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F-21

F-21

TROUBLESHOOTING & REPAIR

IDLER SOLENOID TEST (continued)

FIGURE F.6 - SOLENOID LEAD CONNECTIONS

SOLENOID

LEADS

56 & 57

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TEST PROCEDURE

1.Turn engine off.

2.Unlatch, lift and secure the left side door. Note that there are latches at both ends of the door.

3.Using the 5/16" nut driver, remove the three screws holding the fan guard. Remove the fan guard.

4.Locate leads #56 and #57 on the idler sole- noid. See Figure F.6 and the Wiring Diagram. Using the 5/16" wrench, remove the leads from the solenoid.

5.Using the external voltage supply, apply 12VDC to the idler solenoid terminals. Attach positive (+) to the terminal where lead #56 was connected. The solenoid should activate.

6.The solenoid should deactivate when the 12VDC is removed.

7.If the solenoid does not operate properly, check for a mechanical restriction in the linkage or a missing spring.

8.If the linkage is intact and the solenoid does not operate correctly when 12VDC is applied, the solenoid may be faulty. Replace. Normal solenoid coil resistance is approximately 9 ohms.

9.When the test is complete and the problem repaired, be sure to reconnect leads #56 and #57 to the idler solenoid.

10.Close and latch the left side door.

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SA-250

Page 75
Image 75
Lincoln Electric SVM128-A service manual Idler Solenoid Test

SVM128-A specifications

The Lincoln Electric SVM128-A is a cutting-edge welding machine designed to meet the demands of both professional welders and DIY enthusiasts. This versatile welding power source brings together advanced technology and robust design, making it a reliable choice for various welding applications.

One of the standout features of the SVM128-A is its capability to perform multiple welding processes. It supports MIG, TIG, and stick welding, allowing users to tackle a wide range of projects with ease. This multi-functionality makes it ideal for professionals working in different industries, as well as for hobbyists who enjoy diverse welding tasks.

The SVM128-A is equipped with inverter technology, which enhances its performance by providing a more stable arc and improved energy efficiency. This technological advancement contributes to lower operational costs and allows for a more consistent weld quality across different materials and thicknesses. Additionally, the inverter technology enables the machine to be lightweight and portable, making it convenient for jobs that require mobility.

Another prominent characteristic of the SVM128-A is its user-friendly interface. The machine features intuitive controls and a digital display that allows operators to easily set the desired welding parameters. This simplified setup helps reduce the learning curve for new users while also offering precise control for experienced professionals.

The Lincoln Electric SVM128-A is designed with durability in mind. Its robust construction ensures that it can withstand the rigors of frequent use in demanding environments. The machine is also equipped with various safety features, including thermal overload protection and a duty cycle rating that prevents overheating, ultimately extending its lifespan.

For optimal performance, the SVM128-A provides adjustable output options, allowing users to customize the welding parameters based on their specific needs. This flexibility makes it suitable for welding various metals, including steel, aluminum, and stainless steel.

In summary, the Lincoln Electric SVM128-A combines versatility, advanced technology, and a user-friendly design. With its capability to perform multiple welding processes, lightweight construction, and durable features, it stands out as an excellent option for anyone looking to achieve high-quality welds. Whether for professional or personal use, the SVM128-A is poised to deliver reliable performance and exceptional results.