What issues should be paid attention to during the maintenance of air treatment units?

1. Regular inspection and cleaning
The housing and pipes of air treatment units: use a damp cloth or soft brush to clean dust, avoid using corrosive cleaning agents (such as bleach) to prevent damage to the surface coating or sensor.
Internal pipes and spray layers: remove dust and impurities to prevent blockage and affect the airflow. Avoid pollutant deposition due to reduced wind speed.
Sensor maintenance: clean the sensor area with a cotton swab or soft brush to ensure detection accuracy and avoid misjudgment of pollutant concentration.
Fan and water pump: check the bearing lubrication, replace the special oil after 1 month of use, and add grease every quarter thereafter.
Valves and joints: check the sealing (such as soapy water to detect air leakage) to prevent gas leakage from causing safety hazards.

2. Filter management and replacement
Primary filter: use a vacuum cleaner or damp cloth to clean large particles such as hair, sand and gravel 1-2 times a month.
Activated carbon filter: Expose to sunlight for 2-3 hours every 1-2 months to release adsorbed formaldehyde and other pollutants through high temperature, but it should be noted that the number of activated carbon regeneration is limited and needs to be replaced regularly.
HEPA filter: It cannot be washed with water. Use a vacuum cleaner to clean the surface dust every 3-6 months. Replace it when it turns black or the air volume decreases.

3. Safety operation and maintenance specifications
Be sure to cut off the power supply before maintenance to avoid the risk of electric shock. When handling flammable, explosive or toxic gases, wear protective equipment and check whether the explosion-proof device and gas leak alarm are normal. Complex repairs (such as compressor and circuit board repairs) should be performed by certified personnel to avoid malfunctions or accidents caused by improper operation.