EWM WEGA 451 - Page 5

Contents
Notes on the use of these operating instructions
Item No.: 099-004934-EWM01 5
5.2
MIG/MAG functional sequences / operating modes....................................................................45
5.2.1 Explanation of signs and functions...............................................................................45
5.2.2 Non-latched operation..................................................................................................46
5.2.3 Latched operation.........................................................................................................47
5.2.4 Spots ............................................................................................................................48
5.2.5 Interval..........................................................................................................................49
5.2.6 MIG/MAG automatic cut-out.........................................................................................49
6 Commissioning ....................................................................................................................................50
6.1 General ........................................................................................................................................50
6.2 Area of application – proper usage..............................................................................................50
6.3 Installation....................................................................................................................................51
6.4 Mains connection.........................................................................................................................51
6.5 Machine cooling...........................................................................................................................51
6.6 Coolant.........................................................................................................................................52
6.6.1 List of coolants..............................................................................................................52
6.6.2 Adding coolant..............................................................................................................52
6.7 Workpiece lead, general..............................................................................................................53
6.8 Welding torch and workpiece line connection .............................................................................53
6.8.1 Intermediate tube package connection ........................................................................56
6.8.1.1 Wire feed unit................................................................................................56
6.8.1.2 Welding machine...........................................................................................58
6.9 Shielding gas supply....................................................................................................................59
6.9.1 Connecting the shielding gas supply............................................................................59
6.9.2 Gas test or "rinse tube package"..................................................................................60
6.9.3 Setting the shielding gas quantity.................................................................................60
6.10 Inserting the wire electrode..........................................................................................................61
6.10.1 Fixing the wire spool retainer (pre-tension adjustment) ...............................................61
6.10.2 Spool brake setting.......................................................................................................62
6.10.3 Inserting the wire spool ................................................................................................63
6.10.4 Changing the wire feed rollers......................................................................................64
6.10.5 Inching the wire electrode ............................................................................................65
7 Maintenance and testing .....................................................................................................................66
7.1 General ........................................................................................................................................66
7.2 Cleaning.......................................................................................................................................66
7.3 Test..............................................................................................................................................67
7.3.1 Test equipment.............................................................................................................67
7.3.2 Scope of the test...........................................................................................................68
7.3.3 Visual inspection...........................................................................................................68
7.3.4 Measuring the open circuit voltage...............................................................................68
7.3.5 Measurement of insulation resistance..........................................................................68
7.3.6 Measuring the leakage current (protective conductor and contact current).................69
7.3.7 Measurement of protective conductor resistance ........................................................69
7.3.8 Functional test of the welding machine........................................................................69
7.3.9 Documentation of the test ............................................................................................69
7.4 Repair Work.................................................................................................................................70
7.5 Disposing of equipment ...............................................................................................................71
7.5.1 Manufacturer's declaration to the end user..................................................................71
7.6 Meeting the requirements of RoHS .............................................................................................71
8 Warranty................................................................................................................................................72
8.1 General Validity............................................................................................................................72
8.2 Warranty Declaration...................................................................................................................73