Manuale d’uso / di manutenzione del prodotto SVM141-A del fabbricante Lincoln Electric
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SVM141-A November , 1998 Safety Depends on Y ou Lincoln arc welding and cutting equipment is designed and built with safety in mind. However , your overall safety can be in- creased by proper installation .
SAFETY i i SQUARE W A VE TIG 275 FOR ENGINE powered equipment. 1.a. T urn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running. ____________________________________________________ 1.b. Operate engines in open, well-ventilated areas or vent the engine exhaust fumes outdoors.
SAFETY ii ii SQUARE W A VE TIG 275 ARC RA YS can burn. 4.a. Use a shield with the proper filter and cover plates to protect your eyes from sparks and the rays of the arc when welding or observing open arc welding. Headshield and filter lens should conform to ANSI Z87.
SQUARE W A VE TIG 275 FOR ELECTRICALL Y powered equipment. 8.a. T urn off input power using the disconnect switch at the fuse box before working on the equipment. 8.b. Install equipment in accordance with the U.S. National Electrical Code, all local codes and the manufacturer’s recommendations.
SAFETY iv iv SQUARE W A VE TIG 275 PRÉCAUTIONS DE SÛRETÉ Pour votre propre protection lire et observer toutes les instructions et les précautions de sûreté specifiques qui parraissent dans ce manuel aussi bien que les précautions de sûreté générales suiv- antes: Sûreté Pour Soudage A L ’Arc 1.
MASTER T ABLE OF CONTENTS FOR ALL SECTIONS v v SQUARE W A VE TIG 275 Page Safety ...................................................................................................................................................................i-iv Installation .
Section A-1 Section A-1 SQUARE W A VE TIG 275 T ABLE OF CONTENTS - INST ALLA TION SECTION - Installation ............................................................................................................................. Section A T echnical Specifications, Square W ave TIG 275 (K1617-1) .
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC INST ALLA TION A-2 A-2 SQUA.
Read this entire installation section before you start installation. SAFETY PRECAUTIONS ELECTRIC SHOCK can kill. • Only qualified personnel should per- form this installation. • T urn the input power OFF at the dis- connect switch or fuse box before working on this equipment.
1. Keep the welder power supply lines as short as possible and enclose as much of them as possible in rigid metallic conduit or equivalent shielding for a distance of 50 feet (15.2m). There should be good electrical contact between this conduit and the welder case ground.
Fuse the input circuit with the recommended super lag fuses or delay type 1 circuit breakers. Choose an input and grounding wire size according to local or national codes or refer to the T echnical Specifications page at the beginning of this section.
USER SUPPLIED CONNECT ORS The Square W ave TIG 275 should be permanently wired into the power system. No plugs or connectors are necessary . OUTPUT CONNECTIONS T o avoid being startled by a high frequency shock, keep the TIG torch and cables in good condition.
TIG T ORCH CONNECTION The T wist-Mate connection allows fast and reliable TIG torch attachment to the electrode terminal of the Square W ave TIG 275 welding power supply . T wist- Mate TIG adapters are made of brass, combining high electrical conductivity with mechanical strength.
INST ALLA TION A-8 A-8 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Retu.
4. Hold the TIG adapter , with cables and hoses installed, firmly in place by securing it into the T wist-Mate recep- tacle on the power source or into a padded vise. Apply a thin film of lubricant to the boot’s lead in chamfer area. Also apply lubricant to the lead in chamfer and 2” diameter on the TIG adapter .
NOTES A-10 A-10 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to M.
Section B-1 Section B-1 SQUARE W A VE TIG 275 T ABLE OF CONTENTS - OPERA TION SECTION - Operation ............................................................................................................................... Section B Safety Precautions .
OPERA TION B-2 B-2 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC ELECTRIC SHOCK can kill. • Do not touch electrically live parts or electrode with skin or wet clothing.
GENERAL DESCRIPTION The Square W ave TIG 275 is a constant current, single range square wave AC/DC TIG (GT AW) arc welding power source with built-in high frequency stabilization. It also has stick (SMA W) capability . A TIG Pulser Kit, Power Factor Capacitor Kit, and a W ater Solenoid Kit are available as field installed options.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC OPERA TION B-4 B-4 SQUARE W.
