Lincoln Electric SVM144-B service manual Safety

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SAFETY

 

 

 

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WARNING

CALIFORNIA PROPOSITION 65 WARNINGS

Diesel engine exhaust and some of its constituents

 

The engine exhaust from this product contains

are known to the State of California to cause can-

 

chemicals known to the State of California to cause

cer, birth defects, and other reproductive harm.

 

cancer, birth defects, or other reproductive harm.

 

 

 

The Above For Diesel Engines

 

The Above For Gasoline Engines

ARC WELDING CAN BE HAZARDOUS. PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH. KEEP CHILDREN AWAY. PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING.

Read and understand the following safety highlights. For additional safety information, it is strongly recommended that you purchase a copy of “Safety in Welding & Cutting - ANSI Standard Z49.1” from the American Welding Society, P.O. Box 351040, Miami, Florida 33135 or CSA Standard W117.2-1974. A Free copy of “Arc Welding Safety” booklet E205 is available from the Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199.

BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR PROCEDURES ARE PERFORMED ONLY BY QUALIFIED INDIVIDUALS.

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FOR ENGINE powered equipment.

1.a. Turn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running.

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1.b. Operate engines in open, well-ventilated areas or vent the engine exhaust fumes

outdoors.

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1.c. Do not add the fuel near an open flame weld- ing arc or when the engine is running. Stop the engine and allow it to cool before refuel- ing to prevent spilled fuel from vaporizing on contact with hot engine parts and igniting. Do not spill fuel when filling tank. If fuel is spilled, wipe it up and do not start engine until fumes

have been eliminated.

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1.d. Keep all equipment safety guards, covers and devices in posi- tion and in good repair.Keep hands, hair, clothing and tools away from V-belts, gears, fans and all other moving parts when starting, operating or repairing equipment.

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1.e. In some cases it may be necessary to remove safety guards to perform required maintenance. Remove guards only when necessary and replace them when the maintenance requiring their removal is complete. Always use the greatest care when working near moving parts.

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1.f. Do not put your hands near the engine fan. Do not attempt to override the governor or idler by pushing on the throttle control rods

while the engine is running.

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1.g. To prevent accidentally starting gasoline engines while turning the engine or welding generator during maintenance work, disconnect the spark plug wires, distributor cap or magneto wire as appropriate.

1.h. To avoid scalding, do not remove the radiator pressure cap when the engine is hot.

ELECTRIC AND MAGNETIC FIELDS may be dangerous

2.a. Electric current flowing through any conductor causes localized Electric and Magnetic Fields (EMF). Welding current creates EMF fields around welding cables and welding machines

2.b. EMF fields may interfere with some pacemakers, and welders having a pacemaker should consult their physician before welding.

2.c. Exposure to EMF fields in welding may have other health effects which are now not known.

2.d. All welders should use the following procedures in order to minimize exposure to EMF fields from the welding circuit:

2.d.1. Route the electrode and work cables together - Secure them with tape when possible.

2.d.2. Never coil the electrode lead around your body.

2.d.3. Do not place your body between the electrode and work cables. If the electrode cable is on your right side, the work cable should also be on your right side.

2.d.4. Connect the work cable to the workpiece as close as possible to the area being welded.

2.d.5. Do not work next to welding power source.

