TROUbLESHOOTING | Lincoln Electric LN-9 GMA, LN-9F GMA guide

E-5

E-5

TROUbLESHOOTING

TROUbLESHOOTING GUIDE

Observe Safety Guidelines

detailed in the beginning of this manual.

PRObLEMS (SYMPTOMS)

Gun trigger works and arc can be struck. Unit then shuts down while welding, or voltage output too low to establish arc (LN-9 ACTUAL VOLTS meter reading is low, zero or negative when trigger is closed).

POSSIbLE AREAS OF

MISADJUSTMENT(S)

WIRE FEEDING PRObLEMS

1.Check to see if the wire feeder or power source "Electrode Polarity" switches are set properly. Set Polarity Switches in proper position. See the topic "Electrode Polarity Switch" in the Operation section.

2.Check to make sure lead #21 has continuity (zero ohms) to the work piece.

3.Check that the power source voltage control is set for REMOTE. R3S or DC-power source voltage control switch must be set to REMOTE.

4.Check that the LN-9 GMA control cable leads or weld cables are properly connected to the power source. Refer to the connection diagram for the LincoIn power source being used.

5.Check to see if the 1/8 A fuse on Voltage P.C. board is blown. If it is, determine cause of fuse blowing.

6.Determine whether the welding power source is able to supply SET voltage. If not, reset the output range controls of the power source so it can supply SET voltage.

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 your local authorized field service facility before you proceed.

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

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Lincoln Electric LN-9 GMA, LN-9F GMA manual TROUbLESHOOTING

Contents

Safety Depends on You LN-9 GMA and LN-9F GMA Wire Feeder Safety Electric Shock can kill Iii Welding and Cutting Sparks can Cause fire or explosion Précautions DE Sûreté Thank You TAbLE of Contents TAbLE OF CONTENTS cont’d P127, P125, P107 & P289 Series ViiiSection E Section F Width Height Technical SpecificationsLN-9 GMA and LN-9F GMA Wire Feeder Mounting the Unit Installing the LN-9 GMA Roll and 4-ROLL ModelsAttaching the Wire Reel Stand Mounting the Wire Feed Unit Routing the Electrode Power Input CAbLE ASSEMbLYElectrical Connections LN-9 GMA and LN-9F GMA Figure A.3 LN-9F GMA Control bOX Figure A.2 Strain Relief Clamp Installation 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 Direct Work Lead Connection Machine Grounding For GMA GUN CAbLES Connecting the GUN CAbLE to the Wire Feeder Cylinder may explode if damaged Hooking UP GMA Shielding GAS Operating Instructions Safety Precautions K436 LN-9F GMA 2-ROLL and K583-1 LN-9F GMA 4-ROLL General DescriptionRecommended Processes and Equipment K424 LN-9 GMA 2-ROLL and K568-1 LN-9 GMA 4-ROLL DC Constant Voltage Power Sources Controls and Settings Operation Operation Circuit bREAKER Power Supply FuseCircuit Protection and Automatic Shutdown Avoiding Grounding Lead Protector GLP Shutdown Automatic Shutdown Changing Drive Rolls for 2-ROLL Wire Feeders Drive Roll Installation Guide Tube Detail Changing Drive Rolls for 4-ROLL Wire Feeders Large Figure b.7a Threaded Locking Collar Wire Loading Feeding Electrode and bRAKE Adjustment Loading a 50-60 Lb .7-27.2 KG. Coil Using K1504-1 Coil Reel Loading a 50 or 60 Lb. Coil ADJUSTAbLE Wire Reel bRAKE Innershield Coils K378 Reel Mounting Stand Loading and Feeding 13-14 Lb For TWO-ROLL Feeders Pressure Adjustment Knob Idle Roll Pressure SettingRoll Wire Feeders DC-250, DC-400, or DC-600 Adjust the Power SourceAdjust the LN-9 GMA Controls Pulse Power 500, DC650 PRO CV-400, CV-500-I Select Acceleration Starting CharacteristicsRUN-IN Feature Voltage Control Response Making a Weld Procedure AT END of CoilSecurity of Weld Procedure Settings Auxiliary Equipment Contacts Optional Equipment and AccessoriesPower Input CAbLE ASSEMbLIES K196, K595, K596 Wire Reel Stands and Mountings READI-REEL Adapters Attaching the Wire Reel StandsWire Reel Door KIT Spindle for READI-REELS and 2 I.D. Spools K162-H Universal Wire Reel Stand K1524-1 BURNbACK Timer KIT K419 Wire Feeder Accessories Pulse Power Filter Conversion KIT K442-1 GMA Timer KIT K418Dual Process KIT K317 For Wire Feeders Dual Procedure KIT K319 K320 Flux Tank Loading Swivel Platform K178-1Undercarriage K163 Continuous Flux Feed Tank K320 K58 Magnetic Separator Aluminum Electrode TAbLE C.2 Drive Roll and Guide TUbE KitsKit Roll Solid Steel Electrode Cored Electrode Adapter Routine MaintenancePeriodic Maintenance Coils with 1 Spindle Figure D.1 Speed Sensor Module Location Proper Speed Sensor Module Mounting Figure D.2 Switch Requirements Figure D.2 LN-9 GMA Connectors TROUbLESHOOTING Wire Feeding PRObLEMS TROUbLESHOOTING Guide Gun trigger will not feed wire. Digital meter is not lit Grounding Lead Protector Shutdown in the Operation section TROUbLESHOOTING Welding PRObLEMS Starting Characteristics Wire LN-9 GMA WIRING LN-9F GMA LN-9 GMA Dimension Print LN-9F GMA Dimension Print 1 Wire Drive Unit Control bOX LN-9F Dimension Print 2Page Precaucion Keep your head out of fumes LN-9 GMA Wire Feeder