Lincoln Electric SVM141-A - Manuals
Lincoln Electric SVM141-A – Manual in PDF format online.
Manuals:
Manual Lincoln Electric SVM141-A
Summary
SAFETY i i SQUARE WAVE TIG 275 FOR ENGINEpowered equipment. 1.a. Turn 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...
SAFETY ii ii SQUARE WAVE TIG 275 ARC RAYS can burn. 4.a. Use a shield with the proper filter and cover plates to protect your eyes from sparks andthe rays of the arc when welding or observingopen arc welding. Headshield and filter lensshould conform to ANSI Z87. I standards. 4.b. Use suitable clothi...
SQUARE WAVE TIG 275 FOR ELECTRICALLYpowered equipment. 8.a. Turn off input power using the disconnect switch at the fuse box before working onthe equipment. 8.b. Install equipment in accordance with the U.S. National Electrical Code, all local codes and the manufacturer’srecommendations. 8.c. Ground...
SAFETY iv iv SQUARE WAVE 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. Protegez...
MASTER TABLE OF CONTENTS FOR ALL SECTIONS v v SQUARE WAVE TIG 275 Page Safety ...................................................................................................................................................................i-iv Installation ............................................
Section A-1 Section A-1 SQUARE WAVE TIG 275 TABLE OF CONTENTS - INSTALLATION SECTION - Installation ............................................................................................................................. Section A Technical Specifications, Square Wave TIG 275 (K1617-1) ...........
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC INSTALLATION A-2 A-2 SQUARE WAVE TIG 275 TECHNICAL SPECIFICATIONS - Square Wave TIG 275 For all Stick, DC TIG and Balanc...
Read this entire installation section before youstart installation. SAFETY PRECAUTIONS ELECTRIC SHOCK can kill. • Only qualified personnel should per- form this installation. • Turn the input power OFF at the dis- connect switch or fuse box beforeworking on this equipment. • Do not touch electricall...
1. Keep the welder power supply lines as short aspossible and enclose as much of them as possiblein rigid metallic conduit or equivalent shielding fora distance of 50 feet (15.2m). There should begood electrical contact between this conduit andthe welder case ground. Both ends of the conduitshould b...
Fuse the input circuit with the recommended super lagfuses or delay type 1 circuit breakers. Choose an input and grounding wire size according to local or nationalcodes or refer to the Technical Specifications page at the beginning of this section. Using fuses or circuitbreakers smaller than recomme...
USER SUPPLIED CONNECTORS The Square Wave TIG 275 should be permanentlywired into the power system. No plugs or connectorsare necessary. OUTPUT CONNECTIONS To avoid being startled by a high frequency shock, keepthe TIG torch and cables in good condition. ELECTRIC SHOCK can kill. • Turn the power swit...
TIG TORCH CONNECTION The Twist-Mate connection allows fast and reliable TIGtorch attachment to the electrode terminal of theSquare Wave TIG 275 welding power supply. Twist-Mate TIG adapters are made of brass, combining highelectrical conductivity with mechanical strength. Theyare available in severa...
4. Hold the TIG adapter, with cables and hoses installed, firmly in place by securing it into the Twist-Mate recep-tacle on the power source or into a padded vise.Apply a thin film of lubricant to the boot’s lead inchamfer area. Also apply lubricant to the lead inchamfer and 2” diameter on the TIG a...
NOTES A-10 A-10 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC
Section B-1 Section B-1 SQUARE WAVE TIG 275 TABLE OF CONTENTS - OPERATION SECTION - Operation ............................................................................................................................... Section B Safety Precautions ....................................................
OPERATION B-2 B-2 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC ELECTRIC SHOCKcan kill. • Do not touch electrically live parts or electrode with s...
GENERAL DESCRIPTION The Square Wave TIG 275 is a constant current, singlerange square wave AC/DC TIG (GTAW) arc weldingpower source with built-in high frequency stabilization.It also has stick (SMAW) capability. A TIG Pulser Kit,Power Factor Capacitor Kit, and a Water Solenoid Kitare available as fi...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC OPERATION B-4 B-4 SQUARE WAVE TIG 275 • Provides excellent arc starting and stability through- out the machines wide cur...
