Lincoln Electric SVM114-C Sequence of Operation, Loading Electrode, Mounting 10 to 30 LB Spools

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B-5

OPERATION

B-5

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SEQUENCE OF OPERATION

LOADING ELECTRODE

WARNING

ELECTRIC SHOCK can kill.

Unless an optional output control or internal contactor is used with the LN-25™, the electrode circuit is electrically “Hot” when the power source is on.

Turn off the power source while mounting electrode coils.

MOUNTING 22 TO 30 LB READI-REEL®COILS

The early models of the LN-25™ were factory equipped with a K363-P Readi-Reel®Adapter which is required to load Lincoln 22 to 30 lb Readi-Reel®coils. Later models require the optional K363-P adapter kit.

a. Make certain that the threaded locking collar is tight and securely locks the adapter on the spindle (See Figure B.2).

b. Rotate the spindle and adapter so the retaining spring is at the 12 o’clock position.

c.Position the Readi-Reel®so that it will rotate in a clockwise direction when feeding (wire is to be dereeled from bottom of the coil).

d.Set one of the Readi-Reel®inside cage wires on the slot in the retaining spring tab.

e.Lower the Readi-Reel®to depress the retaining spring and align the other inside cage wires with the grooves in the molded adapter.

f.Slide cage all the way onto the adapter until the retaining spring “pops up” fully.

WARNING

Check to be sure the retaining spring has fully returned to the locking position and has securely locked the Readi-Reel®cage in place. Retaining spring must rest on the cage, not the welding electrode.

g.To remove Readi-Reel®from Adapter, depress re- taining spring tab with thumb while pulling the Readi-Reel®cage from the molded adapter with both hands. It is not necessary to remove adapter from spindle.

h.Load wire into wire drive per Loading Wire Drive

Section.

MOUNTING 10 TO 30 LB SPOOLS

For 12" Diameter Spools:

a. Remove the locking collar and the Readi-Reel®adapter shipped on the 2" diameter spindle (adapter is not required).

b. Place the spool on the spindle so the brake holding pin enters one of the holes in the back side of the spool. Be sure the wire comes off the spool in a clockwise direction when dereeled from the bottom of the coil.

c. Replace and tighten the locking collar.

d. See Loading Wire Drive section for loading instructions.

For 8" Diameter Spools (Requires optional K468 Spindle Adapter for 8" Spools):

a. Remove the locking collar and the Readi-Reel®adapter shipped on the 2" diameter spindle (adapter is not required).

b. Slide S18221 Spindle Adapter onto the 2" spindle so the brake holding pin enters the adapter pin hole.

c. Place the spool on the spindle so the adapter tab enters one of the holes in the back side of the spool. Be sure the wire comes off the spool in a clockwise direction when dereeled from the bottom of the coil.

d. Replace and tighten the Locking Collar.

e. Load wire into wire drive per Loading Wire Drive Section.

MOUNTING 13 OR 14 LB INNERSHIELD COILS (Requires Optional K435 Spindle Adapter for 14 lb Coils.)

a. Remove the locking collar and the Readi-Reel®adapter shipped on the 2" diameter spindle (adapter is not required).

b. Mount K435 Spindle Adapter and Innershield coil per the Instructions (S18256) included with the K435.

