Manuals / Lincoln Electric / Power Tools / Welding System

Lincoln Electric SVM162-B service manual Return to Section TOC

Models: SVM162-B

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PRECISION TIG 275

A-10

NOTES

A-10

Image 16

Lincoln Electric SVM162-B service manual Return to Section TOC

Contents

Safety Depends on You Precision TIGSafety Powered equipmentFor Engine Mar ʻ95Fumes and Gases ARC Rays can burnAug ʻ06 Cylinder may explode If damaged Welding Sparks canIii Précautions DE Sûreté Précautions DE Sûreté PourLES Machines À Souder À Transformateur ET ÀMaster Table of Contents for ALL Sections Table of Contents Installation Section Installation Unbalance 70% Penetration AC TIG 16.1 255 60% 29.0 225Unbalance 70% Penetration AC TIG 15.4 200 100% 28.0 Unbalance 70% Penetration AC TIG 14.8 150Output Current Maximum OpenProtection Safety PrecautionsSelect Suitable Location Turn the input power OFF at Disconnect switch or fuse boxBefore working on this equip MentWork Cable Connection Figure A.2 Auxiliary Power Connections Figure A.3Robotic Interface Connection Figure A.4Return to Section TOC Table of Contents Operation Section Product Description OperationPipe Thawing Recommended Processes EquipmentControls and Settings When the Power Source is onStick mode the Electrode circuits Both the Stick and TIG torch cablesAC Balance Ontrol Maximum Output Control The large knobMenu Button and Display Switch Codes TIG Mode MenuOperation for Codes Above 11000 only SelectAdvanced Panel Controls Gure B.3Time Control PULSE% on Pulse Frequency ControlPulse Background Current Control TIG Welding Features Internal SET UP ControlsStick Welding Features Step Trigger Modes Figure B.4 TIG Weld Cycle Chart Codes below 11000 K1829-1Setup Guidelines for TIG Welding With AN Amptrol Figure B.6Making a TIG Weld with AN Amptrol Recommended Electrode Amperage Ranges Precision TIGSmaw Process Gtaw ProcessTable of Contents Optional Equipment Accessories for Codes belowMagnum PTA and PTW Series Torches Accessories for Codes Above Return to Section TOC Maintenance Component Location and AccessSafety Precautions Overload ProtectionSpark GAP Adjustment Service ProceduresUNDER-COOLER Service Warni Table of Contents Theory of Operation Section Theory of Operation Input Power CircuitGeneral Description Control board also monitors the thermostats Output RectificationSee SCR Operation High VOLTAGE/HIGH Frequency Circuit Figure E.4 High Voltage / High Frequency CircuitDC Welding Output Figure E.5 DC Welding OutputAC Welding Output Figure E.7 AC Welding OutputSCR Operation Figure E.9 SCR Operation8THEORY of OPERATIONE-8 Protection CircuitsFAN-AS-NEEDED F.A.N Thermal ProtectionTable of Contents Troubleshooting & Repair Section 2TROUBLESHOOTING & REPAIRF-2 HOW to USE Troubleshooting GuideTroubleshooting & Repair Troubleshooting Guide ProcedureReconnect TestTransformer Control BoardSCR Bridge Test Installed, remove it and replace Machine functions normallyPerform the Protection Board T1 TransformerProtection Board See Note belowPerform the T1 Transformer Perform the SCR Bridge Test Perform the SCR Bridge Tests Est Perform the Gas Solenoid TestElectric Shock MaintenanceCan Kill Maintenance Section High frequency transformerProblems Possible Areas Symptoms Misadjustments Course of ActionSee the Maintenance Secti To Technical SpecificationsStick Welding Problems Stick electrode blasts-off Welding current may be too highFunction Problems Installation Manual Be plugged into J3Display switch may be faulty Precision TIG 19TROUBLESHOOTING & REPAIRF-19 Meter Calibration AdjustmentsVoltmeter/Ohmmeter Nut Driver Wiring Diagram DescriptionMeter Calibration Adjustments 20TROUBLESHOOTING & REPAIRF-20Calibration Check Ammeter Calibration Procedure 21TROUBLESHOOTING & REPAIRF-21Control board. See Figure F1 Return to Section TOC High Frequency Circuit Disable Procedure 23TROUBLESHOOTING & REPAIRF-23Nut Driver Electrical Insulating Tape High Frequency Circuit Disable Procedure 24TROUBLESHOOTING & REPAIRF-24Procedure Protection Board Test 25TROUBLESHOOTING & REPAIRF-25Test Description Protection