I-1, xa ukhulula i-case ngokuhambelana noluhlu lokupakisha ukujonga izixhobo ezipheleleyo, khangela iinxalenye zomatshini ukuba kukho i-screw ekhululekile.
Umatshini wokutywina wokutywina weyunithi yomanyano kufuneka ujonge ukuba isigqubuthelo seglasi yendalo kunye nokuguquguquka okujikelezayo, igumbi eliphindwe kabini kufuneka lijonge isigqubuthelo sevacuum esiguquguqukayo jika ngasekunene okanye ngasekhohlo.
2, phambi kwebhuthi, iinxalenye kunye nomngxuma weoyile kumsebenzi, uhlawulisa inani elilinganiselweyo leoyile yokuthambisa yombhobho, kwangaxeshanye, ngokuhambelana nempompo yokucoca i-vacuum ukuzisa ioyile yempompo yokucoca, inaliti yamafutha kodwa ukujonga ifestile yeoyile yempompo yokufunxa.
Nika ingqalelo kumxholo weoyile ophantsi wempompo yokufunxa ixesha lokubaleka kufuneka lenze i-oyile yenqanaba le-oyile ayikho ngaphantsi kobude befestile ye-oyile ye-1/2, i-oyile ephezulu kufuneka ibenze i-oyile inqanaba le-oyile yefestile alikho ngaphezulu kwe-oyile. I-3/4 yobude befestile yeoli.
3, uhlengahlengiso lwesidanga sevacuum
ngokwemfuno yezinto ezipakishweyo zokukhetha iseti yexesha lokutsalwa ukufumana idigri yevacuum efanelekileyo, ixesha elide lokutsalwa lifunyanwa liqondo eliphezulu le-vacuum, kuxhomekeke kwiziphumo zangempela zokusebenza.
I-4, ubushushu bokuvalwa kobushushu kunye nohlengahlengiso lwexesha lokutywinwa kobushushu
ngokokwahluka kwezinto ezipakishiweyo kunye nezinto zokupakisha, seta ixesha elifanelekileyo lokutywinwa kobushushu kunye nefolokhwe yobushushu bokufumana amandla okutywinwa kwekhonkrithi kuxhomekeke kwijostle yokwenyani yeziphumo.
