Lincoln Electric IM847-D manual Installed

Page 40

E-3

TROUBLESHOOTING

E-3

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

PROBLEMS

(SYMPTOMS)

POSSIBLE AREAS OF MISADJUSTMENTS(S)

RECOMMENDED

COURSE OF ACTION

Variable or "hunting" arc.

1. Check for proper size contact.

 

 

Make sure the contact tip is not

 

 

worn, free of spatter and not melt-

 

 

ed.

 

2.

Clean and tighten all electrode

 

 

and work connections.

 

3.

Verify the proper polarity is being

 

 

used for the weld procedure.

 

4.

Make sure the proper electrode

 

 

stick-out is being maintained.

 

5.

Check the gas flow rate and mix-

 

 

ture.

 

6.

Verify the gun bushing is tightly to

 

 

the wire drive.

 

7.

Verify the gun is tightly mounted

 

 

to the gun bushing.

The motor thermal LED illuminates. 1. Check for sharp bends in the gun liner.

2.Examine the contact tip for wear and proper size. Replace as nec- essary.

3.Check the gun liner. The welding If all recommended possible areas of electrode should slide easily misadjustment have been checked

through the gun.

and the problem persists, Contact

4.Verify the proper gun liner is your local Lincoln Authorized

installed.

Field Service Facility.

5.Reduce the pressure arm setting.

6.On bench models, make sure the brake tension is not too tight.

7.If using a wire conduit, verify the wire slides easily through the conduit.

 

When the gun trigger is pulled, the

1.

Check all electrode and work

 

 

drive rolls spin but no arc is present.

 

connections.

 

 

 

2.

Verify the gun bushing is tightly to

 

 

 

 

the wire drive.

 

 

 

3.

Verify the gun is tightly mounted

 

 

 

 

to the gun bushing.

 

 

 

4.

Check the control cable and con-

 

 

 

 

nectors for cuts. Verify that no

 

 

 

 

pins are broken or bent.

 

 

 

 

 

 

 

The arc burns back to the tip at the

1.

If the timer kit is installed, reduce

 

 

end of the weld.

 

the amount of burnback time.

 

 

 

 

 

 

 

The gas continues to flow for a long

1.

If the timer kit is installed, reduce

 

 

time at the end of a weld.

 

the amount of postflow time.

 

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.

LF-72

Page 39 Page 41
Image 40
Page 39 Page 41
Contents LF-72 Wire Feeder Safety California Proposition 65 WarningsElectric Shock can kill Welding and Cutting Sparks can Cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcTable of Contents Thank YouSection B Section aSection C Section D Section ESection F P-622Installation Amp Rating Duty CycleLocation Safety PrecautionMounting Bench Mount Swivel MountBoom Mount SuspendedElectric Shock can Kill Weld Cable SizesCoaxial Weld Cables Weld Cable ConnectionAnalog Control Cable 6INSTALLATIONA-6Control Cable Connections Analog Miller Control Cable Adapter K2335-1 Miller Power Source Lincoln Wire FeederPin Function Wire Drive Systems Welding GUN/WIRE Feeder Trigger ConnectorRemote Sense Lead Specifications High Frequency ProtectionWelding GUNS, Torches and ACCES- Sories Figure A.3Procedure for Changing Drive and Idle Roll Sets Wire Drive ConfigurationGun Receiver For use With Bushing Pressure ARM AdjustmentSet the pressure arm as follows See Figure A.6 Wire Reel Loading Spindle PlacementLoading 16 to 44 lb .3 20kg Spools See figure A.8 Loading 30 lb .6 kg Readi-Reels See Figure A.9Weld Wire Routing Figure A.9Shielding GAS Connection Installing Electrode Conduit Kits Figure A.10a For Codes 11209, 11210, 11211 and aboveAluminum Wire Preparations Figure A.12a For Codes 11209, 11210, 11211 and aboveBase Model Bench Model Standard Duty Bench Model Heavy Duty 15, Magnum Typical System Configurations15’, Magnum Pro Safety Precautions OperationCommon Welding Abbreviations Product DescriptionRecommended Processes Required EquipmentFront Panel Controls and Connections Figure B.1 DescriptionBurnback and Postflow Timer KIT Cold FEED/GAS Purge SwitchStep Trigger Interlock Switch Remote Voltage Control KITWire Feed Speed Knob Trigger Connector 5-PIN AmphenolGUN Receiver Bushing K1500-2 Trigger InterlockAccessories Optional KitsOptional Kits Accessories Key Maintenance MaintenanceRoutine Maintenance Periodic MaintenanceFor Codes below 11289 use 9 thru See Figure D.2For Codes above 11290 use Troubleshooting HOW to USE Troubleshooting GuideOutput Problems Installed Wiring Diagram LF-72 Feeder 11075, 11076LF-72 Feeder for Codes 11209, 11210, 11211 L12146-1Diagrams Diagrams Dimension Prints Bench Model Bench Model Standard DutyBench Model Heavy Duty Precaucion Warnung
Top Page Image Contents