| 1.Dry filter is installed correctly? ☆Please make sure that the dry filter is installed properly |
| 2.Whether brush roller have passed replacement cycle？(3~6 months) ☆Please replace brush roller. |
| 3.Confirm whether there is dirt or debris in the channel or on the brush roller. ☆Please clean the brush roller and channel according to picture instructions. |
| 4.Examine the scraper and see if there is dirt or debris on the scraper. Check if the scraper is deformed. ☆Clean debris & dirt in the scraper with cleaning tool. |
| 5.Confirm whether floor is even and sealed hard floor? ☆Please use the unit on the sealed and even hard floor. |
