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F-38

TROUBLESHOOTING AND REPAIR

F-38

 

FLASHING VOLTAGE TEST

 

 

(Engine not running) (continued)

 

 

FIGURE F.11 – EXCITER COVER SCREW

FIGURE F.12 – FLASHING VOLTAGE TEST

 

 

LOCATIONS

 

 

FIVE SCREWS

 

BRUSH HOLDER ASSEMBLY

(TWO ON OTHER SIDE)

EXCITER COVER

VOLTMETER LEADS

 

 

 

BRUSHES

NEGATIVE

POSITIVE

SLIP RING

SLIP RING

PROCEDURE

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1.Open either, or both of the doors on the control panel end of the SAE-400 machine.

WARNING: Secure the doors in the open position using the door restraint system. If the machine does not have a door restraint system, remove the doors or securely restrain them to prevent them from falling closed.

2.Remove the covers from the exciter/auxiliary power alternator by removing the screws. See Figure F.11.

3.Make sure that the battery is fully charged and in good condition, and the battery connections are clean and tight.

4.Connect the volt meter probes to the brush termi- nals. See the wiring diagram and Figure F.12.

5.Set the RUN/STOP switch to “RUN”. Do not start the engine at this time.

6.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.

NOTE: If the flashing voltage reading is not taken with- in 30 seconds, (60 seconds with some models) after moving the run/stop switch to the run posi- tion, move the run/stop to “stop” then back to “run”. This resets the Idler/engine protection PC board.

SAE-400 SEVERE DUTY

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Lincoln Electric SVM187-A service manual Flashing Voltage Test

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.