Makinawa amayikidwa padenga loyimitsidwa, lomwe silikhala m'malo amkati ndipo silimakhudza zokongoletsa zamkati Ndikuwonetsa chinyezi chamkati chamkati, chinyezi chimatha kukhazikitsidwa mopanda malire kuchokera ku 30% -90%. Khazikitsani chinyezi chomwe chiyenera kuyendetsedwa. Chinyezi chokhazikitsidwa chikafika, chimangoyimitsa chikakhala chapamwamba kuposa chinyezi chokhazikitsidwa.
Makina owongolera chinyezi amatha kutsogozedwa padera ndikuyikidwa pamalo aliwonse. Ndikosavuta kwa ogwiritsa ntchito kuwongolera ndikuwona mu nthawi yeniyeni Ikhoza kusinthidwa malinga ndi zomwe makasitomala amafuna Zindikirani: Kuchuluka kwa mpweya wa makina, maonekedwe, pakamwa pa flange ndi kukula kwa thupi kungasinthidwe malinga ndi zofuna za makasitomala.