Lincoln Electric SVM128-A service manual Installation, Technical Specifications SA-250

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A-2

A-2

INSTALLATION

TECHNICAL SPECIFICATIONS - SA-250

 

 

 

 

 

 

INPUT - DIESEL ENGINE

 

 

Manufacturer

 

Description

 

Speed

Displacement

Ignition

Capacities

Perkins

 

3 cyl., 4 cycle

 

1725 RPM

152 cu. in.

Electric

Fuel: 15 gal.

D3.152

 

Water-cooled

 

Full load

(2500 cc)

 

(57 liters)

 

 

diesel

 

 

 

 

 

 

 

38.2 HP @

 

1800 RPM

 

 

Oil: 7.2 qt.

 

 

1725 RPM

 

High idle

 

 

(6.9 liters)

 

 

 

 

 

 

1350 RPM

 

 

Water/coolant: 10 qt.

 

 

 

 

 

 

Low idle

 

 

(9.5 liters)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RATED OUTPUT - WELDER

 

 

Duty Cycle

 

 

Amps

Volts at Rated Amperes

100% Duty Cycle

 

 

200 DC Constant Current

 

40V

60% Duty Cycle

 

 

250 DC Constant Current

 

40V(1)

35% Duty Cycle

 

 

325 DC Constant Current

 

33V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTPUT - WELDER AND GENERATOR

 

Welding Ranges

Max. Open Circuit Voltage

Auxiliary Power

40-325 Amps DC

 

98.5

3.0 kVA of 115/230 V, 60Hz Power

 

 

 

 

 

 

 

 

26 Amps @ 115 V(2)

 

 

 

 

 

 

 

 

13 Amps @ 230 V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PHYSICAL DIMENSIONS

 

 

Height

 

 

 

 

Width

Depth

 

Weight

43.1 in.

 

 

 

 

28 in.

67 in.

 

1650 lb.

1096 mm

 

 

 

 

711 mm

1702 mm

 

742.5 kg

 

 

 

 

 

 

 

 

 

 

1Lincoln rating. Nema rating at 60% duty cycle is 250 amps @ 30 V.

215 amps can be drawn from either half of the receptacle. Total combined load of all receptacles cannot exceed 3.0 kVA.

