Lincoln Electric IM602-A manual Troubleshooting

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E-8

 

TROUBLESHOOTING

E-8

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

 

 

PROBLEMS

POSSIBLE

RECOMMENDED

 

 

(SYMPTOMS)

CAUSE

COURSE OF ACTION

 

 

 

 

 

 

PROBLEMS

Digital Ammeter not working properly 1.

The meter PC board may not be

or erratic display.

 

receiving the auxiliary or sensing

 

 

voltages. Check plug P3 and

 

 

plugs P12 & P13. See wiring

 

 

diagram.

 

2.

The current feedback circuit may

 

 

be faulty. From the shunt to the

 

 

control board. See wiring dia-

 

 

gram.

 

3.

The Digital meter PC board may

 

 

be faulty.

 

 

 

Analog Meters not reading, or not

1.

The meters may not be receiving

reading correctly.

 

voltage or current feedback sig-

 

 

nals. Make sure plug P3 is

 

 

securely plugged in the control

 

 

board and plug J14 (in-line con-

 

 

nector) is securely seated in the

 

 

plug assembly from the control

 

 

board.

 

2.

Check the current feedback and

 

 

voltage feedback circuits. See

 

 

wiring diagram.

 

3.

The meter(s) may be defective.

220VAC receptacle not working.

1.

Check the circuit breaker. Reset

(50/60 Hz Europe and Export mod-

 

if necessary.

els only)

 

 

 

2.

Check for broken or loose con-

 

 

nections in the 220VAC circuit.

 

 

See wiring diagram.

Contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

DC-655

Image 34
Contents DC-655 Safety California Proposition 65 WarningsE C T R I C S H O C K c a n kill Welding and Cutting Sparks can Cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcVSAFETY ViSAFETY Thank You Table of Contents Height Width Depth Weight InstallationTechnical Specifications DC-655 Input Hertz Input Ampere Type 80CSmaw SAW Input Power Three PhaseGmaw Fcaw NRTL/C NrtlSelect Suitable Location Safety PrecautionsElectrical Input Connections Reconnect Procedure Input Power Supply ConnectionsTable A.1 Output ConnectionsElectrode and Work Cables LOW Inductance TerminalAuxiliary Power Control Connections Terminal Strip 2 T.S.2 Terminal Strip 1 T.S.1Terminal Strips General Warnings OperationGeneral Description Recommended Processes and EquipmentDesign Features and Advantages Welding CapabilityLOCAL/REMOTE Control Switch When this Controls and SettingsPower ON/OFF Switch This tog Output Terminals ON/REMOTE When thisFigure B.2 Lower Case Front Controls & Connections Machine Protection Welding Performance CC Mode ARC Gouging CV Mode CURRENT-LIMITINGCC Mode HOT Start CC Mode ARC ForceAutomatic Wire Feeders AccessoriesSEMI-AUTOMATIC Wire Feeders Field Installed OptionsAccessories General Maintenance MaintenanceSafety Precautions Troubleshooting HOW to USE Troubleshooting GuideProblems Troubleshooting Trol circuit. #75, #76, #77 Problems Troubleshooting Troubleshooting Troubleshooting PC Board Troubleshooting Guide Firing P.C. Board PC Board Troubleshooting Guide Control P.C. Board10TROUBLESHOOTINGE-10 Diagrams Negative PositiveGND Negative Positive Receptacle Convenience, this extended #21 lead should be taped to 655 Wiring Diagram for Codes 10501,10503, 10504 Diagrams Diagrams Diagrams Diagrams Aviso DE Keep your head out of fumes Turn power off before servicing