Kemppi MasterTig AC/DC 2000 Service Manual

Also see for MASTERTIG AC/DC 2000: Operation instructions

TroubleshootingThe machine may be repaired only by a workshop/technician licensed and authorized for thejob!First do a visual check to find possible damage points, for example loose connectors broken wiresor signs of overheating.Troubleshooting diagramPROBLEM POSSIBLE CAUSE REMEDYThe power source doesn´t start.Panel lights and displays remain blank.Net fuse / fuses have burnt.A damaged supply cable.A faulty main switch S001.A faulty auxiliary transformer T002 or abad connection in auxiliary transformerconnectors.A faulty control card A002.Check net fuses.Check the supply phases from connectorX001. Fix/replace the supply cable asneeded.Check the main switch condition..Check the auxiliary transformer T002and the connectors. Fix bad connectionsor replace T002 if necessary.Check the control card A002 fuses.Replace the A002 if necessary.After startup the fans remain rotating.Panel not operating.Not all functions of the panel workingcorrectly.Bad contact in the flat cable betweenfunction panel and control card A002.Faulty panel.Check flat cables and connectors X1 andX2.NOTE! RESET THE PANEL, BYPRESSING DOWN CONTACT-TIGAND HF-TIG BUTTONS, WHILESTARTING UP THE POWERSOURCE BY MAIN SWITCH..IF SOME PANEL FUNCTION IS NOTWORKING AFTER RESETTING THEPANEL, REPLACE THE PANELMEMBRANE OR THE PANEL.The power source won´t start up.Wrong supply voltage, over or undervoltage signal lamp is on.Uin Err error message is shown on thedisplay.Wrong supply voltage has beenselected(ACDC 2500). A phase ismissing.Disconnect the power source plug fromthe net, and select the correct supplyvoltage by selector switch S003 (ACDC2500 and 2500W). Check the presenceof all supply phases.Err 1 error message is shown on thedisplay.Power sources output voltage has risenover 90 V for more than 4 seconds.Check the condition of the control cardA003.The net fuse gets burnt during startup. A faulty supply cable.A faulty primary circuit component.A faulty secondary circuit component.Check and replace the supply cable asnecessary.Check the primary side components(main switch, primary rectifier, primaryIGBT etc.).Check the diode cards, secondary IGBTand control card A003).36