Lincoln Electric LN-9F GMA, LN-9 GMA manual TROUbLESHOOTING Guide, Wire Feeding PRObLEMS

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E-2

E-2

TROUbLESHOOTING

Observe Safety Guidelines

detailed in the beginning of this manual.

TROUbLESHOOTING GUIDE

PRObLEMS (SYMPTOMS)

Drive rolls turn but wire will not feed, or wire feeding is rough or uneven.

POSSIbLE AREAS OF

MISADJUSTMENT(S)

WIRE FEEDING PRObLEMS

1.Check that the gun cable is not kinked and/or twisted. Keep the cable as straight as possible. Inspect the cable and replace if necessary.

2.Check for wire jammed in the gun and cable. Remove wire from the gun and cable - feed in new wire. Note any obstruction. Replace the gun and cable if necessary.

3.Check for incorrect drive rolls and guide tubes, or incorrect drive roll assembly or pressure setting. Be sure the wire diameter being used is stamped on the drive rolls and guide tubes. Replace if necessary. Check for proper pressure setting and assembly.

4.Check to see if the gun cable is dirty. Clean the cable per manual instructions.

5.Check for worn drive roll or idle roll. Replace or reverse split drive roll type.

6.Check to see if the electrode is rusty and/or dirty. Replace the electrode if it is rusty. If conditions are extremely dirty or electrode is old (solid wire only) put a wiper on the wire before it enters the guide tube. Use a piece of cloth or felt saturated with "Pyroil B" held around the wire with a light clamp.

7.Check for a worn nozzle liner. Replace nozzle liner if necessary.

8.Check for partially flashed or melted contact tip. Replace the contact tip if necessary.

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 necessary tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-800-833-WELD or 216-383-2531.

LN-9 GMA and LN-9F GMA Wire Feeder

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Contents LN-9 GMA and LN-9F GMA Wire Feeder Safety Depends on YouSafety Electric Shock can kill Welding and Cutting Sparks can Cause fire or explosion IiiPrécautions DE Sûreté Thank You TAbLE of Contents TAbLE OF CONTENTS cont’d Viii Section ESection F P127, P125, P107 & P289 SeriesWidth Height Technical SpecificationsLN-9 GMA and LN-9F GMA Wire Feeder Installing the LN-9 GMA Roll and 4-ROLL Models Attaching the Wire Reel StandMounting the Wire Feed Unit Mounting the UnitRouting the Electrode Power Input CAbLE ASSEMbLYElectrical Connections LN-9 GMA and LN-9F GMA Figure A.2 Strain Relief Clamp Figure A.3 LN-9F GMA Control bOXInstallation Can kill Figure A.5 Connection of LN-9 GMA to DC-600 Power Sources Figure A.6 Connection of LN-9 GMA to DC-1000 Power Sources 75 76 77 Installation Figure A.9 Connection of LN-9 GMA to V300 Power Sources Machine Grounding Direct Work Lead ConnectionConnecting the GUN CAbLE to the Wire Feeder For GMA GUN CAbLESHooking UP GMA Shielding GAS Cylinder may explode if damagedSafety Precautions Operating InstructionsGeneral Description Recommended Processes and EquipmentK424 LN-9 GMA 2-ROLL and K568-1 LN-9 GMA 4-ROLL K436 LN-9F GMA 2-ROLL and K583-1 LN-9F GMA 4-ROLLDC Constant Voltage Power Sources Controls and Settings Operation Operation Power Supply Fuse Circuit Protection and Automatic ShutdownAvoiding Grounding Lead Protector GLP Shutdown Circuit bREAKERAutomatic Shutdown Drive Roll Installation Changing Drive Rolls for 2-ROLL Wire FeedersGuide Tube Detail Changing Drive Rolls for 4-ROLL Wire Feeders Large Wire Loading Figure b.7a Threaded Locking CollarLoading a 50-60 Lb .7-27.2 KG. Coil Using K1504-1 Coil Reel Feeding Electrode and bRAKE AdjustmentADJUSTAbLE Wire Reel bRAKE Loading a 50 or 60 Lb. CoilLoading and Feeding 13-14 Lb Innershield Coils K378 Reel Mounting StandFor TWO-ROLL Feeders Pressure Adjustment Knob Idle Roll Pressure SettingRoll Wire Feeders Adjust the Power Source Adjust the LN-9 GMA ControlsPulse Power 500, DC650 PRO CV-400, CV-500-I DC-250, DC-400, or DC-600Starting Characteristics RUN-IN FeatureVoltage Control Response Select AccelerationMaking a Weld Procedure AT END of CoilSecurity of Weld Procedure Settings Optional Equipment and Accessories Power Input CAbLE ASSEMbLIES K196, K595, K596Wire Reel Stands and Mountings Auxiliary Equipment ContactsAttaching the Wire Reel Stands Wire Reel Door KITSpindle for READI-REELS and 2 I.D. Spools K162-H READI-REEL AdaptersUniversal Wire Reel Stand K1524-1 Wire Feeder Accessories BURNbACK Timer KIT K419GMA Timer KIT K418 Dual Process KIT K317 For Wire FeedersDual Procedure KIT K319 Pulse Power Filter Conversion KIT K442-1Swivel Platform K178-1 Undercarriage K163Continuous Flux Feed Tank K320 K320 Flux Tank LoadingK58 Magnetic Separator TAbLE C.2 Drive Roll and Guide TUbE Kits Kit Roll Solid Steel ElectrodeCored Electrode Aluminum ElectrodeRoutine Maintenance Periodic MaintenanceCoils with 1 Spindle AdapterProper Speed Sensor Module Mounting Figure D.1 Speed Sensor Module LocationFigure D.2 LN-9 GMA Connectors Figure D.2 Switch RequirementsTROUbLESHOOTING TROUbLESHOOTING Guide Wire Feeding PRObLEMSGun trigger will not feed wire. Digital meter is not lit Grounding Lead Protector Shutdown in the Operation section TROUbLESHOOTING Welding PRObLEMS Starting Characteristics LN-9 GMA WIRING WireLN-9F GMA LN-9 GMA Dimension Print LN-9F GMA Dimension Print 1 Wire Drive Unit LN-9F Dimension Print 2 Control bOXPage Precaucion LN-9 GMA Wire Feeder Keep your head out of fumes