SA-250

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Contents SHIELD-ARCTMSA-250 Safety SA-250Electric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcMaster Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical Specifications SA-250Storing Safety PrecautionsLocation and Ventilation PRE-OPERATION Engine Service Cooling System MufflerExhaust Spark Arrester TrailerElectrical Output Connections Welding Cable ConnectionsCircuit Breakers Auxiliary Power RECEPTACLES, PLUGS, and HAND-HELD EquipmentMachine Grounding SA-250 Table of Contents Operation Section Safety Instructions OperationOperating Instructions General DescriptionOperational Features and Controls Design FeaturesRecommended Applications WelderWelding Capability LimitationsControls and Settings WELDER/GENERATOR ControlsControl of Welding Current Current Range SelectorDiesel Engine Controls Figure B.3 Diesel Engine ControlsEngine Operation Before Starting the EngineStarting the Engine Check and fill the engine fuel tankBREAK-IN Period Stopping the EngineCold Weather Starting Welding Operation After you finish weldingTable B.1 Range Settings for Wire SIZE/SPEED Auxiliary Power 12B-12Table of Contents Accessories OPTIONS/ACCESSORIES TIG Welding Accessories Semiautomatic Welding AccessoriesConnection of Lincoln Electric Wire Feeders Connection of the LN-7 toPIN Amphenol Connection of the LN-25 to Unused Lead IndividuallyFigure C.4 SA-250/LN-25 Across the ARC Connection Diagram Control K487-25 Table of Contents Maintenance Routine and Periodic Maintenance Engine MaintenanceFigure D.1 OIL Drain and Refill Eliminate Air from the Fuel System HOW to Eliminate AIR from the Fuel System Self-vent method Figure D.4 Eliminating AIR from the Fuel SystemFigure D.5 Engine Coolant Drain Plug Figure D.6 Tightening the FAN Belt Daily or Before Starting EngineFirst 25-50 Hours EveryBattery Maintenance Cleaning the BatteryWELDER/GENERATOR Maintenance Idler Maintenance Figure D.5 Major Component Locations SA-250 Table of Contents Theory of Operation Section Circuits Theory of OperationALTERNATOR, and Protection Excitation Flashing Auxiliary and Field Feedback CoilsEngine Idler Circuit Interpole and Series Coils Fine Current AdjustmentCurrent Range Selector DC Generator Machines Mechanical CouplingSA-250 Table of Contents Troubleshooting & Repair Section Troubleshooting & Repair HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures PC Board can be damaged by static electricityDetailed in the beginning of this manual Troubleshooting GuideObserve Safety Guidelines Shunt Field Winding Test Field Shunt Winding Test Output Problems Function Problems Function Problems Troubleshooting & Repair Problems Possible Areas Symptoms Misadjustments Course of ActionWelding Problems Materials Needed Alternator Rotor TestTest Description Test Procedure Slip Rings BrushesFigure F.2 Measuring Rotor Resistance Figure F.3 Measuring Rotor Resistance to Ground Field Shunt Winding Test Field Shunt Winding Test PIN TAB Idler Solenoid Test Idler Solenoid Test Engine Throttle Adjustment Test Engine Throttle Adjustment Test Strobe Tach MethodFrequency Counter Method Oscilloscope MethodAdjusting Screw Locking NUT Flashing the Fields DescriptionProcedure Do not remove brush holderHigh Idle no Load Fine Current Control Rheostat AT Maximum Scope SettingsNormal Open Circuit Voltage Waveform 115VAC Supply Normal Open Circuit DC Weld Voltage Waveform Machine Loaded Selector Switch AT Maximum Position Typical DC Weld Output Voltage WaveformAlternator Rotor Removal Replacement Replacement Alternator Rotor RemovalLoosen Screws Alternator Cover Slip Rings Brushes Figure F.13 Rotor Removal Replacement Alternator Stator Removal and Replacement Procedure Alternator Stator RemovalField Bridge Rectifier VAC Receptacle Circuit Breaker Genernator Brush HOLDER/COIL Cables Figure F.18 Drill Spot Locations Generator Frame Removal and Replacement Generator Frame Removal See Figure F.19 for steps 4Figure F.20 Wire and Selector Switch Connections Figure F.21 Case Front Removal Rope Sling ENGINE/GENERATOR Mounting Holes Troubleshooting & Repair Generator Armature Removal and Replacement Generator Armature Removal Figure F.23 Blower Paddle RemovalAC Auxiliary Power Receptacle Output Retest After RepairEngine Output Welder DC OutputSA-250 Electrical Diagrams Section Section G SA-250 Electrical Diagrams Wiring DiagramWire Feed Module Wiring Diagram Idler PC Board M13708 Schematic Idler PC Board M13708 Components SVM Error Reporting Form

SVM128-A specifications

The Lincoln Electric SVM128-A is a cutting-edge welding machine designed to meet the demands of both professional welders and DIY enthusiasts. This versatile welding power source brings together advanced technology and robust design, making it a reliable choice for various welding applications.

One of the standout features of the SVM128-A is its capability to perform multiple welding processes. It supports MIG, TIG, and stick welding, allowing users to tackle a wide range of projects with ease. This multi-functionality makes it ideal for professionals working in different industries, as well as for hobbyists who enjoy diverse welding tasks.

The SVM128-A is equipped with inverter technology, which enhances its performance by providing a more stable arc and improved energy efficiency. This technological advancement contributes to lower operational costs and allows for a more consistent weld quality across different materials and thicknesses. Additionally, the inverter technology enables the machine to be lightweight and portable, making it convenient for jobs that require mobility.

Another prominent characteristic of the SVM128-A is its user-friendly interface. The machine features intuitive controls and a digital display that allows operators to easily set the desired welding parameters. This simplified setup helps reduce the learning curve for new users while also offering precise control for experienced professionals.

The Lincoln Electric SVM128-A is designed with durability in mind. Its robust construction ensures that it can withstand the rigors of frequent use in demanding environments. The machine is also equipped with various safety features, including thermal overload protection and a duty cycle rating that prevents overheating, ultimately extending its lifespan.

For optimal performance, the SVM128-A provides adjustable output options, allowing users to customize the welding parameters based on their specific needs. This flexibility makes it suitable for welding various metals, including steel, aluminum, and stainless steel.

In summary, the Lincoln Electric SVM128-A combines versatility, advanced technology, and a user-friendly design. With its capability to perform multiple welding processes, lightweight construction, and durable features, it stands out as an excellent option for anyone looking to achieve high-quality welds. Whether for professional or personal use, the SVM128-A is poised to deliver reliable performance and exceptional results.