Lincoln LN-742H manual Installation, Technical Specifications LN-742

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A-1

INSTALLATION

A-1

TECHNICAL SPECIFICATIONS – LN-742

INPUT VOLTAGE

40 to 42V ±10%, 50/60 Hz, 4.0 Amps

WIRE FEED SPEED

SYSTEM

LN-742

LN-742H

WIRE SPEED RANGE

50 in. to 770 in. per minute (1.25 to 19.5 m/min) 80 in. to 1200 in. per minute (2.00 to 30.5 m/min)

 

 

 

WIRE DIAMETERS

 

SYSTEM

ELECTRODE

 

DIAMETER

 

LN-742

SOLID

 

0.025 in. through 1/16 in. (0.6 through 1.6 mm)

 

 

 

 

 

 

LN-742H

SOLID

 

0.025 in. through 0.045 in. (0.6 through 1.2 mm)

 

LN-742

CORED

 

0.045 in. through 3/32 in. (1.2 through 2.4 mm)

 

LN-742H

CORED

 

0.035 in. (0.9 mm)

 

 

 

 

 

TEMPERATURE RATING (ALL MODELS)

OPERATING

STORAGE

-4˚F to 104˚F (-20˚C to +40˚C)

-40˚F to 104˚F (-40˚C to +40˚C)

 

 

PHYSICAL DIMENSIONS

 

 

 

 

 

 

 

 

BOTH LN-742 AND LN-742H

LENGTH

 

HEIGHT

TOTAL WEIGHT

 

WIDTH

LESS ELECTRODE

 

 

 

 

 

 

 

2 ROLL FEEDER

9.62 in.

9.76 in.

10.89 in.

24 lbs

 

WITHOUT WIRE STAND

(244 mm)

(247 mm)

(277 mm)

(11.0 kg)

 

 

 

 

 

 

 

2 ROLL FEEDER

20.68 in.

9.76 in.

17.00 in.

34 lbs

 

WITH WIRE STAND (K377)

(525 mm)

(247 mm)

(432 mm)

(15.5 kg)

 

 

 

 

 

 

 

4 ROLL FEEDER

10.60 in.

11.60 in.

11.11 in.

28.7 lbs

 

WITHOUT WIRE STAND

(269 mm)

(295 mm)

(282 mm)

(13.1 kg)

 

 

 

 

 

 

 

4 ROLL FEEDER

21.66 in.

11.60 in.

17.00 in.

38.7 lbs

 

WITH WIRE STAND (K377)

(550 mm)

(295 mm)

(432 mm)

(17.7 kg)

 

 

 

 

 

 

ENVIRONMENTAL RATING (ALL MODELS)

IP21 (IEC 529)

LN-742 & LN-742H

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Contents LN-742 & LN-742H Wire Feeders Safety California Proposition 65 WarningsElectric Shock can kill Cylinder may explode if damaged Précautions DE Sûreté Sûreté Pour Soudage a L’ArcThank You Table of Contents Installation Technical Specifications LN-742Mounting Location Input Cable ConnectionsFigure A.2 Strain Relief Clamp PIN Table A.1 Work Lead Specifications Work CableGUN and Cable Assemblies GUN Cable ConnectionsWater Connections For Water Cooled Guns Figure A.5 Water ConnectionsGmaw Shielding GAS Hookup Figure A.6 Shielding GAS HookupSafety Precautions OperationOperating Instructions General DescriptionControls and Settings Figure B.1 Wire Feeder ControlsAcceleration Setting Drive Roll InstallationChanging Drive Rolls for TWO- Roll Wire Feeders English or Metric Speed Display UnitsGuide Tube Detail Changing Drive Rolls for FOUR- Roll Wire Feeders Figure B.3 Installing Drive Rolls on a FOUR-ROLL Feeder Idle Roll Pressure Setting Figure B.4 Idle Roll Pressure SettingWire Loading Figure B.5a Threaded Locking CollarElectrode Feeding and Brake Adjustment Innershield CoilsAdjustable Wire Reel Brake To Mount a 50 or 60 LB CoilREADI-REELS a K438 READI-REEL Adapter Must be Used Figure B.7 K1504-1 Coil ReelWire Reel Changing Making a WeldGeneral AccessoriesTable C.1 LN-742 Accessories K589-1 Remote Control KIT K163 UndercarriageK178-1 Mounting Platform Solenoid KITPower Input Cables Welding GunsSPINDLES, STANDS, Adapters Attaching the Wire Reel Stand Drive Roll Kits Table C.2 Drive Roll KIT NumbersPeriodic Maintenance MaintenanceRoutine Maintenance Troubleshooting HOW to USE Troubleshooting GuideTroubleshooting Troubleshooting Troubleshooting Troubleshooting Troubleshooting Troubleshooting Diagrams LN-742 & LN-742H LN-742 & LN-742H LN-742 & LN-742H LN-742 & LN-742H Precaucion Warnung

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.