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F-41

TROUBLESHOOTING AND REPAIR

F-41

 

 

SCR BRIDGE ASSEMBLY

REMOVAL AND REPLACEMENT PROCEDURE (continued)

FIGURE F.8 – FRONT PANEL MOUNTING SCREWS

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FRONT PANEL

MOUNTING

SCREWS

PROCEDURE (continued)

9.Remove plug J2 from the control board. (See Figure F.9.) Also remove plug and lead harness from internal divider panel.

10.Carefully slide the internal divider panel away a few inches to allow access to the SCR bridge assembly.

11.Using the 7/16” wrench disconnect the diode pigtail connection from the polarity switch lead. See Figure F.10. Cut any necessary cable ties and remove insulating sleeving.

Note placement of sleeving and cable ties for reassembly.

12.Using the 7/16” wrench remove the X2 sec- ondary transformer lead from the left side AC SCR heat sink.

13.With the 7/16” wrench remove the shunt from the SCR bridge left side negative heat sink.

14.Using the 7/16” wrench remove the polarity switch lead from the right side AC SCR heat sink.

15.Using the 7/16” wrench remove the positive lead from the right side positive heat sink.

PRECISION TIG® 225

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Lincoln Electric SVM186-A service manual Procedure

SVM186-A specifications

The Lincoln Electric SVM186-A is a versatile and highly efficient welding machine that stands out in the competitive landscape of industrial welding equipment. Designed to meet the needs of both professionals and hobbyists, this machine combines advanced technology with robust construction, delivering outstanding performance in various welding applications.

One of the standout features of the SVM186-A is its multi-process capability. This welding machine can handle MIG, TIG, and Stick welding processes, making it suitable for a diverse range of projects, from light fabrication to heavy-duty work. This flexibility reduces the need for multiple machines, saving time and space for users who require versatility in their welding operations.

The SVM186-A is powered by a reliable and durable inverter technology, which ensures a stable arc and efficient operation across different materials, including stainless steel, aluminum, and mild steel. This inverter technology not only enhances performance but also reduces energy consumption, making it an environmentally friendly choice.

Another notable characteristic of the SVM186-A is its user-friendly interface. The digital display provides real-time information on voltage and wire feed speed, allowing welders to easily adjust settings for optimal results. This intuitive control panel design makes it accessible for both novice welders and seasoned professionals who value precision.

The machine is also built with safety features in mind. It comes equipped with overcurrent protection and thermal overload protection to prevent damage during operation. This ensures that users can work confidently, knowing that the equipment is designed to handle demanding tasks while prioritizing safety.

Portability is another advantage of the SVM186-A. Weighing in at a relatively light weight compared to other industrial welders, this machine is designed for ease of transport. Whether working on-site or in a workshop, welders can easily move the equipment as needed.

In summary, the Lincoln Electric SVM186-A is a sophisticated welding machine that merges technology and practicality. Its multi-process capability, inverter technology, user-friendly interface, safety features, and portability make it a top choice for those seeking dependable and efficient welding solutions. Whether for professional fabrication or personal projects, the SVM186-A is equipped to handle the demands of modern welding tasks with exceptional ease and effectiveness.