I. Daily Correct Operating Procedures
1. Start the machine for self-cleaning for 10-15 minutes before conducting experiments.
2. Conduct ultraviolet sterilization for 30 minutes before operation.
3. Do not place items at the air outlet or block the airflow.
4. Do not directly pour liquids onto the work surface.
5. Regularly clean the glass and interior to maintain dust-free conditions.
II. Filter Replacement Cycle (Industry Standard)

Primary Filter: 3 months. It blocks large particles and hair dust and can be used for dust cleaning. Replace it when it expires.
High Efficiency Filter: 12-18 months. The core filtering component, not washable. When the pressure difference increases or the wind speed decreases, it must be replaced.
III. Common Faults and Solutions

1. Wind speed decreases, purification is weak
Reason: Blockage of primary / high efficiency. Solution: Clean the primary filter, check the pressure difference, and replace the high efficiency filter.
2. Cleanliness does not meet standards, experiments are contaminated
Reason: Airflow turbulence, leakage of high efficiency, aging of sealing ring. Solution: Check the seal, re-inspect for leaks, and replace the filter.
3. Fan makes abnormal noise, vibration is large
Reason: Dust accumulation on the fan, aging of bearings, loose installation. Solution: Clean the air duct, tighten the fan, and replace the fan.
4. Ultraviolet lamp does not light up
Lamp aging, loose wiring. Replace the ultraviolet lamp regularly.
IV. Tips for Extending Equipment Lifespan

1. Add a wind shower at the laboratory entrance to reduce dust brought in.
2. Regularly start and run the equipment when not in use.
3. Do not use in high-temperature or corrosive environments.
4. Clean and disinfect promptly after each experiment.