Lincoln Electric SVM161-A service manual DC TIG Welding Quick Start UP

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B-12

OPERATION

B-12

 

DC TIG WELDING QUICK START UP

WARNING

ELECTRIC SHOCK can kill.

Have an electrician install and service this equipment.

Turn the input power off at the fuse box, dis- connect or unplug supply lines and allow machine to sit for five minutes minimum to allow the power capacitors to discharge before working inside this equipment.

Do not touch electrically hot parts.

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Connect up the shielding gas – typically argon – using an appropriate regulator. Connect foot amptrol, torch and work lead to power source.

With the Work cable connected to a properly grounded work piece, turn the power source on.

To change to DC TIG Welding:

Press Mode button to select "DC TIG."

Press Trigger Mode button and set to 2-step.

Press Local / Remote Mode button and set for Remote.

Pulsing parameters selected by Parameter button, and changed using Output Control.

Set the maximum output current desired using the

Output Control.

Initiate the arc by closing the Foot Amptrol’s arc start switch. The Amptrol will control the output current from 10 amps to current level set by output control.

To change the Post Flow time, repeatedly push the Parameter button until the Post Flow indicator light is on. Adjust the Output control to the desired Post Flow time as indicated on digital display.

To change from High Frequency to Lift Start, turn power source off. Press and hold the Parameter button while the power source is turned on. A “0” in the center of the digital display indicates the Set Up Menu is now active. Rotate the Output Control until # 8 is displayed. Press the Parameter button again and rotate the Output Control until “1” is displayed. Press the Parameter button to accept this setting. Rotate the Output Control until “0” is displayed. Press the para- meter button to exit the Set Up Menu.

INVERTEC® V205-T AC/DC™

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Contents Invertec V205-T AC/DC Safety Invertec V205-T AC/DCElectric Shock can kill ARC Rays can burn Can be dangerousPowered equipment Welding CuttingCylinder may explode Sparks can cause fire or If damaged ExplosionPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcSafety Methods of Reducing Emissions Mains Supply Master Table of Contents for ALL Sections Table of Contents Installation Section Installation Operating Temperature Range Storage Temperature RangeSelect Suitable Location StackingTilting Environmental AreaReconnect Procedure Input ConnectionsAttachment Plug Installation 230V Input115V Input Engine Driven GeneratorOutput and GAS Connection for TIG Welding Figure A.1 Output ConnectionsWork Cable Connection Remote Control Connection Shielding GAS ConnectionInvertec V205-T AC/DC Table of Contents Operation Section Safety Instructions OperationGeneral Description Welding CapabilityOPERATIONB-3 Rear Control Panel Figure B.1Controls and Settings Figure B.2Step Diagram Local/Remote push button Selects the weldingTIG DC TIG AC SET UP Menu Indicator Parameter DefaultOutput Limitations Welding PolarityFigure B.7 Steel TIG Welding Copper TIG WeldingTips for AC TIG Welding Filler MaterialAC TIG Welding Quick Start UP Protective GASDC TIG Welding Quick Start UP Table of Contents Accessories Section Accessories Optional AccessoriesCompatible Equipment Cable PlugsTable of Contents Maintenance Section Maintenance Safety PrecautionsInput Filter Capacitor Discharge Procedure Routine Maintenance3MAINTENANCE Figure D.1 Major Component LocationsInvertec V205-T AC/DC 1TABLE of CONTENTS-THEORY of Operation Section E-1 Theory of Operation Input Board and BUS BoardMain Igbt Inverter Board Figure E.3 Main Igbt Inverter BoardMain Transformer Output Module Transistor BoardOutput Module and Clamping Board Superimposition BoardHigh Frequency HF Board CONTROL/DISPLAY BoardOutput Filter Board Insulated Gate Bipolar Transistor Igbt Operation Passive Active1TABLE of Contents Troubleshooting and Repair F-1 Troubleshooting and Repair HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures Electric Shock can killIgbt Perform the Input Filter Board Igbt Inverter Board Test Secondary Output Board Assembly Test See the Output Filter Troubleshooting and Repair External Diagnostics DisplayTroubleshooting and Repair Internal Diagnostics Figure F.2Internal Diagnostics LEDInvertec V205-T AC/DC Test Description Materials NeededInput Filter Capacitor Discharge Procedure Capacitor Solder Resistor PadsInput Filter Board Test Input Filter Board Test ProcedureInput Filter Board Input Filter Board Invertec V205-T AC/DC Main Igbt Inverter Board LOW Voltage Test Main Igbt Inverter Board LOW Voltage Test Figure F.6 Main Igbt Inverter Board LocationMain Igbt Inverter Board LOW Voltage Test LEDTP2 MF2 Figure F.7 Main Igbt Inverter Board LocationCONTROL/DISPLAY Board Test CONTROL/DISPLAY Board Test Figure F.8 CONTROL/DISPLAY Board LocationCN2 Figure F.9 CONTROL/DISPLAY Board LocationCN1 Figure F.10 Plugs CN1, CN2 & CN7BUS Board Test BUS Board Test Figure F.11 BUS Board LocationTable F.5 Plug CN2 Test Points Table F.6 Plug CN3 Test PointsTable F.7 Plug CN4 Test Points Table F.8 Plug CN7 Test PointsCN1 CN2 Main Inverter Board Power Factor Section Test Table F.10 Voltage Checks with 115 VAC Applied to Machine Main Inverter Board Power Factor Section TestTable F.11 Resistance Checks TP9 Gndpwr RL1 Invertec V205-T AC/DC Output Filter Board Test Output Filter Board Test Figure F.16 Output Filter Board LocationFigure F.17 Output Filter Board Plug Location Figure F.18 Output Filter Board Plug CN1Invertec V205-T AC/DC Secondary Output Board Assembly Test Secondary Output Board Assembly Test Figure F.19 Secondary Power Board LocationOFF GA-SA Mode Positive Meter Negative Meter Expected Reading Probe Table F.14 Output Diode Resistance CheckMain Inverter Board Welding Logic and Inverter Section Test Main Inverter Board Welding Logic and Inverter Section TestTable F.16 Feedback Voltage Signals Table F.18 LED Check in Stick ModeTable F.15 LED Function Table F.17 Voltage Checks with 115 VAC Applied to MachineFigure F.22 Main Board Inverter Section TP9 Ground Power Invertec V205-T AC/DC Input Filter Board Removal and Replacement Input Filter Board Removal and Replacement Figure F.24 Input Filter Board LocationRV1 RV2 Invertec V205-T AC/DC Main Igbt Board Removal and Replacement Main Igbt Board Removal and Replacement Figure F.27 Main Igbt Board LocationRV1 RV2 CN4 RV3 RV4 CN5 RV5 RV7 RV6 Invertec V205-T AC/DC CONTROL/DISPLAY Board Removal and Replacement CONTROL/DISPLAY Board Removal and Replacement Figure F.29 CONTROL/DISPLAY Board LocationCN2 Invertec V205-T AC/DC Output Filter Board Removal and Replacement Removal and Replacement Figure F.32 Output Filter Board LocationPhillips Head Screws CN1 Output Diodes Removal and Replacement Output Diodes Removal and Replacement To Replace ANY of the Output Diodes D1, D2, D3 or D4Output Transistor Removal and Replacement Output Transistor Removal and Replacement Figure F.36 Output Transistor LocationPlug CN1 5mm Allen Bolts Invertec V205-T AC/DC Table of Contents Diagram Section ELECTriCaL DiaGramS