LN-25™

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Contents Semiautomatic Wire Feeder California Proposition 65 Warnings SafetyCan be dangerous Electric Shock can killFumes and Gases Iii Welding and Cutting Sparks can Cause fire or explosionCylinder may explode if damaged Sûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Installation Section Table of ContentsTechnical Specifications LN-25 InstallationWire Feed Speed CurrentrentPower Source Connection Safety PrecautionsGUN Cable Connection to Feeder INVERTEC, CV300 and Other Newer Lincoln Power SourcesWith CV Adapter For GMA GUN and CablesWeld Cable Connection Wire Feed Drive Roll and Guide Tube KitsElectrode Cable Connection Work Cable ConnectionLN-25 Operation Section Read and Understand Entire Section Before Operating Machine Operation Welding Capability Wire Feed Mode Switch Electrode Polarity SwitchWire Speed Dial and Range Switch LN-25 Instruments ControlsWork Clip Lead GAS Post PRE-FLOW Timers OptionalAWG Remote ARC Voltage Control OptionalLoading Electrode Sequence of OperationMounting 22 to 30 LB READI-REELCOILS Mounting 10 to 30 LB SpoolsIdle Roll Pressure Setting Loading Wire DriveGrooves READI-REEL Inside Cage Wires 6OPERATIONB-6Setting Constant Wire Feed Speed CV Mode Presetting Wire Feed SpeedSetting ARC Sensing Wire Feed Speed CC Mode Minimum Arc VoltsMaking a Weld Figure B.4 VV CC Wire Speed SettingCylinder may explode if damaged Procedure AT END of CoilWelding Motor Overload Shutdown Circuit Protection and Automatic ShutdownOvervoltage Shutdown Accessories Section C Accessories SectionLN-25 Option Chart AccessoriesHow to use Table C.1 Table C.1GAS Solenoid KIT K430-2 for Codes Optional AccessoriesK434-1 GAS Flow Timer KIT K432 Remote Control Cable Assembly K433 Power Source Remote BOXRemote Output Control Options and Control Cable Assemblies LN-25 Contactor KIT K443-1 for CodesK625, K626, K627 Remote Control Cable Assembly K439 Remote Extension Cable AssemblyK624-1 42V Remote Output Control Module K444, K444-1 or K444-2 Remote Voltage Control KITTo GUN Switch Connect Leads to Pins a and C Connector Must be Insulated in this AreaStyle a DIA. HoleMaintenance Section Adjusting Speed Sensor Module MaintenanceRoutine Maintenance Calibration of LN-25 Wire Speed Dial LN-25 Theory of Operation Section Figure E.1 Theory of Operation Block DiagramTheory of Operation Input Power CircuitGeneral Description Control Circuit OperationTrigger Circuit Feedback and Control CircuitsContactor Optional CircuitsGAS Solenoid Later ModelsControl PC Board Fuses Protective Devices CircuitsLN-25 Troubleshooting and Repair Section HOW to USE Troubleshooting Guide 2TROUBLESHOOTING and REPAIRF-2PC Board Troubleshooting Procedures Troubleshooting and RepairFeeding Problems Feeding Problems Hall Effect Test Description GAS Solenoid Valve and Solenoid PC Board TestMaterials Needed For Codes below 10500 onlyScrew Wire Reel Retaining Collar Test ProcedureCase Door GAS Solenoid ValveFigure F.2 Solenoid Leads Troubleshooting and Repair 512 GAS Solenoid Valve and Solenoid PC Board Test624A 621 J11 PC Board for K430 GAS Solenoid KITLN-25 For Codes Above 10500 only GAS Solenoid Valve and Control PC Board TestFigure F.5 Control BOX Cover Removal For Codes Above 10500 onlyFigure F.6. Solenoid Leads Solenoid LeadsControl PC Board Solenoid Circuitry Test Figure F.7. Applied Voltage Polarity667 555 691 621 500 512 690 G3425LN-25 Hall Effect Module Test 539 G1757 Hall Effect Module TestG2196 539 541 500 Figure F.11 Control PC Board Codes Above LN-25 Wire Drive Motor Test Drive Motor Lead IN-LINE Connector Hall Effect Module Contactor & Contactor PC Board Test Contactor & Contactor PC Board Test Contactor Test ProcedureContactor Coil Leads S20963667 28TROUBLESHOOTING and Repair F-28Contactor PC Board Test J14 LN-25 Tools Required Contactor PC Board ReplacementRepair Procedure Contactor PC Board Replacement33TROUBLESHOOTING and Repair F-33 Figure F.17 Control PC Board Replacement Figure F.21. Control PC Board Codes 9812 and below Control PC Board ReplacementJ14 Figure F.22. Plug Locations for L12253- Control BoardFigure F.24. Control Board Replacement PC Board Screw For Codes below Contactor ReplacementContactor Replacement 40TROUBLESHOOTING and Repair F-40For Codes Above Figure F.26 Phillips Head Screwdriver Wrench Pliers Purge Switch Leads Solenoid Plug J11 Present ReplacementGAS Solenoid Valve AND/OR Solenoid PC Board if GAS SolenoidFigure F.29. Solenoid Assembly Wiring Codes 9812 and below Figure F.31. GAS Solenoid Assembly for Earlier Codes Phillips Head Screwdriver Wrench Slot Head Screwdriver Drive Motor and Gearbox Replacement and Access to 48TROUBLESHOOTING and Repair F-48Hall Effect Module Mylar Insulation Electrode CableG1757 Figure F.34. Drive Motor Replacement Retest After Repair LN-25 Table of Contents Electrical Diagrams Section Electrical DiagramsOptional 42 Volt Remote Output Control Wiring Diagram Above Code 11140 G4679Wiring Diagram Code 10556 Thru 10500 L10925 Wiring Diagram Code 10100 Thru 10500 L9644 Wiring Diagram below Code 9900 L7545 LN-25 Across the ARC Model Schematic Complete Machine Codes Above 11140 G5366Schematic Complete Machine below Code 9900 only G1833 Schematic Control PC BD Above Code 11140 G4616-5 Schematic Control PC BD Code 10556 Thru 10558 G3424-3 Schematic Control PC BD Code 10100 Thru 10500 G2194 L12253-3 PC Board Assembly Control Abovr Code 11140 L12253-3L12253 G3425 PC Board Assembly Control Code 10556 Thru 10558 G3425-3PC Board Assembly Control Code 10100 Thru 10500 G2196-1 LN-25 Control PC Board Assembly Control below Code 9900 G1757-6Contactor Schematic Contactor PC BD Above Code 10500 M10965Schematic Contactor PC BD Code 10100 Thru 10500 M17621 Electrical Diagrams Electrical Diagrams L10863 PC Board Assembly Contactor Above Code 10500 L10863-1PC Board Assembly Contactor Code 10100 Thru 10500 L9670-1 PC Board Assembly Contactor below Code 9900 L9185-2