Lincoln Electric SVM144-B Operation, Product Description, Welding Capability, Limitations

B-3 OPERATION B-3

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PRODUCT DESCRIPTION

The POWER MIG™ 255 is a complete semiautomatic constant voltage DC arc welding machine built to meet NEMA specifications. It combines a constant voltage power source and a constant speed wire feeder with a microcomputer-based controller to form a reliable high- performance welding system. A simple control scheme, consisting of continuous full range voltage and wire feed speed controls, provides versatility with ease of use and accuracy.

Other features include a 2 in. (51 mm) O.D. wire reel spindle with adjustable brake, an integral gas cylinder mounting undercarriage, an adjustable CO2 or Argon blend flow regulator with cylinder pressure gauge and inlet hose, a 12 ft (3.6 m) Magnum 250L GMAW gun and cable with fixed (flush) nozzle, a 10 ft (3.0 m) power cable with plug and mating receptacle, and a 10 ft (3.0 m) work cable with clamp.

An Optional Timer kit provides variable burnback con- trol, a spot function, a selectable 4-step trigger inter- lock and adjustable “Run In” for wire starting optimiza- tion. Also optional are a Spool Gun Adapter kit, a Dual Cylinder Mounting Kit and an Aluminum Feeding Kit for push feeding with standard built in feeder.

RECOMMENDED PROCESSES AND EQUIPMENT

The POWER MIG 255 is recommended for GMA welding processes using 10 to 44 lb (4.5 to 20 kg)

2in. (51 mm) I.D. spools or Readi-Reel®coils (with optional adapter) of 0.025 in. through 0.045 in. (0.6 to 1.2 mm) solid steel, 0.035 in. (0.9 mm)

stainless, 3/64 in. (1.2 mm) aluminum and 0.045 in. (1.2 mm) Outershield®; as well as 0.035 in. (0.9 mm) and 0.045 in. (1.2 mm) Innershield® self-shielding electrodes.

The POWER MIG is factory equipped to feed 0.035 in. (0.9 mm) electrodes and provides tip, guide, and drive rolls for 0.045 in. (1.2 mm) electrode. It also includes a 200A, 60% duty cycle (or 250A, 40% duty cycle) rated, 12 ft (3.6 m) GMAW gun and cable assembly equipped for these wire sizes. Use of GMAW processes requires a supply of shielding gas.

WELDING CAPABILITY

The POWER MIG 255 is rated at 250 amps @ 26 volts, at a 40% duty cycle based on a ten minute cycle time. It is capable of higher duty cycles at lower output cur- rents and capable of up to 300 Amps at lower duty cycles.

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LIMITATIONS

The POWER MIG 255 MAY NOT operate satisfactorily if powered with a portable or in-plant generating system.

POWER MIG 255