Lincoln Electric IDEALARC IM402-B manual

IDEALARC ® A C/DC 250 OPERA TOR’S MANUAL For use with machines having Code Number 9491 thru 11104. IM402-B August, 2007 Safety Depends on You Lincoln arc welding and cutting equipment is designed and built with safety in mind. However, your overall safety can be increased by proper installation ... and thought- ful operation on your part. DO NOT[...]

FOR ENGINE powered 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. ________________________________________________[...]

ii SAFETY ii ARC RA YS can burn. 4.a. Use a shield with the proper filter and cover plates to protect your eyes from sparks and the rays of the arc when welding or observing open arc welding. Headshield and filter lens should conform to ANSI Z87. I standards. 4. b. Use suitable clothing made from durable flame-resistant material to protect your ski[...]

iii SAFETY iii FOR ELECTRICALL Y powered equipment. 8.a. Turn off input power using the disconnect switch at the fuse box before working on the equipment. 8 . b. Install equipment in accordance with the U.S. National Electrical Code, all local codes and the manufacturerʼs recommendations. 8.c. Ground the equipment in accordance with the U.S. Natio[...]

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 secousse électrique: a. Les circuits à[...]

– 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 manual and keep it handy for quick refe[...]

– 7 – T ABLE OF CONTENTS Page GENERAL DESCRIPTION ..................................................................................................8 RECOMMENDED PROCESSES & EQUIPMENT ...............................................................8 AC and DC Constant Current Welding ..........................................................[...]

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

– 9 – TECHNICAL SPECIFICA TIONS: IDEALARC AC/DC 250 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 35-250 40-250 Max. O.C.V. 72 70 72 70 Input Power Standard Voltages 208/230/460 [...]

– 10 – INST ALLA TION Safety Precautions • Connect the Idealarc 250 grounding terminal located under the reconnect panel (marked ) to a good electrical ground per the U.S. National Electrical Code and any applicable local codes. • Turn the power switch on the Idealarc 250 “OFF” before connecting or disconnecting output cables or other e[...]

– 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 of the unit being stacked on top are over the two holes located on the top front corners of the unit being stacked on. Fasten the units together wit[...]

OPERA TION Safety Precautions Be sure the Idealarc 250 is properly installed, and that all accessories are properly hooked up before attempting operation. DUTY CYCLE This machine is rated at a 30% duty cycle at 250 amps or 50% duty cycle at 200 amp output. Duty cycle is based on a 10 minute period. Therefore, the welder can be loaded at 200 amperes[...]

MAINTENANCE Safety Precautions General Maintenance 1 . The fan motor has sealed ball bearings which requires no service. 2. In dusty locations dirt may clog the air channels causing the welder to run hot. Under these conditions carefully blow out the welder at regular intervals. 3 . Keep the electrode and work cable connection tight. 4. Every twelv[...]

– 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 switch not centered. 1. Proper ventilation[...]

– 15 – TROUBLE C. Variable or sluggish welding. D. Welder wonʼt shut off. E. Polarity switch wonʼt turn. CAUSE 1. Poor work or electrode terminal connection. 2. Current too low. 3. Low line voltage. 4. Welding leads too small. 5. Old and badly frayed welding cables. 1. Line switch has failed mechanically. 1. Contacts rough and pitted from imp[...]

– 16 – NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The specific diagram 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. Give the equipment code number.. H1 L1 L2 TO GROU[...]

– 17 – NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The specific diagram 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. Give the equipment code number.. H1 L1 L2 TO GROU[...]

NOTES[...]

W ARNING AV I S O D E PRECAUCION A TTENTION W ARNUNG A TENÇÃO Spanish French German Portuguese Japanese Chinese Korean Arabic READ AND UNDERST AND THE MANUFACTURER’S INSTRUCTION FOR THIS EQUIPMENT AND THE CONSUMABLES TO BE USED AND FOLLOW YOUR EMPLOYER’S SAFETY PRACTICES. SE RECOMIENDA LEER Y ENTENDER LAS INSTRUCCIONES DEL F ABRICANTE P ARA E[...]

W ARNING AV I S O D E PRECAUCION A TTENTION W ARNUNG A TENÇÃO Spanish French German Portuguese Japanese Chinese Korean Arabic LEIA E COMPREENDA AS INSTRUÇÕES DO F ABRICANTE P ARA ESTE EQUIP AMENTO E AS P ARTES DE USO, E SIGA AS PRÁTICAS DE SEGURANÇA DO EMPREGADOR. ● Keep your head out of fumes. ● Use ventilation or exhaust to remove fumes[...]

• Sales and Service through Subsidiaries and Distributors Worldwide • Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com • World's Leader in Welding and Cutting Products •[...]