Lincoln LN-742H manual K163 Undercarriage, K178-1 Mounting Platform, K589-1 Remote Control KIT

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C-2

ACCESSORIES

C-2

 

 

 

K163 UNDERCARRIAGE

The undercarriage includes casters, wheels, a handle, and related hardware. Casters are mounted at the front and wheels at the rear of the platform. The handle is bolted to the front of the platform so the wire feeder can be tilted back and wheeled like a two-wheel truck. Installation sheet M13424 is provided with the undercarriage.

K178-1 MOUNTING PLATFORM

This is a turntable type platform for mounting the LN- 742 to the top of Idealarc power sources. Bolt the platform to the lift bail per the instructions (M16260) supplied with the platform.

K589-1 REMOTE

CONTROL KIT

Provides remote potentiometer control of weld speed and arc voltage up to 16.4 ft (5.0 m) from the wire feeder. Power source must have remote control capability. (K856 Power Source Remote Kit required for CV-300/400-I, and smaller CV- Model machines below Code 9900.) Install K589-1 Kit per S20520 installation instructions provided with the kit.

K590-1 WATER

SOLENOID KIT

Includes a solenoid valve already attached to a mounting bracket and supply connection manifold assembly for easy installation on the upper rear panel of the LN-742 case. Also includes water-cooled gun tube fittings and self-sealing outlet and inlet quick- connectors for mounting to the front of the LN-742 case.

K590-2 WATER

CONNECTION KIT

This kit is the same as the K590-1 except that it does not include the solenoid for water coolers requiring continuous flow.

K857 REMOTE VOLTAGE

CONTROL KIT

Installs on the side of the LN-742 control box cover and gives voltage control at the wire feeder.

K857 can be installed on the LN-742 when it is used with newer Lincoln power sources that are equipped with a 6-socket ms-type receptacle or K864 14-pin connector adapter for connection of the plug on the 28 ft (8.5 m) control cable of the K857. See the instructions (S19103) included with the kit.

FLUX SYSTEM COMPONENTS

The flux system is available to permit the LN-742 to be used for submerged arc welding. It is comprised of the components described below.

K58 MAGNETIC SEPARATOR

The K58 is a permanent magnet type separator designed to fit the top of the standard fill funnel of the continuous flux feeding system.

The purpose of the separator is to remove magnetic materials such as mill scale and any other extraneous magnetic materials which may have been recovered along with the flux to be processed.

It is important to remove these magnetic particles from the flux which is to be used in the continuous flux feeding systems. If the magnetic material is not removed it will gather around the nozzle of the gun and impede or shut off the flux flow when making relatively long welds or welding continuously. The magnetic particles can also cause porosity in the weld.

K310 FLUX SCREEN

The unit was designed to fit the top of either the standard fill funnel or a K58 magnetic separator. The unit has a steel screen with 0.065 to 0.075 in. openings and an air vibrator attached to the frame. The vibrator can be used with air line pressures ranging from 20 through 100 psi.

For ease of handling, the user should connect the incoming air line to the 1/8 in. pipe elbow with the aid of a quick disconnect type air coupling.

It is very important that reclaimed flux to be used in the continuous flux feeding system be passed through the K310 screen or its equivalent.

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 WeldTable C.1 LN-742 Accessories AccessoriesGeneral 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 NumbersRoutine Maintenance MaintenancePeriodic 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.
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