D-2MAINTENANCE

device is not screwed in far enough, the LN-25 motor speed could be unstable or run at full speed with no control. If screwed in too far, it will rub a moving part inside the gearbox.

The module is properly mounted to the gearbox as shipped from the factory. If the device is ever removed or replaced, proper mounting technique is as follows:

1.Be sure all power to the LN-25 is shut off at the power source.

2.Check that the module mounting plate is screwed securely to the side of the gearbox.

3.Gently screw the module into the mounting plate until it just touches and stops against the rotating part inside the gearbox.

4.Back the module out 1⁄2 turn, then snug the module locknut without rotating the module position. Do not overtighten locknut.

CALIBRATION OF LN-25 WIRE SPEED DIAL

Calibration of the LN-25 Wire Speed dial is achieved by proper mounting of the dial knob to the speed potentiometer shaft. Whenever the knob is removed, the dial is recalibrated as follows:

NOTE: Knob set screw does not seat on shaft flat.

1.Be sure the Wire Speed potentiometer mounting nut is securely tightened, then rotate the potentiometer shaft so its flat faces about to the 100 mark on the LO range calibrated dial.

2.Set DIAL RANGE switch to LO and WIRE FEED MODE switch to CV position.

3.Press gun trigger to feed wire and measure the wire feed speed (IN/MIN) using a Portable Digital Wire Feed Speed Meter (Lincoln K283). Take at least two readings to assure repeat- able accuracy.

Feed Speed Meter (Lincoln K283). Take at least two readings to assure repeatable accuracy.

WARNING

Electrode will be electrically “hot”. Do not allow fed wire to contact any metal common with welding work.

An alternate means to measure wire feed speed is as follows:

a. Cut wire off at the end of the gun tip.

b. Press trigger to feed wire for exactly 30 seconds.

c. Cut fed wire off at the end of the gun tip and accurately measure its length.

d. Multiply the measured length by 2 to obtain the wire speed (IN/MIN).

e. Repeat above steps to assure repeatable accuracy.

4.Carefully slip speed knob onto potentiometer shaft so it points precisely to the wire speed measured in step 3, then secure the knob set screw without disturbing the position. Recheck by repeating step 3.

LN-25

Page 27 Page 29
Page 28
Image 28
Lincoln Electric IM359-G manual 2MAINTENANCE, Calibration of LN-25 Wire Speed Dial
Page 27 Page 29

IM359-G specifications

The Lincoln Electric IM359-G is a state-of-the-art multi-process welder designed to offer exceptional versatility and performance in various welding applications. This machine is particularly well-suited for professional welders, fabricators, and hobbyists alike who demand precision and reliability in their welding tasks.

One of the standout features of the IM359-G is its capability to handle multiple welding processes, including MIG, TIG, and Stick welding. This multi-process functionality allows users to switch seamlessly between different welding techniques, making it ideal for complex projects requiring various welding methods. The machine is equipped with advanced inverter technology, which contributes to a smaller, lighter design while enhancing energy efficiency. This technology ensures that users can experience consistent output regardless of the welding conditions, providing high-quality results every time.

Another important characteristic of the IM359-G is its user-friendly interface. The intuitive control panel is designed for easy operation, featuring clear digital displays and simple adjustments. This allows both novice and experienced welders to quickly adapt to the machine and optimize their settings for specific tasks. Additionally, the Lincoln Electric IM359-G comes with a built-in memory function that can store frequently used settings, streamlining workflow and increasing productivity.

The IM359-G is also compatible with Lincoln Electric’s Smart Voltage Sensing technology, which automatically detects the input voltage and adjusts settings accordingly. This feature ensures optimal performance, whether the welder is in a shop setting or on-site with varying power supplies. Coupled with excellent arc stability, this technology helps minimize spatter and provides precise control over the welding process.

Durability is another hallmark of the Lincoln Electric IM359-G. Built with robust materials and designed for longevity, the machine is capable of withstanding the rigors of demanding work environments. Furthermore, it is equipped with advanced thermal overload protection, ensuring that the welder operates within safe limits, preventing damage to the unit.

In conclusion, the Lincoln Electric IM359-G is an impressive multi-process welder that combines advanced technology, user-friendly controls, and robust construction. Its versatility in handling multiple welding processes makes it suitable for a wide range of applications, while features like Smart Voltage Sensing and thermal overload protection ensure reliable performance. Whether for professional use or serious hobbyists, the IM359-G stands out as a top choice for those looking to enhance their welding capabilities.
Top Page Image Contents