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F-93

F-93

TROUBLESHOOTING & REPAIR

SCR/DIODE RECTIFIER BRIDGE

REMOVAL AND REPLACEMENT (continued)

FIGURE F.42 – SCR/DIODE RECTIFIER BRIDGE ASSEMBLY REMOVAL

RECTIFIER

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15.Carefully lift and slide the SCR/diode rectifier bridge assembly out the left side of the machine. See Figure F.42.

REASSEMBLY

16.Carefully lift and slide the SCR/diode rectifier bridge assembly into the machine from the left side. See Figure F.42.

17.Using the 3/8" wrench, install the four (2 on each side) screws holding the SCR/diode rectifier bridge assembly rectifier bridge bracket. See Figure F.41.

18.Attach the capacitor leads and grommet to the rectifier bridge bracket. See Figure F.41.

19.Using the 11/32" wrench, attach the #204B lead to the R1 (50 Ohm -100 Watt) resistor. See Figure F.40.

NOTE: Be sure to replace any cable ties cut dur- ing removal. Otherwise, the leads may catch in the blower.

20.Connect plug J30 to the snubber board. Install the snubber board cover using the 3/8" wrench.

21.Using the 3/4" wrench, attach lead #207 to the negative "stick" output terminal. Replace any cable ties cut during removal.

22.Feed plug J6 and the toroid assembly into the control box. Connect plug J6 to the con- trol board. Replace any cable ties cut during removal. Using the 5/16" nut driver, install the control board cover.

23.Using the 1/2" wrench, attach the shunt to the positive heat sink plate (lower). Attach the heavy #204C lead from the positive heat sink plate (lower). Attach lead #209 (small) and #209A (large) to the negative (upper) heat sink plate. Attach the stator weld wind- ing leads to the SCR/diode rectifier bridge assembly. Replace any cable ties cut during removal.

24.Replace the front shroud and all case covers that were removed. (See the Case Cover Removal and Replacement Procedure.)

COMMANDER 400

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Lincoln Electric SVM133-B service manual Figure F.42 SCR/DIODE Rectifier Bridge Assembly Removal

SVM133-B specifications

The Lincoln Electric SVM133-B is an innovative welding machine designed to meet the diverse needs of welders and fabrication shops. This versatile equipment combines state-of-the-art technology with user-friendly features, making it ideal for both novice and professional welders.

One of the main features of the SVM133-B is its advanced inverter technology. This allows for a more efficient power delivery, which translates into reduced energy consumption and lower operational costs. The machine is capable of delivering optimal welding performance across a range of materials, from thin sheets to heavier sections, making it suitable for various applications in industries such as automotive, construction, and repair.

The SVM133-B supports multiple welding processes, including MIG, stick, and TIG welding. This flexibility ensures that users can adapt to various job requirements without needing multiple machines. The intuitive control panel allows users to switch between modes effortlessly, providing a seamless welding experience.

Another notable characteristic of the SVM133-B is its compact and lightweight design. Weighing significantly less than traditional welding machines, it is highly portable, making it easy to transport to different job sites. Additionally, its rugged construction ensures durability, allowing it to withstand tough working conditions.

The SVM133-B is equipped with advanced safety features, such as overheat and overload protection, which safeguard both the machine and the user during operation. It also includes a digital display that provides real-time feedback on settings, voltage, and amperage, which enhances precision and control during welding tasks.

Lincoln Electric has prioritized ease of use in the SVM133-B, with quick setup guides and clear instructions. This user-centric approach not only facilitates a smoother learning curve for beginners but also optimizes the workflow for experienced welders, enabling them to maximize productivity.

One of the standout features is the capability to weld aluminum with ease, thanks to its spool gun compatibility. This feature sets the SVM133-B apart from many competitors, providing added value for users who require flexibility in their welding projects.

In summary, the Lincoln Electric SVM133-B stands out in the welding machine market due to its inverter technology, multi-process capabilities, portability, and robust safety measures. It embodies the perfect blend of innovation and practicality, making it a top choice for welders looking to enhance their skills and productivity across a wide array of applications. Whether for professional use or hobbyist projects, the SVM133-B offers a reliable solution for high-quality welding tasks.