Nakuba yokuqalaukupakisha ungqimbaI-deaerator yesikhungo samandla isebenzisa izendlalelo eziyisishiyagalombili zokupakisha, kunzima ukufeza isimo sefilimu samanzi esifanelekile ngoba ezinye zazo ziphukile, zatshekiswa, futhi zagudluzwa. Amanzi afuthwe ngemva kokuchithwa kwesifutho enza ukugeleza kwamanzi odongeni lwe-deaerator. Nakuba iphinde isakazwe epuleti lesifutho samanzi futhi ngekhoni yokuqoqa amanzi, kunzima ukufeza idizayini yokuqala yokusabalalisa ngokulinganayo amanzi kusendlalelo sokufafaza esipakini ngenxa yesakhiwo sawo (izimbobo ezingaphezu kuka-4,000 Φ8 zivulwa ku- i-disc enkulu enobubanzi obuyi-1300mm). Ngenxa yesimo esibi sefilimu yamanzi, ukufafaza kungqimba lokupakisha akulingani, ngakho-ke amanzi afafaziwe kanye ne-steam yesibili ephezulu ayikwazi ukufeza ngokugcwele inqubo yokushisa nokudlulisa ubuningi, ikakhulukazi inqubo yokudlulisa ubuningi.
Izingqimba eziyisishiyagalombili kuphela zokupakisha azikwazi ukuhlangabezana nezidingo, okungesinye sezizathu zokuthi kungani i-deaerator inokujula okungekuhle kwe-deoxygenation. Ngakho-ke, izinyathelo ezilandelayo ezihambisanayo zathathwa:
a) Buyisela ungqimba lokupakisha oluwile, olufushane, olutshekile, noma oluphukile;
b) Engeza izingqimba ezimbili ezengeziwe zokupakisha endaweni elinganiselwe;
c) Gcwalisa ingaphezulu lethreyi lamanzi ngensimbi engenasici ukuze uqinisekise ukufana kwamaconsi amanzi afuthwe kungqimba lokupakisha.