Page 2 - SAFETY; WARNING; CALIFORNIA PROPOSITION 65 WARNINGS; The Above For Diesel Engines
SP-175 PLUS 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 fum...
Page 3 - ii
SP-175 PLUS 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 ...
Page 4 - iii
SP-125 PLUS 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 manufacturerʼsrecommendations. 8.c. Ground the equ...
Page 5 - iv; PRÉCAUTIONS DE SÛRETÉ
SP-175 PLUS 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 LʼArc 1. Protegez-vous co...
Page 6 - Thank You; Please Examine Carton and Equipment For Damage Immediately
SP-175 PLUS 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 thi...
Page 7 - vi; TABLE OF CONTENTS; Page
vi vi SP-175 PLUS TABLE OF CONTENTS Page Installation .......................................................................................................Section A Technical Specifications ........................................................................................A-1Identify and Loca...
Page 8 - INSTALLATION; TECHNICAL SPECIFICATIONS – SP-175 Plus; RATED; INPUT – SINGLE PHASE ONLY; 1 Amps – Rated Output
A-1 A-1 INSTALLATION SP-175 PLUS TECHNICAL SPECIFICATIONS – SP-175 Plus Fuse or Output Mode Input Voltage Breaker Size Input Amps Power Cord RATED 230V/60Hz 40 Super Lag 21/23 50 Amp, 250V, 208V/60Hz Three-Prong Plug (NEMA Type 6-50P) INPUT – SINGLE PHASE ONLY RATED OUTPUT OUTPUT RECOMMENDED INPUT C...
Page 9 - SAFETY PRECAUTIONS; Gun and cable assembly; ELECTRIC SHOCK can kill.
A-2 A-2 INSTALLATION SP-175 PLUS Read entire installation section before startinginstallation. SAFETY PRECAUTIONS IDENTIFY AND LOCATE COMPONENTS If you have not already done so, unpack the SP-175Plus from its carton and remove all packing materialaround the SP-175 Plus . Remove the following looseit...
Page 10 - SELECT SUITABLE LOCATION; OUTPUT CONNECTIONS; Accessories; Work Clamp Installation
A-3 A-3 INSTALLATION SP-175 PLUS SELECT SUITABLE LOCATION Locate the welder in a dry location where there is freecirculation of clean air into the louvers in the back andleft side and out the front of the unit. A location thatminimizes the amount of smoke and dirt drawn intothe louvers reduces the c...
Page 11 - Route the cable under and around the back of the; GAS CONNECTION; Connecting Gun Cable to the SP-175 Plus; power switch to the off “O” position.; CAUTION
A-4 A-4 INSTALLATION 3. Route the cable under and around the back of the Wire Feed Gearbox (6). 4. For GMAW Only: Refer to Figure A.2. As deliv- ered, the SP-175 Plus is wired for positive polarity.This is the appropriate configuration for the GasMetal Arc Welding (GMAW) process. To completeinstalla...
Page 12 - Attach the flow regulator to the cylinder valve and; INPUT CONNECTIONS; Chain the cylinder to a wall or other stationary sup-
A-5 A-5 INSTALLATION SP-175 PLUS 3. Attach the flow regulator to the cylinder valve and tighten the union nut securely with a wrench. Theflow regulator for carbon dioxide must have a plas- tic washer seated in the fitting that attaches to thecylinder to prevent leakage. Refer to K1800-1 inthe access...
Page 13 - Line Cord Connection
A-6 A-6 INSTALLATION Line Cord Connection A 3 conductor line cord with a 50 amp, 250 volt, three-prong plug (NEMA Type 6-50P) is factory installed.Connect this plug to a mating grounded receptaclewhich is connected to an appropriate power supplyper the U.S. National Electric Code and any applicablel...
Page 14 - OPERATION
B-1 SP-175 PLUS B-1 OPERATION Read entire Operation section beforeoperating the SP-175 Plus. ELECTRIC SHOCK can kill. • Do not touch electrically live parts or electrode with skin orwet clothing. Insulate yourselffrom work and ground. • Always wear dry insulating gloves. FUMES AND GASES can bedanger...