OPERATION B-5 B-5 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC 1. Current Control - This knob is used to set thewelding current from 5 to 315 amp...
8. Digital Voltmeter - This meter displays welding voltage, as measured on the output studs of theSquare Wave TIG 275. After welding is complete,the meter displays the welding voltage corre-sponding to the peak welding current and displaysthis value for approximately 5 seconds. 9. Thermal Protection...
TIG WELDING SEQUENCE OF OPERATION(2-Step TIG Mode) 1. Connect an Arc Start Switch or an Amptrol to the Remote Amphenol. 2. Turn the welder, gas supply and water supply (if equipped), on. The digital ammeter/voltmeter dis-plays will illuminate when the power is on. 3. Select the 2-Step TIG Mode with ...
11. Hold the Arc Start Switch down until an arc is established. The arc will start at a low currentvalue that is equal to 25% of the preset currentestablished in Step 4. It will remain at this currentas long as the Arc Start Switch is closed. Releasethe Arc Start Switch. At this point, the SquareWav...
STICK WELDING 1. Turn the welder “on”. The digital ammeter/volt-meter will illuminate when the power is on. 2. Set the Mode Switch to “STICK”. Set the outputcurrent using the Output Control Knob. No otherfunctions or adjustments operate in the StickMode. 3. Select the desired DC+/AC/DC- electrode po...
TABLE OF CONTENTS - ACCESSORIES - Accessories ........................................................................................................................... Section C Accessories Included with Machine .........................................................................................
ACCESSORIES INCLUDED WITHMACHINE K852-50 - Twist Mate Cable Plug for #2 to #1 Work Lead. K1622-1 - Twist Mate Adapter Kit for LA9 and LA17 Torches. K1622-2 - Twist Mate Adapter Kit for LW18 and LW20 Torches. OPTIONAL ACCESSORIES Any necessary installation instructions are included forthe following a...
Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Section D-1 Section D-1 SQUARE WAVE TIG 275 TABLE OF CONTENTS - MAINTENANCE SECTION - Maintenance .....................................................................................................................
SAFETY PRECAUTIONS ELECTRIC SHOCK can kill. • Only qualified personnel should per- form this maintenance. • Turn the input power OFF at the dis- connect switch or fuse box beforeworking on this equipment. • Do not touch electrically hot parts. To avoid receiving a high frequency shock, keep theTIG t...
COMPONENT LOCATION ANDACCESS CONTROL PC BOARD Remove the left case side. Use a 3/8" Nut Driver orother suitable tool. NOTE: The Case side can be removed while roof is inplace, as long as the three screws which secure theroof to the case side are removed. The PC Board ismounted on left divider as...
Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Section E-1 Section E-1 SQUARE WAVE TIG 275 TABLE OF CONTENTS - THEORY OF OPERATION SECTION - Theory of Operation .....................................................................................................
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC GENERAL DESCRIPTION The Square Wave TIG 275 machine is a constant cur-rent, single range square wave AC/DC TIG (GTAW) ar...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC OUTPUT RECTIFICATION, CONTROL BOARD AND FEEDBACK The AC output from the main transformer secondary isrectified and contr...
THEORY OF OPERATION E-4 E-4 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC HIGH VOLTAGE / HIGH FREQUENCYCIRCUIT The control board passes the 115 VA...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC THEORY OF OPERATION E-5 E-5 SQUARE WAVE TIG 275 FIGURE E.5 – DC WELDING OUTPUT FIGURE E.6 – DC WELDING CURRENT GENERATIO...
AC WELDING OUTPUT Rotating the polarity switch to the AC position changesthe welding power circuit. One lead (X1) of the maintransformer secondary is connected to the machine’soutput work terminal. The other secondary lead (X2) isconnected to one of the AC connections of the SCRbridge. The electrode...
