Banza, uzimye icyuma cyangiza hanyuma ucomeke amashanyarazi. Fungura umufuka wumukungugu wumukungugu wa vacuum, fata igikapu cyakoreshejwe, hanyuma ujugunye imyanda mumase cyangwa mumifuka hanyuma uyihambire hejuru ujugunye.
Ibikurikira, reba niba hari umukungugu ahasohoka. Niba ihari, igomba guhanagurwa no kuyungurura vacuum. Ibi nibisabwa kugirango ubuzima burambye bwogukora isuku.
Hanyuma, fungura paketi nshya ivumbi hanyuma uyishyiremo neza ukurikije amabwiriza. Menya ko gufungura umufuka wumukungugu bigomba kuba hafi yumufuka wumukungugu, hanyuma ukagerageza guhambira indobo kumasoko ya vacuum kugirango urebe ko nta mwuka uzava nyuma yo gusimburwa.