Ndikoyenera kugwira ntchito zosiyanasiyana zouma zouma granular.Makamaka, mukathiridwa ndi makina otsuka ma air screen ndi indented cylinder, mbewuzo zimakhala ndi makulidwe ofanana.
Mndandanda wa silinda wokhazikika wa silinda, usanaperekedwe, uyesedwa kangapo, kuwonetsetsa kuti chilichonse chili ndi khalidwe labwino komanso moyo wautali wautumiki.
Wopakira mbewu amabwera ndi kuyeza kwakukulu, kuthamanga kwapang'onopang'ono, magwiridwe antchito odalirika komanso okhazikika. Zoyezera zodziwikiratu, zowerengera zokha, komanso zolemetsa zodziwonjezera zilipo pazida izi.
Makina abwino kwambiri owunikira mbewu ndi chida chopangira mbewu chokomera chilengedwe, chomwe chimagwira ntchito bwino kwambiri pakuwongolera fumbi, kuwongolera phokoso, kupulumutsa mphamvu, komanso kubwezeretsanso mpweya.