E-4

TROUBLESHOOTING

E-4

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

PROBLEMS

(SYMPTOMS)

POSSIBLE

CAUSE

RECOMMENDED

COURSE OF ACTION

No welding power output.

1. Poor work lead connection to

 

 

work.

 

2.

"Weld Terminals" switch in

 

 

wrong position.

 

3.

Faulty PC board or welder alter-

 

 

nator.

 

 

Welder has output but no control.

1. Poor remote / control cable con-

 

 

nection to 6 pin or 14 pin

 

 

Amphenol connector.

 

2.

Faulty remote cable or faulty

 

 

wire feeder or wire feeder cable.

 

3.

Faulty control potentiometer or

 

 

PC board.

 

 

Wire feeder does not work when

1. Wire Feeder Power circuit

control cable is connected to 14 pin

 

breaker open.

Connector.

 

 

 

2.

Faulty control cable.

 

3.

Faulty wire feeder.

 

 

No auxiliary power.

1. Open circuit breakers.

 

2.

Faulty connections to auxiliary

 

 

receptacles.

 

3.

GFCI tripped (if installed).

 

4.

Brushes worn or not on contact

 

 

with slip rings.

 

5.

Rotor winding not receiving

 

 

flashing current from PC board.

 

6.

Rotor winding open.

 

 

 

 

 

 

If all recommended possible areas of misadjustment have been checked and the problem persists,

Contact your local Lincoln Authorized Field Service Facility.

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.

RANGER® 250

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Lincoln Electric IM919 manual Troubleshooting

IM919 specifications

The Lincoln Electric IM919 is a highly advanced multi-process welding machine that combines versatility and efficiency, making it a go-to choice for professional welders and fabrication shops. Known for its robust design and user-friendly interface, the IM919 is engineered to perform a wide range of welding processes, including MIG, TIG, and stick, enhancing its application for various projects.

One of the standout features of the IM919 is its intuitive control panel. Designed with a clear digital display, it allows welders to easily select and adjust settings for voltage, wire feed speed, and amperage with precision. This accessibility makes it suitable for both novice and experienced users, providing a seamless experience in the welding process.

Technologically, the IM919 incorporates Lincoln Electric’s advanced welding technologies. The machine employs an inverter-based power supply, which offers a lightweight design and improved energy efficiency. This inverter technology significantly enhances arc stability, ensuring consistent weld quality across various materials, including steel, aluminum, and stainless steel. With a maximum output of around 300 amps, the IM919 is capable of handling heavier gauge materials while maintaining a compact form factor.

Additionally, the IM919 features a synergic control mode, which automatically adjusts parameters based on the selected wire type and diameter. This function aids in optimizing the welding process and minimizes trial and error, allowing for faster, more reliable results. Moreover, the machine is equipped with a powerful cooling system that prevents overheating during extended operation, thus extending its overall lifespan.

Durability and safety are paramount in the design of the IM919, as it comes with an IP23S rating, which means it is protected against water and dust ingress, making it suitable for various working environments. Enhanced safety features, such as overload protection and thermal cut-off, ensure that the welder remains operationally safe even under demanding conditions.

In summary, the Lincoln Electric IM919 is a state-of-the-art welding machine that excels in versatility, user-friendliness, and durability. With its advanced technologies and features, it stands out as an essential tool for professionals seeking quality and reliability in welding applications. Whether in a busy workshop or on a job site, the IM919 delivers outstanding performance, making it a valuable investment for anyone in the welding trade.