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IM908
October, 2006
PRECISION TIG 275
For use with machines having Code Numbers: 11370
Safety Depends on You
Lincoln arc welding and cutting
equipment is designed and built
with safety in mind. However, your
overall safety can be increased by
proper installation ... and thoughtful
operation on your part. DO NOT
INSTALL, OPERATE OR REPAIR
THIS EQUIPMENT WITHOUT
READING THIS MANUAL AND
THE SAFETY PRECAUTIONS
CONTAINED THROUGHOUT.
And, most importantly, think before
you act and be careful.
Precisio
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i i SAFETY WARNING CALIFORNIA PROPOSITION 65 WARNINGS For Diesel Engines: Diesel engine exhaust and For Gasoline Engines: The engine exhaust from some of its constituents are known to the State this product contains chemicals known to the of California to cause cancer, birth defects, and State of California to cause cancer, birth defects, other reproductive harm. or other reproductive harm. ARC WELDING CAN BE HAZARDOUS. PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH. KEEP CHIL
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ii ii SAFETY ELECTRIC SHOCK can kill. ARC RAYS can burn. 3.a. The electrode and work (or ground) circuits 4.a. Use a shield with the proper filter and cover are electrically “hot” when the welder is on. plates to protect your eyes from sparks and Do not touch these “hot” parts with your bare the rays of the arc when welding or observing skin or wet clothing. Wear dry, hole-free open arc welding. Headshield and filter lens gloves to insulate hands. should conform to ANSI Z87. I standards. 3.b. In
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iii iii SAFETY WELDING SPARKS can CYLINDER may explode cause fire or explosion. if damaged. 6.a. Remove fire hazards from the welding area. 7.a.Use only compressed gas cylinders If this is not possible, cover them to prevent containing the correct shielding gas for the the welding sparks from starting a fire. process used and properly operating Remember that welding sparks and hot regulators designed for the gas and materials from welding can easily go through small cracks pressure used. All hos
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iv iv SAFETY PRÉCAUTIONS DE SÛRETÉ 6. Eloigner les matériaux inflammables ou les recouvrir afin de prévenir tout risque d’incendie dû aux étincelles. Pour votre propre protection lire et observer toutes les instructions et les précautions de sûreté specifiques qui parraissent dans ce 7. Quand on ne soude pas, poser la pince à une endroit isolé de manuel aussi bien que les précautions de sûreté générales suiv- la masse. Un court-circuit accidental peut provoquer un antes: échauffement et un risqu
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v v SAFETY
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vi vi SAFETY
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vii vii for selecting a QUALITY product by Lincoln Electric. We want you to take pride in operating this Lincoln Electric Company product ��� Thank You as much pride as we have in bringing this product to you! Please Examine Carton and Equipment For Damage Immediately When this equipment is shipped, title passes to the purchaser upon receipt by the carrier. Consequently, Claims for material damaged in shipment must be made by the purchaser against the transportation company at the time the shipm
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viii viii TABLE OF CONTENTS Page. Installation ..........................................................................................................Section A Technical Specifications ........................................................................................A-1,A-2 Safety Precautions.. ............................................................................................................................................... .A-3 Select Suitable Location....................
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A-1 A-1 INSTALLATION TECHNICAL SPECIFICATIONS-PRECISION TIG 275 (K1827-2 Export-50/60Hz) RATED INPUT - SINGLE PHASE ONLY K Duty Cycle-Applications Voltage + 10% Max. Amps With Out Max. Amps With Number Power Factor Capacitor Power Factor Capacitor 40% AC/DC Stick / Balance TIG 95/55/50 80/46/43 # K1827-2 Unbalance (70% Penetration ) AC TIG 109/63/58 86/50/46 60% AC/DC Stick / Balance TIG 220-230/ 80/46/42 64/37/34 # Unbalance (70% Penetration ) AC TIG 380-400/415 67/39/36 85/49/45 100% N80 A
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A-2 A-2 INSTALLATION RATED OUTPUT - IEC 60974-1 (K1827-2) Duty Cycle-Applications Volts at Rated Amperes Amps 40% AC/DC Stick / Balance TIG 31.0 275 # Unbalance (70% Penetration ) AC TIG 20.2 255 60% AC/DC Stick / Balance TIG 29.0 225 # Unbalance (70% Penetration ) AC TIG 18.0 200 100% AC/DC Stick / Balance TIG 28.0 200 # Unbalance (70% Penetration ) AC TIG 16.0 150 ADDITIONAL OUTPUT CAPACITY Output Current Maximum Open Type of Output Auxiliary Power Range Circuit Voltage 15Amp Circuit Break