SCR OPERATION A silicon controlled rectifier (SCR) is a three-terminaldevice 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 iscurrent flow from anode to cathode. In the ON statethe SCR acts lik...
PROTECTIVE CIRCUITS Protective circuits are designed into the Square WaveTIG 275 to sense trouble and shut down the machinebefore the trouble damages the internal machine com-ponents. Both thermal protection and current overloadare included. THERMAL PROTECTION Thermostats protect the machine from ex...
Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Section F-1 Section F-1 SQUARE WAVE TIG 275 TABLE OF CONTENTS - TROUBLESHOOTING & REPAIR SECTION - Troubleshooting & Repair Section ...........................................................................
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC HOW TO USE TROUBLESHOOTING GUIDE Service and repair should be performed by only Lincoln Electric Factory Trained Personn...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC ELECTRIC SHOCK can kill. Have an electrician install and servicethis equipment. Turn the input powerOFF at the fuse box ...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-4 F-4 SQUARE WAVE TIG 275 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-5 F-5 SQUARE WAVE TIG 275 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-7 F-7 SQUARE WAVE TIG 275 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-8 F-8 SQUARE WAVE TIG 275 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-9 F-9 SQUARE WAVE TIG 275 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-10 F-10 SQUARE WAVE TIG 275 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in t...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-11 F-11 SQUARE WAVE TIG 275 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in t...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC F-12 F-12 SQUARE WAVE TIG 275 TROUBLESHOOTING & REPAIR TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in t...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-13 F-13 SQUARE WAVE TIG 275 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in t...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-14 F-14 SQUARE WAVE TIG 275 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in t...
F-15 F-15 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in t...
F-16 F-16 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in t...
INSTALLATION F-17 F-17 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR TROUBLESHOOTING GUIDE Observe Safety Guidelines ...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-18 F-18 SQUARE WAVE TIG 275 HIGH FREQUENCY CIRCUIT DISABLE PROCEDURE WARNING Service and ...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-19 F-19 SQUARE WAVE TIG 275 LEADS ATTACH HERE .015 Spark Gap RIGHT SIDE VIEW OF MACHINE F...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-20 F-20 SQUARE WAVE TIG 275 WARNING T1 MAIN TRANSFORMER TEST Service and repair should be...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-21 F-21 SQUARE WAVE TIG 275 T1 MAIN TRANSFORMER TEST (continued) FIGURE F.2 – PLUG J8 LOC...
TROUBLESHOOTING & REPAIR F-22 F-22 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC T1 MAIN TRANSFORMER TEST (continued) 6. If all of the seconda...
TROUBLESHOOTING & REPAIR F-23 F-23 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC T1 MAIN TRANSFORMER TEST (continued) TABLE F.1. T1 TRANSFORME...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-24 F-24 SQUARE WAVE TIG 275 WARNING GAS (WATER) SOLENOID TEST Service and repair should b...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-25 F-25 SQUARE WAVE TIG 275 GAS (WATER) SOLENOID TEST (continued) FIGURE F.3 – GAS SOLENO...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-26 F-26 SQUARE WAVE TIG 275 WARNING STATIC SCR TEST Service and repair should be performe...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-27 F-27 SQUARE WAVE TIG 275 STATIC SCR TEST (continued) FIGURE F.4 – PLUG J1 LOCATION ON ...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-28 F-28 SQUARE WAVE TIG 275 STATIC SCR TEST (continued) 3. Using an analog ohmmeter, test...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-29 F-29 SQUARE WAVE TIG 275 WARNING ACTIVE SCR TEST Service and repair should be performe...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-30 F-30 SQUARE WAVE TIG 275 ACTIVE SCR TEST (continued) FIGURE F.6 – PLUG J1 LOCATION ON ...
TROUBLESHOOTING & REPAIR F-31 F-31 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC ACTIVE SCR TEST (continued) FIGURE F.7 – ACTIVE SCR TEST SETU...
