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F-13

TROUBLESHOOTING & REPAIR

F-13

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

 

 

 

 

 

 

PROBLEMS

 

 

 

POSSIBLE AREAS OF

 

RECOMMENDED

 

(SYMPTOMS)

 

 

 

MISADJUSTMENTS(S)

 

COURSE OF ACTION

 

 

 

 

 

 

 

 

 

 

 

MODE FUNCTION PROBLEMS

 

 

 

 

 

 

 

 

 

 

Only the strike mode functions, when

1.

The logic board may be faulty.

 

 

 

 

the unit is at idle, regardless of the

 

 

Replace.

 

 

 

 

selector switch position.

 

 

 

 

 

 

 

 

 

 

 

2.

The procedure board may be

 

 

 

 

 

 

 

 

faulty.

 

 

 

 

 

 

 

 

 

 

Only the strike mode functions while

 

1.

While the unit is welding check

. If light 7D is NOT lit, when weld

 

welding. The unit stays in the strike

 

 

light 7D on the logic board. It

 

current is present,

connect a

 

mode and does not progress through

 

should be ON when welding cur-

 

jumper wire from terminal #528 to

 

the welding sequence.

 

 

 

rent is present. If light 7D is ON

 

#500 on terminal strip TS1. See

 

 

 

 

 

the logic board may be faulty.

 

wiring diagram. If light 7D does

 

 

 

 

 

 

 

light check the CR4 reed switch

 

 

 

 

3.

If light 7D is NOT lit when weld

 

and associated leads and connec-

 

 

 

 

 

current is present make sure the

 

tions. See wiring diagram.

 

 

 

 

 

weld cables have been properly

 

 

 

 

 

 

 

 

routed through the cable clamp

2.

If 7D does NOT light, with the

 

 

 

 

 

on the left side of the control box.

 

jumper wire in place, check the

 

 

 

 

 

 

 

#528 lead and the #500 lead

 

 

 

 

 

 

 

between the TS1 terminal strip

 

 

 

 

 

 

 

and the logic board. See wiring

 

 

 

 

 

 

 

diagram.

 

 

 

 

 

 

 

3. The logic board may be faulty.

 

 

 

 

 

 

 

Replace.

 

 

 

 

 

 

 

 

 

The strike light is OFF and neither

 

1.

Check light 7D on the logic board.

1.

If light 7D is ON check the CR4

 

strike control functions. The other

 

 

If it is off the logic board may be

reed switch and associated leads.

 

mode lights work. The unit will not

 

 

faulty. Replace.

See wiring diagram.

 

 

feed wire when the start button is

 

 

 

 

 

 

 

pressed.

 

 

2.

If the start light is on all the time

 

 

 

 

 

 

 

 

the start board (if used) may be

 

 

 

 

 

 

 

 

faulty. Replace or install jumper

 

 

 

 

 

 

 

 

plug in procedure board.

 

 

 

 

 

 

 

3.

If the crater light is on all the time

 

 

 

 

 

 

 

 

the crater board (if used) may be

 

 

 

 

 

 

 

 

faulty. Replace or install jumper

 

 

 

 

 

 

 

 

plug in procedure board.

 

 

 

 

 

 

 

4.

If the weld light is on all the time

 

 

 

 

 

 

 

 

the logic board may be faulty.

 

 

 

 

 

 

 

 

Replace.

 

 

 

 

 

 

 

 

 

 

 

 

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

Page 66
Image 66
Lincoln Electric NA-5NF, NA-5SF service manual Problems Possible Areas Recommended Symptoms

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.