Lincoln Electric 250 GXT manual Symptoms, Cause Recommended Course of Action

Page 28

E-2

TROUbLESHOOTING

E-2

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

PRObLEMS

(SYMPTOMS)

POSSIbLE

CAUSE

RECOMMENDED

COURSE OF ACTION

No welder output power or Auxiliary

1.

Open in miscellaneous leads.

Power.

 

 

 

2.

Open lead in flashing or field

 

 

circuit.

 

3.

Faulty rotor.

 

4.

Faulty Potentiometer (R1).

 

5.

Faulty stator Field winding.

 

6.

Faulty Field rectifier (On PCB*).

 

7.

Faulty P.C. Board.

 

 

 

Engine will not idle down to low

1.

Idler switch on High Idle.

speed.

 

 

 

2.

Insufficient voltage present on

 

 

idler solenoid terminals.

 

 

(Voltage should be 12V to 14V

 

 

DC).

 

3.

External load on welder or

 

 

auxiliary power.

 

4.

Faulty wiring in solenoid circuit.

 

5.

Faulty idler solenoid.

 

6.

Faulty P.C. Board.

 

 

 

Engine will not go to high idle when

1.

Poor work lead connection to

attempting to weld.

 

work.

 

2.

No voltage signal from the

 

 

current sensor.

 

3.

No open circuit voltage on

 

 

output studs.

 

4.

Faulty P.C. Board.

 

 

 

 

 

 

If all recommended possible areas of misadjustment have been checked and the problem persists, Contact your local Lincoln Authorized Field Service Facility.

* Printed Circuit Board (PCB)

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

RANGER® 250 GXT

Image 28
Contents Safety Depends on You Ranger 250 GXTSafety California Proposition 65 WarningsElectric Shock can kill Welding and Cutting Sparks can Cause fire or explosion IiiIvSAFETY Précautions DE SûretéThank You TAbLE of Contents Installation Safety Precautions Machine GroundingSpark Arrester TowingPRE-OPERATION Service GasolineVehicle Mounting FuelAdditional Safety Precaution Angle of OperationLifting High Altitude OperationConnection of Lincoln Electric Wire Feeders Additional Safety PrecautionsInstructions Location / VentilationAuxiliary Power Welder OperationDevices Without Addi Tional Resistive Type Loads Simultaneous Welding and Power Auxiliary Power While WeldingSTANDbY Power Connections Connection of Ranger 250 GXT to Premises Wiring Engine Switch OperationGENERAL DESCRIPTION Welder Controls Function and OperationPolarity Switch PIN ConnectorLocal / Remote Control Switch Ranger 250 GXT Approximate Fuel ConsumptionStarting the Engine STARTING/SHUTDOWN InstructionsStopping the Engine Wire Feed Welding Processes Constant Voltage Welding ProcessStick Constant Current Welding TIG Constant Current WeldingSummary of Welding Processes Control Electrode Idle When not To Start Process Used Mode WeldingCAbLE K1745-1 Welding GAS Cylinder LPG Tank Holder AccessoriesK857 25 ft.7.5m or K857-1100 ft.30.4m WIRE FEED RECOMMENDED EQUIPMENTStick TIGMaintenance Safety PrecautionsRoutine Maintenance Engine OIL ChangeAIR Cleaner and Other Maintenance OIL Filter ChangeEngine Adjustments Engine Maintenance PartsSlip Rings HardwareTROUbLESHOOTING Symptoms Cause Recommended Course of ActionTROUbLESHOOTING Diagrams Diagrams Diagrams Dimension PrintRanger GXTPrecaucion Warnung

250 GXT specifications

The Lincoln Electric 250 GXT is a powerful and versatile welder designed to meet the needs of professionals and hobbyists alike. With its durable construction and advanced technology, this machine excels in a variety of welding applications, making it a popular choice for those looking to perform stick and TIG welding efficiently.

One of the standout features of the Lincoln Electric 250 GXT is its robust performance. It operates on a reliable 240-volt power source, providing ample power to handle a wide array of welding jobs. The machine has an impressive output range, delivering a maximum welding output of 250 amps, which allows for welding materials from thin sheets to heavy-duty steel components. This versatility makes it ideal for use in both industrial settings and home workshops.

The 250 GXT incorporates Lincoln Electric’s advanced Arc Control technology, which ensures a smooth and stable arc for a superior welding experience. This technology helps to reduce spatter and improve bead appearance, resulting in cleaner welds. Additionally, the machine features an adjustable arc force control, allowing users to tailor the arc characteristics based on the specific requirements of their welding tasks.

Another key characteristic of the 250 GXT is its ease of use. The machine is equipped with a user-friendly control panel, featuring straightforward knobs for setting the amperage and voltage. This intuitive design allows even novice welders to achieve excellent results with minimal training. Moreover, the unit is relatively lightweight and portable, fitting easily into mobile welding projects.

Durability is a hallmark of Lincoln Electric products, and the 250 GXT is no exception. Constructed with high-quality materials, it is built to withstand the rigors of regular use in demanding environments. The machine is also designed with safety features, including thermal overload protection, which prevents overheating and ensures longevity.

In summary, the Lincoln Electric 250 GXT is a top-tier welding machine that combines power, precision, and user-friendliness. Its advanced technologies, robust construction, and versatility make it an ideal choice for welders looking to tackle a wide range of projects with confidence and skill. Whether you are working on fabrications, repairs, or artistic endeavors, the 250 GXT delivers the performance and reliability that professionals demand.