Page 2 - SAFETY; WARNING; CALIFORNIA PROPOSITION 65 WARNINGS
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 engine exhaust fumes outdoors....
Page 3 - ii; ELECTRIC SHOCK can kill.
ii SAFETY ii 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 clothing made from durable...
Page 4 - iii
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 the equipment in ac...
Page 5 - iv; PRÉCAUTIONS DE SÛRETÉ
iv SAFETY iv 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-vous contre la seco...
Page 6 - Thank You; Please Examine Carton and Equipment For Damage Immediately
Thank You for selecting a QUALITY product by Lincoln Electric. We want you to take pride in operating this Lincoln Electric Company product •••as much pride as we have in bringing this product to you! Read this Operators Manual completely before attempting to use this equipment. Save this manual and...
Page 7 - TABLE OF CONTENTS; AMPTROL
TABLE OF CONTENTS Page SAFETY .........................................................................................................................i-ivINSTALLATION SECTION .................................................................................................1 TECHNICAL SPECIFICATIONS ...
Page 8 - INSTALLATION; INPUT - SINGLE PHASE ONLY
1 INSTALLATION SQUARE WAVE TIG 175 1 TECHNICAL SPECIFICATIONS - Square Wave TIG 175 (K1478-1 & -2 only) For AC/DC Stick and DC TIG Welding at 150A/25% Duty Cycle and for AC TIG Welding up to 110A/25% Duty Cycle. Based on the 1996 U.S. National Electrical Code For AC TIG Welding at 150 A/25% Duty...
Page 9 - Safety Precautions; STACKING; should be lifted by two or; TILTING
2 INSTALLATION SQUARE WAVE TIG 175 2 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 Square Wave TIG 175...
Page 10 - INPUT CONNECTIONS; Technical Specifications; INPUT RECONNECT PROCEDURE; For the lowest rated voltage connection; CAUTION
3 INSTALLATION SQUARE WAVE TIG 175 3 with the earth for ten feet or more. b) A 3/4” (19mm) galvanized pipe or a 5/8” (16mm) solid galvanized iron, steel or copper rod drivenat least eight feet into the ground. The ground should be securely made and the ground-ing cable should be as short as possible...
Page 11 - Machine Grounding; •Keep cylinder upright and chained; Refer to
4 INSTALLATION SQUARE WAVE TIG 175 4 Electrode/Gas Output Receptacle on the front of thewelder and turn it clockwise until it is tight. This is aquick connect terminal and also provides the gas con-nection for the shielding gas to the torch. To avoid receiving a high frequency shock, keep theTIG tor...
Page 12 - REMOTE CONTROL CONNECTION; , foot activated remote
5 INSTALLATION SQUARE WAVE TIG 175 5 REMOTE CONTROL CONNECTION A remote control receptacle is provided on the casefront of the welder for connecting a remote control to tothe machine. A Foot Amptrol tm , foot activated remote control, is included with the Square Wave TIG 175.Refer to the Optional Ac...
Page 13 - OPERATION; GENERAL DESCRIPTION; INCLUDED EQUIPMENT; For Installation and startup:; WELDING CAPABILITY; SAFETY PRECAUTIONS
6 OPERATION 6 GENERAL DESCRIPTION The Square Wave TIG 175 is a constant current, singlerange AC/DC TIG (GTAW) arc welding power sourcewith built-in arc starter / stabilizer. It also has stick weld-ing (SMAW) capability. The Square Wave TIG 175 is recommended for the TIG(GTAW) and stick (SMAW) weldin...
Page 14 - Welding in TIG Mode; CONTROLS AND SETTINGS
7 OPERATION 7 1. POWER SWITCH & LIGHT - Turns power on or off to the welder. When switched “ON”, the cool-ing fan runs and the light will illuminate indicatingthat the power is on. 2. TIG/STICK SWITCH - Selects the mode of output, either TIG (GTAW) or Stick (SMAW). Refer to Welding in TIG Mode a...
