Ngakhale choyambirirawazonyamula wosanjikizawa magetsi chomera deaerator ntchito zigawo zisanu ndi zitatu za kulongedza, n'zovuta kukwaniritsa madzi abwino filimu boma chifukwa ena athyoledwa, tilted, ndi anasintha. Madzi opopera pambuyo popopera amatulutsa madzi pakhoma la deaerator. Ngakhale imagawiranso pa mbale yamadzi yopoperanso kudzera mu chulu chosonkhanitsira madzi, ndizovuta kukwaniritsa mapangidwe oyambira ogawa madziwo molingana ndi gawo lopopera papaketiyo chifukwa cha kapangidwe kake (mabowo opitilira 4,000 Φ8 amatsegulidwa pa chimbale chachikulu ndi awiri 1300mm). Chifukwa cha kusauka kwa filimu yamadzi, kupopera mbewu mankhwalawa pamtunda wosanjikiza sikuli kofanana, kotero kuti madzi opopera ndi nthunzi yachiwiri yachiwiri sangathe kuchita bwino kutentha ndi kusuntha misa, makamaka njira yosinthira misa.
Zigawo zisanu ndi zitatu zokha za kulongedza sizingakwaniritse zofunikira, chomwe ndi chimodzi mwa zifukwa zomwe deaerator ili ndi kuya kosauka kwa deoxygenation. Chifukwa chake, njira zofananirazi zidatengedwa:
a) Bwezerani gawo lolongedza lomwe lagwa, lalifupi, lopendekeka, kapena losweka;
b) Onjezani zigawo ziwiri zonyamula mu malo ochepa;
c) Dzazani pamwamba pa thireyi yamadzi ndi chitsulo chosapanga dzimbiri mawaya kuti muwonetsetse kufanana kwa madontho amadzi opopera pagawo lonyamula.