Lincoln Electric SVM 113-A Recommended Applications, Operational Features and Controls

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B-3

 

B-3

 

OPERATION

 

 

RECOMMENDED APPLICATIONS

• 4500 watts of continuous 115/230 volt,

single-

 

 

phase AC auxiliary power (3500 watts CSA).

 

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WELDER

The WELDANPOWER 125 provides excellent constant current DC welding output for stick (SMAW) welding and DC TIG welding using the “scratch” starting tech- nique. THE K903 TIG Module can be added as an option to provide high frequency starting. For more details on using the machine as a welder, see WELD- ING OPERATION in the Operation section of this manual.

GENERATOR

The WELDANPOWER 125 gives smooth AC generator output for medium use, non-commercial demands. For more details on operating the generator, see GEN- ERATOR OPERATION in the Operation section of this manual.

OPERATIONAL FEATURES AND CONTROLS

The WELDANPOWER 125 was designed for simplicity. Therefore, it has very few operating controls. A single dial on the control panel lets you select either welder or generator use. For welding, the same dial selects continuous current output over the machine’s 50 to 125 amp range.

The 9 HP Briggs & Stratton gasoline engine controls include a recoil starter, choke, throttle control, and stop switch. See ENGINE OPERATION in the Operation section of this manual for details about starting, stopping, and breaking in the gasoline engine.

DESIGN FEATURES AND

ADVANTAGES

•DC Stick welding (SMAW) process capability with output range from 50 - 125 amps.

•Single-dial current output selection.

•Work and Electrode welding cable mounting termi- nals.

•Separate ground stud for safe connection of case to earth ground. Single 20 amp, 230 volt generator receptacle.

•Duplex 20 amp, 115 volt generator receptacle.

•Integrated generator output overload protection through two 20 amp circuit breakers.

•Welded-tube, full roll cage frame protects engine and generator/welder.

•Lightweight, portable design.

•Briggs & Stratton 9 HP Vanguard® overhead valve, air-cooled gasoline engine.

•Rubber mounting isolates engine and generator from frame to prevent machine “walking” during use.

•Hour meter standard.

•Automatic shutdown for low oil condition.

WELDING CAPABILITY

The WELDANPOWER 125 is rated 125 amps, 25 volts DC at 30% duty cycle on a ten-minute basis. This means that you can load the welder to 125 amps for three minutes out of every ten-minute period. The machine is capable of higher duty cycles at lower out- put currents. For example, you can load the welder to 100 amps for six minutes out of ten for a 60% duty cycle.

The current is continuously variable from 50 to 125 amps DC. The WELDANPOWER 125 can, therefore, weld with all 3/32 and most 1/8 inch diameter Lincoln DC electrodes as well as do DC TIG welding.

LIMITATIONS

•The WELDANPOWER 125 is not recommended for any processes besides those that are normally per- formed using stick welding (SMAW) procedures or TIG welding.

•The WELDANPOWER 125 is not recommended for pipe thawing.

•During welding, generator power is limited to 100 watts, and output voltages can drop from 120 to 80 volts and 240 to 160 volts. Therefore, DO NOT OPERATE ANY SENSITIVE ELECTRICAL EQUIP- MENT WHILE YOU ARE WELDING.

