15. The Tubble ® Air Purifier works optimal only with the specially designed high
performance Tubble ® filters. They need to be replaced at least once a year or
sooner if the device signals it. The filters can be ordered on www.tubble.com.
16. Do not use the filter for any unintended purposes to avoid irreversible harm.
17. Do not use hard objects to strike the device, especially the air outlet and the air
net.
18. Do not insert your fingers or any other objects into the air outlet/inlet to prevent
physical harm or damage.
19. Do not use the device in combination with an indoor spray accessory or in a
place with a high concentration of flammable gas or chemical fumes.
20. Ensure the product is unplugged before moving, cleaning, maintaining or
replacing the filter.
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