Figure B.2b

B-6

OPERATION

B-6

 

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5.Loosen the socket head cap screw that holds the connector bar against the gun bushing.

Important: Do not attempt to completely remove the socket head cap screw.

6.Remove the outer wire guide, and push the gun bushing out of the wire drive. Because of the pre- cision fit, light tapping may be required to remove the gun bushing.

7.Disconnect the shielding gas hose from the gun bushing, if required.

8.Connect the shielding gas hose to the new gun bushing, if required.

9.Rotate the gun bushing until the thumb screw hole aligns with the thumb screw hole in the feed plate. Slide the gun receiver bushing into the wire drive and verify the thumb screw holes are aligned.

10.Tighten the socket head cap screw.

11.Insert the welding gun into the gun bushing and tighten the thumb screw.

MAKING A WELD

1.Check that the electrode polarity is correct for the process being used, then turn the power switch ON.

2.Set desired arc voltage tap and wire speed for the

particular electrode wire, material type and thick- ness, and gas (for MIG and Outershield®) being used. Use the Application Chart on the door inside the wire compartment as a quick reference for some common welding procedures.

3.Press the trigger to feed the wire electrode through the gun and cable. For solid wire cut the electrode

within approximately 3/8" (10 mm) of the end of the contact tip [3/4" (20 mm) for Outershield®].

4.When welding with gas, turn on the gas supply and set the required flow rate (typically 25-35 CFH; 12- 16 liters/min).

5.Connect work cable to metal to be welded. Work clamp must make good electrical contact to the work. The work must also be grounded as stated in “Arc Welding Safety Precautions”.

WARNING

•When using an open arc process, it is necessary to use correct eye,

head, and body protection.

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6.Position electrode over joint. End of electrode may be lightly touching the work.

7.Lower welding helmet, close gun trigger, and begin welding. Hold the gun so the contact tip to work dis-

tance is about 3/8" (10 mm) [3/4" (20 mm) for Outershield®].

8.To stop welding, release the gun trigger and then pull the gun away from the work after the arc goes out.

THUMB SCREW

GUN RECEIVER BUSHING

OUTER WIRE GUIDE

CONNECTOR BLOCK

SOCKET HEAD

CAP SCREW

LOOSEN TIGHTEN

Power MIG® 215XT

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Lincoln Electric 11521 service manual Making a Weld, Return to Return to Section TOC
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11521 specifications

The Lincoln Electric 11521 is a highly regarded choice among welders and metal fabricators, known for its reliability and efficiency. This portable MIG welder excels in delivering professional-grade results, making it suitable for both beginners and experienced welders. One of the standout features of the Lincoln Electric 11521 is its user-friendly design, which facilitates ease of use and enhances the overall welding experience.

Equipped with a powerful 180 amp output, the Lincoln Electric 11521 is capable of tackling a wide range of welding applications. It operates on a standard 230-volt outlet, allowing users to work on various materials, including mild steel, stainless steel, and aluminum, with thicknesses up to 5/16 inch. This versatility is crucial for those who handle different types of projects, from automotive repairs to home improvement tasks.

The welder employs a spool gun for welding aluminum, ensuring a smooth and efficient feeding of the wire. This technology mitigates the problems commonly associated with feeding aluminum wire through a regular gun, providing a seamless experience. Additionally, the Lincoln Electric 11521 features an adjustable welding speed and voltage, enabling users to fine-tune their settings to match the specific requirements of each project. This adaptability leads to better penetration, bead shape, and overall weld quality.

Another important aspect of the Lincoln Electric 11521 is its durability. Constructed with high-quality materials, this welder is designed for tough jobs and can withstand the wear and tear associated with heavy use. The unit's compact size and lightweight design further enhance its practicality, making it easy to transport between job sites or store when not in use.

Safety is a crucial element in welding, and the Lincoln Electric 11521 does not compromise on this aspect. It features a thermal overload protection system, which prevents damage to the machine by shutting it down in case of overheating. The welder also includes a gas-saving mode that intelligently reduces the gas flow during idle times, maximizing efficiency.

In summary, the Lincoln Electric 11521 is a versatile and reliable MIG welder that caters to a wide range of welding needs. With its powerful output, user-friendly features, advanced technologies, and robust safety mechanisms, it is an excellent investment for professionals and hobbyists alike looking to achieve high-quality welds with ease.
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