Chimodzi mwa zolakwika zofala kwambiri za chomera chosakaniza phula ndi kulephera kwa chipangizo chozizira chodyera. Nthawi zambiri, kulephera kwa chipangizo ozizira kudyetsa chuma amatanthauza vuto la variable liwiro lamba kuyimitsa. Chifukwa chachikulu cha chodabwitsa ichi ndi chakuti pali zipangizo zochepa kwambiri mu hopper yazinthu zozizira, zomwe zimapangitsa kuti chojambuliracho chikhudze kwambiri lamba podyetsa, kotero kuti chipangizo chozizira chodyera chidzasiya kugwira ntchito chifukwa chodzaza.

Njira yothetsera vutoli ndikuonetsetsa kuti kuchuluka kwa zinthu zomwe zili mu kukumbukira mu chipangizo chodyera ndizokwanira.
Kulephera kwa chosakaniza konkire cha phula losakaniza chomera ndi chimodzi mwazovuta zomwe zimafala. Nthawi zambiri, zimachitika chifukwa cha phokoso lachilendo la makina obwera chifukwa chochulukirachulukira. Njira yothetsera vutoli ndikufufuza nthawi zonse kuti mutsimikizire ngati pali vuto. Ngati pali, m'pofunika m'malo atakhazikika ananyamula.
Ndizofalanso kuti chinsalucho chikhale ndi mavuto panthawi ya ntchito ya phula losakaniza chomera. Kwa chinsalu, panthawi ya opareshoni, chifukwa cha kuchuluka kwakukulu kwa mafuta osakaniza mu osakaniza, msewu pamwamba pambuyo pokonza ndi kugudubuza adzaoneka keke mafuta. Chifukwa chachikulu cha vutoli ndikuti mabowo a chinsalu ndi aakulu, kotero panthawi ino, choyamba muyenera kuyang'ana ngati chipangizo chowonetserako ndi chololera.