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F-53

TROUBLESHOOTING & REPAIR

F-53

 

STATOR VOLTAGE TESTS (CONTINUED)

FIGURE F.12 - RECTIFIER BRIDGE DETAIL

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To test the 120 VAC wire feeder supply:

NOTE: The wire feeder AC voltage supply tests require that the meter probes be inserted into the Amphenol connection cavities. Care should be taken to avoid damaging or expanding the termi- nals when inserting the probes.

NOTE: The 120 VAC power supplied to the 14 pin Amphenol connector originates from the same winding that supplies the 120 VAC receptacles. If the machine has previously passed 120VAC auxil- iary winding test, this test can only reveal problems in connections or components between the Amphenol and the stator winding.

1.Connect the voltmeter probes to pins “A” (lead #32) and “J” (lead #31) of the 14 pin Amphenol. See figure #3 and wiring diagram.

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

3.The AC voltage reading should be between 115 and 132 VAC.

4.If these voltage readings are not within specifi- cations, check for a tripped or defective circuit breaker, faulty connections, or broken wires between the test points and the stator wind- ings. See wiring diagram.

VANTAGE® 400

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Lincoln Electric 400 service manual Figure F.12 Rectifier Bridge Detail, To test the 120 VAC wire feeder supply

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.