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F-50

TROUBLESHOOTING & REPAIR

F-50

 

 

 

CONTROL BOARD REPLACEMENT PROCEDURE (Continued)

FIGURE F.22. FRONT PANEL W/OUT COVER

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J5

J6

J7

J8

J4

Firing Board

REMOVAL PROCEDURE

1.Disconnect input power to the machine.

2.Using a 3/8” nut driver, remove screws and lower the front control panel to access the control board on the right side of control box while facing the machine. See Figure F.22.

3.Disconnect plugs J2, J1, and J3 from the control board.

4.Remove the four phillips head screws and associated washers from the corners of the control board. See Figure F.23.

J2

J1

J3

Control Board

5. Carefully remove the control board.

REPLACEMENT PROCEDURE

1.Replace the control board.

2.Mount the control board to the machine in its proper position using the four phillips head screws and associated washers pre- viously removed.

3.Reconnect plugs J3, J1, and J2 to the con- trol board.

4.Replace the four screws previously removed from the front control panel.

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FIGURE F.23. MOUNTING SCREW LOCATIONS

MOUNTING SCREWS

J2

J1

J3

Control Board

MULTI-SOURCE

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Image 78
Lincoln Electric SVM155-A service manual Control Board

SVM155-A specifications

The Lincoln Electric SVM155-A is a state-of-the-art welding machine that excels in versatility and performance, making it ideal for both professional welders and hobbyists. This multi-process welder supports MIG, TIG, and stick welding processes, allowing users to tackle a wide range of applications with a single device. Its user-friendly design and advanced technology make it an exceptional choice for those looking to enhance their welding capabilities.

One of the main features of the SVM155-A is its robust power output, which can handle welding materials ranging from thin sheets to heavier stock. The welder offers a high duty cycle, ensuring that users can work efficiently without the need for prolonged breaks. This is especially important in industrial settings where productivity is key. Additionally, the SVM155-A is equipped with a digital display that allows for easy monitoring and precise control of the welding parameters, ensuring consistency in weld quality.

The European-designed INVERTER technology embedded in the SVM155-A significantly contributes to its lightweight and compact design. Weighing in at only 19.4 lbs, this welder is portable and ideal for fieldwork or workshops where space is limited. The inverter technology not only reduces the size and weight but also improves energy efficiency, leading to lower operational costs over time.

The SVM155-A also features advanced safety mechanisms, including over-current protection to safeguard the machine from potential damage during excessive use. It also includes a thermal overload shut-off, which prevents overheating, ensuring a longer lifespan for the welder.

Another standout characteristic of the SVM155-A is its exceptional arc stability and ease of use. The machine is designed to provide a smooth and consistent arc, reducing spatter and ensuring clean welds. Moreover, the welder is compatible with a wide range of materials, including stainless steel, aluminum, and carbon steel, further enhancing its versatility.

In conclusion, the Lincoln Electric SVM155-A is a powerful, durable, and multifunctional welding machine that incorporates advanced technologies to meet the needs of modern welding applications. Its portability, safety features, and ability to deliver high-quality welds make it an excellent investment for anyone looking to improve their welding skills or expand their capabilities in various welding projects.