Lincoln Electric LF-72/74 service manual AA-15, Loading 16 to 44 lb .3 20kg Spools See figure AA.8

Page 57

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AA-15

INSTALLATION

AA-15

 

 

 

 

 

 

 

WIRE REEL LOADING

 

 

3. Re-install the retaining collar. Make sure that the

 

 

 

 

release bar snaps out and that the retaining collar

 

 

 

 

fully engages the groove on the spindle.

 

 

WARNING

 

 

 

 

 

 

 

 

• Keep hands, hair, clothing and tools away from

 

FIGURE AA.10

 

Retaining

 

 

 

 

 

 

rotating equipment.

 

 

 

 

 

• Do not wear gloves when

threading wire or

 

 

 

Collar

changing wire spool.

 

 

 

 

 

 

• Only qualified personnel should install, use or service this equipment.

-----------------------------------------------------------------------

 

 

Loading 10 to 15 lb. (4.5 – 6.8kg) Spools

 

 

A K468 spindle adapter is required for loading 2" wide

Loading 30 lb. (13.6 kg) Readi-Reels

spools on 2" (51mm) spindles. Use a K468-1 spindle

adapter for loading 2-1/2" (64mm) wide spools. (See

(See Figure AA.11)

figure AA.9 and figure AA.10)

A K363-P Readi-Reel adapter is required for loading

 

1. Squeeze the release bar on the retaining collar and

these spools on 2" (51mm) spindles.

remove it from the spindle.

1.

Squeeze the release bar on the retaining collar and

2. Place the spindle adapter on the spindle, aligning

the spindle brake pin with the hole in the adapter.

 

remove it from the spindle.

3. Place the spool on the spindle and align the adapter

2.

Place the Readi-Reel adapter on the spindle, align-

brake tab with one of the holes in the back side of

 

ing the spindle brake pin with one of the holes in the

the spool. An indicator mark on the end of the spin-

 

adapter.

dle shows the orientation of the brake tab. Be cer-

3.

Re-install the retaining collar. Make sure that the

tain the wire feeds off of the spool in the proper

 

release bar snaps out and that the retaining collar

direction.

 

fully engages the groove on the spindle.

4. Re-install the retaining collar. Make sure that the

4.

Rotate the spindle and adapter until the retaining

release bar snaps out and that the retaining collar

 

spring is at the 12 o’clock position.

fully engages the groove on the spindle.

5.

Position the Readi-Reel so that electrode de-reels in

FIGURE AA.9

 

 

the proper direction.

Adapter

6.

Set one of the Readi-Reel inside cage wires on the

 

slot in the retaining spring.

 

 

 

7.

Lower the Read-Reel to depress the retaining

 

 

spring and align the other inside cage wires with the

 

 

grooves in the adapter.

 

8.

Slide the cage all way onto the adapter until the

 

 

retaining spring "pops up" fully.

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Spindle Placement

The wire reel stand provides two mounting locations for the spindle. Each mounting location consists of a tube in the center of the mast and locating slots.

Loading 16 to 44 lb. (7.3 – 20kg) Spools (See figure AA.8)

1.Squeeze the release bar on the retaining collar and remove it from the spindle.

2.Place the spool on the spindle, aligning the spindle brake pin with one of the holes in the back side of the spool. An indicator mark on the end of the spin- dle shows the orientation of the brake holding pin. Be certain the wire feeds off of the spool in the prop- er direction.

Removing a Readi-Reel

1.To remove a Readi-Reel from the an adapter, depress the retaining spring with a thumb while pulling the Readi-Reel cage from the adapter with both hands. Do not remove the adapter from the spindle.

