Vacuum pre-kutonhora kwemichero uye miriwo inokurumidza kubvisa imwe kupisa kwemunda yakaunza, kuderedza nguva yekuchengeta michero nemiriwo, chengetedza miriwo uye miriwo, uye kuvandudza kunaka kwekuchengeta kwechitsva.
Vacuum pre-inotonhorera ndiyo inokurumidza uye yakanyanya kubereka inotonhorera system yemiriwo, maruva, uye anogadzirisa zvikuru kunaka kwezvigadzirwa, uye zvino miriwo uye miriwo miriwo uye michero yemichero sarudza vacuum coolers.