V-TAC VT-5556 Mode D'emploi page 19

Maintenance - Dust Box
Do not allow water into the fan port during
cleaning the dust box
-It is recommended to clean the primary strainer with water
T
every 15 - 30 days after been used. The usage life of the
high efficiency filter screen is 3 months.
1. Before installing the filter screen, please ensure that the
high efficiency filter screen and the primary filter screen
are dry.
2. Do not expose the high efficiency strainer and primary
strainer into the sun.
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