TROUBLESHOOTING & REPAIR F-32 F-32 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC ACTIVE SCR TEST (continued) FIGURE F.8 – SCR GATE LOCATIONS S...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-33 F-33 SQUARE WAVE TIG 275 This is the typical AC output voltagewaveform generated from ...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-34 F-34 SQUARE WAVE TIG 275 This is the typical DC (+) output volt-age waveform generated...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-35 F-35 SQUARE WAVE TIG 275 This is the typical AC output voltagewaveform generated from ...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-36 F-36 SQUARE WAVE TIG 275 NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM DC STICK MODE This is th...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-37 F-37 SQUARE WAVE TIG 275 TYPICAL OUTPUT VOLTAGE WAVEFORM - MACHINE LOADED AC TIG MODE ...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-42 F-42 SQUARE WAVE TIG 275 WARNING HIGH VOLTAGE TRANSFORMER REMOVAL AND REPLACEMENT Serv...
TROUBLESHOOTING & REPAIR F-43 F-43 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC HIGH VOLTAGE TRANSFORMER REMOVAL AND REPLACEMENT (continued) ...
TROUBLESHOOTING & REPAIR F-44 F-44 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC HIGH VOLTAGE TRANSFORMER REMOVAL AND REPLACEMENT (continued) ...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-45 F-45 SQUARE WAVE TIG 275 WARNING SCR BRIDGE ASSEMBLY REMOVAL AND REPLACEMENT Service a...
TROUBLESHOOTING & REPAIR F-46 F-46 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC SCR BRIDGE ASSEMBLY REMOVAL AND REPLACEMENT (continued) FIGUR...
TROUBLESHOOTING & REPAIR F-47 F-47 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC SCR BRIDGE ASSEMBLY REMOVAL AND REPLACEMENT (continued) FIGUR...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-49 F-49 SQUARE WAVE TIG 275 WARNING POLARITY SWITCH REMOVAL AND REPLACEMENT Service and r...
TROUBLESHOOTING & REPAIR F-50 F-50 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC POLARITY SWITCH REMOVAL AND REPLACEMENT (continued) FIGURE F....
TROUBLESHOOTING & REPAIR F-51 F-51 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC POLARITY SWITCH REMOVAL AND REPLACEMENT (continued) FIGURE F....
TROUBLESHOOTING & REPAIR F-52 F-52 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC POLARITY SWITCH REMOVAL AND REPLACEMENT (continued) FIGURE F....
TROUBLESHOOTING & REPAIR F-53 F-53 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC POLARITY SWITCH REMOVAL AND REPLACEMENT (continued) For Steps...
Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-54 F-54 SQUARE WAVE TIG 275 WARNING MAIN TRANSFORMER AND OUTPUT CHOKE ASSEMBLY REMOVAL AN...
TROUBLESHOOTING & REPAIR F-55 F-55 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC MAIN TRANSFORMER AND OUTPUT CHOKE ASSEMBLY REMOVAL AND REPLAC...
TROUBLESHOOTING & REPAIR F-56 F-56 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC MAIN TRANSFORMER AND OUTPUT CHOKE ASSEMBLY REMOVAL AND REPLAC...
TROUBLESHOOTING & REPAIR F-57 F-57 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC MAIN TRANSFORMER AND OUTPUT CHOKE ASSEMBLY REMOVAL AND REPLAC...
TROUBLESHOOTING & REPAIR F-58 F-58 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC MAIN TRANSFORMER AND OUTPUT CHOKE ASSEMBLY REMOVAL AND REPLAC...
RETEST AFTER REPAIR Should a machine under test be rejected for any reason requiring the removal of any mechanical part that couldaffect the machine’s electrical characteristics, or if any electrical components are repaired or replaced, the machinemust be retested. INPUT IDLE AMPS Input Volts/Hertz ...
ELECTRICAL DIAGRAMS G-2 G-2 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Wiring Diagram (L10747) NOTE: This diagram is for reference only. It may...
ELECTRICAL DIAGRAMS G-10 G-10 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Bypass Board Layout (L10121-1) NOTE: Lincoln Electric assumes no respo...
Notes G-11 G-11 SQUARE WAVE TIG 275 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC
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