dental weldermotoroverloadlongrun, the motortemperature is too high; dental welderstartstoo frequently,a fixedshort-termorintermittentworking systemfor themotorcontinuously.dental weldershould limitthe number of starts,the correct selection ofthermal protection, according to themotorfixedon thecalibrationused.dental welderreasons:selection ofpoweris not complete,a smallhorse-drawn carts.