Lincoln Electric SVM 119-A Reconnect Procedure, Figure A.4 Input Gas Supply Connections

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A-5

INSTALLATION

A-5

 

 

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7.Attach the flow regulator to the cylinder valve and tighten the union nut(s) securely with a wrench.

a.NOTE: If connecting the flow regulator to 100% CO2 cylinder, insert the regulator adapter between the regulator and cylinder valve. If adapter is equipped with a plastic washer, be sure it is seated properly to con- nect to the CO2 cylinder.

8.Connect one end of the inlet gas hose to the outlet fitting of the flow regulator.

9.Connect the other end of the inlet gas hose to the WIRE-MATIC 255 rear fitting.

10.Tighten both the union nuts securely with a wrench.

11.Before opening the cylinder valve, turn the regula- tor adjusting knob counter-clockwise until the pres- sure is released from the adjusting spring.

12.Open the cylinder valve slowly a fraction of a turn.

a.When the cylinder pressure gage pointer stops moving, open the valve fully.

NEVER STAND DIRECTLY IN FRONT OF OR BEHIND THE FLOW REGULATOR WHEN OPENING THE CYLINDER VALVE. ALWAYS STAND TO ONE SIDE.

13.The flow regulator is adjustable. Adjust the flow regulator for the flow rate recommended for the procedure and process being used before making the weld.

FIGURE A.4 - Input Gas Supply Connections

RECONNECT PROCEDURE

Multiple voltage machines are shipped connected to the highest input voltage listed on the machine's rating plate. Before installing the machine, check that the Reconnect Panel in the Input Box Assembly is con- nected for the proper voltage.

CAUTION

Failure to follow these instructions can cause immediate failure of components within the machine.

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To reconnect a dual or triple voltage machine to a dif- ferent voltage, change the position of the leads or links on the Reconnect Panel based on the type of machine. Follow The Input Supply Connection Diagram located on the inside of the Case Back Reconnect Panel Access Door.

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For 208/230/1/60 machine(s), see Figure A.5.

For 230/460/575/1/60 machine(s), see Figure A.6.

WIRE-MATIC 255

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Contents WIRE-MATIC Safety Depends on YouARC Rays can burn SafetyElectric Shock can kill Fumes and Gases can be dangerousCylinder may explode if damaged Welding Sparks can cause fire or explosionIii Electric and MAG- Netic FieldsMay be dangerous Précautions DE Sûreté Sûreté Pour Soudage a L’ArcWIRE-MATIC Table of Contents Table of Contents Installation Table of Contents Installation SectionTechnical Specifications Wire-Matic-255 Input Connections Safety Precautions Select Proper Location StackingFuse and Wire Sizes Connect Shielding GAS Reconnect Procedure Figure A.4 Input Gas Supply ConnectionsFigure A.5 Reconnect Diagram For 208/230/1/60 Machines Connect Output Components ConnectionsWire Size Conversion Parts GUN and Cable InstallationWIRE-MATIC Table of Contents Operation Section OperationWELDING, Cutting Safety InstructionsGeneral Description Design Features Advantages Recommended Processes and EquipmentDuty Cycle Amps Volts Machine CapabilityLimitations Controls and Settings Figure B.1 Operator ControlsUsing the Wire Drive Roll Figure B.2 Wire Reel LoadingFeeding Electrode Setting Idle Roll Pressure Operating StepsMaking a Weld WIRE-MATIC Accessories Table of Contents Accessories SectionK672-1 Spool GUN Adapter KIT OPTIONS/ACCESSORIESMagnum GUN Connection KIT Optional K466-6 Making a Weld with the Spool GUN Adapter K672-1 Installed Timer KIT K585-1 Timer KIT Installation Optional K585-1K468 8 Spool Adapter Drive Roll Kits64 1.2mm Aluminum Feeding KIT K673-1 K363P READI-REEL AdapterDual Cylinder Mounting KIT K671-1 Maintenance Table of Contents Maintenance SectionRoutine and Periodic Maintenance Perform the following dailyMaintenance Drive Rolls and Guide Tubes Cable CleaningContact TIP and GAS Nozzle Installation GUN Tubes and NozzlesLiner Removal Replacement Figure D.2 Liner maintenanceGUN Handle Disassembly To open up the handleDescription English Size Metric Size WIRE-MATIC Table of Contents Theory of Operation Section Theory of OperationInput Line Voltage and Main TransformerOutput Rectification Feedback ControlConstant Voltage Output Figure E.4 Constant Voltage OutputWire Drive Motor FeedbackThermal Protection SCR Operation Figure E.6 SCR OperationWIRE-MATIC Troubleshooting & Repair Table of Contents Troubleshooting & Repair SectionHOW to USE Troubleshooting Guide Recommended Course of ActionBoard can be dam- aged by static electricity PC Board Troubleshooting ProceduresElectric Shock can kill Main Transformer Rectifier Assembly Test To Section TOC SCR Rectifier Perform the Wire Drive Motor Liquid elec Trolyte in these capacitors isPerform the Output Rectifier Materials Needed Main Transformer TestTest Description Main Transformer Test Test Procedure ON/OFF Power Switch will be hot during these testsLead Plug Location Static SCR Rectifier Assembly Test Leads Figure F.4 SCR 1 Test Points Active SCR Rectifier Assembly Test Leads Figure F.7 SCR Tester Circuit SCR connectionsWire Drive Motor and Tachometer Feedback Test Wire Drive Motor and Tachometer Feedback Test Test Procedure Test for Supply Voltage to Tachometer Test for Feedback Voltage to the Control BoardScope Settings Normal Open Circuit Voltage WaveformMachine Loaded to 250 Amps AT 26 VDC Scope Settings Typical Output Voltage Waveform Machine LoadedMachine Loaded to 220 Amps AT 22 VDC Scope Settings Troubleshooting & Repair Typical SCR Gate Voltage Waveform Control PC Board Removal and Replacement Removal and Replacement ProcedureRemoval and REPLACE- Ment Procedure Wire Drive Assembly Removal and Replacement Procedure Figure F.11 Wire Drive Assembly RemovalSCR Output Rectifier Removal & Replacement Right side heat sink See Figure F.14 Disconnection Heat Sink LeadCapacitor Bank Removal and Replacement Bank Removal Replacement ComponentsMain Transformer Removal and Replacement Power Switch FAN Motor and FAN Removal and Replacement FAN Motor and FAN Removal and Replacement Procedure Figure F.16 Fan Motor and Fan Removal ComponentsTroubleshooting & Repair Input Volts/Hertz Wire Speed RangeOpen Circuit Voltage 230/60 375WIRE-MATIC Table of Contents Electrical Diagrams Section WIRE-MATIC Electrical Diagrams Wiring Diagram 208/230 CodeWire Matic 255 230 / 460 Wiring Diagram 230/460/575 CodeControl PC Board G2803 Schematic Wirematic 255 Control Control PC Board G2803 Layout