** Isingeniso:** Emhlabeni wemishini yokukhiqiza nokucubungula, ukusetshenziswa kobuchwepheshe obuthuthukile nemishini kubalulekile ekuqinisekiseni ukusebenza kahle, ukunemba, kanye nekhwalithi ekukhiqizeni. Esinye semishini ebalulekile esidlala indima ebalulekile emkhakheni wemishini yangemva kokucubungula umshini wokumboza we-vacuum .. Kulesi sihloko, sizohlola ukubaluleka kwemishini yokumboza i-vacuum ke