Lincoln Electric 275 manual Safety Precautions

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INSTALLATION

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SAFETY PRECAUTIONS

Read entire installation section before starting installation.

WARNING

ELECTRIC SHOCK can kill.

•Only qualified personnel should perform this installation.

•Turn the input power OFF at the disconnect switch or fuse box before working on this equipment.

•Do not touch electrically hot parts.

•Always connect the Precision TIG 275 grounding screw (behind the reconnect panel cover located near the back of the left case side) to a good electrical earth ground.

•Always connect the Precision TIG 275 to a power supply grounded in accordance with the National Electrical Code and all local codes.

SELECT SUITABLE LOCATION

Place the welder where clean cooling air can freely cir- culate in through the top rear vents and out through the bottom rear vents. Dirt, dust or any foreign material that can be drawn into the welder should be kept at a minimum. Failure to observe these precautions can result in excessive operating temperatures and nui- sance trips.

GRINDING

Do not direct grinding particles towards the welder. An abundance of conductive material can cause mainte- nance problems.

STACKING

The Precision TIG 275's cannot be stacked .

UNDERCARRIAGE LIFTING AND MOVING

When the Precision TIG 275 is purchased as a weld- ing package, or used with any of the available Undercarriage optional accessories, proper installation makes the Precision TIG 275 lift bale nonfunctional. Do not attempt to lift the power source with an under- carriage attached. The undercarriage is designed for hand moving only; mechanized movement can lead to personal injury and/or damage to the Precision TIG 275.

TILTING

Each machine must be placed on a secure, level sur- face, either directly or on a recommended undercar- riage. The machine may topple over if this precaution is not followed.

ENVIRONMENTAL RATING

Precision TIG 275 power sources carry an IP21S Environmental rating. They are rated for use in damp, dirty rain-sheltered environments.

MACHINE GROUNDING AND HIGH FRE- QUENCY INTERFERENCE PROTECTION

The frame of the welder must be grounded. A ground screw marked with the symbol is located on the input connection panel (Figure A.1) for this purpose. See your local and nation- al electrical codes for proper grounding methods.

The spark gap oscillator in the high frequency genera- tor, being similar to a radio transmitter, can be blamed for many radio, TV and electronic equipment interfer- ence problems. These problems may be the result of radiated interference. Proper grounding methods can reduce or eliminate radiated interference.

The Precision TIG 275 has been field tested under rec- ommended installation conditions and has been found to comply with F.C.C. allowable radiation limits. This welder has also been found to comply with NEMA stan- dards for high frequency stabilized power sources.

Radiated interference can develop in the following four ways:

•Direct interference radiated from the welder.

•Direct interference radiated from the welding leads.

•Direct interference radiated from feedback into the power lines.

•Interference from re-radiation of "pickup" by ungrounded metallic objects.

Keeping these contributing factors in mind, installing the equipment per the following instructions should minimize problems:

1.Keep the welder power supply lines as short as possible. Input leads within 50 feet (15.2 m) of the welder should be enclosed in rigid metallic conduit or equivalent shielding. There must be good electri- cal contact between this conduit and the welder. Both ends of the conduit must be connected to a driven ground and the entire length must be contin- uous.

2.Keep the work and electrode leads as short as pos- sible and as close together as possible. Lengths should not exceed 25 feet (7.6 m). Tape the leads together when practical.

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 Stick Electrode Cable Connection Work Cable ConnectionOutput CABLES, Connections and Limitations 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 TIG Welding Features Internal SET UP ControlsStick 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 ProtectionComponent Access Service ProceduresSpark GAP Adjustment Meter Calibration Adjustment UNDER-COOLER ServiceTroubleshooting HOW to USE Troubleshooting GuideOutput Problems SymptomsCourse of Action 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.
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