5-8. Connecting To Weld Output Terminals

! Stop engine.

1Positive (+) Weld Output Terminal

2Negative (−) Weld Output Terminal

Stick And TIG Welding

For Stick welding Direct Current Electrode Positive (DCEP), connect electrode hold- er cable to Positive (+) terminal on left and work cable to Negative (−) terminal on right.

For Stick and TIG Direct Current Elec- trode Negative (DCEN), connect elec- trode holder cable to Negative (−) terminal on right and work cable to Positive (+) ter- minal on left.

If equipped with optional Polarity/AC Se- lector switch, connect electrode holder cable to Electrode terminal on left and work cable to Work terminal on right.

MIG And FCAW Welding

For MIG welding Direct Current Electrode Positive (DCEP), connect wire feeder cable to Positive (+) terminal on left and work cable to Negative (−) terminal on right. Use Process/Contactor switch to select type of weld output (see Section 6-3).

For MIG and FCAW Direct Current Elec- trode Negative (DCEN), connect wire feeder cable to Negative (−) terminal on right and work cable to Positive (+) termi- nal on left. Use Process/Contactor switch to select type of weld output (see Section 6-3).

If equipped with optional Polarity/AC Se- lector switch, connect wire feeder cable to

! Failure to properly connect weld cables may cause excessive heat and start a fire, or damage your machine.

3Weld Output Terminal

4Supplied Weld Output Terminal Nut

5Weld Cable Terminal

6Copper Bar

Remove supplied nut from weld output termi- nal. Slide weld cable terminal onto weld output terminal and secure with nut so that weld cable terminal is tight against copper bar. Do not place anything between weld cable termi- nal and copper bar. Make sure that the sur- faces of the weld cable terminal and cop- per bar are clean.

Tools Needed:

3/4 in

1

2

6

3

Do not place anything between weld cable terminal and copper bar.

4

5

Electrode terminal on left and work cable to Work terminal on right.

Correct Installation

Incorrect Installation

803 231 / 803 778-A

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Miller Electric OM-4409 manual Connecting To Weld Output Terminals, Stick And TIG Welding, MIG And Fcaw Welding
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OM-4409 specifications

The Miller Electric OM-4409 is a remarkable welding machine designed for both professional welders and enthusiastic hobbyists. Known for its reliability and efficiency, the OM-4409 stands out in the industrial landscape due to its advanced features and innovative technologies.

One of the main features of the OM-4409 is its impressive power output. With a rated output of 400 amps, it is capable of tackling a variety of welding applications, including MIG, TIG, and stick welding. This versatility allows users to switch between welding processes depending on the project requirements while ensuring consistent quality and performance.

The machine incorporates advanced inverter technology, which enhances its overall efficiency. Inverter technology allows for a compact design without sacrificing performance. The OM-4409 weighs significantly less than traditional transformer-based machines, making it more portable and easier to transport. Additionally, the inverter technology ensures that energy consumption is kept to a minimum, reducing operational costs.

Another notable characteristic of the Miller Electric OM-4409 is its user-friendly interface. The intuitive control panel provides easy access to settings and adjustments, allowing welders to fine-tune the machine to their specific needs. The digital display shows crucial parameters such as voltage, amperage, and wire feed speed, enabling welders to monitor their progress in real-time effectively.

Safety is paramount in industrial applications, and the OM-4409 does not disappoint. It is equipped with advanced safety features, including thermal overload protection and fault indication systems. These features ensure that the machine operates within safe limits, protecting both the user and the equipment.

The OM-4409 also boasts a robust build quality, designed to withstand the rigors of daily use in demanding environments. Its durable construction ensures longevity, minimizing maintenance and downtime.

In summary, the Miller Electric OM-4409 welding machine is a powerhouse that combines power, efficiency, and user-friendliness. With its inverter technology, versatility across various welding processes, advanced safety features, and robust design, it represents an excellent investment for any welding professional looking to enhance their capabilities. Whether for heavy-duty industrial applications or intricate metalwork, the OM-4409 delivers unmatched performance and reliability.
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