3
TABLE OF CONTENTS
1.0 Safety Precautions ....................................................................................5
1.1 Safety - English ..................................................................................5
1.2 Safety - Spanish .................................................................................9
1.3 Safety - French .................................................................................13
2.0 Description ..........................................................................................17
2.1 General ........................................................................................19
2.2 Receiving - Handling............................................................................19
2.3 Safety ..........................................................................................19
2.4 Power Source...................................................................................19
2.5 Wire Feeder ....................................................................................19
2.6 Controls....................................................................................... 20
2.7 Built-in Toolbox................................................................................ 20
2.8 Gun Master 250 Mig Gun....................................................................... 20
2.9 Running Gear.................................................................................. 20
3.0 Installation.......................................................................................... 23
3.1 Location....................................................................................... 23
3.2 Handle Assembly Installation....................................................................24
3.3 Electrical Input Connections ................................................................... 25
3.4 Voltage Changeover ........................................................................... 26
3.5 Secondary Output Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.6 “Euro” Torch Connections ...................................................................... 28
3.7 Wire Feeder Mechanism ....................................................................... 29
3.8 Connection of Shielding Gas Supply.............................................................32
4.0 Operation ...........................................................................................35
4.1 Standard Controls ..............................................................................35
4.2 Optional Controls.............................................................................. 38
4.3 Mig Welding Set-up.............................................................................41
4.4 Tig Welding Set-up .............................................................................42
4.5 Handling the Tig Torch.........................................................................44
4.6 Stick Welding Set-up........................................................................... 45
5.0 Maintenance.........................................................................................47
5.1 Maintenance and Service .......................................................................47
5.2 Inspection and Service..........................................................................47
6.0 Replacement Parts .................................................................................. 49
6.1 General ....................................................................................... 49
6.2 Ordering ...................................................................................... 49
Section / Title Page