1. Otu isi ọrụ, nchekwa na ntụkwasị obi, ọgụgụ isi dị elu, dabara maka Elevator nke mkpụrụ osisi mmanụ niile ma e wezụga mkpụrụ n'ike.
2. A na-ebuli mkpụrụ osisi mmanụ na-akpaghị aka, na-agba ọsọ ngwa ngwa.Mgbe igwe hopper mmanụ jupụtara, ọ ga-akwụsị na-ebuli ihe na-akpaghị aka, ma malite ozugbo mgbe mkpụrụ mmanụ ezughị ezu.
3. Mgbe ọ na-enweghị ihe ọ bụla a ga-ebuli n'oge usoro ịrịgo, a ga-enye ụda ụda buzzer na-akpaghị aka, na-egosi na mmanụ na-ejupụta.