Page 15 - GENERAL DESCRIPTION; RECOMMENDED PROCESSES; WELDING CAPABILITY; P o w e r O N / O F F S w i t c h —
B-2 B-2 OPERATION GENERAL DESCRIPTION The SP-175 Plus is a complete semiautomatic constant volt-age DC arc welding machine. Included is a continuous con-trolled, single phase constant voltage transformer/rectifierpower source and a wire feeder with welding gun for feeding.023” (0.6 mm) through .035”...
Page 16 - WELDING OPERATIONS; SEQUENCE OF OPERATION; Wire Loading; When loading and removing the 8” Spools make; Circuit Breaker – Protects machine from damage if
WELDING OPERATIONS SEQUENCE OF OPERATION Wire Loading Refer to Figure B.2 and B.3.The machine power switch should be turned to theOFF (“O”) position before working inside the wire feedenclosure. The machine is shipped from the factory ready to feed8” (200 mm) diameter spools [2.2” (56 mm) max.width]...
Page 17 - Friction Brake Adjustments
B-4 SP-175 PLUS B-4 OPERATION Note: The brake should be adjusted with a spool ofwire installed. When properly adjusted it shouldmove freely but not coast. Friction Brake Adjustments 1. With wire spool installed, check free movement and coast of the spool. 2. To tighten the brake turn the wing nut cl...
Page 18 - Shielding Gas
B-5 B-5 OPERATION Shielding Gas When using the GMAW process, a cylinder of shield-i n g g a s , m u s t b e o b t a i n e d . R e f e r t o t h e A C C E S -SORIES section for more information about selectinggas cylinders for use with the SP-175 Plus. Be sure to observe all cylinder handling and use...
Page 19 - To stop welding, release the gun trigger and then; Cleaning Tip And Nozzle; PROCESS GUIDELINES; is recommended for weld-; TABLE B.1 — SP-175 Plus Welding Procedures
B-6 B-6 OPERATION 9. To stop welding, release the gun trigger and then pull the gun away from the work after the arc goesout. 10. When no more welding is to be done, close valve on gas cylinder (if used), momentarily operate guntrigger to release gas pressure, and turn off theSP-175 Plus. Cleaning T...
Page 20 - OVERLOAD PROTECTION; Output Overload
SP-175 PLUS B-7 OPERATION OVERLOAD PROTECTION Output Overload The SP-175 Plus is equipped with a circuit breakerwhich protects the machine from potential damagefrom excessive output current. The circuit breaker but-ton will extend out when tripped. The circuit breakermust be manually reset. Thermal ...
Page 21 - LEARNING TO WELD; THE ARC-WELDING CIRCUIT; • Avoid contact with eyes and skin.
B-8 B-8 LEARNING TO WELD LEARNING TO WELD No one can learn to weld simply by reading about it.Skill comes only with practice. The following pages willhelp the inexperienced operator to understand weld-ing and develop this skill. For more detailed informa-tion, order a copy of “New Lessons in Arc Wel...
Page 22 - PROCESS SELECTION; Is most of my welding performed on 16 gauge and
B-9 SP-175 PLUS B-9 LEARNING TO WELD The “arc stream” is seen in the middle of the picture.This is the electric arc created by the electric currentflowing through the space between the end of the wireelectrode and the base metal. The temperature of thisarc is about 6000°F, which is more than enough ...
Page 23 - Will welding be performed outdoors or under windy; COMMON METALS; Butt Welds
B-10 SP-125 PLUS B-10 LEARNING TO WELD 2. Can I afford the extra expense, space, and lack of portability required for gas cylinders and gas sup-ply? 3. Do I require clean, finished-looking welds? If you have answered yes to all the above questionsG M A W m a y b e t h e p r o c e s s f o r y o u . I...