WELDANPOWER 125

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Contents Weldanpowertm California Proposition 65 Warnings SafetyElectric Shock can kill Cylinder may explode if damaged Précautions DE Sûreté Master Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications Weldanpower InstallationStoring Safety PrecautionsLocation and Ventilation PRE-OPERATION Engine Service Welding Cable Connections Electrical Output ConnectionsPlugs and HAND-HELD Equipment Auxiliary Power ReceptaclesMachine Grounding Circuit Breakers Premises WiringThese Devices Without Table of Contents Operation Section Operation Safety InstructionsOperating Instructions General DescriptionDesign Features Advantages Operational Features and ControlsRecommended Applications Welding CapabilityWELDER/GENERATOR Controls Controls and SettingsFigure B.2 Gasoline Engine Controls Gasoline Engine ControlsStarting the Engine Engine OperationBefore Starting the Engine For Best Engine Starting Stopping the EngineBREAK-IN Period Welding OperationGeneral Information LOW OIL SensingTIG Welding To USE the Weldanpower 125 for WELD- INGTable B.2 Electrode Selection Guide To USE the Weldanpower 125 AS AN Auxiliary Power Supply Auxiliary PowerTable B.3 Generator Power Applications Table of Contents Accessories Briggs and Stratton Accessories OPTIONS/ACCESSORIESLincoln Electric Accessories Table of Contents Maintenance Engine Maintenance Routine and Periodic MaintenanceMaintanence Figure D.3 Clean Finger GuardFigure D.5 SET Spark Plug GAP Table D.2 Engine Maintenance Parts WELDER/GENERATOR MaintenanceFigure D.6 Major Component Locations Table of Contents Theory of Operation Section Idler Board ENGINE, EXCITATION, Rotor and StatorAuxiliary Power Overcurrent Protection Rotor Field Feedback Auxiliary Power Engine Idle ControlFigure E.4 Weld WINDING, Output Rectifier and Choke Weld WINDING, Output Rectifier and ChokeTable of Contents Trouble Shooting & Repair Section HOW to USE Troubleshooting Guide Troubleshooting & RepairElectric Shock can kill PC Board Troubleshooting ProceduresOutput Problems Troubleshooting GuideOutput Rectifier Troubleshooting & Repair Perform the Engine Throttle Engine Problems Main Stator Winding Test Engine Throttle Adjustment Troubleshooting & Repair Weldanpower Materials Needed Rotor Voltage TestTest Description Rotor Voltage Test Test ProcedureRotor Resistance Test Rotor Resistance Test Figure F.3 Brushes Retained with Cable TIE Output Rectifier Bridge Test Output Rectifier Bridge Test Main Stator Test Main Stator Test Figure F.6 Main Stator Molex Plug Test Points Rotor Flashing Circuit Test Rotor Flashing Circuit Test WP125 Idler Engine Throttle Adjustment Test Test Procedure Figure F.12 Idle Speed Adjustment Screw Locations Figure F.13 LOW Idle Adjustment NUT on Idler Solenoid TOC High Idle no Load Output Control AT Maximum Scope SettingsNormal Open Circuit Weld Voltage Waveform Normal Open Circuit Voltage Waveform 115 VAC Supply Machine Loaded to 125 Amps AT 25 VAC Typical Weld Output WaveformMachine Loaded Abnormal Open Circuit Weld Voltage Waveform Description Brush Removal and ReplacementFigure F.14 Brushes Retained with Cable TIE ProcedureProcedure Rheostat Removal and Replacement Rheostat Removal and Replacement Field Capacitor Removal and Replacement Field Capacitor Removal and Replacement Field Diode Bridge Removal and Replacement Field Diode Bridge Removal and Replacement Figure F.18 Field Diode Bridge Location Idler Printed Circuit Board Removal Replacement Carefully remove the board Output Rectifier Bridge Removal Replacement Output Rectifier Bridge Removal and Replacement Troubleshooting & Repair Output Choke Removal and Replacement Output Choke Removal and Replacement Section TOC Instructions STATOR/ROTOR Removal and ReplacementStator Removal Procedure Troubleshooting & Repair Reassembly Procedure Rotor Removal ProcedureFigure F.24 Checking ROTOR-STATOR AIR GAP Feeler Gauge Troubleshooting & Repair Retest After Repair Auxiliary Power Receptacle OUTPUT1Engine Output WELDER/GENERATOR OUTPUT1Weldanpower Table of Contents Diagrams Section Wiring Diagram Code 10158 Idler PC Board M17578 DiagramsSchematic Dimension Print Weldanpower Weldanpower M17578-1 M17578 Idler PC BoardDescription M17578 Idler PC Board Bill of MaterialsWeldanpower
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