ent instrumentstartstoo frequently,a fixedshort-termorintermittentworking systemfor themotorcontinuously.ent instrumentshould be limited tothe number of starts,the correct selection ofthermal protection, according to themotorfixedon thecalibrationused.ent instrumentreasons:selection ofpoweris not complete,a smallhorse-drawn carts.ent instrumentmotoroverloadlongrun, the motortemperature is too high;