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LF-72/74 SINGLE/DUAL
Section B-1 Section B-1
TABLE OF CONTENTS
- OPERATION SECTION -
Operation ................................................................................................................Section B
Safety Precautions .......................................................................................................B-2
Graphic Symbols..........................................................................................................B-2
Common Welding Abbreviations..................................................................................B-3
Product Description......................................................................................................B-3
Recommended Processes and Required Equipment..................................................B-3
Front Panel Controls and Connections........................................................................B-4
1. Remote Voltage Control Kit (Optional)................................................................B-5
2. Burnback and Postflow Timer Kit (Optional) ......................................................B-5
3. Thermal LED, Motor Overload............................................................................B-5
4. Cold Feed/Gas Purge Switch .............................................................................B-5
5. 2 Step - Trigger Interlock Switch.................................................................B-5/B-6
6. Wire Feed Speed Knob ......................................................................................B-6
7. Gun Receiver Bushing ........................................................................................B-6
8. Trigger Connector 5-Pin Amphenol ....................................................................B-6