Tekinologiya w’okukala mu vacuum freeze-yesigamye ku mbeera ya low-pressure high-vacuum okusobola okutegeera obutereevu sublimation ya ice crystals munda mu bigimusa awatali kusaanuuka mu mazzi ag’amazzi. Oluvannyuma lw’okukulukuta kw’empewo okutambula obutasalako mu byuma, empewo ey’ebweru eyingira buli kiseera mu kisenge ekikala. Okukuuma omuwendo gwa vacuum ogugendererwa, ppampu ya vacuum yeetaaga okusigala ng’ekola wansi w’omugugu omunene okumala ebbanga eddene, ekisika butereevu amaanyi agakozesebwa buli kibinja ky’ebintu.
Ekisinga obukulu, vacuum etamala ekendeeza ku sipiidi ya sublimation obviously. Ebintu ebiri munda mu ice tebisobola kuggyibwamu bulungi. Okusaanuuka kw’ekitundu kujja kubaawo mu kiseera ky’okufulumya, okusaanyaawo ensengekera y’ebitundu by’obutuli eby’olubereberye eby’ebintu ebikalu mu firiigi-. Ebintu ebiwedde birabika nga bikendedde, nga bigudde, bikaluba n’obubi obubi, nga bikosa nnyo endabika, obuwoomi n’omutindo gw’okuddamu amazzi. Mu mbeera ez’amaanyi, ekibinja kyonna eky’ebintu ebisookerwako kifiirwa omugaso gw’ebyobusuubuzi.
Mu bibalo, ensobi ezisinga obungi ez’okukulukuta kw’obuziba (vacuum leakage faults) zisibuka mu nkola y’okusiba. Ebitundu ebitali binywevu mulimu ebisiba silikoni w’oluggi lw’ekisenge ekikala, gaasikiti za payipu flange, empeta ezisiba vacuum valve n’ebitundu ebisiba ebikyukakyuka eby’enkola z’okukyusa. Ebintu bino ebya polimeeri ebya kapiira bikola nga bikyukakyuka wansi w’ebbugumu eri wansi n’ebbugumu erya bulijjo, nga biwerekerwako enkyukakyuka za puleesa buli luvannyuma lwa kiseera. Oluvannyuma lw’okukola okumala ebbanga eddene-, zijja kukaluba mpolampola, zifiirwa laasitiiki, zakutuka era zikyuse. Okugatta ku ekyo, ebisigadde by’ebintu ebinywezeddwa wakati w’ebintu ebisiba nabyo bijja kuleeta okunyigirizibwa okutali kujjuvu era bikola ebituli by’okukulukuta kw’empewo.
Ebitongole birina okuteekawo ebiragiro ebikwata ku kwekebejja n’okuddaabiriza buli kiseera. Nga buli kibinja ky’okufulumya tekinnatuuka, abaddukanya balina okuyonja n’obwegendereza kungulu kw’emiguwa egy’okusiba n’okuggyawo ebikuta, giriisi n’ebisasiro. Kebera oba omupiira gwa kapiira gulina enjatika, okukaluba n’okuyingira okw’olubeerera. Bw’omala okuzuulibwa ng’okulemererwa okukaddiwa, zzaawo ebikozesebwa mu budde mu kifo ky’okugenda mu maaso n’okufulumya n’ebizibu ebikwese.
Ekigezo ky’okukwata empewo (static vacuum holding test) y’engeri esinga okuba ennyangu ey’okusalawo okukulukuta. Oluvannyuma lw’ekisenge okuggalwa n’okupampagira okutuuka ku muwendo gwa vacuum ogwateekebwawo, salako yuniti ya vacuum era owandiike sipiidi y’okulinnya kw’obuziba mu kiseera ekigere. Singa okulinnya kwa puleesa kusukka ekipimo kya mutindo, kiraga nti okukulukuta okweyoleka nti waliwo. Oluvannyuma essira lisse ku kukebera fuleemu y’oluggi, ebifo ebiyungibwako flankisi n’ebifo vvaalu we ziri.
Waliwo ebintu bingi by’olina okussaako essira mu kukola buli lunaku. Tokozesa maanyi mangi ng’oggalawo oluggi lw’ekisenge okuziyiza okukyukakyuka okw’olubeerera okw’okufulumya okw’emiguwa egy’okusiba. Weewale okukozesa eby’okwoza eby’amaanyi ebikulukuta okusiimuula ebitundu ebisiba kapiira. Singa ebyuma byetaaga okuggalwa okumala ebbanga eddene, oluggi lw’ekisenge lubeere nga luggule katono, osobole okuziyiza olutimbe olusiba okunyigirizibwa okumala ebbanga eddene n’okufiirwa obugumu.
Okuddaabiriza enkola y’okusiba mu ngeri ey’omutindo okumala ebbanga eddene kikuuma ebyuma ebikala mu firiigi nga bikola mu mbeera ennungi ey’okukola, kutebenkeza enzirukanya y’okukala kwa buli kibinja ky’ebintu, kufuga enkozesa y’amasoboza ga yuniti mu kisuubirwa, era kukendeeza buli kiseera omuwendo gw’okugaana okufulumya ku makolero g’emmere ekaliddwa mu firiigi-.
