Thermal Arc Fabricator 140 Service Manual page 5

SECTION 4:
OPERATION ........................................................................................... 4-1
4.01 General Safety Precautions ............................................................................ 4-1
4.02 Fabricator Controls ......................................................................................... 4-2
4.03 Gas Metal Arc Welding (GMAW) .................................................................... 4-4
4.04 Flux Cored Arc Welding (FCAW) ..................................................................... 4-4
4.05 Shutdown Procedures .................................................................................... 4-4
4.06 Basic Welding Technique ................................................................................ 4-5
4.07 Welding Gun Positions ................................................................................... 4-6
4.08 MIG Welding (GMAW) Variables .................................................................... 4-7
4.09 Establishing the Arc and Making Weld Beads ................................................. 4-8
4.10 Pre-Weld Procedure ....................................................................................... 4-8
4.11 Welding Procedure ......................................................................................... 4-8
4.12 Reference Tables ............................................................................................ 4-9
4.13 Fabricator 140 Welding Setting Selection Guide ........................................... 4-10
4.14 Fabricator 180 Welding Setting Selection Guide ........................................... 4-12
4.15 Gas Selection for Gas Metal Arc Welding ..................................................... 4-14
SECTION 5:
BASIC TROUBLESHOOTING ........................................................................ 5-1
5.01 Cleaning of the Unit ........................................................................................ 5-1
5.02 Cleaning of the Feed Rolls .............................................................................. 5-1
5.03 Basic Troubleshooting .................................................................................... 5-1
5.04 Solving Problems Beyond the Welding Terminals .......................................... 5-1
5.05 Welding Problems .......................................................................................... 5-3
5.06 Power Source Problems ................................................................................. 5-5
SECTION 6:
ADVANCED TROUBLESHOOTING .................................................................. 6-1
6.01 Pre Power-Up Checks ..................................................................................... 6-1
6.02 Initial Setup Conditions .................................................................................. 6-1
6.03 Primary Power Test ........................................................................................ 6-1
6.04 Logic & Control Test ....................................................................................... 6-1
6.05 Spool Gun Control Test .................................................................................. 6-2
6.06 Output Voltage Test ........................................................................................ 6-2
6.07 Wire Feed & Weld Test ................................................................................... 6-2
6.08 Primary Power Problems ............................................................................... 6-3
6.09 Logic & Control Problems .............................................................................. 6-4
6.10 Wire Feed and Weld Problems ....................................................................... 6-5
6.11 Rectifier Assembly Test Procedure ................................................................. 6-5
6.12 T1 Transformer Test Procedure ...................................................................... 6-6
6.13 C1 & C2 Test Procedure ................................................................................. 6-6
TABLE OF CONTENTS (continued) TABLE OF CONTENTS