Lincoln Electric IM904 manual Troubleshooting

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TROUBLESHOOTING

E-4

 

 

 

 

Observe Safety Guidelines detailed in the beginning of this manual.

 

 

 

 

 

 

 

 

 

 

PROBLEMS

 

 

 

POSSIBLE

 

 

(SYMPTOMS)

 

 

 

CAUSE

 

 

 

 

 

 

 

OUTPUT PROBLEMS

 

 

 

 

 

 

 

 

 

No output or reduced output the first

 

 

 

1. Check input voltages, fuses and

 

 

 

 

 

time power is applied to the

 

 

 

 

input voltage reconnect proce-

 

 

machine.

 

 

 

 

dures. See Installation section.

 

 

 

 

 

 

2.

If high input voltage (380VAC or

 

 

 

 

 

 

 

higher) is applied, the capacitors

 

 

 

 

 

 

 

may need conditioning. Let the

 

 

 

 

 

 

 

“unloaded” machine idle for 30

 

 

 

 

 

 

 

minutes.

 

 

 

 

 

 

 

 

 

Machine loses output while welding.

 

 

 

1. Check to make sure the fans are

 

 

The thermal indicator light is lit.

 

 

 

 

running and operating correctly.

 

 

Normal welding output returns after

 

 

 

 

 

 

 

about 10 minutes.

 

 

 

2.

Welding application may exceed

 

 

 

 

 

 

 

recommended duty cycle.

 

 

 

 

 

 

3.

Dirt and dust may have clogged

 

 

 

 

 

 

 

the cooling channels. Blow out

 

 

 

 

 

 

 

unit with clean, dry compressed

 

 

 

 

 

 

 

air.

 

 

 

 

 

 

4.

Air intake and exhaust louvers

 

 

 

 

 

 

 

may be blocked due to inade-

 

 

 

 

 

 

 

quate clearance around machine.

 

 

 

 

 

 

 

 

 

 

Machine has low OCV, and loses

 

 

 

1.

Check for faulty connection on

 

 

output while attempting to weld.

 

 

 

 

plug J1 on Control Board and

 

 

 

 

 

 

 

plug J1 on Current Sense Board.

 

 

 

 

 

 

2.

Check for faulty Current Sense

 

 

 

 

 

 

 

Board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RECOMMENDED COURSE OF ACTION

If all recommended possible areas of misadjustment have been checked and the problem persists,

Contact your local Lincoln Authorized Field Service Facility.

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.

INVERTEC STT II (CE)

Image 27
Contents Invertec S T T II CE Safety Depends on YouCalifornia Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéThank You Table of Contents Technical Specifications -INVERTEC STT II CE For Code InstallationINPUT- Three Phase only Tilting Select Suitable LocationInput Connections StackingGround Connection Input Cable Installation and CON- NectionOutput Connections Input Voltage Reconnect ProcedureWire Feeder Output Connections To Operate at ProcedureGeneral Warnings Safety PrecautionsOperation Operating InstructionsOperating Controls Design Features and AdvantagesRecommended Equipment Welding Capability3B. Peak Current Display Meter This Power Switch Turns outputAuxiliary Power Circuit Breaker Wire Feeder Receptacle This isPeak Current Welding Parameters and GUIDE- LinesWelding Procedures for STT Options / Accessories AccessoriesLN-742 or STT-10 Wire Feeder Connection Instructions Figure C.3 STT-10 to STT II Connection Input Filter Capacitor Discharge Procedure MaintenancePreventive Maintenance HOW to USE Troubleshooting Guide TroubleshootingFacility Problems Symptoms Possible CauseAuthorized Field Service Recommended Course of ActionProblems Possible Symptoms Cause Troubleshooting Troubleshooting Problems Symptoms Possible Cause Wiring Diagram Invertec STT II CE for Code Diagrams Wiring Diagram Invertec STT II CE for CodeDIAGRAMSF-3 Dimension Print STT II CEInvertec STT II CE Invertec STT II CE Invertec STT II CE Precaucion Warnung