A-4

 

 

INSTALLATION

A-4

 

 

 

 

 

 

 

 

FIGURE A.3 – LN-742 WIRE FEEDER TO LINCOLN POWER SOURCE – CONNECTION DIAGRAM.

 

 

 

 

 

 

 

 

 

 

 

WARNING TURN INPUT POWER OFF

 

 

 

 

 

BEFORE CONNECTING THE

 

 

 

 

 

LN-742 WIRE FEEDER.

 

ELECTRIC

SHOCK

CAN KILL

LINCOLN

POWER SOURCE

14PIN

AMPHENOL

+

-

LN-742

WIRE FEEDER

 

 

TO WORK

LN-742

ELECTRODE CABLE INPUT CABLE

ASSEMBLY

 

K=42

 

K=42

 

I=41

 

I=41

C=2

H=21

H=21

C=2

D=4

G=75

G=75

D=4

E=77

F=76

F=76

E=77

14-SOCKET BOX RECEPTACLE, FRONT VIEW AND 14-PIN CABLE PLUG, REAR VIEW

14-SOCKET BOX RECEPTACLE, REAR VIEW AND 14-PIN CABLE PLUG, FRONT VIEW

PIN

LEAD

FUNCTION

 

 

 

C

2

TRIGGER CIRCUIT

D

4

TRIGGER CIRCUIT

 

 

E77 OUTPUT CONTROL

F76 OUTPUT CONTROL

G75 OUTPUT CONTROL

H

21 WORK

I41 42V AC

K

42

42V AC

FUNCTIONS ARE LISTED FOR REFERENCE

ONLY AND EACH MAY OR MAY NOT BE

PRESENT IN YOUR EQUIPMENT.

CLEVELAND, OHIO U.S.A

LN-742 & LN-742H

Page 11
Image 11
Lincoln LN-742H manual Pin

LN-742, LN-742H specifications

The Lincoln LN-742H and LN-742 are renowned models in the realm of industrial welding equipment, specifically designed to cater to the needs of professional welders and fabricators. These machines stand out for their robustness, advanced technology, and ease of use, making them popular choices in various industries, including construction, automotive, and manufacturing.

One of the main features of the Lincoln LN-742H and LN-742 is their powerful Arc control capabilities. The machines are equipped with innovative technology that allows for consistent arc stability, which is crucial for achieving high-quality welds. The adjustable arc force enables users to tailor the welding parameters to their specific applications, facilitating optimal penetration and minimal spatter.

The LN-742H model is particularly notable for its enhanced portable design, making it easier for operators to transport the machine to different job sites. This portability does not compromise its power, as it offers a high output suitable for both thin and thicker materials. Moreover, the LN-742 model comes with a highly efficient cooling system that ensures the machine runs smoothly without overheating, even during prolonged use.

Both models feature an intuitive user interface that simplifies the welding process. The digital display offers real-time feedback on the welding parameters, allowing welders to make precise adjustments as needed. This feature is especially beneficial for beginners, who may be unfamiliar with optimal welding settings.

Another impressive characteristic of the Lincoln LN-742H and LN-742 machines is their versatility. They support various welding processes, including MIG, TIG, and stick welding, giving users the flexibility to choose the most suitable method for their projects. This adaptability makes these models an ideal solution for shops that handle a wide range of welding tasks.

Durability is a significant consideration in the design of the LN-742H and LN-742, as they are built with high-quality materials that withstand heavy use and challenging conditions. The rugged construction extends the lifespan of the machines, reducing the need for frequent repairs and servicing.

In summary, the Lincoln LN-742H and LN-742 welding machines exemplify advanced engineering and user-focused design. Their combination of powerful performance, portability, user-friendly features, and versatile applications makes them essential tools for professionals in the welding industry, paving the way for excellence in metal fabrication and repair.