Lincoln Electric SVM136-A service manual Reconnect Procedure Output Connections

Page 12

TOC

TOC

A-6

A-6

 

 

INSTALLATION

 

RECONNECT PROCEDURE

OUTPUT CONNECTIONS

Multiple input voltage welders are shipped from the fac- tory connected for the highest voltage listed on the machine's rating plate. Before installing the welder, be sure the reconnect panel is connected for the proper voltage.

Failure to follow these instructions can cause immedi- ate failure of components in the welder.

To reconnect a multiple voltage machine to a different voltage, remove input power and change the position of the jumper links on the reconnect panel. Follow the input connection diagram, located on the inside access panel cover, appropriate for your machine's input volt- age. This same connection diagram is shown in Figure A.4 below.

CONNECT ELECTRODE AND WORK LEADS TO OUTPUT TERMINALS

The output (welding) cables are connected to the out- put terminals marked "+" and "-" . These 1/2" terminals are located at the lower right and lower left corners of the front panel. See Figure A.5.

See Table A.1 for recommended cable sizes for com- bined lengths of electrode and work cables.

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FIGURE A.4

INPUT CONNECTION DIAGRAM FOR 230/460 VOLTS AC, 50/60 HZ

 

 

 

 

 

DUAL VOLTAGE MACHINE

 

 

Do not operate with covers

Do not touch electrically live parts

INPUT SUPPLY CONNECTION DIAGRAM

 

 

removed

 

 

IMPORTANT: CHANGE LINK POSITIONS AND PILOT TRANSFORMER CONNECTIONS.

 

 

Disconnect input power before Only qualified persons should install,

 

 

NOTE: MACHINES ARE SHIPPED FROM FACTORY CONNECTED FOR OVER 300 VOLTS

 

 

servicing

 

use or service this equipment

 

 

 

CONNECTION FOR HIGHEST RATING PLATE VOLTAGE, 50 OR 60 HZ.

LINK

 

 

 

 

1. TURN OFF THE INPUT POWER USING THE DISCONNECT SWITCH AT THE FUSE BOX.

 

 

L3

W CR1

 

2. DISCONNECT AND INSULATE THE H2 LEAD TERMINAL WITH TAPE TO PROVIDE AT

LINES

 

 

 

LEAST 600 VOLT INSULATION.

L2

V

 

3. CONNECT L1, L2 & L3 INPUT SUPPLY LINES AND H3 TRANSFORMER LEADS

INPUT

 

CONTACTOR

 

 

{L1

U

 

TO THE INPUT SIDE OF THE CR1 CONTACTOR AS SHOWN.

 

 

4. CONNECT TERMINAL MARKED TO GROUND PER LOCAL AND NATIONAL ELECTRIC

 

 

GND

H1

H2

CODES.

 

 

 

H3

5. MOUNT THE LINKS IN THE POSITIONS SHOWN WITH THE PROVIDED HEX NUTS.

 

 

 

PILOT

 

DOUBLE UP THE LINKS IN TWO OF THE POSITIONS TO SAVE THEM FOR FUTURE

 

 

 

TRANSF.

 

USE. SECURE THE REMAINING HEX NUTS IN PLACE.

 

 

 

CONNECTION FOR LOWEST RATING PLATE VOLTAGE, 50 OR 60 HZ.

LINK

 

 

 

 

1. TURN OFF THE INPUT POWER USING THE DISCONNECT SWITCH AT THE FUSE BOX.

LINES

L3

W CR1

 

2. DISCONNECT AND INSULATE THE H3 LEAD TERMINAL WITH TAPE TO PROVIDE AT

L2

V

 

LEAST 600 VOLT INSULATION.

INPUT

 

3. CONNECT L1, L2 & L3 INPUT SUPPLY LINES AND H2 TRANSFORMER LEADS

CONTACTOR

 

 

{L1

U

 

TO THE INPUT SIDE OF THE CR1 CONTACTOR AS SHOWN.

 

 

GND

H1

 

4. CONNECT TERMINAL MARKED TO GROUND PER LOCAL AND NATIONAL ELECTRIC

 

 

H2

H3

CODES.

 

 

 

 

 

 

 

PILOT

 

5. MOUNT THE LINKS IN THE POSITIONS SHOWN WITH THE PROVIDED HEX NUTS.

 

 

 

TRANSF.

 

 

THE LINCOLN ELECTRIC CO., CLEVELAND OHIO U.S.A.

