Lincoln Electric IM847-D Routine Maintenance, Periodic Maintenance, Calibration Specification

Page 36

D-1

MAINTENANCE

D-1

 

 

 

MAINTENANCE

Safety Precautions

WARNING

ELECTRIC SHOCK can kill.

•Do not touch electrically live parts such as output terminals or inter- nal wiring.

•When inching with gun trigger, electrode and drive mechanism are “hot” to work and ground and could remain energized several seconds after the gun trigger is released.

•Turn OFF input power at welding power source before installation or changing drive roll and/or guide tubes.

•Welding power source must be connected to system ground per the National Electrical Code or any applicable local codes.

•Only qualified personnel should perform mainte- nance work.

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

Observe all additional Safety Guidelines detailed throughout this manual.

ROUTINE MAINTENANCE

•Clean and tighten all weld terminals.

•Inspect all weld cables, control cables, gun cables and shielding gas hoses. Repair or replace as nec- essary.

PERIODIC MAINTENANCE

•Clean drive roll grooves.

•Blow out or vacuum the inside of the feeder.

CALIBRATION SPECIFICATION

WARNING

ELECTRIC SHOCK can kill.

•Do not touch electrically live parts.

•When inching with the gun trigger, electrode, wire drive motor and drive mechanism are "hot" to work and ground and could remain energized several seconds after the gun trigger is released.

•Welding power source must be connected to system ground per the National Electrical Code or any applicable local codes.

•Only qualified personnel should perform mainte- nance work.

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

Calibration of the LF-72 may be required when the p.c. board, potentiometer or motor is replaced or serviced. Calibration matches the scale on the name plate to the actual wire feed speed.

To verify if calibration is necessary:

1.Turn off power to the LF-72.

2.Assemble .045 drive rolls, inner guide and the outer guide into the drive. Remove the gun from the wire feeder if assembled.

3.Load .045 wire into the drive. Cut the wire flush with the end of the gun bushing.

4.Set the WFS knob to 300 ipm.

5.Using the COLD FEED switch, feed wire for 10 seconds.

6.Cut the wire flush with the end of the gun bushing. Measure the length of the wire. If the wire mea- sures 50 ± 2.5 inches then calibration is not required.

Tools required applies to all codes that follow: 5/16" nut driver

3/4" open end wrench WFS meter or RPM meter

Shorting plug. The shorting plug shorts pins 1

&5 of connector J2 on the p.c. board. J2 is a

6 pin molex connector.

To calibrate the LF-72 for Codes 11075 thru 11293:

1.Turn off power to the LF-72.

2.Disconnect the electrode lead from the feed plate and from the welding power source.

3.Remove the 5 screws securing the wraparound. (The door is not shown for clarity. “See Figure D.1”)

4.Open the idle arm.

5.Turn power on to the LF-72.

LF-72

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Contents LF-72 Wire Feeder Safety California Proposition 65 WarningsElectric Shock can kill Welding and Cutting Sparks can Cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcTable of Contents Thank YouSection a Section BSection C Section D Section ESection F P-622Installation Amp Rating Duty CycleSafety Precaution LocationMounting Bench Mount Swivel MountBoom Mount SuspendedElectric Shock can Kill Weld Cable SizesCoaxial Weld Cables Weld Cable Connection6INSTALLATIONA-6 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 Figure A.3Procedure for Changing Drive and Idle Roll Sets Wire Drive ConfigurationPressure ARM Adjustment Gun Receiver For use With BushingSet the pressure arm as follows See Figure A.6 Wire Reel Loading Spindle PlacementLoading 16 to 44 lb .3 20kg Spools See figure A.8 Loading 30 lb .6 kg Readi-Reels See Figure A.9Weld Wire Routing Figure A.9Shielding GAS Connection Installing Electrode Conduit Kits Figure A.10a For Codes 11209, 11210, 11211 and aboveAluminum Wire Preparations Figure A.12a For Codes 11209, 11210, 11211 and aboveBase Model Bench Model Standard Duty Bench Model Heavy Duty Typical System Configurations 15, Magnum15’, Magnum Pro Safety Precautions OperationCommon Welding Abbreviations Product DescriptionRecommended Processes Required EquipmentFront Panel Controls and Connections Figure B.1 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 Optional Kits Optional Kits Accessories Key Maintenance MaintenanceRoutine Maintenance Periodic MaintenanceSee Figure D.2 For Codes below 11289 use 9 thruFor Codes above 11290 use Troubleshooting HOW to USE Troubleshooting GuideOutput Problems Installed Wiring Diagram LF-72 Feeder 11075, 11076LF-72 Feeder for Codes 11209, 11210, 11211 L12146-1Diagrams Diagrams Dimension Prints Bench Model Bench Model Standard DutyBench Model Heavy Duty Precaucion Warnung
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