Mu kupanga nsalu zozungulira zamakono,dongosolo lochotsera nsaluchakhala gawo lofunika kwambiri lomwe limakhudza mwachindunji ubwino wa nsalu, kukhazikika kwa makina, komanso magwiridwe antchito onse opanga. Nthawi zambiri limatchedwadongosolo lochotsera nsalukapenamakina ozungulira nsalu, gawo ili limayang'anira kukoka nsalu yolukidwa nthawi zonse kuchoka pamalo olumikizira singano ndikupanga mipukutu yofanana ya nsalu. Pamene makina ozungulira olukira akusintha kukhala liwiro lokwera, ma gauge opyapyala, ndi mapangidwe ovuta kwambiri a nsalu, magwiridwe antchito a makina ochotsera nsalu akuchulukirachulukira m'makampani onse.
