Lincoln Electric LF-72/74 service manual Accessories, CC-2

Page 72

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

CC-2

 

ACCESSORIES

 

 

CC-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OPTIONAL KITS:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Includes: 10k potentiometer,

 

 

 

 

 

 

 

K2329-1

 

Remote Voltage Control Kit.

 

harness, knob and decal with

 

 

 

 

 

 

 

 

 

 

 

a 0-10 scale and mounting

 

 

 

 

 

 

 

 

 

 

 

hardware.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Includes: Panel and harness

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

K2330-1

 

Timer Kit.

 

for adjusting burnback and

 

 

 

 

 

 

 

 

 

 

 

postflow times.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Includes: Wire Reel Stand for

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

K2328-1

 

Standard Duty Wire Reel Stand.

 

up to 44 lbs (20 kg) spools,

 

 

 

 

 

 

 

 

 

 

 

Spindle and mounting hard-

 

 

 

 

 

 

 

 

 

 

 

ware.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

K2331-1

 

Lift Bail Kit.

 

Includes: Insulated lift bail

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

for use with K2328-1

 

and hardware.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

K2332-1

 

Swivel Kit.

 

Includes: Swivel adapter and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(for use with K2328-1 Standard

 

mounting hardware for attach-

 

 

 

 

 

 

 

 

 

Duty Bench Models)

 

ing to a power source lift bale.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Includes: Coaxial weld cable

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

of length "xx". Ends of the

 

 

 

 

 

 

 

K1796-xx

 

Co-Axial Power Cable.

 

weld cable have lug connec-

 

 

 

 

 

 

 

 

 

 

 

tions. Use for Pulse or STT

 

 

 

 

 

 

 

 

 

 

 

welding.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Includes: Twist-Mate to Lug

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2/0 cable 14' (1.2m) long with

 

 

 

 

 

 

 

K1803-1

 

Work and Feeder Cables

 

Ground Clamp, and Twist-

 

 

 

 

 

 

 

 

 

Package.

 

Mate to Lug 2/0 Cable 9'

 

 

 

 

 

 

 

 

 

 

 

(2.7m) long.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

K1840-xx

 

Weld Power Cable, Twist-Mate to

 

Includes: Twist-Mate to Lug,

 

 

 

 

 

 

 

 

 

Lug.

 

1/0 cable of length "xx".

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Includes: Twist-Mate to Twist-

 

 

 

 

 

 

 

 

 

 

 

Mate, 1/0 Cable for 25' (7.6m)

 

 

 

 

 

 

 

K1841-xx

 

Weld Power Cable,

 

cables.

 

 

 

 

 

 

 

 

 

Twist-Mate to Twist-Mate.

 

Includes: Twist-Mate to Twist-

 

 

 

 

 

 

 

 

 

 

 

Mate, 2/0 Cable for 50'

 

 

 

 

 

 

 

 

 

 

 

(15.2m) cables.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Includes: Lug to Lug, 3/0

 

 

 

 

 

 

 

 

 

 

 

Cable of length "xx" for

 

 

 

 

 

 

 

K1842-xx

 

Weld Power Cable, Lug to Lug.

 

lengths up to 60' (18.3m).

 

 

 

 

 

 

 

 

 

 

 

Lug to Lug, 4/0 Cable of

 

 

 

 

 

 

 

 

 

 

 

length "xx" for lengths greater

 

 

 

 

 

 

 

 

 

 

