Roots fan is a positive displacement fan commonly used in water treatment equipment, it is mainly used to provide gas pressure and flow. Here are some common faults of Roots fan in water treatment equipment and their solutions:

1. Excessive noise: It is normal for Roots fans to generate noise during operation, but if the noise is abnormally high, it may be due to the following reasons:
   • Impeller wear or imbalance: The solution is to replace the worn impeller or make balance adjustment.
   • Loose fan base: Check base bolts and retighten.
   • Intake or exhaust pipe leakage: check whether the pipe connection is well sealed, if there is leakage, it should be repaired in time.
2. Excessive temperature: Roots fans may become too hot after a long period of operation, and possible causes include:
   • Insufficient or contaminated lubricant: check the quantity and quality of lubricant, add or replace the lubricant in time.
   • Severe dust accumulation inside the fan: clean up the dust inside the fan and keep the ventilation open.
   • Fan overload: Check the fan load and reduce the load or increase the number of fans if necessary.
3. Excessive vibration: Roots fans produce a certain amount of vibration during operation, but if the vibration is abnormally high, it may be caused by the following reasons:
   • Impeller imbalance: Perform balance adjustment of the impeller.
   • Loose fan base: Check base bolts and retighten.
   • The fan is not firmly connected to the foundation: check the connection between the fan and the foundation to ensure that the connection is firm.
4. Decrease in airflow: If the airflow provided by the Roots blower decreases significantly, this may be due to the following reasons:
   • Clogged intake or exhaust piping: clear the piping of debris or dirt.
   • Severe impeller wear: Replace worn impeller.
   • Fan speed slows down: check motor operation to ensure that the motor is working properly.