OPERA TION B-5 B-5 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC 1. Current Control - This knob is used to set the welding current from 5 to 315 amps.
8. Digital V oltmeter - This meter displays welding voltage, as measured on the output studs of the Square W ave TIG 275. After welding is complete, the meter displays the welding voltage corre- sponding to the peak welding current and displays this value for approximately 5 seconds.
TIG WELDING SEQUENCE OF OPERA TION (2-Step TIG Mode) 1. Connect an Arc Start Switch or an Amptrol to the Remote Amphenol. 2. T urn the welder , gas supply and water supply (if equipped), on. The digital ammeter/voltmeter dis- plays will illuminate when the power is on.
1 1. Hold the Arc Start Switch down until an arc is established. The arc will start at a low current value that is equal to 25% of the preset current established in Step 4. It will remain at this current as long as the Arc Start Switch is closed. Release the Arc Start Switch.
STICK WELDING 1. T urn the welder “on”. The digital ammeter/volt - meter will illuminate when the power is on. 2. Set the Mode Switch to “STICK”. Set the output current using the Output Control Knob. No other functions or adjustments operate in the Stick Mode.
NOTES B-10 B-10 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to M.
T ABLE OF CONTENTS - ACCESSORIES - Accessories ........................................................................................................................... Section C Accessories Included with Machine ....................................
ACCESSORIES INCLUDED WITH MACHINE K852-50 - T wist Mate Cable Plug for #2 to #1 Work Lead. K1622-1 - T wist Mate Adapter Kit for LA9 and LA17 T orches.
Retur n to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section D-1 Section D-1 SQUARE W A VE TIG 275 T ABLE OF CONTENTS - MAINTENANCE SECTION - Maintenance .................................................................
SAFETY PRECAUTIONS ELECTRIC SHOCK can kill. • Only qualified personnel should per- form this maintenance. • T urn the input power OFF at the dis- connect switch or fuse box before working on this equipment. • Do not touch electrically hot parts.
COMPONENT LOCA TION AND ACCESS CONTROL PC BOARD Remove the left case side. Use a 3/8" Nut Driver or other suitable tool. NOTE: The Case side can be removed while roof is in place, as long as the three screws which secure the roof to the case side are removed.
MAINTENANCE D-4 D-4 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC 4 3 5 12 11 2 1 9 8 13 10 7 6 SQUARE WAVE TIG 275 FIGURE D.
Retur n to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section E-1 Section E-1 SQUARE W A VE TIG 275 T ABLE OF CONTENTS - THEOR Y OF OPERA TION SECTION - Theory of Operation ...............................................
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC GENERAL DESCRIPTION The Squ.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC OUTPUT RECTIFICA TION, CONTROL BOARD AND FEEDBACK The AC output from the main transformer secondary is rectified and controlled through the SCR bridge.
THEOR Y OF OPERA TION E-4 E-4 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master T.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC THEOR Y OF OPERA TION E-5 E-5 SQUARE W A VE TIG 275 FIGURE E.5 – DC WELDING OUTPUT FIGURE E.
AC WELDING OUTPUT Rotating the polarity switch to the AC position changes the welding power circuit. One lead (X1) of the main transformer secondary is connected to the machine’s output work terminal. The other secondary lead (X2) is connected to one of the AC connections of the SCR bridge.
SCR OPERA TION A silicon controlled rectifier (SCR) is a three-terminal device used to control rather large currents to a load. An SCR acts very much like a switch. When a gate sig- nal is applied to the SCR, it is turned ON and there is current flow from anode to cathode.
PROTECTIVE CIRCUITS Protective circuits are designed into the Square W ave TIG 275 to sense trouble and shut down the machine before the trouble damages the internal machine com- ponents. Both thermal protection and current overload are included. THERMAL PROTECTION Thermostats protect the machine from excessive oper- ating temperatures.
Retur n to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section F-1 Section F-1 SQUARE W A VE TIG 275 T ABLE OF CONTENTS - TROUBLESHOOTING & REP AIR SECTION - T roubleshooting & Repair Section .....................
