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F-23

TROUBLESHOOTING & REPAIR

F-23

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

 

 

 

 

 

PROBLEMS

 

POSSIBLE AREAS OF

 

RECOMMENDED

 

 

(SYMPTOMS)

 

MISADJUSTMENTS(S)

 

COURSE OF ACTION

 

 

 

 

 

 

 

TRAVEL FUNCTION PROBLEMS

 

 

 

 

 

The travel will not function with the 1.

Make sure the jumper leads #691 1.

If light 7H, located on the logic

travel switch in the “Auto” postion.

and #692 are connected properly

board, does light when the auto-

The travel operates correctly with the

to the correct pins on the logic

matic travel is active check the

travel switch in the “Hand” position.

board. See wiring diagram.

CR2 relay. Normal coil resis-

 

 

 

 

 

tance is 10,000 ohms. The con-

 

2.

Check the travel switch (S2) and

tacts (terminals 2 and 4) should

 

 

 

associated leads for loose or

“close” when 110VDC is applied

 

 

 

faulty connections. See wiring

to the relay coil (terminals 1 +

 

 

 

diagram.

and 3 -).

 

 

 

3. Check light 7H located on the

 

 

 

 

 

logic board. This light should be

 

 

 

 

 

ON when the “Auto” travel is

 

 

 

 

 

active. If light 7H does not light

 

 

 

 

 

the logic board may be faulty.

 

 

The travel runs continuously when 1.

Make sure the jumper leads #691

1.

The 2CR relay may be faulty.

the travel switch is in the “Auto” posi

and #692 are connected properly

 

The contacts (terminals 2 and 4)

tion.

to the correct pins on the logic

 

may be stuck closed.

 

board. See wiring diagram.

 

 

 

 

2.

Check the associated leads for

2.

Check light 7H on the logic board.

 

misconnections. See wiring dia-

 

If light 7H is always ON the logic

 

gram.

 

board may be faulty.

 

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 216-383-2531 or 1-800-833-9353.

NA-5

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Lincoln Electric NA-5NF, NA-5SF service manual Troubleshooting & Repair

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.