Lincoln Electric SVM125-A service manual Shunt Field Winding Test

Models: SVM125-A

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F-5

 

 

 

 

 

 

 

F-5

TROUBLESHOOTING & REPAIR

 

 

 

 

 

 

TROUBLESHOOTING GUIDE

 

 

Observe Safety Guidelines

 

detailed in the beginning of this manual.

 

 

 

 

 

 

PROBLEMS

POSSIBLE AREAS OF

RECOMMENDED

 

 

 

(SYMPTOMS)

MISADJUSTMENT(S)

COURSE OF ACTION

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTPUT PROBLEMS

 

 

 

 

 

 

 

 

The engine starts and runs at cor-

1. Check for loose, damaged or

1.

Check

the

Fine

Current

rect speed, but there is no, or very

missing brushes in the welding

 

Adjustment

rheostat

for

resis-

low, welder output voltage. The AC

generator.

 

tance

and

proper

operation.

auxiliary output voltage is normal.

2. Check the welding cables for

 

Normal resistance is 64 ohms.

 

 

Check

associated

wires for

 

loose or faulty connection.

 

 

 

loose

or

faulty connections.

 

 

 

 

 

 

See the Wiring Diagram.

 

 

 

 

2.

Perform the

Shunt

Field

 

 

 

Winding Test.

 

 

 

 

 

 

3. Check the continuity of the inter-

 

 

 

pole coils. They should show

 

 

 

continuity

from the positive

 

 

 

brusholders to the positive out-

 

 

 

put terminal and should NOT be

 

 

 

grounded

to

the

generator

 

 

 

frame.

 

 

 

 

 

 

 

 

4. Check the continuity of the

 

 

 

series coils. They should show

 

 

 

continuity

from the

negative

 

 

 

brusholders,

through

the

 

 

 

Current Range selector switch,

 

 

 

to the negative output terminal

 

 

 

and should NOT be grounded.

 

 

 

Also check the Selector Switch

 

 

 

for proper operation.

 

 

 

 

 

5. The main armature may be

 

 

 

faulty. Check for grounds and/

 

 

 

or shorts.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 216- 383-2531 or 1-800-833-9353.

CLASSIC II

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Lincoln Electric SVM125-A service manual Shunt Field Winding Test

SVM125-A specifications

The Lincoln Electric SVM125-A is a versatile and highly efficient welding machine that has gained significant recognition in the welding industry. Designed for both professionals and enthusiasts, this machine combines advanced technology with user-friendly features to deliver outstanding performance in a range of welding applications.

One of the standout features of the SVM125-A is its Inverter Technology. This cutting-edge technology allows for lightweight and compact design, making the machine highly portable. The inverter technology also provides a steady arc, which is crucial for achieving clean, high-quality welds. With a duty cycle of 125 amps at a 60% duty cycle, this welding machine can handle a variety of materials and thicknesses, from thin sheet metal to heavier structural components.

The SVM125-A supports multiple welding processes, including MIG, stick, and TIG welding. This versatility makes it an ideal choice for diverse welding tasks, whether you're working in a fabrication shop, doing repair work, or engaged in hobbyist projects. The machine features easy switch functionality, allowing users to quickly shift between welding processes without complicated setup.

Another notable characteristic is the machine's user-friendly interface. The intuitive control panel includes clear indicators and knobs that allow for easy adjustments of voltage and wire feed speed. This design is especially helpful for novice welders, providing them with the confidence to make adjustments as needed and ensuring optimal weld quality.

Safety is also a priority with the SVM125-A. The machine is equipped with thermal overload protection, which automatically shuts it down in case of overheating, preventing damage to the unit and ensuring operator safety. Additionally, the machine features a robust construction that emphasizes durability, making it suitable for demanding work environments.

Portability is enhanced through its lightweight design, and the built-in carrying handle makes it easy to transport from one job site to another. The SVM125-A is also compatible with a variety of welding accessories, further increasing its adaptability and functionality.

In conclusion, the Lincoln Electric SVM125-A stands out as a well-rounded welding machine that integrates advanced technology with user-friendly features. Its versatility in welding processes, robust design, and emphasis on safety and usability make it a valuable tool for welders at all skill levels. Whether for professional use or personal projects, the SVM125-A is a reliable choice that delivers exceptional performance and quality.