Page 15 - Remote; OPERATING STEPS; WELDING IN TIG MODE; NOTE; cleaning
8 OPERATION 8 6. REMOTE CONTROL CONNECTOR - This connector provides connection for a remote control. See Remote Control Operation in this section of the manual. 7. ELECTRODE/GAS OUTPUT RECEPTACLE - This quick connect receptacle provides electrical connec-tion to the electrode holder and cable for St...
Page 16 - WELDING IN STICK MODE; RECOMMENDED ELECTRODE AMPERAGE RANGES - SQUARE WAVE TIG 175; SMAW Process
9 OPERATION 9 to weld through the complete range of 10 to 175 amperes inAC TIG or DC- TIG requiring only one electrode, a 3/32” 2%thoriated tungsten. WELDING IN STICK MODE 1. Put the electrode holder and cable quick connectplug into the electrode output receptacle. Turn clock-wise until tight. Conne...
Page 17 - ACCESSORIES; OPTIONAL ACCESSORIES; K814 Arc Start Switch -
10 ACCESSORIES 10 OPTIONAL ACCESSORIES K964-1 Undercarriage with Pivoting Single GasCylinder Platform - This undercarriage features a piv- oting platform to easily load and unload the gas cylin-der without lifting. It was designed specifically for theSquare Wave TIG 175 power source, and accommo-dat...
Page 18 - MAINTENANCE; Keep TIG torch and cables in good condition.; Replace any unreadable labels or decals.; FAN MOTOR OR FAN BLADE REPLACEMENT
11 MAINTENANCE 11 SQUARE WAVE TIG 175 ELECTRIC SHOCK can kill. • Only qualified personnel should perform this maintenance. • Turn the input power OFF at the disconnect switch or fuse boxbefore working on thisequipment. • Do not touch electrically hot parts. To avoid receiving a high frequency shock,...
Page 19 - TROUBLESHOOTING; Local; Step; HOW TO USE TROUBLESHOOTING GUIDE; DO NOT
12 TROUBLESHOOTING 12 SQUARE WAVE TIG 175 If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed. CAUTION This Troubleshoot...
Page 20 - Observe all Safety Guidelines detailed throughout this manual; for technical troubleshooting assistance before you proceed.; OUTPUT PROBLEMS; Contact your; Local Lincoln Authorized; for technical
13 TROUBLESHOOTING 13 SQUARE WAVE TIG 175 Observe all Safety Guidelines detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troublesho...
Page 22 - TIG MODE PROBLEMS
15 TROUBLESHOOTING 15 SQUARE WAVE TIG 175 Observe all Safety Guidelines detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troublesho...
Page 23 - TIG WELDING PROBLEMS; Technical
16 TROUBLESHOOTING 16 SQUARE WAVE TIG 175 Observe all Safety Guidelines detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troublesho...
Page 25 - STICK WELDING PROBLEMS
18 TROUBLESHOOTING 18 SQUARE WAVE TIG 175 Observe all Safety Guidelines detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troublesho...
Page 26 - WIRING DIAGRAM
19 WIRING DIAGRAM 19 SQUARE WAVE TIG 175 L10060 (-) (+) SCR4 SCR2 SCR1 D C B A F E D C B A L1 (-) T4 NC NO T3 S F L3 L4 C3 SCR3 115VAC Y W H1 X1 H G OPEN CLOSED CLOSED G4 216 G3 218 G2 G1 217 220 FRONT GANG E F PC BOARD THERMAL LIGHT J5 D1 J3 INPUT PLUG PL1 S2 R1 S3 MODE SWITCH TL1 SV1 S2A BYPASS/ S...
Page 28 - NOTES
Page 29 - Lincoln Welding School; BASIC COURSE; weeks of fundamentals
Now Available...12th EditionThe Procedure Handbook of Arc Welding With over 500,000 copies of previous editions published since 1933, the Procedure Handbook is considered by many to be the “Bible” of the arc welding industry. This printing will go fast so don’t delay. Place your order now using the ...