Lincoln Electric SVM176-A service manual K350 Adapter Problems, Call LN-23P

Page 34

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F-6

TROUBLESHOOTING AND REPAIR

F-6

Observe Safety Guidelines detailed in the beginning of this manual.

 

 

 

 

K350 ADAPTER PROBLEMS

 

 

 

Since the K350 (-1) adapter is the communication link between the feeder and the power source,symptoms that

 

 

 

seem to indicate a defective feeder may be due to a defective adapter or control cable. If a working feeder and

 

cable is available, connecting it will help to isolate the problem. If this is not convenient, either replace the

 

adapter or follow the troubleshooting steps for the K350.

 

 

 

PROBLEMS

 

POSSIBLE AREAS OF

 

RECOMMENDED

 

(SYMPTOMS)

 

MISADJUSTMENT(S)

 

COURSE OF ACTION

 

Motor wonʼt run. No voltage on the

1.

Disconnect the Work Sensing

1.

If reading is 0 ohms, check the

 

meter. Feeder checks OK and

 

lead from the terminal strip and

 

control cable to the LN-23P.

 

power source has output.

 

with power applied to the K350,

 

 

 

NOTE: Symptoms on this page

 

check for continuity from the #21

 

 

 

 

terminal to #521 on Feeder ”A”

 

 

 

assume that the LN-23P is

 

Terminal strip.

 

 

 

connected to Feeder “A”

2.

2.

If the voltage is 0, check for

 

terminal strip

Check for 24VAC at terminals

 

 

 

605 &606 at PC Board.

 

120vac at terminals #31 & #32.

 

 

 

 

3. Make sure the power source is

 

 

 

 

 

supplying 120vac to the cable.

 

 

1.

Temporarily jumper #602 from

4. Perform the K350 Adapter test.

 

Motor wonʼt run when trigger is

1.

If motor runs, check connections

 

pulled. OCV shows on voltmeter.

 

terminal strip to #610.

 

to relay. Replace 2CR relay.

 

 

 

 

 

If motor does not run check

 

 

 

 

 

leads 602 & 604 from terminal

 

 

 

 

 

strip to PC Board and to 2CR.

 

No voltage control or cannot obtain

1.

Run test with the power source

1.

If desired voltage can be

 

desired voltage.

 

in ʻLOCALʼ control.

 

achieved;

 

 

 

 

 

• Check cable from power

 

 

 

 

 

source to adapter.

 

 

 

 

 

• Check connections from

 

 

 

 

 

Feeder “A” terminal strip to

 

 

2.

Check the Voltage Control

2.

1CR.

 

 

Perform the Potentiometer

 

 

 

potentiometer.

 

test.

 

 

 

 

 

 

 

Feeder A works OK, Feeder B does

1.

Make sure 2CR relay operates

1.

If relay does not operate:

 

not

 

when Feeder “B” trigger is

 

• Check wiring from Feeder”B”

 

 

 

pulled.

 

terminal strip.

 

 

 

 

 

• Perform the K350 Adapter

 

 

 

 

 

test.

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely,

contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed.

Call 1-888-935-3877.

LN-23P

 

Image 34
Contents Safety Depends on You LN-23PFor Engine SafetyPowered equipment Electric Magnetic FieldsFumes and Gases Electric Shock can kill ARC Rays can burnCan be dangerous For Electrically Cylinder may explodeCause fire or explosion If damaged IiiLES Machines À Souder À Précautions DE SûretéPrécautions DE Sûreté Pour Transformateur ET ÀMaster Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications LN-23P InstallationEnvironmental Rating Work Cable and Remote Voltage Safety PrecautionsInput Cable Sensing Work LeadOptional Features Installation Wire Drive Rolls and Guide TubesInnershield GUN and Cable Accessories Power SourceLN-23P Operation Section Table of ContentsOperation Section B Operation Loading the Wire ReelProduct Description Voltage Adjusting Wire Feed SpeedDrive Roll Pressure Making the WeldLN-23P Accessories Section Accessories Section CGUN and Cable Assemblies Enclosed Wire Reel SupportOptional Equipment K350 Adapter KITMaintenance Section Maintenance Section DWire Drive Assembly Maintenance MaintenanceGUN and Cable Maintenance Removing Idle Roll AssemblyCircuit Protection NameplatesLN-23P Theory of Operation Section Section E E-2E-2E-3E-3E-3E-4Theory of Operation Input Power CircuitGeneral Description Figure E.3 Control Circuits Optional Circuits K350 / K350-1ADAPTER KitsK350 / K350-1ADAPTER Kits LN-23P Troubleshooting and Repair Section F Troubleshooting and RepairSection F-1 How To Use Troubleshooting Guide Important Troubleshooting TipsPC Board Troubleshooting Procedures Troubleshooting & RepairElectric Shock Gun Perform Potentiometer Test K350 Adapter Problems Call LN-23PTest Description Wire Feeder TestMaterials Needed Wire Feeder Test Test ProcedureGUN Test 10TROUBLESHOOTING and REPAIRF-10 GUN TestFeed Head Test 12TROUBLESHOOTING and REPAIRF-12 Feed Head TestPotentiometer Test Wire Speed Control Potentiometer 14TROUBLESHOOTING and REPAIRF-14Potentiometer Test K350-1 Adapter Test 16TROUBLESHOOTING and REPAIRF-16 K350-1 Adapter TestMeasurement Points Expected Reading 18TROUBLESHOOTING and REPAIRF-18 Calibration CheckElectrical Diagrams Section G Electrical Diagrams SectionSection G-1 Electrical Diagrams Wiring Diagram Entire Machine M14197Schematic 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.