Lincoln Electric IM402-B - Manuals

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 fumesoutdoors. ...

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; WELDING and CUTTING

iii SAFETY 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 manufacturerʼsrecommendations. 8.c. Ground the ...

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 LʼArc 1. Protegez-vous contre la seco...

Page 6 - Thank You; Please Examine Carton and Equipment For Damage Immediately

– 6 – 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 ...

Page 7 - TABLE OF CONTENTS

– 7 – TABLE OF CONTENTS Page GENERAL DESCRIPTION ..................................................................................................8 RECOMMENDED PROCESSES & EQUIPMENT ...............................................................8 AC and DC Constant Current Welding ................

Page 8 - GENERAL DESCRIPTION; AC and DC Constant Current Welding; DESIGN FEATURES; Factory Installed Options/Accessories; Duty Cycle

– 8 – GENERAL DESCRIPTION The Idealarc ® 250 is a single phase constant current arc welding power source available in an AC/DCmodel only. Designed for stick welding, it may also beused for TIG welding when used with the K799 Hi-Freq unit. RECOMMENDED PROCESSES ANDEQUIPMENT AC and DC Constant Current...

Page 9 - T E C H N I C A L S P E C I F I C AT I O N S : I D E A L A R C A C / D C 2 5 0; AC DC; INPUT - OUTPUT RATINGS

– 9 – T E C H N I C A L S P E C I F I C AT I O N S : I D E A L A R C A C / D C 2 5 0 Model AC/DC 250 AC/DC 250 Type K1053 K1054 AC Input Frequency 60 50 Output Rating NEMA CLASS II (60) IEC 974 AC DC AC DC Amperes 300 250 250 250 Volts 32 30 30 30 Duty Cycle 20 30 30 30 Current Range 35-300 40-250 3...

Page 10 - INSTALLATION; Safety Precautions; • Connect the Idealarc 250 grounding terminal located; See additional warning information at the; Location

– 10 – INSTALLATION Safety Precautions • Connect the Idealarc 250 grounding terminal located under the reconnect panel (marked ) to a goodelectrical ground per the U.S. National ElectricalCode and any applicable local codes. • Turn the power switch on the Idealarc 250 “OFF” before connecting or disc...

Page 11 - STACKING; A. Make sure the first or bottom unit is setting on a; Installation of Field Installed Options; CABLE SIZES FOR COMBINED LENGTHS OF; FALLING EQUIPMENT; can cause; Tu r n t h e p o w e r s w i t c h o f t h e; O F F; before connecting or disconnect-

– 11 – STACKING A. Make sure the first or bottom unit is setting on a level, well supported surface. B. The units must be stacked with their front flush, making sure the two holes in the base rails ofthe unit being stacked on top are over the twoholes located on the top front corners of the unitbein...

Page 12 - OPERATION; A. Current Control Handle

OPERATION Safety Precautions Be sure the Idealarc 250 is properly installed, and thata l l a c c e s s o r i e s a r e p r o p e r l y h o o k e d u p b e f o r eattempting operation. DUTY CYCLE This machine is rated at a 30% duty cycle at 250amps or 50% duty cycle at 200 amp output. Dutycycle is ba...

Page 14 - TROUBLESHOOTING

– 14 – TROUBLE A. Welder will not weld. B. Welder welds, but soon stops welding (DC only). CAUSE 1. Line switch not turned “On”. Supply line fuse blown. 2. Power circuit dead. 3. Broken power lead. 4. Wrong voltage. 5. Electrode or work lead loose or broken. 6. Open transformer circuit. 7. Polarity ...

Page 17 - WIRING DIAGRAM - 250 AMP IDEALARC 50 HZ

– 17 – 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 Department for a replacement. G ...

Page 18 - NOTES