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A-15

 

INSTALLATION

A-15

 

FIGURE A.14 – CONNECTION OF NA-5 TO DC-400 OR CV-400.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER SOURCE

 

 

TO NA-5 INPUT CABLE PLUG

 

C

 

 

B

N.E.

 

A

CONTROL

N.H.

32

 

31

CABLE

 

2

N.D. AND N.H.

 

4

 

GND

 

 

21

 

NEGATIVE

POSITIVE

 

 

N.D.

 

 

N.B. AND N.C.

 

 

N.A.

BOLT TO CABLES FROM NA-5

 

WIRE CONTACT ASSEMBLY

 

 

 

 

CONNECT TO WORK

THE DIAGRAM SHOWS ELECTRODE CONNECTED POSITIVE. TO CHANGE POLARITY, TURN POWER OFF, REVERSE THE ELECTRODE AND WORK LEADS AT THE POWER SOURCE AND POSITION THE SWITCH ON POWER SOURCE (IF EQUIPPED), TO PROPER POLARITY. REFER TO NA-5 OPERATING MANUAL FOR REQUIRED NA-5 CONTROL BOX POLARITY CONNECTIONS. ALSO REFER TO NOTE N.H.

FOR ADDITIONAL INSTALLATION INSTRUCTIONS, SEE NA-5 OPERATING MANUAL.

N.A. WELDING CABLES MUST BE OF PROPER CAPACITY FOR THE CURRENT AND DUTY CYCLE OF IMMEDIATE AND FUTURE APPLICATIONS.

N.B. EXTEND LEAD #21 USING #14 AWG OR LARGER INSULATED WIRE PHYSICALLY SUITABLE FOR THE INSTALLATION. AN S-16586- [LENGTH] REMOTE VOLTAGE-SENSING WORK LEAD IS AVAILABLE FOR THIS PURPOSE. CONNECT IT DIRECTLY TO THE WORK PIECE KEEPING IT ELECTRICALLY SEPARATE FROM THE WELDING WORK LEAD CIRCUIT AND CONNECTION. FOR CONVENIENCE, THIS EXTENDED #21 LEAD SHOULD BE TAPED TO THE WELDING WORK LEAD. (IF THE LENGTH OF WORK LEAD CIRCUIT IS SHORT, AND CONNECTIONS CAN BE EXPECTED TO BE RELIABLE, THEN CONTROL CABLE LEAD #21 DOES NOT NEED TO BE EXTENDED AND CAN BE DIRECTLY CONNECTED TO TERMINAL #21 ON THE TERMINAL STRIP. NOTE THAT THIS IS NOT THE PREFERRED CONNECTION BECAUSE IT ADDS ERROR TO THE NA-5 VOLTMETER READING.)

N.C.

TAPE UP BOLTED CONNECTION.

 

 

 

N.D.

CONNECT THE CONTROL CABLE GROUND LEAD TO THE FRAME TERMINAL MARKED

 

 

 

NEAR THE POWER SOURCE TERMINAL STRIP. THE POWER

SOURCE GROUNDING TERMINAL (MARKED AND LOCATED NEAR THE POWER SOURCE INPUT POWER CONNECTIONS) MUST BE PROPERLY CONNECTED TO ELECTRICAL GROUND PER THE POWER SOURCE OPERATING MANUAL. .

N.E. THE JUMPERS ON THE NA-5 VOLTAGE BOARD MUST BE CONNECTED AS FOLLOWS: CONNECT RED JUMPER TO PIN "S". CONNECT WHITE JUMPER TO PIN "B". WHEN USING NA-5 CONTROLS ABOVE CODE 8300 WITHOUT THE OPTIONAL DC-400 DIODE KIT OR CV-400,CVI-500 DIODE OPTIONS:

THE NA-5 INCH DOWN BUTTON WILL NOT OPERATE UNLESS A JUMPER IS CONNECTED BETWEEN THE TWO TAB TERMINALS, LABELED "AUTO", LOCATED ABOVE THE TRANSFORMER ON THE NA-5 VOLTAGE PC BOARD. THIS JUMPER, HOWEVER, WILL DISABLE THE COLD STARTING/AUTO STOP FEATURE OF THE NA-5, PERMITTING ONLY HOT STARTING TECHNIQUES TO BE USED.

N.G. FOR PROPER NA-5 OPERATION, THE ELECTRODE CABLES MUST BE SNUGGED UNDER THE CLAMP BAR ON THE LEFT SIDE OF THE NA-5 CONTROL BOX. N.H.* IF LEAD #21 IS TO BE CONNECTED TO THE TERMINAL STRIP, CONNECT TO THE #21 TERMINAL THAT MATCHES WORK POLARITY. THIS CONNECTION MUST

BE CHANGED WHENEVERTHE ELECTRODE POLARITY IS CHANGED.

* DOES NOT APPLY TO DC-400 BELOW CODE 9200 WITH POLARITY SWITCH.

CLEVELAND, OHIO U.S.A.

NA-5

Page 22
Image 22
Lincoln Electric NA-5NF, NA-5SF service manual Figure A.14 Connection of NA-5 to DC-400 or CV-400

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.