Manuals / Lincoln Electric / Power Tools / Welding System

Lincoln Electric NA-5NF, NA-5SF Setting Travel Starting and Stopping, Starting Sequences

Models: NA-5S NA-5N NA-5SF NA-5NF

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B-6

OPERATING INSTRUCTIONS

B-6

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The starting sequence is as described above except that when the arc strikes, the machine welds at the wire speed and voltage set by the “Start Controls” panel until the time set on the thumbwheel switch elapses. The circuit then automatically switches to the “Welding Controls” wire speed and voltage. Actual settings depend on application requirements.

Available options for applications with particularly difficult starting.

1.K238 High Frequency Generator - See IM305 Sec. T2.5.8.

3.Any application for improved arc striking.

“Standstill” Travel Starting

All models can be reconnected so the travel remains at a standstill until the arc starts. “Standstill” travel starting is used when the electrode must be started at a precise location.

For consistent arc striking with “Standstill” travel starting, always clip the end of the electrode to a sharp point before starting.

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SETTING TRAVEL STARTING AND STOPPING

Standard machines can be connected for a variety of starting and stopping sequences.

STARTING SEQUENCES

“On-the-Fly” Travel Starting

When shipped, all models are connected for “On-the-Fly” travel starting. The starting sequence is as follows:

1.With the electrode NOT touching the work, press the “Start” button. This starts both the wire feed and travel motors.

2.When the electrically “hot” electrode touches the work to start the arc, there is relative motion between the end of the electrode and the work. This “scratching” type contact helps assure consistent arc striking.

This sequence is recommended for most welding applications including:

1.Roundabouts and any other weld which ends at its starting point. A K337 Weld Timer Module to control the welding cycle duration can be installed.

2.Welds started on a run-out tab.

STOPPING SEQUENCES

As shipped, the travel stops when the “Stop” button is pressed, producing a small crater area.

When the end of the weld overlaps the beginning, changing the stopping sequence to stop the travel later spreads the crater over a longer area.

RECONFIGURING THE TRAVEL SEQUENCES

WARNING

ELECTRIC SHOCK can kill.

•Turn off input power to the welding power source using the disconnect switch before working on this equipment.

To change the travel sequence, turn off all input power to the NA-5 control box. Open the control box. The logic board is mounted on the back of the box in the upper right hand corner. To change the travel circuit for the various modes of starting and stopping, follow the information in the wiring diagram for the NA-5 being used. Table B.1 also shows information on reconfiguring the travel sequences.

NA-5

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Lincoln Electric NA-5NF, NA-5SF Setting Travel Starting and Stopping, Starting Sequences, Stopping Sequences
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NA-5S, NA-5N, NA-5SF, NA-5NF specifications

The Lincoln Electric NA-5NF, NA-5SF, NA-5N, and NA-5S are advanced welding helmets that are pivotal in enhancing the safety and efficiency of welders in various applications. These models are designed to provide exceptional protection and visibility, making them indispensable tools in the welding industry.

One of the main features of the NA-5 series is the auto-darkening filter technology. This feature allows the helmet to automatically adjust its shade based on the intensity of the arc. As the welder strikes an arc, the lens darkens instantaneously, shielding the eyes from harmful rays generated during the welding process. This functionality not only ensures safety but also enhances productivity, as welders do not need to manually flip the helmet up and down.

The helmets are equipped with a wide viewing area that allows for better visibility and precision while working. With a large lens, welders can easily monitor their work and surrounding environment, minimizing the risk of accidents. Additionally, the lightweight design of the NA-5NF, NA-5SF, NA-5N, and NA-5S provides comfort during extended periods of use, reducing neck strain and fatigue.

The NA-5 series is also well-regarded for its durability. Constructed from impact-resistant materials, these helmets can withstand the rigors of demanding work environments. This durability extends the lifespan of the helmet, making it a cost-effective investment for both professional and hobbyist welders.

Another notable characteristic is the adjustable sensitivity and delay settings found in certain models. These settings allow the user to customize the helmet based on their specific welding conditions. For instance, a welder can increase sensitivity for low-amperage tasks or adjust the delay to allow for a smoother transition from dark to light after completing a weld.

Furthermore, the helmets come with a reliable battery life, ensuring that they can be used for long periods without interruption. Some models also feature solar assist functionality, which helps recharge the auto-darkening filter, enhancing their overall efficiency.

In summary, the Lincoln Electric NA-5NF, NA-5SF, NA-5N, and NA-5S welding helmets represent a significant advancement in personal protective equipment for welders. Their combination of auto-darkening technology, wide viewing area, lightweight design, durability, and customizable settings makes them an excellent choice for anyone engaged in welding tasks. With these helmets, users can achieve greater safety and efficiency in their work, enabling them to focus on their craft with peace of mind.