Lincoln Electric SVM161-A service manual Welding Cutting, Cylinder may explode, For Electrically

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iii

 

 

 

 

SAFETY

 

 

 

iii

 

 

 

 

 

 

 

 

 

 

WELDING

and

CUTTING

CYLINDER may explode

 

SPARKS can cause fire or

if damaged.

 

 

 

 

explosion.

 

 

7.a. Use only

compressed

gas

cylinders

 

 

 

 

 

 

 

6.a. Remove fire hazards from the welding area.If

containing the correct shielding gas for the

 

process used and

properly

operating

 

this is not possible, cover them to prevent the welding sparks

 

regulators

designed

for

the

gas and

 

from starting a fire. Remember that welding sparks and hot

 

pressure used. All hoses, fittings, etc. should be suitable for

 

materials from welding can easily go through small cracks

 

the application and maintained in good condition.

 

 

and openings to adjacent areas. Avoid welding near hydraulic

 

 

 

 

 

 

 

 

lines. Have a fire extinguisher readily available.

7.b. Always keep cylinders in an upright position securely

 

 

 

 

 

 

6.b. Where compressed gases are to be used at the job site,

chained to an undercarriage or fixed support.

 

 

 

 

 

 

 

special precautions should be used to prevent hazardous

7.c. Cylinders should be located:

 

 

 

 

 

situations. Refer to “Safety in Welding and Cutting” (ANSI

 

 

 

 

 

• Away from areas where they may be struck or subjected to

 

Standard Z49.1)

and the

operating

information for the

 

physical damage.

 

 

 

 

 

equipment being used.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6.c. When not welding, make certain no part of the electrode

• A safe distance from arc welding or cutting operations and

any other source of heat, sparks, or flame.

 

 

 

circuit is touching the work or ground. Accidental contact can

 

 

 

 

 

 

 

 

 

cause overheating and create a fire hazard.

7.d. Never allow the electrode, electrode holder or any other

 

 

 

 

 

 

6.d. Do not heat, cut or weld tanks, drums or containers until the

electrically “hot” parts to touch a cylinder.

 

 

 

 

 

 

 

 

proper steps have been taken to insure that such procedures

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

 

will not cause flammable or toxic vapors from substances

 

when opening the cylinder valve.

 

 

 

 

inside. They can cause an explosion even though they have

 

 

 

 

 

 

 

 

 

 

been “cleaned”. For information, purchase “Recommended

7.f. Valve protection caps should always be in place and hand

 

Safe Practices for the Preparation for Welding and Cutting of

 

tight except when the cylinder is in use or connected for

 

Containers and

Piping

That

Have

Held Hazardous

 

use.

 

 

 

 

 

Substances”, AWS F4.1 from the American Welding Society

 

 

 

 

 

 

 

 

 

 

 

(see address above).

 

 

 

7.g. Read and follow the instructions on compressed gas

 

 

 

 

 

 

cylinders, associated equipment, and CGA publication P-l,

6.e. Vent hollow castings or containers before heating, cutting or

“Precautions for Safe Handling of Compressed Gases in

 

welding. They may explode.

 

 

 

Cylinders,” available from the Compressed Gas Association

 

 

 

 

 

 

1235 Jefferson Davis Highway, Arlington, VA 22202.

6.f.

Sparks and spatter are thrown from the welding arc. Wear oil

 

 

 

 

 

 

free protective garments such as leather gloves, heavy shirt,

FOR ELECTRICALLY

 

cuffless trousers, high shoes and a cap over your hair. Wear

 

ear plugs when welding out of position or in confined places.

 

powered equipment.

 

Always wear safety glasses with side shields when in a

 

welding area.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8.a. Turn off input power using the disconnect

6.g. Connect the work cable to the work as close to the welding

switch at the fuse box before working on

 

area as practical. Work cables connected to the building

the equipment.

 

 

 

 

framework or other locations away from the welding area

 

 

 

 

 

 

increase the possibility of the welding current passing through

8.b. Install equipment in accordance with the U.S. National

 

lifting chains, crane cables or other alternate circuits. This can

Electrical Code, all local codes and the manufacturer’s

 

create fire hazards or overheat lifting chains or cables until

recommendations.

 

 

 

 

 

they fail.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8.c. Ground the equipment in accordance with the U.S. National

6.h. Also see item 1.c.

 

 

 

 

Electrical Code and the manufacturer’s recommendations.

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.

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

Refer to http://www.lincolnelectric.com/safety for additional safety information.

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