TOC

TOC

F-40F-40

TROUBLESHOOTING & REPAIR

MULTI-SOURCE METER ACCURACY CHECK (Continued)

Return to Section

Return to Section TOC

Return to Master

Return to Master TOC

METER ACCURACY CHECK

1.With power off, connect a resistive load and the meter grade shunt to the output terminals. Use either a resistive grid, multisource welders or a combination of both.

2.Turn machine on.

3.Adjust the resistive load to approximately 533 amps DC as read by the DC ammeter via the meter grade shunt.

4.The Multi-Source digital display should read approximately “100”.

5.If the result is satisfactory the the test is over and the machine may be reassembled. If the required results are not obtained proceed to the next sec- tion.

PROCEDURE TO RECALIBRATE IF METER IS OUT OF RANGE

If the measured current is within the acceptable cur- rent range (approximately 533 amps DC) and the Multi-Source digital display does not read approxi- mately “100” then the meter must be recalibrated. The Multi-Source digital display is controlled by a current sensing circuit on the Control board. The display should read “100” when the machine output is a little over 40 kW. To adjust the digital meter, trimmer resis- tor R49 on the Control board may be adjusted. See Figure F.18. for location of R49 trimmer.

If the meter can not be calibrated using this procedure then the Control board or the output shunt may be faulty. See the Wiring Diagram.

Note: The output shunt is rated at 50 mv @ 800 A.

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

FIGURE F.18. R49 TRIMMER

J2

R49

J1

J3

Control Board

MULTI-SOURCE

Page 68
Image 68
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.