 

than 60' (18.3m).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LF-72/74

Page 71 Page 73
Image 72
Page 71 Page 73
Contents LF-72/74 Safety Electric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcMaster Table of Contents for ALL Sections Table of Contents Installation SectionSection A-1 Installation Amp Rating Duty CycleSafety Precaution LocationMounting Bench Mount Swivel MountBoom Mount SuspendedWeld Cable Sizes Coaxial Weld Cables Weld Cable ConnectionINSTALLATIONA-7 Analog Control CableControl Cable Connections Miller Power Source Lincoln Wire Feeder Analog Miller Control Cable Adapter K2335-1Pin Function Wire Drive Systems Welding GUN/WIRE Feeder Trigger ConnectorRemote Sense Lead Specifications High Frequency ProtectionWelding GUNS, Torches and ACCES- Sories Magnum GUN and Cable AssembliesProcedure 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 Weld Wire Routing Figure A.9Shielding GAS Connection Installing Electrode To install Lincoln conduit See Figure A.10bConduit Kits For Codes 11209, 11210, 11211 and aboveAluminum Wire Preparations Figure A.12bINSTALLATIONA-18 Base Model Bench Model Standard Duty Bench Model Heavy DutyTypical System Configurations CableLF-72/74 Operation Section Section B-1Operation GAS Input Work ConnectionCommon Welding Abbreviations Product DescriptionRecommended Processes Front Panel Controls and Connections Figure B.1 Case Front Controls DescriptionBurnback and Postflow Timer KIT Cold FEED/GAS Purge SwitchStep Trigger Interlock Switch Remote Voltage Control KITWire Feed Speed Knob Trigger Connector 5-PIN AmphenolGUN Receiver Bushing K1500-2 Trigger InterlockAccessories Section Section C-1Accessories Optional KitsLF-72s Accessories Key LF-72/74 Maintenance Section Section D-1Maintenance MaintenanceCalibration Specification Routine MaintenanceFigure D.1 Figure D.3 Major Component Location Section AA-1 Section AAWFS Range Wire Sizes AA-2Model AA-3 Figure AA.1AA-4 AA-5 AA-6 Coaxial Weld CableINSTALLATIONAA-7 AA-7K1797-xx AA-8 Drive Roll Kits Steel or Cored Wires AA-9AA-10 Figure AA.3AA-11 Changing the Gun Receiver BushingLation or changing drive rolls and/or GuidesAssembly of Drive Rolls and Wire Guides AA-12AA-13 Set the pressure arm as follows See Figure AA.8AA-14 AA-15 Loading 16 to 44 lb .3 20kg Spools See figure AA.8AA-16 Figure AA.11AA-17 Figure AA.12aAA-18 Figure AA.12bAA-19 AA-20INSTALLATIONAA-20 Common Equipment SET-UPSFigure AA.15 High Volume Production AA-21Figure AA.16 Portable Welding AA-22Section BB-1 Section BBBB-2 Fcaw Innershield or OutershieldRequired Equipment BB-3BB-4 Figure BB.1 Case Front Controls DescriptionBB-5 K2426-1 and K2426-2 modelsK2426-3 model Switch BB-6Section CC-1 CC-2 CC-3 CC-4 CC-5 CC-6 Section DD-1 Section DDTo verify the wire feed speed Nal wiringWhen inching with gun trigger, electrode WFS knob setting Could remain energized Several secondsMAINTENANCEDD-3 DD-3Figure DD.3 Major Component Location DD-4Theory of Operation Section Section E-1Theory of Operation Return to SectionControl Board LF-72/74 Troubleshooting & Repair Section Section F-1Troubleshooting & Repair HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures Function Problems Function Problems Troubleshooting & Repair Drive Motor and Tach Feedback Test Test DescriptionTest Procedure Troubleshooting and Repair GAS Solenoid TestTest Procedure Figure F.3 Leads 552, 552BDiode Bridge Test 552B + 552A Wire Speed Potentiometer Test Wire Speed Potentiometer Test 14F-14PC Board Removal and Replacement Control PC Board Removal and Replacement Procedure Removal Procedure Replacement ProcedureTroubleshooting and Repair Wire Drive Motor and Gear BOX Removal and Replacement ProcedureProcedure Replacement Procedures SET UP Operation VerificationLF-72/74 Electrical Diagrams Section Section G-1Electrical Diagrams LF-72/74Timer 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
Top Page Image Contents