Board Test Resistance Between Reading27TROUBLESHOOTING & REPAIRF-27 T1 Main Transformer TestTest Procedures 28TROUBLESHOOTING & REPAIRF-28T1 Main Transformer Test Test Points Acceptable Voltages Primary WindingsReturn to Section TOC 31TROUBLESHOOTING & REPAIRF-31 GAS Water Solenoid TestTest Procedure Disable ProcedureGAS Water Solenoid Test Perform the High Frequency Circuit33TROUBLESHOOTING & REPAIRF-33 Static SCR Test34TROUBLESHOOTING & REPAIRF-34 Removal and ReplacementAssembly. See SCR Bridge Assembly Static SCR TestService and repair Active SCR Test36TROUBLESHOOTING & REPAIRF-36 Active SCR TestActive SCR Test Figure F.9 SCR Gate Locations 39TROUBLESHOOTING & REPAIRF-39 DC TIG ModeScope Settings Typical Output Voltage Waveform Machine Loaded to 2 Amps40TROUBLESHOOTING & REPAIRF-40 AC TIG ModeMilliseconds in time. The machine Was loaded with a resistance grid bank41TROUBLESHOOTING & REPAIRF-41 Typical AC Voltage Waveform Machine Loaded to 50 AmpsThis is the typical DC + output voltage Horizontal Sweep Ms/DivTypical AC Voltage Waveform Machine Loaded to 2 Amps 42TROUBLESHOOTING & REPAIRF-42AC Balance Control in Auto Output Control AT Minimum 43TROUBLESHOOTING & REPAIRF-43 Return to Section TOC High Voltage Transformer Removal and Replacement 45TROUBLESHOOTING & REPAIRF-45Nut Driver Phillips Head Screwdriver Off-set Wire Cutters 46TROUBLESHOOTING & REPAIRF-46 Removal and ReplacementRemoval Procedure Replacement Procedure47TROUBLESHOOTING & REPAIRF-47 Figure F.11 3/8 Screw & Leads S and F LocationsReturn to Section TOC Control Board Removal and Replacement 49TROUBLESHOOTING & REPAIRF-49Nut Driver Phillips Head Screwdriver Wire Cutters 50TROUBLESHOOTING & REPAIRF-50 Control Board Removal and Replacement51TROUBLESHOOTING & REPAIRF-51 J10 J11 J12Return to Section TOC SCR Bridge Assembly Removal and Replacement 53TROUBLESHOOTING & REPAIRF-53Nut Driver Pliers Crimp Wire Cutters SCR Bridge Assembly Removal and Replacement 54TROUBLESHOOTING & REPAIRF-54See Figure F.14 SCR Bridge Removal and Replacement Diode Stud Foot Inch Size Pounds Mounting of Stud Type Diodes to Aluminum Heat Sinks CONT’D25-27 300-324 10±.5 125+0/-5 22-25 57TROUBLESHOOTING & REPAIRF-57 Polarity Switch Removal and Replacement58TROUBLESHOOTING & REPAIRF-58 Polarity Switch Removal and Replacement59TROUBLESHOOTING & REPAIRF-59 SCR Removal and ReplacementSCR Removal and Replacement 60TROUBLESHOOTING & REPAIRF-60Special Instructions Retest After Repair Input Idle AmpsOpen Circuit Voltages Recommended Meters for Machine Output TestsReturn to Section TOC Electrical Diagrams Section Section G Control P.C. Board SchematicElectrical Diagrams Wiring Diagram Entire Machine Code 10806 G4031Wiring Diagram Entire Machine Code 10807 G4031-1 SCR2Precision TIG 275 Wiring Diagram Wiring Diagram Entire Machine Code 10893 G4031-2Precision TIG 275 Wiring Diagram Wiring Diagram Entire Machine Code 11158 G5692Schéma DE Câblage Diagramas DE Cableado Wiring Diagram Entire Machine Code 11159 G5692-1 Robotic Interface Connection Connexion Interface RobotiqueSchematic Entire Machine below Code 11000 G4075 Return to SectionSchematic Entire Machine Above Code 11000 G5691 Change Detail Released from X A.02Schematic Control PC Board below Code 11000 G3908 Electrical Diagrams Electrical Diagrams PC Board ASSEMBLY-CONTROL below Code 11000 G3909-2 G3909Schematic Control PC Board Above Code 11000 G4762 Electrical Diagrams Electrical Diagrams Electrical Diagrams Electrical Diagrams PC Board ASSEMBLY-CONTROL Above Code 11000 G4763-1 G4763SCHEMATIC-PROTECTION P.C. Board M16115 16115 MPC Board ASSEMBLY-PROTECTION M16062-1 Reqd IdentificationSCHEMATIC-BYPASS / Stabilizer P.C. Board S22530-1 Code 10806 PC Board ASSEMBLY-BYPASS / Stabilizer L10121-1 Code 10806 L10121-1SCHEMATIC-BYPASS and CE P. C. Board S24206 Code Frame GroundPC Board ASSEMBLY-BYPASS and CE L10882-1 Code Bottom ViewSchematic TIG Option P.C. Board below Code 11000 G4039 Electrical Diagrams Return to Section TOC To Section TOC Schematic TIG Option P.C. Board Above Code 11000 G4760 Electrical Diagrams Electrical Diagrams MAK E Detail SVM Error Reporting Form