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F-54

TROUBLESHOOTING & REPAIR

F-54

 

STATOR VOLTAGE TESTS (CONTINUED)

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To test the 42 VAC wire feeder winding:

1.Connect the voltmeter probes to pins “I” (lead 41A) and “K” (lead #42A) of the 14 pin Amphenol. See Figure F.11.

2.Start the engine and run it at high idle (1860 to 1890 RPM).

3.The AC voltage reading should be between 40 and 50 VAC.

4.If these voltage readings are not within the specified limits, check for a tripped or defective circuit breakers, loose connections, or broken wires between the test points and the stator windings. If there are no wiring problems, and the circuit breakers are not tripped or defec- tive, the stator is defective and should be replaced.

To test the three-phase weld winding:

1.Locate weld winding leads W1, W2, and W3 where they connect to the three-phase output bridge rectifier. See Figure F.12. See wiring diagram.

2.Start the engine and run it at high idle (1860 to 1890 RPM).

3.Check for about 60 to 65 VAC from leads W1 to W2, W2 to W3, and W1 to W3.

4.If these voltage readings are not within the specified limits, check for loose connections or broken wires between the test points and the stator windings. If there are no wiring prob- lems, the stator is defective and should be replaced.

* These values are maximum for a cold machine.

VANTAGE® 400

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Lincoln Electric 400 service manual To test the 42 VAC wire feeder winding, To test the three-phase weld winding

400 specifications

The Lincoln Electric 400 is a state-of-the-art multi-process welding machine designed to meet the demands of today’s industrial welding applications. Renowned for its reliability and versatility, this welder is a preferred choice among professionals in fabrication, construction, and maintenance industries.

One of the main features of the Lincoln Electric 400 is its multi-process capability. It seamlessly integrates MIG, TIG, and stick welding processes into a single unit, allowing users to switch between methods depending on the job at hand. This flexibility makes it incredibly suitable for a wide range of materials, including steel, stainless steel, and aluminum.

The welding machine boasts a robust power output, with a maximum range of 400 amps. This impressive capacity enables it to handle thick materials effectively, making it ideal for heavy-duty tasks. The machine operates on both single-phase and three-phase power, giving users the advantage of versatility depending on the power source available at the job site.

Another significant characteristic of the Lincoln Electric 400 is its advanced digital display and control interface. This user-friendly panel allows for easy adjustments to voltage and wire feed speed, ensuring precision and high-quality welds. Additionally, the machine includes built-in features to improve the consistency of welding, such as the Smart MIG technology which optimizes the welding parameters automatically based on the wire diameter and material thickness.

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In conclusion, the Lincoln Electric 400 stands out in the welding equipment market due to its multi-process capabilities, impressive power output, user-friendly interface, durability, and portability. It is engineered to exceed the expectations of professional welders, providing them with the tools needed for high-quality results across a variety of applications.