六, Excessive vibration
1. The pump shaft and motor shaft are not concentric
Exclusion method: Reinstall to achieve the required accuracy in the manual
2. Loose installation screws
Exclusion method: Tighten the screws
3. High speed or pressure
Exclusion method: Adjust to within the permitted range
4. Inhalation pipeline leakage
Exclusion method: Check the connections of the pipeline and seal them tightly
5. Insufficient oil absorption
Exclusion method: Same as before, exclusion method
6. There are bubbles in the oil
Exclusion method: Add oil or take structural measures to immerse the return port below the oil level
