Lincoln Electric SVM176-A service manual Potentiometer Test

Page 41

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F-13

TROUBLESHOOTING AND REPAIR

F-13

 

POTENTIOMETER TEST

 

 

WARNING

 

 

Service and repair should be performed by only Lincoln Electric factory trained person-

 

 

nel. Unauthorized repairs performed on this equipment may result in danger to the tech-

 

 

nician or machine operator and will invalidate your factory warranty. For your safety and

 

 

to avoid electrical shock, please observe all safety notes and precautions detailed

 

 

throughout this manual.

 

 

If for any reason you do not understand the test procedures or are unable to perform the

 

 

test / repairs safely, contact the Lincoln Electric Service Department for electrical trou-

 

 

bleshooting assistance before you proceed. Call 1-888-935-3877.

 

 

NOTE: The procedures and tests described in this manual are written with the under-

 

 

 

 

standing that the repair technician fully understands the process of locating

 

 

and accessing (within the welding machine) the specific board or device

 

 

involved in each procedure or test.

 

 

TEST DESCRIPTION

 

 

This test will determine if the Speed and Voltage Controls are functioning correctly.

 

 

MATERIALS NEEDED

 

 

Volt/Ohmmeter (Anolog meter preferred}

 

 

Misc. Hand Tools

 

LN-23P

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Contents LN-23P Safety Depends on YouPowered equipment SafetyFor Engine Electric Magnetic FieldsCan be dangerous Electric Shock can kill ARC Rays can burnFumes and Gases Cause fire or explosion If damaged Cylinder may explodeFor Electrically IiiPrécautions DE Sûreté Pour Précautions DE SûretéLES Machines À Souder À Transformateur ET ÀMaster Table of Contents for ALL Sections Table of Contents Installation Section Environmental Rating InstallationTechnical Specifications LN-23P Input Cable Safety PrecautionsWork Cable and Remote Voltage Sensing Work LeadInnershield GUN and Cable Wire Drive Rolls and Guide TubesOptional Features Installation Power Source AccessoriesLN-23P Operation Section B Table of ContentsOperation Section Product Description Loading the Wire ReelOperation Drive Roll Pressure Adjusting Wire Feed SpeedVoltage Making the WeldLN-23P Accessories Section C Accessories SectionOptional Equipment Enclosed Wire Reel SupportGUN and Cable Assemblies K350 Adapter KITMaintenance Section D Maintenance SectionGUN and Cable Maintenance MaintenanceWire Drive Assembly Maintenance Removing Idle Roll AssemblyNameplates Circuit ProtectionLN-23P Section E E-2E-2E-3E-3E-3E-4 Theory of Operation SectionGeneral Description Input Power CircuitTheory of Operation Figure E.3 Control Circuits K350 / K350-1ADAPTER Kits Optional CircuitsK350 / K350-1ADAPTER Kits LN-23P Section F-1 Troubleshooting and RepairTroubleshooting and Repair Section F Important Troubleshooting Tips How To Use Troubleshooting GuideElectric Shock Troubleshooting & RepairPC Board Troubleshooting Procedures Gun Perform Potentiometer Test Call LN-23P K350 Adapter ProblemsMaterials Needed Wire Feeder TestTest Description Test Procedure Wire Feeder TestGUN Test GUN Test 10TROUBLESHOOTING and REPAIRF-10Feed Head Test Feed Head Test 12TROUBLESHOOTING and REPAIRF-12Potentiometer Test Potentiometer Test 14TROUBLESHOOTING and REPAIRF-14Wire Speed Control Potentiometer K350-1 Adapter Test K350-1 Adapter Test 16TROUBLESHOOTING and REPAIRF-16Measurement Points Expected Reading Calibration Check 18TROUBLESHOOTING and REPAIRF-18Section G-1 Electrical Diagrams SectionElectrical Diagrams Section G Wiring Diagram Entire Machine M14197 Electrical DiagramsSchematic Entire Machine L6518 Wiring Diagram K350 Adapter KIT M14247 Wiring Diagram K350-1 Adapter KIT M17514 Machine Schematic for K350/K350-1 Adapter PC Board Assembly for Codes below 10892 G1528-4 PC Board Assembly for Codes 10892 and Higher G4184-3 Schematic for LN-23P Codes 10892 and Higher L11838-3

SVM176-A specifications

The Lincoln Electric SVM176-A is a robust and versatile semiautomatic wire feeder designed to cater to a wide range of welding applications. Known for its reliability and ease of use, the SVM176-A is particularly favored in both industrial and construction settings, where efficiency and performance are paramount.

One of the standout features of the SVM176-A is its compact design. This relatively lightweight unit is easy to transport and can fit into tight spaces, making it an ideal choice for mobile applications or projects that require more maneuverability. The unit's construction is durable and built to withstand the rigors of demanding work environments, ensuring longevity and consistent performance.

The SVM176-A supports various welding processes, including MIG (Metal Inert Gas) and flux-cored arc welding, providing versatility for different materials and thicknesses. This adaptability is enhanced by its ability to accommodate a variety of wire sizes, allowing users to select the ideal wire type for their specific project requirements. The equipment also features adjustable wire feed speed, helping to ensure optimal weld quality by allowing operators to tailor their settings based on the needs of the job.

Innovative technologies in the SVM176-A contribute to its performance. The unit is equipped with a digitally controlled microprocessor that streamlines operations, providing enhanced control over welding parameters. This advanced technology enables users to achieve precise welds consistently, minimizing the risk of defects and improving overall efficiency.

Another remarkable characteristic of the SVM176-A is its user-friendly interface. The unit features easy-to-read displays and intuitive controls, enabling operators to make quick adjustments without having to consult an extensive manual. This is particularly beneficial in fast-paced work environments where time is of the essence.

Furthermore, the Lincoln Electric SVM176-A boasts a range of safety features, including thermal overload protection and a sturdy casing, which safeguard both the equipment and the operator. With these characteristics combined, the SVM176-A stands out as a preferred choice for professional welders seeking reliability, versatility, and operational excellence in their equipment. This exceptional wire feeder continues to uphold Lincoln Electric's commitment to quality and performance in welding technology.