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F-7

TROUBLESHOOTING AND REPAIR

F-7

Observe all Safety Guidelines detailed throughout this manual.

PROBLEMS

POSSIBLE AREAS OF

RECOMMENDED

(SYMPTOMS)

MISADJUSTMENT(S)

COURSE OF ACTION

 

 

 

FUNCTION PROBLEMS (Continued)

 

 

 

The wire feed speed does not

1. The “run-in” and “weld” wire1. Check the current sensing reed

change when welding current is

feed speeds may be set at the

switch for proper operation.

established.

same value.

 

 

 

A. While not welding the volt-

 

2. Check the current sensing reed

age at pins 3J1 to 4J1

 

switch leads and connectors for

should be approximately 12

 

loose or faulty corrections. See

VDC. The reed switch

 

the Wiring Diagram.

should be open. If the 12

 

 

VDC is missing either the

 

 

reed switch is stuck closed

 

 

or the control board is defec-

 

 

tive.

 

 

B. While welding current is

 

 

flowing the voltage at pins

 

 

3J1 to 4J1 should be

 

 

approximately 0 VDC. The

 

 

reed switch should be

 

 

closed. If the voltage is not

 

 

at or near 0 VDC, the reed

 

 

switch is faulty.

 

 

2. The control board may be

 

 

faulty.

 

 

 

The voltmeter does not function

1. Make sure the dip switch set-

1. The control board may be

properly. The welding may vary

tings on the control board are

faulty.

from normal performance. The wire

correct for the power source

 

feeds properly.

being used. See Welding

2. The display board may be

 

Power Source Selection.

defective.

 

2. Make sure the voltage sense

 

 

leads are connected.

 

 

A. Lead #67 has continuity

 

 

(zero ohms) to the electrode.

 

 

B. Lead #21 has continuity

 

 

(zero ohms) to the work

 

 

piece.

 

 

 

 

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 1-800-833-9353.

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Lincoln Electric SVM154-A service manual Power Source Selection

SVM154-A specifications

The Lincoln Electric SVM154-A is a powerful and versatile inverter-based welding machine designed for a wide range of applications. As a part of Lincoln Electric's esteemed portfolio, this model is particularly favored for its robust performance and cutting-edge technologies, making it ideal for both professional fabricators and hobbyists alike.

One of the standout features of the SVM154-A is its compact and lightweight design, which enhances portability without compromising power. Weighing significantly less than traditional welding machines, it allows welders to easily transport the equipment to various job sites. This feature is particularly beneficial in industries where mobility is essential.

Equipped with advanced inverter technology, the SVM154-A delivers a stable and smooth arc, providing consistent welding performance even in challenging conditions. The inverter design also contributes to energy efficiency, allowing users to save on operational costs while enjoying superior performance. The machine supports both MIG and TIG welding processes, which adds to its versatility. This adaptability makes it suitable for a range of materials including mild steel, stainless steel, and aluminum.

Another notable characteristic is its user-friendly interface. Designed with the welder in mind, the SVM154-A includes intuitive controls that simplify settings adjustments and operational processes. This ergonomic layout allows for ease of use, even for beginners, while still offering the adjustments that experienced welders appreciate for customizing their welds.

The SVM154-A also includes several safety features, such as thermal overload protection and a dynamic power control, ensuring safe operation while maintaining high productivity. Users benefit from features that protect both the machine and the operator, making it a reliable choice for long hours of work.

Moreover, Lincoln Electric's commitment to durability is evident in the SVM154-A's construction. Built with high-quality materials, this welding machine is designed to withstand the rigors of daily use, ensuring longevity and reliability over time.

In summary, the Lincoln Electric SVM154-A stands out for its portability, versatility, and user-centric design. With advanced inverter technology that promotes energy efficiency and a stability for various welding processes, it serves as a valuable tool for both professionals and hobbyists seeking to achieve high-quality welds across different applications. Its combination of advanced features, safety mechanisms, and rugged durability positions the SVM154-A as a top choice in the welding equipment market.