Lincoln LN-742 READI-REELS a K438 READI-REEL Adapter Must be Used, Figure B.7 K1504-1 Coil Reel

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B-11

OPERATION

B-11

 

 

 

WIRE REEL LOADING – 50 AND 60 LB COILS (K1524-1 UNIVERSAL WIRE REEL STAND)

TO MOUNT A 50 to 60 lb (22.7 to 27.2 kg) COIL: (USING K1504-1 COIL REEL) (FOR 50 to 60 lb

READI-REELS A K438 READI-REEL ADAPTER MUST BE USED.)

The spindle should be located in the UPPER mount- ing hole.

1.With the K-1504-1 Coil Reel mounted on the 2 in. (51 mm) spindle (or with reel laying flat on the floor) loosen the spinner nut and remove the reel cover. See Figure B.7.

2.Before cutting the tie wires, place the coil of elec- trode on the reel so it unwinds from the bottom as the reel rotates.

3.Tighten the spinner nut against the reel cover as much as possible by hand, using the reel cover spokes for leverage. DO NOT hammer on the spinner nut arms.

4.Cut and remove only the tie wire holding the free end of the coil. Hook the free end around the rim of the reel cover and wrap it around to secure. Cut and remove the retaining tie wires.

FIGURE B.7 – K1504-1 COIL REEL.

SPINNER NUT

COVER

PLATE

SLOTS

CARDBOARD

COIL LINER

COIL

TIE WIRE

SPRING

LOADED ARM

REEL

CAUTION

Always be sure the free end of the coil is securely held while the tie wires are being cut and until the wire is feeding through the drive rolls. Failure to do this will result in “backlash” of the coil, which may tangle the wire. A tangled coil will not feed, so it must either be untangled or discarded.

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5.Be sure the coil is engaged with the spindle brake pin and the Release Bar and Retaining Collar “pops up” and that the collar retainers fully engage the retaining groove on the spindle.

LN-742 & LN-742H

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Contents LN-742 & LN-742H Wire Feeders California Proposition 65 Warnings SafetyElectric Shock can kill Cylinder may explode if damaged Sûreté Pour Soudage a L’Arc Précautions DE SûretéThank You Table of Contents Technical Specifications LN-742 InstallationInput Cable Connections Mounting LocationFigure A.2 Strain Relief Clamp PIN Work Cable Table A.1 Work Lead SpecificationsGUN and Cable Assemblies GUN Cable ConnectionsFigure A.5 Water Connections Water Connections For Water Cooled GunsFigure A.6 Shielding GAS Hookup Gmaw Shielding GAS HookupOperation Safety PrecautionsOperating Instructions General DescriptionFigure B.1 Wire Feeder Controls Controls and SettingsDrive Roll Installation Acceleration SettingChanging 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 Figure B.4 Idle Roll Pressure Setting Idle Roll Pressure SettingFigure B.5a Threaded Locking Collar Wire LoadingInnershield Coils Electrode Feeding and Brake AdjustmentTo Mount a 50 or 60 LB Coil Adjustable Wire Reel BrakeFigure B.7 K1504-1 Coil Reel READI-REELS a K438 READI-REEL Adapter Must be UsedMaking a Weld Wire Reel ChangingTable C.1 LN-742 Accessories AccessoriesGeneral K163 Undercarriage K589-1 Remote Control KITK178-1 Mounting Platform Solenoid KITWelding Guns Power Input CablesSPINDLES, STANDS, Adapters Attaching the Wire Reel Stand Table C.2 Drive Roll KIT Numbers Drive Roll KitsRoutine Maintenance MaintenancePeriodic Maintenance HOW to USE Troubleshooting Guide TroubleshootingTroubleshooting 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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