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TROUBLESHOOTING & REPAIR

F-4

ADDITIONAL INFORMATION

OSCILLOSCOPE WARNING

Do not use oscilloscopes and other pieces of test equipment that are powered by 115 VAC. This equipment should not be used with inverter-type machines, such as Invertec V300-PRO. There are high voltages present, which are “floating” off case ground (floating ground). Connecting the ground lead of a test probe (which may be connected to the case of the test equipment) to a high voltage potential presents a shock hazard as well as the possibility of damage to the equip- ment in question.

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INPUT FILTER CAPACITOR CONDITION- ING

Capacitor conditioning may be required if the machine will not produce output after power is applied and the following two conditions exist:

The machine is connected to a supply of 380 v.a.c. or higher

and

Power has not been applied to the machine for an extended period of time (months).

To condition the input filter capacitors:

1.Turn the Power Switch OFF

2.Remove any load and do not load the machine until the capacitor conditioning is completed.

3.Turn the Power Switch ON and leave the machine energized for at least 30 minutes.

4.Cycle the Power Switch OFF and on again .

The machine should now work normally. If not,contin- ue with the Troubleshooting Section of this manual.

MATCHED PARTS

The following parts must be replaced in matched sets:

Output Diodes D1, D2, D3, D4, and D5.

Output Diodes D7, D8, D9, D10, and D11.

Note: On newer codes where Diode Modules are used in place of individual diodes, both modules on a heat sink assembly should be replaced if one fails.

Capacitor Bleeder Resistors: R1 & R9

Capacitors: C1 & C2

Capacitors C1, C2, C14 & C15 on 575 v.a.c. units.

Switch Boards proir to L10598-[ ]

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V300-PRO

Page 34
Image 34
Lincoln Electric SVM105-B service manual Additional Information Oscilloscope Warning, Input Filter Capacitor CONDITION- ING

SVM105-B specifications

The Lincoln Electric SVM105-B is a state-of-the-art welding machine that represents a leap forward in welding technology, designed for both professionals and enthusiasts in the welding industry. This versatile machine combines robust performance with user-friendly features, making it suitable for a wide range of welding applications.

One of the key features of the SVM105-B is its advanced inverter technology. This allows for a lightweight design without compromising on power output. The inverter technology ensures a stable arc and precise control, enabling consistent weld quality across various materials, including mild steel, stainless steel, and aluminum. This feature is particularly beneficial for users who demand exceptional performance in both thin and thick materials.

The SVM105-B also boasts an impressive output range, typically between 10A to 105A, allowing for adaptability to different welding tasks. Its ability to seamlessly switch between DC and AC modes makes it an ideal choice for professionals working in diverse environments, facilitating operations such as TIG and stick welding. This versatility is further enhanced by its compatibility with various electrode types, ensuring a more efficient and effective welding process.

User safety and comfort have not been overlooked in the design of the SVM105-B. Equipped with an efficient cooling system, this machine effectively manages heat during prolonged use, ensuring durability and longevity. Additionally, its intuitive digital display provides real-time feedback on settings, making it easier for users to monitor parameters and make necessary adjustments on the fly.

The SVM105-B is built with portability in mind. Its compact and lightweight design makes it easy to transport, enabling welders to bring their equipment to job sites without hassle. Furthermore, the machine features sturdy handles that contribute to its ease of maneuverability, supporting the demands of both inside workshops and outdoor projects.

Moreover, Lincoln Electric places a strong emphasis on quality and reliability, and the SVM105-B is a testament to this commitment. The machine is constructed from durable materials designed to withstand the rigors of daily use, ensuring it remains a staple in any welder's toolkit for years to come.

In conclusion, the Lincoln Electric SVM105-B stands out with its combination of advanced inverter technology, versatile output, user-friendly interface, and robust construction. Whether for professional or hobbyist use, this welding machine meets a wide array of welding needs while providing excellent performance and durability.