Page 2 - SAFETY; WARNING; CALIFORNIA PROPOSITION 65 WARNINGS; The Above For Diesel Engines
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
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
v v 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...
Page 7 - TABLE OF CONTENTS; Page; Safety
vi vi TABLE OF CONTENTS Page Safety .....................................................................................................................i-iv Installation ......................................................................................................Section A Technical Specifi...
Page 8 - INSTALLATION; INPUT- THREE PHASE ONLY; Peak Current; PHYSICAL DIMENSIONS
INVERTEC STT II (CE) A-1 INSTALLATION A-1 STANDARD VOLTAGE INPUT CURRENT AT RATED OUTPUT 200/220/380/415/440/3/50/60 HZ 33/30/18/17/16 TECHNICAL SPECIFICATIONS –INVERTEC STT II (CE) (For Code 11366) INPUT- THREE PHASE ONLY RATED OUTPUT RECOMMENDED INPUT WIRE AND FUSE SIZES I NPUT VOLTAGE FUSE(SUPER ...
Page 9 - 8 VDC Maximum
A-2 INSTALLATION A-2 INVERTEC STT II (CE) STANDARD VOLTAGE INPUT CURRENT AT RATED OUTPUT 200/208/380/400/415/3/50/60 HZ 36/34/20/19/18 TECHNICAL SPECIFICATIONS –INVERTEC STT II (CE) (For Code 11367) INPUT- THREE PHASE ONLY RATED OUTPUT RECOMMENDED INPUT WIRE AND FUSE SIZES I NPUT VOLTAGE FUSE(SUPER ...
Page 10 - ELECTRIC SHOCK can kill.; SUPPLY CONNECTIONS; SELECT SUITABLE LOCATION; STACKING
A-3 INSTALLATION A-3 INVERTEC STT II (CE) ELECTRIC SHOCK can kill. • Only qualified personnel should perform this installation. • Turn the input power OFF at the disconnect switch or fuse box before installing this equipment. • Turn the power switch on the Invertec STT “OFF” before connecting or dis...
Page 11 - Remove the wraparound cover of the; GROUND CONNECTION; Replace the wraparound cover of the; CASE BACK
A-4 INSTALLATION A-4 INVERTEC STT II (CE) INPUT CABLE INSTALLATION AND CON-NECTION A cable strain relief is provided at the supply line entryand is designed to accommodate cable diameters of.310 - 1.070 in. (7.9 - 27.2 mm). On European modelsthe strain relief is designed to accommodate cablediameter...
Page 12 - FIGURE A.2 RECONNECT PANEL; verify; the; To Operate at; OUTPUT CONNECTIONS; WIRE FEEDER OUTPUT CONNECTIONS
A-5 INSTALLATION A-5 INVERTEC STT II (CE) FIGURE A.2 RECONNECT PANEL INPUT VOLTAGE RECONNECTPROCEDURE A s s h i p p e d f r o m t h e f a c t o r y , m u l t i p l e v o l t a g emachines are internally configured for the highestinput voltage (440-460 VAC), for Code 11366 and(380-415 VAC), for Code ...
Page 13 - OPERATION; Keep your head out of fumes.; OPERATING INSTRUCTIONS; GENERAL WARNINGS; SAFETY PRECAUTIONS
B-1 OPERATION B-1 INVERTEC STT II (CE) ELECTRIC SHOCKcan kill. • Do not touch electrically live partsor electrode with skin or wetclothing. • Insulate yourself from work andground. • Always wear dry insulating gloves. FUMES AND GASEScan be dangerous. • Keep your head out of fumes. • Use ventilation ...
Page 14 - GENERAL DESCRIPTION; RECOMMENDED EQUIPMENT
B-2 OPERATION B-2 INVERTEC STT II (CE) GENERAL DESCRIPTION The INVERTEC STT II (CE) is a 225-ampere inverterbased arc welding power source specifically designedfor the STT welding process. It is neither a constantcurrent (CC) nor a constant voltage (CV) machine. Itis a power source that delivers cur...
Page 15 - OPERATIONAL FEATURES AND CONTROLS; FIGURE B.1 CASE FRONT CONTROLS
B-3 OPERATION B-3 INVERTEC STT II (CE) 1. POWER SWITCH: Turns output power ON and OFF. This switcha l s o c o n t r o l s a u x i l i a r y p o w e ravailable through the 14-pin WireFeeder Receptacle. 2A. B A C K G R O U N D C U R R E N T O U T P U T C O N - TROL: The output current is switched toth...
