Coway AP-2021A Gray User Manual page 26

HOW TO REPLACE FILTER
How to replace filter (Replace in the given filter replacement cycle)
1. Remove the back cover from the product and open the filter tray.
Remove the 4D pre-filter and double HEPA filter(4D) from the tray.
2. Replace each filter in the given filter replacement cycle.
- How to replace smoke and
allergen filter
1. Remove smoke and allergen filter
from the separated double HEPA
filter(4D).
2. Remove the packaging vinyl from the new smoke and allergen filter and insert it into the
double HEPA filter(4D).
- How to replace the deodorization filter
1. Remove 2 deodorization filters from the separated double HEPA
filter(4D).
2. Remove the packaging vinyl from the new deodorization filter and insert it into the double
HEPA filter(4D).
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