Cleaning the filter compartment Cleaning the laser particle sensor To ensure optimal ventilation and purification, use a vacuum cleaner to remove any dust from the air inlets and the filter compartment, or wipe these areas gently with a soft cloth. Use a non-sharp tool to open the cover of the laser particle sensor, then use an air blow gun or hair dryer to clean the filter on the cover and the sensor, as illustrated in the figure. Note: Do not use hot air. Note: To avoid damaging the purifier, do not rinse or spray the filter compartment directly with water, or wipe it with a soaking wet cloth. 9