E-6TROUBLESHOOTINGE-6

Observe all Safety Guidelines detailed throughout this manual

PROCEDURE FOR REPLACING P.C.

BOARDS

When P.C. board is to be replaced, the following pro- cedure must be followed:

1.Visually inspect P.C. board in question. Are any of the components damaged? Is a conductor on the back side of the board damaged? All P.C. boards are protected by a moisture resistant coating. When the welder is operated, this coating will “bake off” of certain power resistors that normally operate at high temperatures emitting some smoke and odor for a short time. These resistors and the P.C. board beneath them may become blackened. This is a normal occurrence and does not damage the component or affect the machine performance.

a.If there is no damage to the P.C. board, insert a new one and see if this remedies the prob- lem. If the problem is remedied, replace the old P.C. board and see if the problem still exists with the old P.C. board.

1)If the problem is no longer present with the old board, check the P.C. board harness plug and P.C. board plug for corrosion, contamination, or oversize.

2)Check leads in the harness for loose con- nections.

b.If there is damage to the P.C. board, refer to the Troubleshooting Guide

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

IDEALARC® DC-1000

Page 21 Page 23
Page 22
Image 22
Lincoln Electric IM420-D manual 6TROUBLESHOOTINGE-6, Procedure for Replacing P.C Boards
Page 21 Page 23

IM420-D specifications

The Lincoln Electric IM420-D is a high-performance industrial welding machine that offers advanced features and technologies tailored for demanding welding environments. Designed for arc welding applications, the IM420-D is a versatile solution suitable for various welding processes, including MIG, TIG, and stick welding. This flexibility makes it an excellent choice for both professional welders and industries that require a reliable and efficient welding system.

One of the standout features of the IM420-D is its impressive output range. With a maximum output of 420 amps, this machine can handle thick materials and deliver deep penetration, making it ideal for heavy-duty applications. The machine also provides consistent arc stability, ensuring high-quality welds with minimal spatter. This functionality is essential in maintaining productivity and reducing the need for post-weld cleanup.

The IM420-D incorporates advanced digital control technology that enhances user experience and precision. The intuitive interface allows operators to quickly adjust settings for voltage, wire feed speed, and other parameters, ensuring optimal performance for diverse welding tasks. Additionally, the machine is equipped with a memory function that saves preferred settings, enabling quick setup for repetitive jobs.

Another notable characteristic of the IM420-D is its robust construction. Built to withstand the rigors of a manufacturing environment, the machine features a durable casing designed to protect key components from dust, moisture, and impact. This reliability results in fewer maintenance issues and extended service life, contributing to lower operational costs over time.

The IM420-D also includes a range of safety features that prioritize operator protection. Overheat protection, voltage fluctuation safeguards, and high-quality electrical insulation ensure a safe working environment, minimizing the risk of accidents during operation.

In conclusion, the Lincoln Electric IM420-D is an exceptional welding machine that combines high output, advanced digital technology, and robust design. With its user-friendly controls and safety features, it meets the needs of professional welders and industries seeking efficiency and quality in their welding operations. Whether for manufacturing, construction, or repair work, the IM420-D stands out as a top-tier choice in the welding equipment market.
Top Page Image Contents