Page 24 - Penetration; Welding In The Vertical Position; Vertical-up And Overhead Welding
B-11 SP-175 PLUS B-11 LEARNING TO WELD FIGURE B.12 Penetration Unless a weld penetrates close to 100% of the metalthickness, a butt weld will be weaker than the materialwelded together. In the example shown in FigureB.13, the total weld is only half the thickness of thematerial thus the weld is only...
Page 25 - Vertical-down Welding; See PROCESS GUIDELINES in the OPERATION; The Correct Welding Position
B-12 SP-175 PLUS B-12 LEARNING TO WELD FIGURE B.16 Vertical-down Welding Refer to Figure B.17 Vertical-down welds are appliedat a fast pace. These welds are therefore shallow andnarrow and, as such, are excellent for sheet metal.Vertical-down welds may be applied to 5/32” (3.9 mm)and lighter materia...
Page 26 - ARC RAYS can burn eyes and skin.; The Correct Welding Speed
B-13 SP-175 PLUS B-13 LEARNING TO WELD ARC RAYS can burn eyes and skin. When using an open arc process, itIs necessary to use correct eye,head and body protection. Protect yourself and others, read“ARC RAYS can burn” at the frontof this manual. 2. The Correct Way To Strike An Arc 1. Be sure the work...
Page 27 - Mild Steel; Helpful Hints
B-14 SP-125 PLUS B-14 LEARNING TO WELD Mild Steel 16 gauge or 1/16 inch (1.6 mm) Electrode 0.035" (0.9 mm) NR-211-MP Innershield Wire Voltage Setting “V” B Wire Feed Speed “o|o” 2 For the SP-175 Plus , use the following: Helpful Hints 1. For general welding, it is not necessary to weave the arc,...
Page 30 - TROUBLESHOOTING WELDS; To Eliminate Porosity
B-17 B-17 LEARNING TO WELD 4. After you strike the arc, practice the correct electri- cal stickout. Learn to distinguish it by its sound. 5. When you are sure that you can hold the correct electrical stickout, with a smooth “crackling” arc,start moving. Look at the molten puddle constantly. 6. Run b...
Page 31 - Proper Gun Handling
B-18 SP-125 PLUS B-18 LEARNING TO WELD Proper Gun Handling Most feeding problems are caused by improper han-dling of the gun cable or electrodes. 1. Do not kink or pull the gun around sharp corners 2. Keep the gun cable as straight as practical when welding. 3. Do not allow dolly wheels or trucks to...
Page 32 - APPLICATION CHART
Page 33 - ACCESSORIES; Includes spot; OPTIONAL ACCESSORIES; Designed to transport the; Adjustable Regulator and Hose Kit —; Accommodates CO; K 6 6 3 - 2 A l u m i n u m W e l d i n g K i t; — T h i s k i t
C-1 C-1 SP-175 PLUS ACCESSORIES 6. K695-2 Spot / Stitch Timer Kit — Includes spot timer to control the spot welding arc time, and astitch timer to control the on/off cycle time of thearc to prevent burnthrough on thin gauge metals.Also includes spot welding nozzle. The Spot/Stitch Timer Kit installs...
Page 34 - Cable Installation” section for details.; REPLACEMENT PARTS; Complete Gun and Cable Assembly
C-2 C-2 ACCESSORIES INNERSHIELD (FCAW)CONVERSION Several changes are needed to convert the unit foroperation with the Innershield (FCAW) process. TheInnershield Kits include all the necessary accessoriesfor this conversion and are provided for this purpose.The following conversions should be made us...
Page 35 - BEFORE EACH USE; MAINTENANCE; PERIODICALLY AS REQUIRED
MAINTENANCE SAFETY PRECAUTIONS ELECTRIC SHOCK can kill. • Disconnect input power by remov- ing plug from receptacle beforeworking inside SP-175 Plus . Useonly grounded receptacle. Do nottouch electrically “hot” partsinside SP-175 Plus . • Have qualified personnel do the maintenance and trouble shoot...
