Manuals / Lincoln Electric / Power Tools / Welding System

Lincoln Electric SVM161-A service manual Safety Precautions, Routine Maintenance

Models: SVM161-A

1 112

Download 112 pages 28.2 Kb

Page 32

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

D-2	MAINTENANCE	D-2

SAFETY PRECAUTIONS

WARNING

ELECTRIC SHOCK can kill.

•Have an electrician install and service this equipment.

•Turn the input power off at the fuse box, disconnect 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.

------------------------------------------------------------------------

INPUT FILTER CAPACITOR

DISCHARGE PROCEDURE

The machine has internal capacitors which are charged to a high voltage during power-on condi- tions. This voltage is dangerous and must be dis- charged before the machine can be serviced. Discharging is done automatically by the machine each time the power is switched off. However, you must allow the machine to sit for at least 5 minutes to allow time for the process to take place.

------------------------------------------------------------------------

ROUTINE MAINTENANCE

Prevent metal powder from accumulating near the aer- ation fins and over them.

Carry out the following periodic controls on the power source:

•Clean the power source inside by means of low- pressure compressed air.

•Check the electric connections and all the connec- tion cables.

•Always use gloves in compliance with the safety standards.

INVERTEC® V205-T AC/DC™

Image 32

Lincoln Electric SVM161-A Safety Precautions, Input Filter Capacitor Discharge Procedure, Routine Maintenance

Contents

Invertec V205-T AC/DC Safety Invertec V205-T AC/DC Electric Shock can kill ARC Rays can burn Can be dangerous Powered equipment Welding CuttingCylinder may explode Sparks can cause fire or If damaged Explosion Précautions DE Sûreté Sûreté Pour Soudage a L’Arc Safety Methods of Reducing Emissions Mains Supply Master Table of Contents for ALL Sections Table of Contents Installation Section Installation Operating Temperature Range Storage Temperature Range Select Suitable Location StackingTilting Environmental Area Reconnect Procedure Input Connections Attachment Plug Installation 230V Input115V Input Engine Driven Generator Work Cable Connection Output ConnectionsOutput and GAS Connection for TIG Welding Figure A.1 Remote Control Connection Shielding GAS Connection Invertec V205-T AC/DC Table of Contents Operation Section Safety Instructions OperationGeneral Description Welding Capability OPERATIONB-3 Rear Control Panel Figure B.1 Controls and Settings Figure B.2 Step Diagram Local/Remote push button Selects the welding TIG DC TIG AC SET UP Menu Indicator Parameter Default Output Limitations Welding Polarity Figure B.7 Steel TIG Welding Copper TIG WeldingTips for AC TIG Welding Filler Material AC TIG Welding Quick Start UP Protective GAS DC TIG Welding Quick Start UP Table of Contents Accessories Section Accessories Optional AccessoriesCompatible Equipment Cable Plugs Table of Contents Maintenance Section Maintenance Safety PrecautionsInput Filter Capacitor Discharge Procedure Routine Maintenance 3MAINTENANCE Figure D.1 Major Component Locations Invertec V205-T AC/DC 1TABLE of CONTENTS-THEORY of Operation Section E-1 Theory of Operation Input Board and BUS Board Main Igbt Inverter Board Figure E.3 Main Igbt Inverter Board Main Transformer Output Module Transistor BoardOutput Module and Clamping Board Superimposition Board Output Filter Board CONTROL/DISPLAY BoardHigh Frequency HF Board Insulated Gate Bipolar Transistor Igbt Operation Passive Active 1TABLE of Contents Troubleshooting and Repair F-1 Troubleshooting and Repair HOW to USE Troubleshooting Guide PC Board Troubleshooting Procedures Electric Shock can kill Igbt Perform the Input Filter Board Igbt Inverter Board Test Secondary Output Board Assembly Test See the Output Filter Troubleshooting and Repair External Diagnostics Display Troubleshooting and Repair Internal Diagnostics Figure F.2 Internal Diagnostics LED Invertec V205-T AC/DC Test Description Materials Needed Input Filter Capacitor Discharge Procedure Capacitor Solder Resistor Pads Input Filter Board Test Input Filter Board ProcedureInput Filter Board Test 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 Location Main Igbt Inverter Board LOW Voltage Test LED TP2 MF2 Figure F.7 Main Igbt Inverter Board Location CONTROL/DISPLAY Board Test CONTROL/DISPLAY Board Test Figure F.8 CONTROL/DISPLAY Board Location CN2 Figure F.9 CONTROL/DISPLAY Board Location CN1 Figure F.10 Plugs CN1, CN2 & CN7 BUS Board Test BUS Board Test Figure F.11 BUS Board Location Table 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 Points CN1 CN2 Main Inverter Board Power Factor Section Test Table F.11 Resistance Checks Main Inverter Board Power Factor Section TestTable F.10 Voltage Checks with 115 VAC Applied to Machine TP9 Gndpwr RL1 Invertec V205-T AC/DC Output Filter Board Test Output Filter Board Test Figure F.16 Output Filter Board Location Figure F.17 Output Filter Board Plug Location Figure F.18 Output Filter Board Plug CN1 Invertec V205-T AC/DC Secondary Output Board Assembly Test Secondary Output Board Assembly Test Figure F.19 Secondary Power Board Location OFF GA-SA Mode Positive Meter Negative Meter Expected Reading Probe Table F.14 Output Diode Resistance Check Main Inverter Board Welding Logic and Inverter Section Test Main Inverter Board Welding Logic and Inverter Section Test Table 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 Machine Figure 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 Location RV1 RV2 Invertec V205-T AC/DC Main Igbt Board Removal and Replacement Main Igbt Board Removal and Replacement Figure F.27 Main Igbt Board Location RV1 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 Location CN2 Invertec V205-T AC/DC Output Filter Board Removal and Replacement Removal and Replacement Figure F.32 Output Filter Board Location Phillips Head Screws CN1 Output Diodes Removal and Replacement Output Diodes Removal and Replacement To Replace ANY of the Output Diodes D1, D2, D3 or D4 Output Transistor Removal and Replacement Output Transistor Removal and Replacement Figure F.36 Output Transistor Location Plug CN1 5mm Allen Bolts Invertec V205-T AC/DC Table of Contents Diagram Section ELECTriCaL DiaGramS