Circuit Voltage Waveform 115VAC SupplyHigh Idle no Load Fine Current Control Rheostat AT Maximum Normal Open Circuit DC Weld Voltage Waveform Machine Loaded Selector Switch AT Maximum Position Typical DC Weld Output Voltage WaveformAlternator Rotor Removal Replacement Replacement Alternator Rotor RemovalFuel 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 Procedure Alternator Stator RemovalVAC Receptacle Circuit Breaker Field Bridge Rectifier Genernator Brush HOLDER/COIL Cables Drill Spot STATOR/ENDBRACKET Mounting Bolt Generator Frame Removal and Replacement Generator Frame Removal Figure F.21 Generator Lead and Cable ConnectionsRope Sling ENGINE/GENERATOR Mounting Holes Generator Armature Removal and Replacement Generator Armature Removal Blower Paddle PADDLE/ARMATURE Mounting BoltsAC Auxiliary Power Receptacle Output Retest After RepairEngine Output Welder DC OutputElectrical Diagrams Section Classic Electrical Diagrams Wiring Diagram CodeRemote 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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