Lincoln Electric SVM114-C Welding and Cutting Sparks can Cause fire or explosion, Iii

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iii

SAFETY

iii

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WELDING and CUTTING

SPARKS can

cause fire or explosion.

6.a. Remove fire hazards from the welding area. If this is not possible, cover them to prevent the welding sparks from starting a fire.

Remember that welding sparks and hot materials from welding can easily go through small cracks and openings to adjacent areas. Avoid welding near hydraulic lines. Have a fire extinguisher readily available.

6.b. Where compressed gases are to be used at the job site, special precautions should be used to prevent hazardous situations. Refer to “Safety in Welding and Cutting” (ANSI Standard Z49.1) and the operating information for the equipment being used.

6.c. When not welding, make certain no part of the electrode circuit is touching the work or ground. Accidental contact can cause overheating and create a fire hazard.

6.d. Do not heat, cut or weld tanks, drums or containers until the proper steps have been taken to insure that such procedures will not cause flammable or toxic vapors from substances inside. They can cause an explosion even though they have been “cleaned”. For information, purchase “Recommended Safe Practices for the Preparation for Welding and Cutting of Containers and Piping That Have Held Hazardous Substances”, AWS F4.1 from the American Welding Society (see address above).

6.e. Vent hollow castings or containers before heating, cutting or welding. They may explode.

6.f. Sparks and spatter are thrown from the welding arc. Wear oil free protective garments such as leather gloves, heavy shirt, cuffless trousers, high shoes and a cap over your hair. Wear ear plugs when welding out of position or in confined places. Always wear safety glasses with side shields when in a welding area.

6.g. Connect the work cable to the work as close to the welding area as practical. Work cables connected to the building framework or other locations away from the welding area increase the possibility of the welding current passing through lifting chains, crane cables or other alternate circuits. This can create fire hazards or overheat lifting chains or cables until they fail.

6.h. Also see item 1.c.

6.I. Read and follow NFPA 51B “ Standard for Fire Prevention During Welding, Cutting and Other Hot Work”, available from NFPA, 1 Batterymarch Park,PO box 9101, Quincy, Ma 022690-9101.

CYLINDER may explode if damaged.

7.a. Use only compressed gas cylinders

containing the correct shielding gas for the process used and properly operating regulators designed for the gas and

pressure used. All hoses, fittings, etc. should be suitable for the application and maintained in good condition.

7.b. Always keep cylinders in an upright position securely chained to an undercarriage or fixed support.

7.c. Cylinders should be located:

Away from areas where they may be struck or subjected to physical damage.

A safe distance from arc welding or cutting operations and any other source of heat, sparks, or flame.

7.d. Never allow the electrode, electrode holder or any other electrically “hot” parts to touch a cylinder.

7.e. Keep your head and face away from the cylinder valve outlet when opening the cylinder valve.

7.f. Valve protection caps should always be in place and hand tight except when the cylinder is in use or connected for use.

7.g. Read and follow the instructions on compressed gas cylinders, associated equipment, and CGA publication P-l, “Precautions for Safe Handling of Compressed Gases in Cylinders,” available from the Compressed Gas Association 1235 Jefferson Davis Highway, Arlington, VA 22202.

FOR ELECTRICALLY powered equipment.

8.a. Turn off input power using the disconnect switch at the fuse box before working on the equipment.

8.b. Install equipment in accordance with the U.S. National Electrical Code, all local codes and the manufacturer’s recommendations.

8.c. Ground the equipment in accordance with the U.S. National Electrical Code and the manufacturer’s recommendations.

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6.j. Do not use a welding power source for pipe thawing.

