| 2.Whether brush roller have been worn? ☆Please replace brush roller. |
| 2.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. |
| 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.Confirm whether floor is even and sealed hard floor? ☆Please use the unit on the sealed and even hard floor. |
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