Moyo wogwira ntchito kufinyalika kwambiri umadalira pamene firiji ikutulutsa. Kutayikira kwa firiji kumachitika chifukwa cha kuphatikiza kwa firiji ndi madzi, imabala zinthu zovulaza zomwe zimasenda mapaipi. The JZ-ZRF molecular sieve can keep low dew point in cool condition. Khalidwe lamphamvu kwambiri komanso lotsika kwambiri lidzateteza kukhazikika kwa mufiriji, yomwe ndi chisankho chabwino kwambiri cha kuyanika kwa firiji.
Side ya jz-zrf imagwiritsidwa ntchito ngati chophimba chamkati cha zosefera, makamaka zimagwiritsidwa ntchito mosalekeza kumwa madzi mu firiji kapena kuwongolera mpweya kuti muchepetse kuzizira ndi kututa. When the molecular sieve desiccant fails due to too much water absorption, it should be replaced in time.