Lincoln Electric IM847-D Wire Feed Speed Knob, GUN Receiver Bushing K1500-2, Trigger Interlock

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B-5		OPERATION	B-5

Trigger Interlock

Trigger Interlock operation provides for operator com- fort when making long welds. When the gun trigger is first pulled, the welding power source energizes the output and the wire feeder feeds wire for welding. The gun trigger is then released while the weld is made. To stop welding, the gun trigger is pulled again, and when it is released the welding power source output turns off and the wire feeder stops feeding wire.

CAUTION

• If the arc goes out while welding with trigger interlock operation, the elec- trode output from the welding power source remains energized and the wire feeder will continue to feed wire until the gun trigger is again pulled

and then released.

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6. WIRE FEED SPEED KNOB

The large, calibrated wire feed speed knob makes for easy and accurate adjustment of the wire feed speed. The knob rotates 3/4 turn. Turn the knob clockwise to increase the wire feed speed, and counter clockwise to reduce the wire feed speed.

The wire feed speed range is 50 to 800 in/min (1.27 -

20.3m/min).

7.GUN RECEIVER BUSHING (K1500-2)

(K1500-2 bushing is standard on all LF-72's)

This Gun Receiver Bushing is used with Lincoln gun connectors, also with Magnum 200/300/400 guns and compatible with Tweco® #4).

8. TRIGGER CONNECTOR 5-PIN AMPHENOL

This is used for connecting the MIG gun trigger.

See Installation Section for detail.

LF-72

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Contents LF-72 Wire Feeder California Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding and Cutting Sparks can Cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéThank You Table of ContentsSection B Section aSection C P-622 Section DSection E Section FAmp Rating Duty Cycle InstallationLocation Safety PrecautionMounting Suspended Bench MountSwivel Mount Boom MountWeld Cable Sizes Electric Shock can KillWeld Cable Connection Coaxial Weld CablesAnalog Control Cable 6INSTALLATIONA-6Control Cable Connections Analog Miller Control Cable Adapter K2335-1 Miller Power Source Lincoln Wire FeederPin Function High Frequency Protection Wire Drive SystemsWelding GUN/WIRE Feeder Trigger Connector Remote Sense Lead SpecificationsFigure A.3 Welding GUNS, Torches and ACCES- SoriesWire Drive Configuration Procedure for Changing Drive and Idle Roll SetsGun Receiver For use With Bushing Pressure ARM AdjustmentSet the pressure arm as follows See Figure A.6 Loading 30 lb .6 kg Readi-Reels See Figure A.9 Wire Reel LoadingSpindle Placement Loading 16 to 44 lb .3 20kg Spools See figure A.8Figure A.9 Weld Wire RoutingShielding GAS Connection Figure A.10a For Codes 11209, 11210, 11211 and above Installing Electrode Conduit KitsFigure A.12a For Codes 11209, 11210, 11211 and above Aluminum Wire PreparationsBase Model Bench Model Standard Duty Bench Model Heavy Duty 15, Magnum Typical System Configurations15’, Magnum Pro Operation Safety PrecautionsRequired Equipment Common Welding AbbreviationsProduct Description Recommended ProcessesFigure B.1 Description Front Panel Controls and ConnectionsRemote Voltage Control KIT Burnback and Postflow Timer KITCold FEED/GAS Purge Switch Step Trigger Interlock SwitchTrigger Interlock Wire Feed Speed KnobTrigger Connector 5-PIN Amphenol GUN Receiver Bushing K1500-2Optional Kits AccessoriesOptional Kits Accessories Key Periodic Maintenance MaintenanceMaintenance Routine MaintenanceFor Codes below 11289 use 9 thru See Figure D.2For Codes above 11290 use HOW to USE Troubleshooting Guide TroubleshootingOutput Problems Installed LF-72 Feeder 11075, 11076 Wiring DiagramL12146-1 LF-72 Feeder for Codes 11209, 11210, 11211Diagrams Diagrams Bench Model Bench Model Standard Duty Dimension PrintsBench Model Heavy Duty Precaucion Warnung