Oransi OVHT9908 Owner's Manual page 9

3. Remove the HEPA filter.
4. Use the brush attachment with your vacuum cleaner to clean the filter.
CAUTION: Do not use water or any household cleaner to clean the HEPA filer.
NOTE: The HEPA filter can be used continuously for up to two years. When the
HEPA filter turns from white to black, it should be replaced with a new one. If the
HEPA filter is still white, it does NOT need to be replaced.
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