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F-26

TROUBLESHOOTING AND REPAIR

F-26

BRUSH AND SLIP RING SERVICE PROCEDURE (Exciter / Auxiliary Power Alternator) (continued)

FIGURE F.3 – EXCITER COVER SCREW LOCATIONS

FIVE SCREWS

(TWO ON OTHER SIDE)

EXCITER COVER

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PROCEDURE

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 securing it. See Figure F.3.

3.Examine brushes, slip rings, and brush holder.

•Brushes should be clean and free from oil or grease.

•The brushes should be of sufficient length and have adequate spring tension.

•Brushes should be making good, continuous contact with the slip rings, and should be riding near the center of the slip rings. (The brush holder bracket may need to be slightly bent to achieve acceptable alignment.)

(Generally, the brushes should be replaced if either brush has less than 1/4” remaining before it reach- es the end of its travel.)

4.If the slip rings are very dark in color, display evi- dence of excessive arcing, or have worn prema- turely, these may be signs of a grounded or shorted rotor. Perform the Exciter Rotor Resistance and

Ground Test.

SAE-400 SEVERE DUTY

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Lincoln Electric SVM187-A service manual Procedure, Figure F.3 Exciter Cover Screw Locations
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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.
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