1. Kuzindikira kutuluka kwa evaporator nthawi zambiri kumachitika. Kutuluka kwa madzi ndi vuto lofala kwambiri la evaporators, ndipo muyenera kusamala kuti muzindikire kutuluka kwa madzi pafupipafupi mukamagwiritsa ntchito.

Pamene chotulutsira madzi cha ammonia chikutuluka, chimakhala ndi fungo loipa, ndipo palibe chisanu pamalo otayikira madzi. Pepala loyesera la Phenolphthalein lingagwiritsidwe ntchito poyesa kutuluka kwa madzi, chifukwa ammonia ndi yamchere, imasanduka yofiira ikakumana ndi pepala loyesera la phenolphthalein.Mukayang'ana, nthawi zambiri kumakhala malo otayikira madzi pomwe palibe chisanu mu evaporator. Muthanso kugwiritsa ntchito madzi a sopo kuti mupeze malo otayikira madzi.

2. Yang'anani momwe evaporator imakhalira ndi frosting. Ngati frost wosanjikiza ndi wokhuthala kwambiri, iyenera kusungunuka pakapita nthawi. Ngati frost si yachilendo, ikhoza kuyambitsidwa ndi kutsekeka, ndipo chifukwa chake chiyenera kupezeka ndikuchotsedwa pakapita nthawi.

3. Ngati evaporator yasiya kugwira ntchito kwa nthawi yayitali, ndibwino kuyika refrigerant mu accumulator kapena condenser ndikusunga mphamvu ya evaporator pa 0.05MPa (gauge pressure). Ngati ndi evaporator yomwe ili mu dziwe la mchere, iyenera kutsukidwa ndi madzi a pampopi. Mukatsuka, dzazani dziwe ndi madzi a pampopi.