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Lincoln Electric SVM187-A service manual Figure F.7 Exciter Rotor Voltage Test

Models: SVM187-A

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F-31

TROUBLESHOOTING AND REPAIR

F-31

EXCITER ROTOR VOLTAGE TEST (continued)

FIGURE F.7 – EXCITER ROTOR VOLTAGE TEST

BRUSH HOLDER ASSEMBLY

VOLTMETER LEADS

BRUSHES

NEGATIVE

POSITIVE

SLIP RING

SLIP RING

PROCEDURE (continued)

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5.Connect the volt meter probes to the brush termi- nals. See the wiring diagram and Figure F.7

NOTE: On this machine, and all other Lincoln Electric DC generator machines, the black exciter lead is positive, and the red lead is negative.

6.Set the RUN/STOP switch to “RUN” and the IDLE switch to “HIGH”. Do not start the engine at this time.

7.Within 30 seconds of switching the run/stop switch to the run position, read the “flashing” voltage across the brush connections. The meter should read approximately 2 to 4 VDC. (Check this voltage)

If this voltage reading is correct, start the engine and continue the testing.

If this voltage is not within these limits, perform the Flashing Voltage Tests.

NOTE: If more than 30 seconds (One minute for some models) has passed, the engine fault lamp will turn on and the fuel solenoid and flashing volt- age will be turned off. Before the engine can be started, the engine protection system will need to be reset by switching the run/stop switch off, then on again.

8.Start the engine and allow the RPM to stabilize for about 15 to 30 seconds.

The meter should read 124 to 132 VDC*.

(continued on following page)

SAE-400 SEVERE DUTY

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Lincoln Electric SVM187-A service manual Figure F.7 Exciter Rotor Voltage Test
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SVM187-A specifications

The Lincoln Electric SVM187-A is a cutting-edge welding machine designed for professional welders and industrial applications. Known for its reliability and performance, it stands out in the competitive welding equipment market. This versatile machine is structured to handle various welding processes, making it a popular choice among users.

One of the primary features of the SVM187-A is its multifunctional capabilities. It supports MIG, TIG, and Stick welding, allowing users to switch between different welding techniques seamlessly. This flexibility makes it suitable for diverse applications, whether working on automotive repairs, metal fabrication, or construction projects. Additionally, the machine is equipped with a robust power output, ranging from low to high amperage settings, enabling users to tackle a wide array of materials, including mild steel, stainless steel, and aluminum.

The SVM187-A incorporates advanced inverter technology, which ensures increased efficiency and reduced energy consumption. This technology leads to a more compact design, making the unit portable and easy to transport. The lightweight construction of the machine does not compromise its durability; it is built with high-quality materials to withstand the rigors of a professional workshop.

Another notable characteristic of the SVM187-A is its user-friendly interface. The intuitive control panel includes digital displays for precise settings adjustments, ensuring accuracy during operation. Beginners and seasoned welders alike can benefit from the clear and straightforward design, reducing training time and enhancing productivity.

Safety features are paramount in the SVM187-A's design. The machine is equipped with thermal overload protection, ensuring that it operates within a safe temperature range to prevent damage and promote longevity. Additionally, it features automatic voltage regulation, which maintains a stable arc even under varying input voltage conditions.

In summary, the Lincoln Electric SVM187-A is a versatile, efficient, and user-friendly welding machine suited for both professional and industrial applications. Its multifunctionality, inverter technology, and robust safety features set it apart from competitors, making it a reliable choice for welders seeking to elevate their craftsmanship while ensuring safety and efficiency. This machine represents the innovation and quality that Lincoln Electric is renowned for in the welding industry.