Lincoln Electric SVM186-A guide

Section TOC

Master TOC

F-54F-54

TROUBLESHOOTING AND REPAIR

MAIN TRANSFORMER AND OUTPUT CHOKE ASSEMBLY REMOVAL AND REPLACEMENT PROCEDURE (continued)

REMOVAL PROCEDURE

1.Remove input power to the TIG 225 machine.

2.Perform the SCR Bridge Assembly Removal

Procedure.

3.Unsolder the two 115VAC leads and leads B231 and B232 from the main transformer leads. Label leads for reassembly. See wiring diagram.

4.Unsolder leads W201 and W204 from the main transformer leads. Label leads for reassembly. See wiring diagram.

5.Unsolder leads R209 and U210 from the main transformer leads. Label leads for reassembly. See wiring diagram.

6.Using the 1/2” wrench remove the shunt assembly from the choke lead.

7.With the 3/8” wrench remove the H1, H2 or H3 lead from the input power switch. See wiring diagram. Label the leads and connection points for reassembly. Cut any necessary cable ties.

8.Remove plug J3 from the control board and push through the interior divider panel.

9.Using the 1/2” wrench remove the choke lead from the polarity switch. See wiring diagram. Label lead and connection point for reassembly.

10.With the 1/2” wrench remove the X1 sec- ondary lead from the polarity switch. See wiring diagram. Label lead and connection point for reassembly.

11.With the 1/2” wrench remove the four nuts and lock washers from the transformer mounting bolts at the base of the machine.

12.Carefully hoist the transformer/ choke assem- bly clear of the base. Clear all leads.

REPLACEMENT PROCEDURE

1.Position the new transformer/choke assembly onto the base and mounting bolts.

2.Assemble the four nuts and washers to the mounting bolts on the base of the machine.

3.Assemble the X1 secondary lead to the polarity switch.

4.Assemble the choke lead to the polarity switch.

5.Install the J3 plug into the control board.

6.Assemble the H1, H2 or H3 lead onto the input power switch. Insulate and secure the unused lead (H2 or H3).

7.Assemble the shunt assembly to the choke lead.

8.Solder leads R209 and U210 to the main trans- former leads. See wiring diagram. Insulate connections.

9.Solder leads W201 and W204 to the main transformer leads. See wiring diagram. Insulate connections.

10.Solder the two 115VAC leads and leads B231 and B232 to the main transformer leads. See wiring diagram. Insulate connections.

11.Replace any previously removed cable ties. Clear leads and check for “shorts” or “grounds”.

12.Perform the SCR Bridge Assembly

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.

Lincoln Electric SVM186-A service manual Perform the SCR Bridge Assembly Replacement Procedure

Models: SVM186-A