Manuals / Lincoln Electric / Power Tools / Welder

Lincoln Electric 11521 service manual Tachometer Feedback Test

Models: 11521

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F-8

TROUBLESHOOTING AND REPAIR

F-8

 

 

 

 

 

 

Observe Safety Guidelines detailed in the beginning of this manual.

 

 

 

 

 

 

 

 

PROBLEMS

POSSIBLE AREAS OF

RECOMMENDED

 

 

(SYMPTOMS)

MISADJUSTMENT(S)

COURSE OF ACTION

 

 

 

 

 

 

 

 

WIRE FEEDING PROBLEMS

 

 

Rough wire feeding or the wire will

1. The gun cable may be kinked or

 

 

not feed but the drive rolls are turn-

twisted.

 

 

ing.

 

 

 

 

 

 

2. Check the drive roll tension and

 

 

 

 

the position of the grooves.

 

 

 

 

3. Electrode may be rusted or dirty.

 

 

 

 

4. The contact tip may be damaged

 

 

 

 

or not the correct size.

 

 

 

 

5. Check the wire spindle for ease of

 

 

 

 

rotation.

 

 

 

 

6. Make certain the gun is pushed

 

 

 

 

all the way into the gun mount

 

 

 

 

and properly seated.

 

 

 

 

 

No control of wire feed speed.

1. The wire feed speed control may

1. The wire speed control potentiome-

Other machine functions are nor-

be dirty. Rotate several times and

ter may be faulty. Check or replace.

mal.

 

check if the problem is resolved.

Normal potentiometer resistance is

 

 

 

10K ohms.

 

 

 

 

2. Perform the Wire Drive Motor and

 

 

 

Tachometer Feedback Test.

 

 

 

 

3. The control board may be faulty.

 

 

 

 

There is no wire feed when the gun

1. Check for adequate wire supply.

1. Perform the Wire Drive Motor and

trigger is activated. Normal open

 

Tachometer Feedback Test.

 

circuit weld voltage is present and

2. If the drive rolls are turning, check

 

 

the gas solenoid functions normal-

for a mechanical restriction in the

2. The wire speed control potentiome-

ly.

 

wire feed path.

ter may be faulty. Check or replace.

 

 

 

Normal potentiometer resistance is

 

 

3. The gun liner may be clogged.

10K ohms.

 

 

 

Check or replace.

 

 

 

 

 

3. The control board may be faulty.

 

 

 

4. If the drive rolls are not turning

 

 

 

 

when the gun trigger is activated,

 

 

 

 

contact your local Lincoln Electric

 

 

 

 

Authorized Field Service Facility.

 

 

 

 

 

 

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-888-935-3877.

Power MIG® 215XT

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Lincoln Electric 11521 service manual Tachometer Feedback Test
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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.