1. Adjust the tightness of belt, rotate the wind wheel with hand, observe whether the rotation is smooth.
2, check and replace the joint between the gasket and sealing filler.
3, clean the motor wind wheel, filter and inside the casing. In order to prevent corrosion of the paint shedding part should be timely repair brush.
4. In order to guarantee the flexibility and stability of the coupling and bearing, the lubricating oil should be filled with the turning part.