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC HOW T O USE TROUBLESHOOTING GUIDE Service and repair should be performed by only Lincoln Electric Factory Trained Personnel.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC ELECTRIC SHOCK can kill. Have an electrician install and service this equipment.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-4 F-4 SQUARE W A VE TIG 275 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-5 F-5 SQUARE W A VE TIG 275 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-6 F-6 SQUARE W A VE TIG 275 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-7 F-7 SQUARE W A VE TIG 275 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-8 F-8 SQUARE W A VE TIG 275 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-9 F-9 SQUARE W A VE TIG 275 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-10 F-10 SQUARE W A VE TIG 275 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-11 F-11 SQUARE W A VE TIG 275 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC F-12 F-12 SQUARE W A VE TIG 275 TROUBLESHOOTING & REP AIR TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-13 F-13 SQUARE W A VE TIG 275 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-14 F-14 SQUARE W A VE TIG 275 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual.
F-15 F-15 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual.
F-16 F-16 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual.
INST ALLA TION F-17 F-17 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP A.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-19 F-19 SQUARE W A VE TIG 275 LEADS A TT ACH HERE .
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP A.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-21 F-21 SQUARE W A VE TIG 275 T1 MAIN TRANSFORMER TEST (continued) FIGURE F .
TROUBLESHOOTING & REP AIR F-22 F-22 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC T1 MAIN TRANSFORMER TEST (continued) 6.
TROUBLESHOOTING & REP AIR F-23 F-23 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC T1 MAIN TRANSFORMER TEST (continued) T ABLE F .
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP A.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-25 F-25 SQUARE W A VE TIG 275 GAS (W A TER) SOLENOID TEST (continued) FIGURE F .
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP A.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-27 F-27 SQUARE W A VE TIG 275 ST A TIC SCR TEST (continued) FIGURE F .
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-28 F-28 SQUARE W A VE TIG 275 ST A TIC SCR TEST (continued) 3.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-29 F-29 SQUARE W A VE TIG 275 W ARNING ACTIVE SCR TEST Service and repair should be performed by only Lincoln Electric factory trained personnel.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-30 F-30 SQUARE W A VE TIG 275 ACTIVE SCR TEST (continued) FIGURE F .
TROUBLESHOOTING & REP AIR F-31 F-31 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC ACTIVE SCR TEST (continued) FIGURE F .
TROUBLESHOOTING & REP AIR F-32 F-32 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC ACTIVE SCR TEST (continued) FIGURE F .
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-33 F-33 SQUARE W A VE TIG 275 This is the typical AC output voltage waveform generated from a properly operating machine.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-34 F-34 SQUARE W A VE TIG 275 This is the typical DC (+) output volt- age waveform generated from a prop- erly operating machine.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-35 F-35 SQUARE W A VE TIG 275 This is the typical AC output voltage waveform generated from a properly operating machine.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP A.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-37 F-37 SQUARE W A VE TIG 275 TYPICAL OUTPUT VOL T AGE W A VEFORM - MACHINE LOADED AC TIG MODE MACHINE LOADED TO 255 AMPS A T 30 V AC.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-38 F-38 SQUARE W A VE TIG 275 MACHINE LOADED TO 275 AMPS A T 31 VDC.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-39 F-39 SQUARE W A VE TIG 275 MACHINE LOADED TO 275 AMPS A T 31 VDC.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-40 F-40 SQUARE W A VE TIG 275 MACHINE LOADED TO 275 AMPS A T 31 VDC.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-41 F-41 SQUARE W A VE TIG 275 This is NOT the typical DC (+) output voltage waveform.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP A.
TROUBLESHOOTING & REP AIR F-43 F-43 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC HIGH VOL T AGE TRANSFORMER REMOV AL AND REPLACEMENT (continued) FIGURE F .
TROUBLESHOOTING & REP AIR F-44 F-44 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC HIGH VOL T AGE TRANSFORMER REMOV AL AND REPLACEMENT (continued) FIGURE F .
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP A.
TROUBLESHOOTING & REP AIR F-46 F-46 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SCR BRIDGE ASSEMBL Y REMOV AL AND REPLACEMENT (continued) FIGURE F .
TROUBLESHOOTING & REP AIR F-47 F-47 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SCR BRIDGE ASSEMBL Y REMOV AL AND REPLACEMENT (continued) FIGURE F .
