Lincoln Electric 275 manual TIG Problems

Page 39

E-7

 

TROUBLESHOOTING

E-7

 

 

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

 

 

PROBLEMS

POSSIBLE

RECOMMENDED

 

 

(SYMPTOMS)

CAUSE

COURSE OF ACTION

 

 

 

 

 

 

TIG PROBLEMS

Arc "pulsates" in AC polarity,

DC

1.Micro switch S2A on polarity switch

polarity is o.k.

 

 

does not open in AC polarity

 

 

 

 

 

Black area along weld bead

 

1.

Oily or organic contamination from

 

 

 

work piece

 

 

 

 

2.

Tungsten electrode may be conta-

 

 

 

minated

 

 

 

 

3.

Leaks in gas line, torch, or con-

 

 

 

nections

 

 

 

 

 

Output quits momentarily; gas flow

1.

May be caused by hi-freq interfer-

and hi-freq are also interrupted

 

 

ence. Check that machine is

 

 

 

grounded

properly. Surrounding

 

 

 

machines that generate hi-freq

 

 

 

also should be properly grounded.

 

 

2.

Ground connection of Protection

 

 

 

PC board may has become loose

 

 

3.

Ground

connection

of

 

 

 

Bypass/Stabilizer PC board

may

 

 

 

has become loose.

 

 

 

 

 

 

 

 

 

 

 

 

 

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 Precision TIG Safety Depends on YouCalifornia Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionSûreté Pour Soudage a LʼArc Précautions DE SûretéThank You Table of Contents Precision TIG InstallationRated Input Single Phase only Duty Cycle-Applications Volts at Rated Amperes AmpsAdditional Output Capacity Recommended Input Wire and Fuse SizesPhysical Dimensions Temperature RangesSafety Precautions Input and Grounding Connections Work Cable Connection Stick Electrode Cable ConnectionOutput CABLES, Connections and Limitations Figure A.2 TIG Torch ConnectionFigure A.3 Auxiliary Power ConnectionsFigure A.4 Robotic Interface ConnectionWelding Sparks OperationProduct Description Pipe ThawingEquipment Limitations Recommended Processes and EquipmentRecommended Processes Process LimitationsFigure B.1 Control Panel Controls and SettingsOperation Digital Display TIG Mode MenuAdvanced Panel Controls Do not USE 4-STEP if Using AN Amptrol RemoteOperation Internal SET UP Controls TIG Welding FeaturesStick Welding Features Figure B.3 Figure B.4 Setup Guidelines for TIG Welding With AN Amptrol TIG Weld Cycle ChartFigure B.6 Gtaw Process Making a TIG Weld with AN AmptrolRecommended Electrode Amperage Ranges Precision TIG Smaw ProcessOptional Equipment AccessoriesFactory Installed Options Field Installed OptionsOverload Protection MaintenanceSafety Precautions Routine and Periodic MaintenanceService Procedures Component AccessSpark GAP Adjustment UNDER-COOLER Service Meter Calibration AdjustmentHOW to USE Troubleshooting Guide TroubleshootingSymptoms Output ProblemsCourse of Action GAS Problems Meter ProblemsHI-FREQ Problems Preset & Output Control Problems TIG Welding Problems Stick 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.
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