Hunhu hwekupinda nekubuda kwevacuum booster. Pane poindi yekuchinja pakove yega yega inoenderana nemadhigirii akasiyana evacuum mumufananidzo, inonzi poindi yekubatsira simba guru, ndiko kuti, poindi apo musiyano wekumanikidzwa unoshanda pa servo diaphragm unosvika pakakwirira sezvo simba rekupinda richiwedzera. Kubva panguva ino zvichienda mberi, kuwedzera kwesimba rekupinda kwakaenzana nekuwedzera kwesimba rekupinda.
Zvichienderana neQC/T307-1999 "Mamiriro eUnyanzvi eKusimudzira Vacuum", chiyero chevacuum chenzvimbo yekubvisa vacuum panguva yekuyedza i66.7±1.3kPa (500±10mmHg). Hunhu hwekupinda nekubuda kwevacuum booster hunotarwa nenzira yekuverenga. Zvichienderana nepfungwa yekushanda kwevacuum booster, maparamita maviri ehunhu pacurve yehunhu anogona kufungidzirwa: simba rekupinda rinoenderana nepoindi yesimba guru uye huwandu; Chiyero chesimba rekupinda kune simba rekupinda pamberi pepoindi yesimba guru, kureva chiyero chesimba.