Jan ‘07

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Contents Semiautomatic Wire Feeder Safety California Proposition 65 WarningsFumes and Gases Electric Shock can killCan be dangerous Cylinder may explode if damaged Welding and Cutting Sparks can Cause fire or explosionIii Précautions DE Sûreté Sûreté Pour Soudage a L’ArcMaster Table of Contents for ALL Sections Table of Contents Installation SectionInstallation Technical Specifications LN-25Wire Feed Speed CurrentrentSafety Precautions Power Source ConnectionINVERTEC, CV300 and Other Newer Lincoln Power Sources GUN Cable Connection to FeederWith CV Adapter For GMA GUN and CablesWire Feed Drive Roll and Guide Tube Kits Weld Cable ConnectionElectrode Cable Connection Work Cable ConnectionLN-25 Operation Section Welding Capability OperationRead and Understand Entire Section Before Operating Machine Electrode Polarity Switch Wire Feed Mode SwitchWire Speed Dial and Range Switch LN-25 Instruments ControlsGAS Post PRE-FLOW Timers Optional Work Clip LeadAWG Remote ARC Voltage Control OptionalSequence of Operation Loading ElectrodeMounting 22 to 30 LB READI-REELCOILS Mounting 10 to 30 LB SpoolsLoading Wire Drive Idle Roll Pressure SettingGrooves READI-REEL Inside Cage Wires 6OPERATIONB-6Presetting Wire Feed Speed Setting Constant Wire Feed Speed CV ModeSetting ARC Sensing Wire Feed Speed CC Mode Minimum Arc VoltsFigure B.4 VV CC Wire Speed Setting Making a WeldWelding Procedure AT END of CoilCylinder may explode if damaged Overvoltage Shutdown Circuit Protection and Automatic ShutdownMotor Overload Shutdown Accessories Section Accessories Section CAccessories LN-25 Option ChartHow to use Table C.1 Table C.1K434-1 GAS Flow Timer KIT Optional AccessoriesGAS Solenoid KIT K430-2 for Codes K433 Power Source Remote BOX K432 Remote Control Cable AssemblyRemote Output Control Options and Control Cable Assemblies LN-25 Contactor KIT K443-1 for CodesK439 Remote Extension Cable Assembly K625, K626, K627 Remote Control Cable AssemblyK624-1 42V Remote Output Control Module K444, K444-1 or K444-2 Remote Voltage Control KITConnector Must be Insulated in this Area To GUN Switch Connect Leads to Pins a and CStyle a DIA. HoleMaintenance Section Routine Maintenance MaintenanceAdjusting Speed Sensor Module Calibration of LN-25 Wire Speed Dial LN-25 Figure E.1 Theory of Operation Block Diagram Theory of Operation SectionInput Power Circuit Theory of OperationGeneral Description Control Circuit OperationFeedback and Control Circuits Trigger CircuitOptional Circuits ContactorGAS Solenoid Later ModelsProtective Devices Circuits Control PC Board FusesLN-25 Troubleshooting and Repair Section 2TROUBLESHOOTING and REPAIRF-2 HOW to USE Troubleshooting GuideTroubleshooting and Repair PC Board Troubleshooting ProceduresFeeding Problems Feeding Problems Hall Effect GAS Solenoid Valve and Solenoid PC Board Test Test DescriptionMaterials Needed For Codes below 10500 onlyTest Procedure Screw Wire Reel Retaining CollarCase Door GAS Solenoid ValveFigure F.2 Solenoid Leads Troubleshooting and Repair GAS Solenoid Valve and Solenoid PC Board Test 512624A 621 J11 PC Board for K430 GAS Solenoid KITLN-25 GAS Solenoid Valve and Control PC Board Test For Codes Above 10500 onlyFor Codes Above 10500 only Figure F.5 Control BOX Cover RemovalSolenoid Leads Figure F.6. Solenoid LeadsFigure F.7. Applied Voltage Polarity Control PC Board Solenoid Circuitry TestG3425 667 555 691 621 500 512 690LN-25 Hall Effect Module Test G2196 539 541 500 Hall Effect Module Test539 G1757 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 Test Procedure Contactor & Contactor PC Board TestS20963 Contactor Coil LeadsContactor PC Board Test 28TROUBLESHOOTING and Repair F-28667 J14 LN-25 Contactor PC Board Replacement Tools RequiredContactor PC Board Replacement Repair Procedure33TROUBLESHOOTING and Repair F-33 Figure F.17 Control PC Board Replacement Control PC Board Replacement Figure F.21. Control PC Board Codes 9812 and belowFigure F.22. Plug Locations for L12253- Control Board J14Figure F.24. Control Board Replacement PC Board Screw Contactor Replacement For Codes below40TROUBLESHOOTING and Repair F-40 Contactor ReplacementFor Codes Above Figure F.26 Phillips Head Screwdriver Wrench Pliers Present Replacement Purge Switch Leads Solenoid Plug J11GAS 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 48TROUBLESHOOTING and Repair F-48 Drive Motor and Gearbox Replacement and Access toHall Effect Module Mylar Insulation Electrode CableG1757 Figure F.34. Drive Motor Replacement Retest After Repair LN-25 Electrical Diagrams Table of Contents Electrical Diagrams SectionWiring Diagram Above Code 11140 G4679 Optional 42 Volt Remote Output ControlWiring Diagram Code 10556 Thru 10500 L10925 Wiring Diagram Code 10100 Thru 10500 L9644 Wiring Diagram below Code 9900 L7545 Schematic Complete Machine Codes Above 11140 G5366 LN-25 Across the ARC ModelSchematic 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 PC Board Assembly Control Abovr Code 11140 L12253-3L12253-3 PC Board Assembly Control Code 10556 Thru 10558 G3425-3 G3425PC Board Assembly Control Code 10100 Thru 10500 G2196-1 PC Board Assembly Control below Code 9900 G1757-6 LN-25 ControlSchematic Contactor PC BD Above Code 10500 M10965 ContactorSchematic Contactor PC BD Code 10100 Thru 10500 M17621 Electrical Diagrams Electrical Diagrams PC Board Assembly Contactor Above Code 10500 L10863-1 L10863PC Board Assembly Contactor Code 10100 Thru 10500 L9670-1 PC Board Assembly Contactor below Code 9900 L9185-2