TROUBLESHOOTING & REP AIR F-48 F-48 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SCR BRIDGE ASSEMBL Y REMOV AL AND REPLACEMENT (continued) REPLACEMENT PROCEDURE Refer to Figures F .
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP A.
TROUBLESHOOTING & REP AIR F-50 F-50 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC POLARITY SWITCH REMOV AL AND REPLACEMENT (continued) FIGURE F .
TROUBLESHOOTING & REP AIR F-51 F-51 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC POLARITY SWITCH REMOV AL AND REPLACEMENT (continued) FIGURE F .
TROUBLESHOOTING & REP AIR F-52 F-52 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC POLARITY SWITCH REMOV AL AND REPLACEMENT (continued) FIGURE F .
TROUBLESHOOTING & REP AIR F-53 F-53 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC POLARITY SWITCH REMOV AL AND REPLACEMENT (continued) For Steps 9--17, see Figure F .
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP A.
TROUBLESHOOTING & REP AIR F-55 F-55 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC MAIN TRANSFORMER AND OUTPUT CHOKE ASSEMBL Y REMOV AL AND REPLACEMENT (continued) FIGURE F .
TROUBLESHOOTING & REP AIR F-56 F-56 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC MAIN TRANSFORMER AND OUTPUT CHOKE ASSEMBL Y REMOV AL AND REPLACEMENT (continued) FIGURE F .
TROUBLESHOOTING & REP AIR F-57 F-57 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC MAIN TRANSFORMER AND OUTPUT CHOKE ASSEMBL Y REMOV AL AND REPLACEMENT (continued) 20.
TROUBLESHOOTING & REP AIR F-58 F-58 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return t.
RETEST AFTER REP AIR Should a machine under test be rejected for any reason requiring the removal of any mechanical part that could af fect the machine’ s electrical characteristics, or if any electrical components are repaired or replaced, the machine must be retested.
NOTES F-60 F-60 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to M.
ELECTRICAL DIAGRAMS G-1 G-1 SQUARE W A VE TIG 275 Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Electrical Diagrams Section .........................................................................................
ELECTRICAL DIAGRAMS G-2 G-2 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC W iring Diagram (L10747) NOTE: This diagram is for reference only .
ELECTRICAL DIAGRAMS G-3 G-3 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC W iring Diagram (L10747-2) NOTE: This diagram is for reference only .
G-4 ELECTRICAL DIAGRAMS SQUARE W A VE TIG 275 Control Board Schematic (G3358-1) X6 10 8 9 221K R209 50V 820p C89 22.1K R212 3.92K R213 10.0K R206 X8 3 2 1 X8 4 5 6 X5 13 12 1N4936 D45 1N4936 D46 1N4936 D44 18.2K R190 39.2K R189 4.75K R208 X6 11 12 13 50V .
G-5 ELECTRICAL DIAGRAMS SQUARE W A VE TIG 275 G-5 Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Control Board Schematic (G3358-2) J7A 6 .
G-6 ELECTRICAL DIAGRAMS SQUARE W A VE TIG 275 Display Board Schematic (L10768) N_GND DISP3 2 1 4 9 5 10 7 6 8 3 N_GND DISP1 2 1 4 9 5 10 7 6 8 3 1.00K R57 14 3 Rx Vdd d BANK1 g DATA OUT f CLOCK MC1448.
ELECTRICAL DIAGRAMS G-7 G-7 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Bypass Board Schematic (S22530) 80J 150V TP1 600V .
ELECTRICAL DIAGRAMS G-8 G-8 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Display Board Layout (L10770-1) DISPLAY L10770-1 ITEM ITEM REQ'D REQ'D PART NO.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC G-9 ELECTRICAL DIAGRAMS SQU.
ELECTRICAL DIAGRAMS G-10 G-10 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master T.
Notes G-11 G-11 SQUARE W A VE TIG 275 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to M.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Lincoln Electric SVM141-A è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Lincoln Electric SVM141-A - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Lincoln Electric SVM141-A imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Lincoln Electric SVM141-A ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Lincoln Electric SVM141-A, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Lincoln Electric SVM141-A.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Lincoln Electric SVM141-A. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Lincoln Electric SVM141-A insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
