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F-12

TROUBLESHOOTING & REPAIR

F-12

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

 

 

 

 

 

 

PROBLEMS

 

 

POSSIBLE AREAS OF

 

RECOMMENDED

 

 

(SYMPTOMS)

 

 

MISADJUSTMENTS(S)

 

COURSE OF ACTION

 

 

 

 

 

 

 

 

 

MODE FUNCTION PROBLEMS

 

 

 

 

 

 

 

 

The speed and voltage controls do

 

1.

Check lights 1A and 1B located

1.

If lights 1A and /or 1B are OFF

not function. All of the mode lights

 

 

on the power board. They should

 

perform the DC Power Supply

function properly.

 

 

both be ON.

 

Test.

 

 

 

 

2.

If both lights 1A and 1B are ON

2.

Perform the T1 and T2

 

 

 

 

 

the control board may be faulty.

 

Transformer Test.

 

 

 

 

 

Replace.

 

 

 

 

 

 

 

 

3. The power board may be faulty.

 

 

 

 

 

 

Replace.

 

 

 

 

 

 

 

 

All the mode lights function properly.

 

1.

The control board may be faulty.

 

 

 

None of the speed controls operate

 

 

Replace.

 

 

 

properly.

 

 

 

 

 

 

 

All the mode lights function properly.

 

1.

The voltage board may be faulty.

 

 

 

None of the voltage controls operate

 

 

Replace.

 

 

 

properly.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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 Perform the DC Power Supply, Transformer Test

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.

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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.

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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.