Ⅰ.Motor overheating and abnormal noise

Reasons:

1. Not good lubrication to the bearing or terrible fray

2. Fan blade drop or fray

3.Poor contact to the switching circuit or short circuit to single phase

4. Too low voltage

Ⅱ.Abnormal noise at work , even worse, the drum cant rotate and vibrate at bottom. The reason: Usually it is jammed at the bottom or the bearing is broken .Even worse, the magnets inside drop down to cause chamber to screak and scarification on the drum

Ⅲ Gearbox overheating

Reasons:

1. Shortage of oil or bad oil quality.

2. Too much fray at the gear and worm or poor interdigitation.

3. Poor lubrication to the bearing or terrible fray