Hitachi UX2 - Page 170

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Install the air filter cover.
* Turn the thumb screws until the cover is in contact with the unit.
Open the [Usage time management] screen (the second screen of the [Circulation control] menu), and set
0 in [Air filter].
[Usage time management] screen
4
5
Main body
Turn the thumb screws until the
cover is in contact with the unit.