HTW HTWPUR14DUSTCUBE Manual De Usuario página 23

Filter replacement instructions
When the filter is used for more than 1600 hours, it will flash
to remind you to replace the filter. In order to protect the
product from impact during transportation, the filter is
installed at the bottom, which may require a little more effort
than usual.
1.Hold the knob cover from the bottom of the product, rotate
clockwise in the direction(as shown below), open the bottom
cover, remove the filter, and remove the plastic bag of the
filter.
2.After the filter plastic bag is removed, put the filter back into
the product, and align the triangle of the bottom cover with the
triangle on the machine counterclockwise and turn it in the
direction of the arrow, as shown below:
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