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A-3 A-3 INSTALLATION ENVIRONMENTAL RATING SAFETY PRECAUTIONS Read entire installation section before starting Precision TIG 275 power sources carry an IP21S installation. Environmental rating. They are rated for use in damp, dirty rain-sheltered environments. WARNING MACHINE GROUNDING AND HIGH FRE- ELECTRIC SHOCK can kill. � Only qualified personnel should QUENCY INTERFERENCE PROTECTION perform this installation. � Turn the input power OFF at the The frame of the welder must be grounded. A
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A-4 A-4 INSTALLATION 3. Be sure the torch and work cable rubber coverings INPUT and GROUNDING CONNECTIONS are free of cuts and cracks that allow high frequen- cy leakage. Cables with high natural rubber content, WARNING such as Lincoln Stable-Arc® better resist high fre- ELECTRIC SHOCK can kill. quency leakage than neoprene and other synthetic rubber insulated cables. � Turn the input power OFF at the disconnect switch or fuse box before working on this 4. Keep the torch in good repair and al
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A-5 A-5 INSTALLATION 1. Connect the terminal marked (below the recon- Recommended Cable Sizes for Combined Lengths of o nect panel) to an earth ground. Copper Work and Electrode Cables using 75 C Wire: 2. Connect the input leads to terminals marked L1 (U) Machine Rating 0 to 100 Ft. 101 to 200 Ft 201 to 250 Ft and L2 (V) on the reconnect panel. Use a single 2 2 2 275A/40% #1 (42.4 mm ) 1/0 (53.5 mm ) 2/0 (67.4 mm ) phase line or one phase of a two or three phase line. W
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A-6 A-6 INSTALLATION FIGURE A.2 TIG TORCH REMOTE CONNECTION CONTROL PANEL RECEPTACLE ST STI IC CK K WO WOR RK K WORK STICK ELECTRODE STUD STUD (Shown without hinged stud cover) FIGURE A CABLE STRAIN RELIEF HOLES TIG TORCH CONNECTION CYLINDER could explode if damaged. The Precision TIG torch connection box, located on the � Keep cylinder upright and right side of the machine, provides all the input and chained to a support. output connections for the installation of both air- � Keep cylinder
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A-7 A-7 INSTALLATION FIGURE A.3 For Gas Supply hose with 5/8-18RH male (Provided with Weld Package model) For Coolant Supply Hoses with 5/8-18LH male (Provided with Weld Package model or Under-Cooler Cart) The Precision TIG Export models also provide a AUXILIARY POWER CONNECTIONS grounded 220vac Euro type Schuko receptacle and a 5 amp circuit breaker, located on the upper case back The Precision TIG machines provide a standard NEMA on the reconnect side of the machine, intended for use 5-15R
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A-8 A-8 INSTALLATION ROBOTIC INTERFACE CONNECTION Robotic interface can be made at the Remote Receptacle (See Operation Section B-2). The machine is shipped with the remote receptacle circuit internally connected to receptacle J5 of the Control board for standard Amptrol operation. In order to enable the remote receptacle for robotic interface its connection plug must be moved from J5 to J5A on the Control board. (Refer to the machine Wiring Diagram.) The robotic interface functions with the
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B-1 B-1 OPERATION SAFETY PRECAUTIONS PRODUCT DESCRIPTION Read and understand this entire section before operat- The Precision TIG 275 is part of a new family of indus- ing the machine. trial arc welding power sources providing constant cur- rent, single range square wave AC/DC TIG (GTAW) TM with new patented (pending) Micro-Start Technology, WARNING Presettable Min. and Max. Output controls, and built-in ELECTRIC SHOCK can kill. high frequency stabilization for continuous AC TIG and � Only quali
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B-2 B-2 OPERATION EQUIPMENT LIMITATIONS RECOMMENDED PROCESSES AND The Precision TIG machines are protected from over- EQUIPMENT loads beyond the electrical ratings and duty cycles, per the Specifications Section A-1, A-2, with Thermostat protection of the primary and secondary transformer coils. RECOMMENDED PROCESSES The Precision TIG 275 is recommended for the TIG The Precision TIG machines do not have Hi-Freq. (GTAW) and Stick (SMAW) welding processes within available at the Stick electrode st
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B-3 B-3 OPERATION CONTROLS AND SETTINGS The Front Control Panel contains the knobs and switches necessary for adjusting the operation of the Precision TIG 275, with function indicator lights and an electronic display for volts and amps. The components are described below: FIGURE B.1 - CONTROL PANEL 1. POWER SWITCH 2. POLARITY SWITCH 3. MODE SWITCH 4. AC BALANCE CONTROL 5. LOCAL/REMOTE CURRENT CONTROL SWITCH 6. MAXIMUM OUTPUT CONTROL 7. MINIMUM OUTPUT CONTROL AND DISPLAY SWITCH 8.DIGITAL METER A
