Separate the front and rear covers from the product.
Using a vacuum cleaner or soft brush, remove any dust from the pre-filter surrounding the filter.
Do not clean the filter with water. The service life of the filter may be reduced.
Be careful not to damage the pre-filter when using a vacuum cleaner.
Take caution because there is a risk of tearing or loss when separating or assembling the pre-filter.
Be careful as the filter may be damaged if it is covered with liquid.