The normal occlusion area of the gear is about 2/3, and is larger than the occlusion area. The occlusion force between the gears is too large, so that the gear cannot rotate, and then the impeller does not move.
2. Rusty stuck
Roots blowers have been idle for a long time and will rust inside and out. Large areas of rust fall off and the impeller may get stuck. In this case, you need to clean the rust with kerosene soak, gasoline flush, etc., and adjust the gap.
3. Foreign body is stuck
Large particles enter the fan, blocking the gap between the components, causing the fan not to rotate. This requires cleaning of foreign objects in the cavity and checking the gap between the impellers. Also check the cause of the foreign matter falling into to avoid another failure.
Roots blowers have 4 bearings. If the bearing is damaged, the gap between the impeller and the impeller, the shell and the wall plate will change, and the impeller will friction, which will cause the fan to not rotate. This is an indirect cause of changes in impeller clearance. This is also a common reason why impellers cannot rotate.
5. Component deformation
Deformation of parts caused by a Trilobite blower is rare. Roots blower manufacturers rarely reduce costs with components, and the strength of the components is not up to standard. If the thickness of the casting is too thin and the journal is too thin, if the strength of the part is not up to standard, deformation of the part may occur and the gap between the parts may be damaged.