2 – Master(tig) 2500, 2503, 3500, 3503 MLS™/ 0311 © COPYRIGHT KEMPPI OYCONTENTS1. PREFACE ........................................................................................................................ 31.1. Introduction ............................................................................................................................... 31.2. Product introduction .................................................................................................................. 31.3. Operation safety ....................................................................................................................... 32. INSTALLATION ............................................................................................................... 42.1. Removal from packaging .......................................................................................................... 42.2. Locating the machine................................................................................................................ 42.3. Serial number ........................................................................................................................... 42.4. Installation and main parts ........................................................................................................ 42.5. Installation of the panel ............................................................................................................. 52.6. Mains connection ...................................................................................................................... 52.7. Welding cable connections ....................................................................................................... 62.7.1. Choosing welding polarity in MMA welding .............................................................................. 62.7.2. Earthing .................................................................................................................................... 62.8. Cooling unit (Mastercool 10, Mastercool 12) ............................................................................ 62.9. Shield gas ................................................................................................................................. 72.9.1. Installation of gas bottle............................................................................................................ 73. OPERATION.................................................................................................................... 83.1. Welding processes.................................................................................................................... 83.1.1. MMA welding ............................................................................................................................ 83.1.2. TIG welding .............................................................................................................................. 83.1.3. Synergetic Pulsed TIG welding ................................................................................................ 83.1.4. Long Pulsed TIG welding ........................................................................................................ 83.2. Operation functions................................................................................................................... 83.2.1. Power source............................................................................................................................ 83.2.2. Function panels (MTL,MTX, MTZ, MTM, MEL, MEX) ............................................................. 83.2.2.1. Indicator lights .................................................................................................... 93.2.2.2. MMA welding panel MEL.................................................................................... 93.2.2.3. MMA welding panel MEX ................................................................................. 103.2.2.4. TIG welding panel MTL .................................................................................... 113.2.2.5. TIG welding panel MTX.................................................................................... 133.2.2.6. TIG welding panel MTZ ................................................................................... 143.2.2.7. TIG welding panel MTM ................................................................................... 153.2.3. Saving welding settings (MTM) .............................................................................................. 163.2.4. Adopting the saved settings.................................................................................................. 163.2.5. Remote control memory channels.......................................................................................... 163.2.6. SETUP functions .................................................................................................................... 163.2.7. Foot pedal control R11F ......................................................................................................... 173.3. Cooling unit operation (Mastercool 10, Mastercool 12) .......................................................... 173.4. Storage ................................................................................................................................... 174. MAINTENANCE ............................................................................................................ 184.1. Regular maintenance.............................................................................................................. 184.1.1. Every sixth months ................................................................................................................. 184.1.2. Service contract...................................................................................................................... 184.2. Troubleshooting ...................................................................................................................... 184.3. Disposal of the machine ......................................................................................................... 195. ORDERING NUMBERS ................................................................................................ 196. TECHNICAL DATA........................................................................................................ 21