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Lincoln Electric IM788 manual Changing the Contact TIP, Changing Drive Roll

Models: IM788

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D-3

MAINTENANCE

 

 

 

D-3

COMPONENT REPLACEMENT PROCEDURES

CHANGING THE CONTACT TIP

1.Unplug or turn power switch to Off “O” position.

2.Refer to Figure D.2. Remove the gas nozzle from the gun by unscrewing counter-clockwise.

3.Remove the existing contact tip from the gun by unscrewing counter-clockwise.

4.Insert and hand tighten desired contact tip.

5.Replace gas nozzle.

CHANGING THE SP-135 PLUS FOR USE WITH INNERSHIELD FLUX CORED WIRE

• Change The Contact Tip

1.Refer to Figure D.2. Remove the gas nozzle from the gun by unscrewing counter-clockwise.

2.Remove the existing contact tip from the gun by unscrewing counter-clockwise.

3.Insert and hand tighten the contact tip for use with 0.035” Innershield Flux Cored Wire.

4.Replace gas nozzle – The gasless nozzle may be used instead of the gas nozzle to give improved vis- -ibility of the arc.

CHANGING DRIVE ROLL

The drive roll, Figure D.1 Item 1, has two grooves; one for .023" – .025" (0.6 mm) solid steel electrode and a larger groove for .030" (0.8 mm) solid and .035" (0.9 mm) flux-cored steel electrode. As shipped, the drive roll is installed in the .023"-.025" (0.6 mm) position.

If .030"/.035" (0.8/0.9 mm) wire is to be used, the drive roll must be reversed as follows:

1.Turn the power switch to OFF (marked “O”).

2.Release the spring-loaded idle arm tensioner, Figure D.1 Item 2, and lift the idle roll arm, Figure D.1 Item 3, away from the drive roll.

3.Loosen the Phillips Head screw holding the drive roll onto the drive shaft.

CAUTION

When inching the welding wire, the drive rolls, gun connector block, and gun contact tip are energized relative to work and ground and remain energized for several seconds after the gun trig- ger is released.

4.Remove the drive roll, flip over and reinstall with the opposite groove closest to the gearbox.

NOTE: The stencil of the groove that you want to use is marked on the outside of the drive unit (when installed)

5.Push a length of straightened welding wire through the wire feeder guide tubes and reset the Phillips Head screw to secure the drive roll onto the shaft.

6.Reapply the spring loaded idle arm tensioner.

7.Turn the power “ON” (I) and check the drive roll for slipping when feeding wire. DO NOT OVERTIGHTEN - If necessary, tighten or loosen the spring loaded idle arm tensioner (2).

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2

1

FIGURE D.1

SP-135 PLUS

SP-135 PLUS

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Lincoln Electric IM788 manual Changing the Contact TIP, Changing Drive Roll
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IM788 specifications

The Lincoln Electric IM788 is a cutting-edge industrial welding inverter known for its advanced features and technologies that enhance productivity and efficiency in various welding applications. This machine is specifically designed to cater to the demands of high-performance environments while maintaining reliability and ease of use.

One of the standout features of the IM788 is its multi-process capability. It offers MIG, TIG, and stick welding options, making it a versatile choice for welders who work with a diverse range of materials and thicknesses. This flexibility enables operators to switch processes seamlessly without compromising on performance, thereby increasing overall productivity.

The IM788 is equipped with Lincoln Electric's exclusive Synchronized Arc Control Technology, which optimizes the arc characteristic for different materials and welding conditions. This technology helps to achieve cleaner and more precise welds, minimizing the need for post-weld finishing. Additionally, the machine offers a broad range of voltage and amperage settings, allowing for fine-tuning based on specific project requirements.

Another significant attribute of the IM788 is its built-in intelligence. The machine incorporates advanced microprocessor control, which enhances user interface capabilities and allows for easy adjustments to welding parameters. The intuitive digital display provides real-time feedback on settings and performance, enabling operators to make informed decisions and adjustments as needed.

Durability is also a key characteristic of the Lincoln Electric IM788. Its hardened metal case ensures protection against harsh working conditions, while internal components are designed to withstand heavy usage. This robust construction not only extends the machine's lifespan but also maintains consistent performance even in demanding environments.

The IM788's compact design and lightweight construction make it portable and easy to transport, allowing welders to move it effortlessly between job sites. Coupled with its energy-efficient operation, this inverter contributes to lower operational costs, making it an economical investment for both small workshops and large industrial operations.

In summary, the Lincoln Electric IM788 stands out for its multi-process capabilities, advanced welding technologies, user-friendly interface, and robust design. These features make it an ideal choice for professionals seeking a reliable and efficient welding solution. Whether for fabrication shops, construction sites, or maintenance applications, the IM788 delivers exceptional performance and versatility, solidifying its position as a leading welding inverter in the market.