Mar ‘95

LN-15

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Contents Power MIG Safety Electric Shock can kill Safety Welding Sparks can cause fire or explosionPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcMaster Table of Contents for ALL Sections Table of Contents Installation SectionInstallation Technical Specifications Power MIGLocation Safety PrecautionsUncrating the Power MIG Power MIG Figure A.2 Triple Voltage Machine Input Connections GUN and Cable Installation Shielding GASOperation Section Section BOPERATIONB-2 Fumes and Gases can be dangerousWelding Capability OperationProduct Description LimitationsDescription of Controls Procedure for Changing Drive and Idle Roll Sets Wire Reel Loading READI-REELS, SPOOLS, or CoilsIdle Roll Pressure Setting Feeding Wire ElectrodeSetting RUN-IN Speed on STAN- Dard Power MIG Feeder To Start the WelderAvoiding Wire Feeding Problems Making a WeldFAN Control Input Line Voltage ProtectionAccessories Section Section CK363P READI-REEL Adapter AccessoriesDrive Roll Kits Dual Cylinder Mounting KIT K1702-1Operating Instructions For Timer KIT Making a Weld with the Spool GUN, Spool GUN Installed Spool GUN Adapter KITMaintenance Section Section DGUN Tubes and Nozzles MaintenanceRoutine and Periodic Maintenance Figure D.1 Component Locations Contact TIP and GAS Nozzle Installation Liner Removal Replacement5MAINTENANCED-5 To open up the handleTable D.2 Description English Size Metric SizeTheory of Operation Section Section EMain Transformer Theory of OperationInput Line Voltage Output Rectification Feedback ControlConstant Voltage Output Figure E.4 Constant Voltage OutputWire Drive Motor FeedbackOvercurrent Protection Wire Feed Overload ProtectionThermal and Overload Protection SCR Operation Figure E.6 SCR OperationPower MIG Troubleshooting & Repair Section Section FTroubleshooting & Repair HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures WorkstationsOutput Problems SCR Rectifier Rectifier Function Problems Wire Feeding Problems Welding Problems Welding Problems Main Transformer Test Test DescriptionTest Procedure Main Transformer TestFigure F.1 Troubleshooting and Repair Materials Needed Rectifier Diode Bridge TestTest Description Rectifier Diode Bridge Testing 208R 206 28 VAC 209R Power MIG Static SCR Rectifier Assembly Test Static SCR Rectifier Assembly Test Active SCR Rectifier Assembly Test Power MIG Active SCR Rectifier Assembly Test Active SCR Rectifier Assembly Test Figure F.7 Location Leads X2 Open switch SW-1 Wire Drive Motor and Tachometer Feedback Test Wire Drive Motor and Tachometer Feedback Test Test for Supply Voltage to Tachometer 515B 206B 15 VDC 5J1 1J1Test for Feedback Voltage to Control Board 555 206B To 3.5 VDC 6J1 1J1Normal Open Circuit Voltage Waveform VoltsMachine 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 Power MIG Control PC Board Removal and Replacement Procedure DescriptionRemoval and Replacement Procedure Control PC BoardFigure F.11 Control Board Mounting Power MIG 41TROUBLESHOOTING & REPAIRF-41 Wire Drive Assembly Removal and Replacement ProcedureWire Drive Assembly Removal and Replacement ProcedureTOC Power MIG SCR Output Rectifier Removal and Replacement Procedure SCR Output Rectifier Removal and Replacement Figure F.15 Right Heat Sink Lead Disconnection Power MIG Capacitor Bank Removal and Replacement Procedure Capacitor Bank Removal and Replacement Troubleshooting & Repair Removal and Replacement Main Transformer and Output ChokeTOC Power MIG FAN Motor Assembly Removal and Replacement Procedure FAN Motor Assembly Removal and Replacement Retest After Repair Troubleshooting and RepairWire Speed Range Open Circuit VoltagePower MIG Electrical Diagrams Section Power MIG 255 208/230V Wiring Diagram Entire Machine Code 10563 L10979Power MIG 255 230/460/575V Wiring Diagram Entire Machine Code 10583 L10980Power MIG 255 230/460/575 Wiring Diagram Entire Machine Code 10986 L11980Power MIG 255 208/230 Wiring Diagram Entire Machine Code 10990 L11979Control PC Board Schematic G3520-1D1 Control PC Board Assembly G3521-1 3521Display PC Board Schematic L10951 PowermigDisplay PC Board Assembly L10952-1 Lincoln Electric COSnubber PC Board Schematic S24374 24374 SSnubber PC Board Assembly M19248-1 00 ~.04SVM Error Reporting Form