| 1.Confirm whether battery is fully charged? ☆Please make sure battery is fully charged. |
| 2.Confirm if the device is on its first battery discharge. ☆Please charge and discharge 2~3 complete cycles to restore battery capacity. |
| 3.Confirm whether the machine are clogged? ☆Clean filter(filter needs be fully dried before being installed again), replace it every six months.(If machine is used frequently, advise replace filter every three months) Clean dustbin, tube, power brush. |
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