D-3

MAINTENANCE

D-3

Return to Master TOC

PREVENTIVE MAINTENANCE

1.Perform the following preventive maintenance procedures at least once every six months. It is good practice to keep a preventive maintenance record; a record tag attached to the machine works best.

2.Remove the machine wrap-around cover and per- form the input filter capacitor discharge procedure (detail at the beginning of this chapter).

OVERLOAD PROTECTION

The machine is electrically protected from producing high output currents. Should the output current exceed 340-360A, an electronic protection circuit will reduce the current (“Fold Back”) to approximately 150A. The machine will continue to produce this low current until the protection circuit is reset. Reset occurs when the output load is removed.

Return to Section TOC

Return to Section TOC

Return to Section TOC

Section TOC

Return to Master TOC

Return to Master TOC

Master TOC

3.Clean the inside of the machine with a low pres- sure airstream. Be sure to clean the following components thoroughly. See Figure D.2 for loca- tion of these components.

•Power Switch, Driver, Protection, and Control printed circuit boards

•Power Switch

•Main Transformer

•Input Rectifier

•Heat Sink Fins

•Input Filter Capacitors

•Output Terminals

4.Examine capacitors for leakage or oozing. Replace if needed.

5.Examine wrap-around cover for dents or break- age. Repair as needed. Cover must be kept in good condition to assure high voltage parts are protected and correct spacings are maintained.

6.Check electrical ground continuity. Using an ohm- meter, measure resistance between either output stud and an unpainted surface of the machine case. (See Figure D.2 for locations.) Meter read- ing should be 500,000 ohms or more. If meter reading is less than 500,000 ohms, check for electrical components that are not properly insu- lated from the case. Correct insulation if needed.

THERMAL PROTECTION

Thermostats protect the machine from excessive operating temperatures. Excessive temperatures may be caused by a lack of cooling air or operating the machine beyond the duty cycle and output rat- ing. If excessive operating temperature should occur, the thermostat will prevent output voltage or current. The meter will remain energized during this time.

PC BOARD REPLACEMENT

1.Handle PC Boards by edges only.

2.Store PC Boards only in the bags that disperse static charges.

3.Inspect PC Board for burned conductors or com- ponents. If damage is visible, inspect the machine wiring for grounds or shorts to avoid damaging a new PC Board.

4.If there is no visible damage to the PC Board, install a new PC Board and see if the problem is fixed. If the problem is fixed by the new board, reinstall the old board and see if the problem reoccurs. If the problem does not reoccur, check the wiring harness and plugs for loose connec- tions.

Return to

Return to

7. Replace machine cover and screws.

V300-PRO

Page 20 Page 22
Page 21
Image 21
Lincoln Electric SVM105-B service manual Preventive Maintenance, Overload Protection
Page 20 Page 22

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.
Top Page Image Contents