LF-72/74

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Contents LF-72/74 Safety Electric Shock can kill Iii Welding Sparks can cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Table of Contents Installation SectionSection A-1 Amp Rating Duty Cycle InstallationSafety Precaution LocationMounting Swivel Mount Bench MountBoom Mount SuspendedWeld Cable Sizes Weld Cable Connection Coaxial Weld CablesINSTALLATIONA-7 Analog Control CableControl Cable Connections Miller Power Source Lincoln Wire Feeder Analog Miller Control Cable Adapter K2335-1Pin Function Welding GUN/WIRE Feeder Trigger Connector Wire Drive SystemsRemote Sense Lead Specifications High Frequency ProtectionMagnum GUN and Cable Assemblies Welding GUNS, Torches and ACCES- SoriesProcedure for Changing Drive and Idle Roll Sets Wire Drive ConfigurationRolls.FIGURE A.4 Pressure ARM Adjustment Gun Receiver For use With BushingSet the pressure arm as follows See Figure A.6 Wire Reel Loading Figure A.9 Weld Wire RoutingShielding GAS Connection To install Lincoln conduit See Figure A.10b Installing ElectrodeConduit Kits For Codes 11209, 11210, 11211 and aboveFigure A.12b Aluminum Wire PreparationsBase Model Bench Model Standard Duty Bench Model Heavy Duty INSTALLATIONA-18Cable Typical System ConfigurationsLF-72/74 Section B-1 Operation SectionGAS Input Work Connection OperationCommon Welding Abbreviations Product DescriptionRecommended Processes Figure B.1 Case Front Controls Description Front Panel Controls and ConnectionsCold FEED/GAS Purge Switch Burnback and Postflow Timer KITStep Trigger Interlock Switch Remote Voltage Control KITTrigger Connector 5-PIN Amphenol Wire Feed Speed KnobGUN Receiver Bushing K1500-2 Trigger InterlockSection C-1 Accessories SectionOptional Kits AccessoriesLF-72s Accessories Key LF-72/74 Section D-1 Maintenance SectionMaintenance MaintenanceCalibration Specification Routine MaintenanceFigure D.1 Figure D.3 Major Component Location Section AA Section AA-1WFS Range Wire Sizes AA-2Model Figure AA.1 AA-3AA-4 AA-5 Coaxial Weld Cable AA-6INSTALLATIONAA-7 AA-7K1797-xx AA-8 AA-9 Drive Roll Kits Steel or Cored WiresFigure AA.3 AA-10Changing the Gun Receiver Bushing AA-11Lation or changing drive rolls and/or Guides AA-12 Assembly of Drive Rolls and Wire GuidesSet the pressure arm as follows See Figure AA.8 AA-13AA-14 Loading 16 to 44 lb .3 20kg Spools See figure AA.8 AA-15Figure AA.11 AA-16Figure AA.12a AA-17Figure AA.12b AA-18AA-19 Common Equipment SET-UPS AA-20INSTALLATIONAA-20AA-21 Figure AA.15 High Volume ProductionAA-22 Figure AA.16 Portable WeldingSection BB Section BB-1Fcaw Innershield or Outershield BB-2BB-3 Required EquipmentFigure BB.1 Case Front Controls Description BB-4BB-5 K2426-1 and K2426-2 modelsK2426-3 model BB-6 SwitchSection CC-1 CC-2 CC-3 CC-4 CC-5 CC-6 Section DD Section DD-1Nal wiring To verify the wire feed speedWhen inching with gun trigger, electrode WFS knob setting Could remain energized Several secondsDD-3 MAINTENANCEDD-3DD-4 Figure DD.3 Major Component LocationSection E-1 Theory of Operation SectionReturn to Section Theory of OperationControl Board LF-72/74 Section F-1 Troubleshooting & Repair SectionHOW to USE Troubleshooting Guide Troubleshooting & RepairPC Board Troubleshooting Procedures Function Problems Function Problems Troubleshooting & Repair Test Description Drive Motor and Tach Feedback TestTest Procedure GAS Solenoid Test Troubleshooting and RepairFigure F.3 Leads 552, 552B Test ProcedureDiode Bridge Test 552B + 552A Wire Speed Potentiometer Test 14F-14 Wire Speed Potentiometer TestPC Board Removal and Replacement Removal Procedure Replacement Procedure Control PC Board Removal and Replacement ProcedureTroubleshooting and Repair Procedure Wire Drive Motor and Gear BOX Removal and ReplacementProcedure Replacement Procedures Operation Verification SET UPLF-72/74 Section G-1 Electrical Diagrams SectionLF-72/74 Electrical DiagramsTimer KIT Board Normal Speed Micro Internal panel Motor Connecter Summary High Torque Setting engages Schematic Common Analog Control PC Board G4559 Sheet Electrical Diagrams Electrical Diagrams PC Board Assembly Common Analog Control G4560-2E0
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