Lincoln Electric 275 manual Stick Welding Problems, TIG Welding Problems

Page 38

E-6

 

TROUBLESHOOTING

E-6

 

 

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

 

 

PROBLEMS

POSSIBLE

RECOMMENDED

 

 

(SYMPTOMS)

CAUSE

COURSE OF ACTION

 

 

 

 

 

 

STICK WELDING PROBLEMS

Stick electrode "blast off" when arc

1.

Current may be set too high for

is struck

 

electrode size

 

2.

(Machine with Advanced Control

 

 

PC board only) Hot Start Menu

 

 

setting too high

 

 

 

Stick electrode "sticks" in the weld

1.

Current may be set too low for

puddle

 

electrode size

 

2.

(Machine with Advanced Control

 

 

PC board only) Arc Force Menu

 

 

setting too low

 

 

 

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

TIG WELDING PROBLEMS

Poor starting in DC polarity

1.

Input line may be too low

 

2.

Bad connection at P11 of Control

 

 

PC board

 

3.

Bad Background rectifier, back-

 

 

ground resistor R7, or background

 

 

diode D2

 

 

Arc "flutters" in DC polarity, o.k. in

1. Tungsten not "sharp"

AC polarity

 

 

 

2.

Bad free wheeling diode D1 or its

 

connection

 

 

 

Arc "flutters" in both DC & AC polari-

1.

Tungsten electrode may be too

ties

 

large in diameter for the current

 

 

setting

 

2.

Gas shielding may be insufficient.

 

3.

Contaminated gas or leaks in the

 

 

gas line, torch, or connections

 

4.

Helium blend is used as a shield-

 

 

ing gas

 

 

 

 

 

 

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

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.

PRECISION TIG 275

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Contents Safety Depends on You Precision TIGSafety California Proposition 65 WarningsElectric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a LʼArcThank You Table of Contents Duty Cycle-Applications Volts at Rated Amperes Amps InstallationRated Input Single Phase only Precision TIGTemperature Ranges Recommended Input Wire and Fuse SizesPhysical Dimensions Additional Output CapacitySafety Precautions Input and Grounding Connections Output CABLES, Connections and Limitations Work Cable ConnectionStick Electrode Cable Connection TIG Torch Connection Figure A.2Auxiliary Power Connections Figure A.3Robotic Interface Connection Figure A.4Pipe Thawing OperationProduct Description Welding SparksProcess Limitations Recommended Processes and EquipmentRecommended Processes Equipment LimitationsControls and Settings Figure B.1 Control PanelOperation TIG Mode Menu Digital DisplayDo not USE 4-STEP if Using AN Amptrol Remote Advanced Panel ControlsOperation Stick Welding Features Internal SET UP ControlsTIG Welding Features Figure B.3 Figure B.4 TIG Weld Cycle Chart Setup Guidelines for TIG Welding With AN AmptrolFigure B.6 Smaw Process Making a TIG Weld with AN AmptrolRecommended Electrode Amperage Ranges Precision TIG Gtaw ProcessField Installed Options AccessoriesFactory Installed Options Optional EquipmentRoutine and Periodic Maintenance MaintenanceSafety Precautions Overload ProtectionSpark GAP Adjustment Service ProceduresComponent Access Meter Calibration Adjustment UNDER-COOLER ServiceTroubleshooting HOW to USE Troubleshooting GuideCourse of Action SymptomsOutput Problems Meter Problems GAS ProblemsHI-FREQ Problems Preset & Output Control Problems Stick Welding Problems TIG Welding ProblemsTIG Problems Wiring Diagram Wiring Diagram Dimension Print K2619-1 Domestic Precision TIG Precision TIG Aviso DE Warnung
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275 specifications

The Lincoln Electric 275 is a versatile multi-process welding machine that stands out for its advanced features and robust performance. Designed for both novice and experienced welders, the machine offers MIG, TIG, and stick welding capabilities, making it a valuable tool for a variety of applications.

One of the main features of the Lincoln Electric 275 is its power output. With an impressive selection of amperage settings, it can deliver between 25 to 275 amps, making it suitable for both thin and thick materials. This flexibility allows users to work on projects ranging from automotive repairs to industrial fabrication.

The machine utilizes inverter technology, which significantly enhances its efficiency and reduces power consumption. Inverter welders are known for their lightweight design and compact size compared to traditional transformer-based welders. This portability makes the Lincoln Electric 275 easy to transport to job sites, catering to both professional and hobbyist welders who require mobility.

Another defining characteristic of the Lincoln Electric 275 is its easy-to-use interface. The digital display provides clear readings, allowing users to effortlessly adjust settings for optimal performance. Additionally, the machine features a user-friendly control panel with distinct knobs for regulating voltage and wire feed speed, assisting welders in achieving precise welds.

The Lincoln Electric 275 is also equipped with advanced arc technologies. Its built-in arc control enhances the stability of the welding arc, resulting in a smoother, more consistent weld. Furthermore, the machine offers synergic controls that automatically adjust the voltage and wire feed speed based on the selected material and thickness, making the welding process more intuitive and reducing the margin for error.

Durability is another hallmark of the Lincoln Electric 275. Constructed with high-quality materials, the machine is built to withstand the rigors of daily use in demanding environments. Its design also incorporates efficient cooling mechanisms to prevent overheating during prolonged operations, ensuring longevity and reliability.

In conclusion, the Lincoln Electric 275 is a powerful and adaptable welding machine that combines advanced technology with user-friendly features. Its multi-process capabilities, inverter technology, and robust construction make it an essential tool for both professional welders and DIY enthusiasts. Whether tackling intricate projects or heavy-duty tasks, the Lincoln Electric 275 proves to be a reliable choice that does not compromise on performance.