Kemppi FastMig X 450 Operating Manual

Also see for FastMig X 450: Quick guide Quick guide Service manual

EN6. OPERATION DISTURBANCESShould you experience a malfunction from your machine, please consult the basictroubleshooting text above first, and complete some basic checks.If the machine malfunction cannot be corrected with these measures, contact your Kemppimaintenance service workshop.Operation of the overload protectionYellow thermal protection lamp is lit when the thermostat is operating due to loading beyondthe stated duty cycle.The thermostat will operate, if machine is continuously loaded over rated values or cooling aircirculation is blocked.Internal fans will cool the machine, and when the pilot lamp is not lit the machine isautomatically ready for welding.Control fusesFuse, 6.3 A delayed, on the rear wall of machine provides protection for auxiliary devices.Use the same type and rating of fuse as marked beside the fuse adapter. Damage caused byincorrect fuse selection is not covered by the guarantee.Under and over voltages in the mains supplyPrimary circuits of the machine are protected against sudden, transient overvoltages. Themachine is designed to withstand 3 x 440 V voltage continuously. Ensure that voltage is keptwithin this permissible limit, especially when the mains supply is provided by a combustionengine generator. If the mains has under voltage (under approx. 300 V) or overvoltage (overapprox. 480 V) machine control stops operation automatically.Loss of a phase in the mains supplyLoss of a mains power phase causes noticeably poor welding properties. In some cases themachine won't start at all. Loss of a phase can be due to following:• Blowing of mains supply fuse• Defective mains cable• Bad connection of mains power cable on machine terminal block or plug of machine.7. MAINTENANCEWhen considering and planning routine maintenance, please consider the frequency ofmachine use and the working environment.Correct operation of the machine and regular maintenance will help you avoid unnecessarydowntime and equipment failure.NOTE! Disconnect the machine from the mains before handling the electrical cables.7.1 Daily maintenance• Check the overall condition of the welding gun. Remove welding spatter from thecontact tip and clean the gas nozzle. Replace worn or damaged parts. Only use originalKemppi spare parts.• Check the condition and connection of the welding circuit components: welding gun,earth return cable and clamp, sockets and connectors.• Check the condition of the feed rolls, needle bearings and shafts. Clean and lubricatebearings and shafts with a small quantity of light machine oil if necessary. Assemble,adjust and test function.• Check that the feed rolls are suitable for the filler wire you are using, and that theirpressure adjustment is correct.23© Kemppi Oy / 1312