Table Of Contents - Lincoln Electric LF-72 Operator's Manual

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Installation.............................................................................................................Section A
Technical Specifications ..............................................................................................A-1
Safety Precautions .......................................................................................................A-2
Location...................................................................................................................A-2
Mounting ..................................................................................................................A-2
Bench Mount............................................................................................................A-3
Swivel Mount ...........................................................................................................A-3
Boom Mount ............................................................................................................A-3
Suspended...............................................................................................................A-3
Weld Cable Sizes .....................................................................................................A-4
Coaxial Weld Cables................................................................................................A-5
Weld Cable Connections .........................................................................................A-5
Analog Control Cable Connections ..............................................................................A-6
Analog Miller Control Cable Adapter............................................................................A-7
Welding Gun/Wire Feeder Trigger Connector.........................................................A-8
High Frequency Protection .....................................................................................A-8
Remote Sense Lead Specifications ........................................................................A-8
Wire Drive Systems ......................................................................................................A-8
Welding Guns, Torches and Accessories ....................................................................A-9
Procedure for Changing Drive and Idle Roll Sets.......................................................A-10
Wire Drive Configuration..............................................................................A-10, A-11
Pressure Arm Adjustment .....................................................................................A-11
Wire Reel Loading .................................................................................................A-12
Weld Wire Routing.................................................................................................A-13
Shielding Gas Connections........................................................................................A-14
Installing Electrode Conduit Kits ................................................................................A-15
Aluminum Wire Preparations......................................................................................A-16
Base Model, Bench Model Standard Duty and Bench Model Heavy Duty................A-17
Typical System Configurations ..................................................................................A-18
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Operation ..............................................................................................................Section B
Safety Precautions .......................................................................................................B-1
Graphic Symbols ..........................................................................................................B-1
Common Welding Abbreviations..................................................................................B-2
Product Description .....................................................................................................B-2
Recommended Processes and Required Equipment ..................................................B-2
Front Panel Controls and Connections ........................................................................B-3
1. Remote Voltage Control Kit (Optional) ................................................................B-4
2. Burnback and Postflow Timer Kit (Optional) .......................................................B-4
3. Thermal LED, Motor Overload.............................................................................B-4
4. Cold Feed/Gas Purge Switch..............................................................................B-4
5. 2 Step - Trigger Interlock Switch.................................................................B-4, B-5
6. Wire Feed Speed Knob .......................................................................................B-5
7. Gun Receiver Bushing.........................................................................................B-5
8. Trigger Connector 5-Pin Amphenol.....................................................................B-5
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Accessories ..........................................................................................................Section C
General Options and Accessories..................................................................C-1 Thru C4
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