Lincoln Electric TIG 375 manual Operation, Product Description, Pipe Thawing, Welding Sparks

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B-1

OPERATION

B-1

SAFETY PRECAUTIONS

Read and understand this entire section before operat- ing the machine.

WARNING

ELECTRIC SHOCK can kill.

Only qualified personnel should perform this installation.

Turn the input power OFF at the disconnect switch or fuse box.

Do not touch electrically live parts or electrode with skin or wet cloth- ing.

Insulate yourself from work and ground.

Always wear dry insulating gloves.

Read and follow “Electric Shock Warnings” in the Safety section if weld- ing must be performed under electrical- ly hazardous conditions such as weld- ing in wet areas or on or in the work- piece.

FUMES AND GASES can be dangerous.

• Keep your head out of fumes.

• Use ventilation or exhaust to remove fumes from breathing zone.

WELDING SPARKS

can cause fire or explosion

Keep flammable material away.

Do not weld on containers that have held combustibles.

ARC RAYS can burn.

• Wear eye, ear and body protection.

Observe additional Safety Guidelines detailed in the beginning of this manual.

PRODUCT DESCRIPTION

The Precision TIG 375 is part of a new family of indus- trial arc welding power sources providing constant cur- rent, single range square wave AC/DC TIG (GTAW) with patented Micro-StartTMII Technology, Presettable Min. and Max. Output controls, and built-in high fre- quency stabilization for continuous AC TIG and DC TIG starting. It also has AC/DC Stick (SMAW) capability, with adjustable Arc Force availability. A TIG Pulse Panel, Power Factor Capacitors and a Water Solenoid are available as field installed optional kits. Also, a new Undercarriage (with double gas bottle rack) is available for field installation, as well as a new Under-Cooler Cart, which is also included in an available efficiently integrated entire TIG Welding Package with conve- nient built-in storage provisions for welding equipment and components.

The Precision TIG 375 includes advanced features such as: Digital Meter, Presettable control, Auto Balance, Fan As Needed (F.A.N.) and Timers for fixed Peflow and variable Postflow shielding gas. Also 2-Step/4-Step and Pulse TIG operation with adjustable Downslope Time control advanced controls are includ- ed. The model still features a Stick stud panel and a universal TIG torch connection box for simultaneous, but separated, electrode outputs.

The Precision TIG 375 has enhanced Features which includes the following:

MicroStart™ II

Auto-Balance optimized

Menu button added

Spot On selection added

PIPE THAWING

The Precision TIG 375 is not recommended for pipe thawing.

Duty Cycle

The duty cycle is based upon a 10-minute time period; i.e., for 40% duty cycle, it is 4 minutes welding and 6 minutes idling. If the rated duty cycle is significantly exceeded, the thermostatic protection will shut off the output until the machine cools to a normal operating temperature. (Refer to Specification Section A-1)

PRECISION TIG 375

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Contents Safety Depends on You Precision TIGSafety California Proposition 65 WarningsElectric Shock can kill Welding and Cutting Sparks can Cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a LʼArcThank You Table of Contents Installation Rated Input Single Phase onlyDuty Cycle-Applications Volts at Rated Amperes Amps Precision TIGRecommended Input Wire and Fuse Sizes Physical DimensionsTemperature Ranges Additional Output CapacitySafety Precautions Input and Grounding Connections Work Cable Connection Output CABLES, Connections and LimitationsStick Electrode Cable Connection TIG Torch Connection Figure A.2Auxiliary Power Connections Figure A.3Robotic Interface Connection Figure A.4Operation Product DescriptionPipe Thawing Welding SparksRecommended Processes and Equipment Recommended ProcessesProcess Limitations Equipment LimitationsControls and Settings Figure B.1 Control PanelOperation TIG Mode Menu 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 AmptrolGtaw Process Accessories Factory Installed OptionsField Installed Options Optional EquipmentMaintenance Safety PrecautionsRoutine and Periodic Maintenance Overload ProtectionService Procedures Component AccessSpark GAP 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 K2622-1 Domestic Precaucion Aviso DE