1. Dapre pwosedi netwayaj anviwònman an, materyèl filtre nan filtè a koryas retire epi netwaye regilyèman, entèval la se jeneralman 3 a 6 mwa.
2. Lè vòltaj inite fanatik la ogmante, vitès van an nan zòn k ap travay la toujou pa rive nan 0.3m/s, se sa ki, lè segondè -filtè efikasite yo dwe ranplase.
3. Lè w ranplase filtè ki gen gwo -efikasite, ou ka louvri kouvèti dèyè ka a. Lè w ranplase, peye atansyon sou mak flèch la sou filtè a. Pwen flèch la se direksyon koule lè laminar.
4. When replacing the high-efficiency filter, use a dust particle counter to check whether the surrounding seals are good. Adjust the voltage of the fan unit to keep the average wind speed in the working area within the range of 0.4±10 percent m/s, and check the purification efficiency with a dust particle counter.