Page 36 - Gun Cable Cleaning
D-2 SP-175 PLUS D-2 MAINTENANCE GUN AND CABLE MAINTENANCE FOR MAGNUM™ 100L GUN Gun Cable Cleaning Clean cable liner after using approximately 300 lbs(136 kg) of solid wire or 50 lbs (23 kg) of flux-coredwire. Remove the cable from the wire feeder and lay itout straight on the floor. Remove the conta...
Page 37 - CHANGING THE CONTACT TIP
D-3 D-3 MAINTENANCE COMPONENT REPLACEMENT PROCEDURES CHANGING THE CONTACT TIP 1. Unplug or turn power switch to Off “O” position. 2. Refer to Figure D.2. Remove the gas nozzle from the gun by unscrewing counter-clockwise. 3. Remove the existing contact tip from the gun by unscrewing counter-clockwis...
Page 38 - CHANGING LINER; Liner trim length
D-4 SP-175 PLUS D-4 MAINTENANCE CHANGING LINER NOTICE: The variation in cable lengths prevents theinterchangeability of liners. Once a liner has beencut for a particular gun, it should not be installed ina n o t h e r g u n u n l e s s i t c a n m e e t t h e l i n e r c u t o f flength requirement....
Page 39 - GUN HANDLE PARTS
D-5 SP-125 PLUS D-5 MAINTENANCE GUN HANDLE PARTS The gun handle consists of two halves that are heldtogether with a collar on each end. To open up thehandle, turn the collars approximately 60 degreescounter-clockwise until the collar reaches a stop. Thenpull the collar off the gun handle. If the col...
Page 40 - TROUBLESHOOTING; LOCAL AUTHORIZED LINCOLN ELECTRIC; for assistance before you proceed.; Step 3. RECOMMENDED COURSE OF ACTION; HOW TO USE TROUBLESHOOTING GUIDE
E-1 SP-175 PLUS E-1 TROUBLESHOOTING If for any reason you do not understand the test procedures or are unable to Performthe tests/repairs safely, contact your LOCAL AUTHORIZED LINCOLN ELECTRIC FIELD SERVICE FACILITY for assistance before you proceed. _________________________________________________...
Page 41 - OUTPUT PROBLEMS; LOCAL AUTHORIZED LINCOLN ELECTRIC FIELD SERVICE FACILITY
E-2 SP-175 PLUS E-2 TROUBLESHOOTING PROBLEMS(SYMPTOMS) Major physical or electrical damageis evident. No wire feed, weld output or gasflow when gun trigger is pulled. Fandoes NOT operate. No weld output or wire feed whengun trigger is pulled. Fan runs andgas flows normally. No weld output when gun t...
Page 42 - FEEDING PROBLEMS
E-3 SP-175 PLUS E-3 TROUBLESHOOTING If for any reason you do not understand the test procedures or are unable to Perform the tests/repairs safely, contact your LOCAL AUTHORIZED LINCOLN ELECTRIC FIELD SERVICE FACILITY for assistance before you proceed. CAUTION PROBLEMS(SYMPTOMS) No wire feed when gun...
Page 43 - WELDING PROBLEMS
E-4 SP-125 PLUS E-4 TROUBLESHOOTING Observe Safety Guidelines detailed in the beginning of 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 AUTHORIZED LINCOLN ELECTRIC FIELD SERVICE FACILITY for assistance ...
Page 44 - WIRING DIAGRAMS; SP-175 Plus
F-1 SP-175 PLUS F-1 WIRING DIAGRAMS M19060 L1 L2 31 H2 202 201 D5 D7 D2 D8 204 204 203 203 203 204 - + OUTPUT CHOKE TO WORK ELECTRICAL SYMBOLS PER E1537 CIRCUIT BREAKER 31A 12 3 45 6 LATCH FAN MOTOR 1 234 LATCH 5 6 789 1 0 J1 J2 CAVITY NUMBERING SEQUENCE 12 3 4 56 123 4 5 6 7 89 1 0 7 32A CONTROL P....
Page 45 - NOTES
Page 46 - 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. T h i s p r i n t i n g w i l l g o f a s t s o d o n ʼ t d e l a y . P l ...
