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F-19

TROUBLESHOOTING & REPAIR

F-19

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

 

 

 

 

 

PROBLEMS

 

POSSIBLE AREAS OF

 

RECOMMENDED

 

 

(SYMPTOMS)

 

MISADJUSTMENTS(S)

 

COURSE OF ACTION

 

 

 

 

 

 

 

 

 

MODE FUNCTION PROBLEMS

 

 

 

 

 

 

 

During the welding sequence the

 

1. If the optional start timer is

 

 

weld light does not go ON.

 

installed determine if the start

 

 

 

 

 

mode is timing out. If the

 

 

 

 

 

sequence stays in the “start”

 

 

 

 

 

mode the start timer may be

 

 

 

 

 

faulty.

 

 

 

 

 

2. If the start module is OK and the

 

 

 

 

 

weld light does not go ON the

 

 

 

 

 

logic board may be faulty.

 

 

 

 

 

Replace.

 

 

 

 

 

3. If a start module is NOT used

 

 

 

 

 

make sure the jumper plug is

 

 

 

 

 

installled in the procedure board

 

 

 

 

 

receptacle.

 

 

While welding the weld mode is

1. The weld timer module may be

1. Check the lead harness between

omitted in the welding sequence.

faulty. Replace.

the weld timer and the procedure

The weld timer is set for a longer

 

board for loose or faulty connec-

time than zero seconds.

 

tions.

The weld timer does not time out.

1. Set the burnback timer for a value 1.

Check the lead harness between

the unit stays in the weld mode.

greater than zero seconds. Start

the weld timer and the procedure

 

the weld sequence and then stop

board for loose or faulty connec-

 

it with the stop button. Check to

tions.

 

see if the unit returns to the nor-

 

 

mal idle state.(Strike light ON and

 

 

“Hot Electrode” light OFF).

 

 

• If the weld mode ends and

 

 

the unit returns to the nor-

 

 

mal idle state, the weld

 

 

timer module may be

 

 

faulty.

 

 

• If the unit does NOT return

 

 

to the normal idle state the

 

 

procedure 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 Problems

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.