IDEALARC CV-400

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Page 11 Page 13
Contents Idealarc CV-400 Safety California Proposition 65 WarningsElectric Shock can kill Cylinder may explode if damaged Précautions DE Sûreté Sûreté Pour Soudage a L’ArcMaster Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical Specifications Idealarc CV-400Safety Precautions Location and VentilationLifting Ground Connection Input Supply ConnectionsInput Wire and Fuse Size Return toReconnect Procedure Output Connections Connect Electrode and Work Leads to Output TerminalsFigure A.5 Output Terminal Connections Connect Wire Feeders Table of Contents Operation Section Safety Instructions OperationOperating Instructions Operational Features and Controls Design FeaturesGeneral Description Recommended ProcessesWelding Capability LimitationsControls and Settings Figure B.1 Case Front ControlsRemote Control Welding OperationLocal Control Auxiliary Power Overload ProtectionIdealarc CV-400 Table of Contents Accessories OPTIONS/ACCESSORIES Factory Installed OptionsField Installed Options Automatic Wire Feeders Connecting the NA-3 to the Idealarc CV-400Connecting the NA-5 to the Idealarc CV-400 FeederterminalAccessories Semiautomatic Wire Feeders Connecting the LN-7 to the Idealarc CV-400 Terminal StripConnecting the LN-8 or LN-9 to the Idealarc CV-400 Idealarc CV-400 Table of Contents Maintenance Safety Precautions Routine and Periodic Maintenance Return to Return to Section TOCFigure D.1 Idealarc CV-400 Table of Contents Theory of Operation Section Theory of Operation Input Line VOLTAGE, Contactor and Main TransformerOutput CONTROL, Rectification and Feedback Protective Devices Circuits Figure E.4 CV-400 Trigger and Thermal Light CircuitSCR Operation Figure E.5 SCR OperationIdealarc CV-400 Table of Contents Troubleshooting & Repair Section Troubleshooting & Repair HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures Electric Shock can killTroubleshooting Guide Output ProblemsOutput Problems SCR/Diode Perform the SCR/Diode Bridge SCR/Diode Rectifier Bridge Test Welding Problems Control Transformer T2 Voltage Test DescriptionMaterials Needed Test Procedure Control Transformer T2 Voltage TestRight Side View Input Contactor Test Input Contactor Test Test for Contact Continuity Figure F.4 Input Contactor Test ConnectionsMain Transformer T1 Voltage Test Main Transformer T1 Voltage Test Figure F.6 Main Secondary Lead Test Points Blank Main Transformer T1 Voltage Test Static SCR/DIODE Rectifier Bridge Test Static SCR/DIODE Rectifier Bridge Test SCR Anode Remove ANY Insulating Paint Cathode SCR Active SCR Test Active SCR Test Figure F.15 Heat Sink Test Points Figure F.16 SCR Tester Circuit and SCR Connections Maximum Output Setting no Load Normal Open Circuit Voltage WaveformTypical Output Voltage Waveform Machine Loaded Maximum Output Setting no Load Typical SCR Gate Voltage WaveformAbnormal Output Voltage Waveform Machine Loaded ONE Output SCR not FunctioningInput Contactor CR1 CLEANING/REPLACEMENT DescriptionCleaning Procedure Contactor Replacement ProcedureFAN Motor and Blade Removal and Replacement FAN Motor and Blade Removal and Replacement ProcedureSCR/DIODE Rectifier Assembly Removal and Replacement SCR/DIODE Rectifier Assembly Removal and ReplacementSCR Removal and Replacement SCR Removal and Replacement Procedure for the 1/2 Inch Wide Spring Figure F.21 1/2 Wide Leaf SpringClamping Procedure For 1/4-28 CAP Screws Clamping Procedure For 1/4-20 CAP ScrewsProcedure for Inch Wide SpringAfter Replacing the SCRs Mounting of Stud Type Diodes To Aluminum Heat Sinks Mounting of Stud Type Diodes To Aluminum Heat SinksMain Transformer Removal and Replacement Main Transformer Removal & Replacement Removal of Lift BailRemoval of Choke and TOP Iron Assembly Figure F.26 Choke RemovalReassembly of Transformer Coils Figure F.27 Epoxy MIX Application AreasFigure F.28 Coil Lead Placement Figure F.30 Primary Thermostat Location Reassembling the Main Transformer Into the Machine Reassemble the Lift BailRetest After Repair Input Idle Amps and WattsOpen Circuit Voltages Welding Output Load TestIdealarc CV-400 Electrical Diagrams Section GWiring Diagram Codes 10084, 10085 Wiring Diagram Code Control PC Board G2629-1 Layout Control PC Board G2629-1 Schematic Snubber Snubber PC Board M15370-3 Schematic Idealarc CV-400
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