1. Raws li cov txheej txheem kev tu ib puag ncig, cov khoom siv lim hauv cov lim dej ntxhib raug tshem tawm thiab ntxuav tsis tu ncua, feem ntau yog 3 mus rau 6 lub hlis.
2. Thaum qhov hluav taws xob ntawm lub kiv cua nce, cua ceev hauv qhov chaw ua haujlwm tseem tsis ncav cuag 0.3m/s, uas yog, huab cua siab - lim dej yuav tsum tau hloov.
3. Thaum hloov lub siab - lim dej, koj tuaj yeem qhib lub nraub qaum ntawm rooj plaub. Thaum hloov, xyuam xim rau lub xub cim ntawm lub lim. Lub xub taw tes yog cov kev taw qhia ntawm laminar cua ntws.
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.