Page 16 - WELDING OPERATION
B-4 OPERATION B-4 INVERTEC STT II (CE) 6. WIRE SIZE SELECT SWITCH: This toggle switch selects between electrode diameters of .035 ” (1 mm) and smaller or .045 ” (1.2 mm) and larger. The .035 ” (1 mm) position provides improved perfor- mance of smaller diameter wires at higher wire feedspeeds. 7. WIR...
Page 17 - TAILOUT
B-5 OPERATION B-5 INVERTEC STT II (CE) W E L D I N G PA R A M E T E R S A N D G U I D E -LINES The INVERTEC STT II (CE) is neither a constant cur-rent (CC) nor a constant voltage (CV) power source.In general, wire diameter will be increased one sizecompared to conventional (CV) power sources. Thelar...
Page 18 - WELDING PROCEDURES FOR STT II -; Gas Shield (Set for Stainless Steel Mode)
B-6 OPERATION B-6 INVERTEC STT II (CE) WELDING PROCEDURES FOR STT II - (Steel) Horizontal Fillet (See Table B.1 and B.2) Table B.1 100% CO 2 Gas Shield (Set for Steel Mode) Table B.2 75% CO 2 - 25% Ar Gas Shield (Set for Steel Mode) (Stainless Steel) Horizontal Fillet(See Table B.3 and B.4) Table B....
Page 19 - ACCESSORIES; OPTIONS / ACCESSORIES
C-1 ACCESSORIES C-1 INVERTEC STT II (CE) STT control board to accept PEAK and BACK-GROUND inputs on this connector rather than fromthe front panel controls. If this short is removed,the front panel controls will be active. By adding as w i t c h b e t w e e n p i n s “ J ” a n d “ B ” a “ LOCAL/REMO...
Page 20 - NOTE: For best welding performance make this
C-2 ACCESSORIES C-2 INVERTEC STT II (CE) L N - 7 4 2 o r S T T- 1 0 W I R E F E E D E RCONNECTION INSTRUCTIONS The LN-742 or STT-10 is the recommended wire feed-er for use with the INVERTEC STT II (CE). Refer tothe LN-742 or STT-10 Operator Manual for Wire FeedOperation. Refer to Figure C.2 or C.3 a...
Page 22 - MAINTENANCE; LOCATION OF INPUT FILTER CAPACITOR TERMINALS.
D-1 MAINTENANCE D-1 INVERTEC STT II (CE) WARNING Failure to follow this capacitordischarge procedure can resultin electric shock. INPUT FILTER CAPACITORDISCHARGE PROCEDURE 1. Turn off input power or disconnect input power lines. 2. Remove hex head screws from side and top of machine and remove wrap-...
Page 23 - PREVENTIVE MAINTENANCE
D-2 MAINTENANCE D-2 INVERTEC STT II (CE) PREVENTIVE MAINTENANCE 1. Perform the following preventive maintenance pro- cedures at least once every six months. It is goodpractice to keep a preventive maintenance record;a record tag attached to the machine works best. 2. Remove the machine wraparound co...
Page 24 - TROUBLESHOOTING; CAUTION; Look under the column labeled; HOW TO USE TROUBLESHOOTING GUIDE
E-1 TROUBLESHOOTING E-1 INVERTEC STT II (CE) If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact yourLocal Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed. CAUTION This Troublesho...
Page 25 - OUTPUT PROBLEMS
E-2 TROUBLESHOOTING E-2 INVERTEC STT II (CE) If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact yourLocal Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed. CAUTION Observe Safety ...
Page 30 - DIAGRAMS
F-1 DIAGRAMS F-1 INVERTEC STT II (CE) NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The specific diag ram for a particular code is pasted inside the machine on one of the enclosure panels. If the diagram is illegible, write to the Service D...
Page 33 - NOTES
Page 36 - ÇÃ
WARNING AVISO DE PRECAUCION ATTENTION WARNUNG ATEN ÇÃ O Spanish French German Portuguese Japanese Chinese Korean Arabic READ AND UNDERSTAND THE MANUFACTURER’S INSTRUCTION FOR THIS EQUIPMENT AND THE CONSUMABLES TO BEUSED AND FOLLOW YOUR EMPLOYER’S SAFETY PRACTICES. SE RECOMIENDA LEER Y ENTENDER LAS I...