F3/F3R OWNER’S MANUAL
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3. Follow the picture to remove the air
conditioning filter.
4. Pull the filter core out from the filter
box.
5. Check the surface of the filter core.
If it is dusty, replace it.
While installing the air conditioning filter,
keep the arrowhead up.
CAUTION
The air conditioning filter must be
installed in its correct position. Using
an air conditioning system without a
filter will weaken the dust-proof
function and the air conditioning
capability.