Lincoln Electric NA-5NF, NA-5SF service manual Power Supply to Control BOX Connections

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

1 152
Download 152 pages 30.16 Kb
Page 14
Image 14

A-7

INSTALLATION

A-7

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

The “F” models do not include the 4 ft (1.2

m)lengths of electrode cable as standard. If you are not using a K335 or K338 exten- sion cable for the NA-5NF or NA-5SF, order an appropriate length of the needed elec- trode cable. Connect it between the wire contact assembly and the control cable assembly as described above.

POWER SUPPLY TO CONTROL BOX CONNECTIONS

At the NA-5 control box, in order to activate the NA-5 weld current sensing switch, the electrode cables of the control cable assembly must be placed under the clamp bar on the left-hand side of the control box, as shown in Figure A.6. This is required for proper operation of the reed switch. The nuts holding the clamp bar in place need only to be pulled up snug. Do not overtighten. If a carriage is used, the electrode cables should also be clamped to it with the cable clamp supplied on the carriage. Do not clamp the control cable under the travel carriage clamp but route it over its top.

FIGURE A.6 – CONTROL BOX

ELECTRICAL CONNECTIONS.

CLAMP

BAR

FROM

POWER

SOURCE

TO

WELDING

HEAD

Insert the polarized connector of the K215 or K597* control cable into the matching receptacle on the side of the control box.

With the power source off, connect the control cable assembly to the power source as follows:

1.If using the multi-process power source (SAM, SA-800, SAF-600, DC-400, DC-600, DC-1000, or DC- 1500 types), be sure it is properly set for the welding process being used per the connection diagram (Figures A.8 to A.14).

2.Connect the K215 control cable leads to the power source terminal strip exactly as specified on the connection diagram.* Include all jumpers on the terminal strips as shown on the diagram. Do not put on any other jumpers. If currents or duty cycles higher than 1000 amps at 80% duty cycle will be used, add additional electrode cables to the K215 assembly per Table A.1.

3Depending on the power source and the process to be used, the jumpers on the NA-5 voltage board may have to be changed. As shipped, the NA-5 is connected for use with the DC-400, DC-600, DC-1000, and DC-1500 type power sources. For other power sources, refer to the appropriate connection diagram and to IM305 Sec. T3.6.

4.Connect work leads of sufficient size and length per Table A.1. between the “To Work” stud on the power source and the work. Be sure the connection to the work makes a tight and clean metal-to-metal contact.

*The K597 cable assembly has a 14-pin MS-type connector for use with later model Lincoln CV power sources.

Return to Section TOC

NA-5

Page 14
Image 14
Lincoln Electric NA-5NF, NA-5SF service manual Power Supply to Control BOX Connections

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.