I. Cleaning Frequency
1. Washable filter materials
Surface dust cleaning: 1-2 times per week
Soft brush / vacuum cleaner light suction, no water washing
Water washing for regeneration: 1 time every 3-6 months
When the pressure difference significantly increases but has not reached the final resistance, wash
Maximum cleaning: ≤ 3 times, more than that, replace directly
2. Non-washable disposable filter materials
Only do surface dust removal: 1 time per month
Strictly prohibit water washing, strictly prohibit soaking in water
II. Replacement Frequency (Most Critical)
Conventional cleanroom / ventilation system
Normal environment: Replace once every 6-12 months
High dust, high humidity, high traffic: Replace once every 3-6 months
High cleanliness requirements (electronics / pharmaceuticals): Replace once every 3-6 months
Not based on time, priority is given to pressure difference
Pressure difference ≥ 1.5-2 times the initial resistance → Replace immediately
Filter material turns black, damaged, or moldy → Replace immediately