Roots blower should do the following preparations before starting up 

 Roots blower is a type of centrifugal fan commonly used in industrial fields to increase gas pressure and flow. Before starting, the following preparations need to be made: 

1. Check the power supply: Ensure that the power supply of the blower is properly connected and sufficient power supply is available.2. Cleaning inspection: Check the degree of cleanliness inside and outside the blower, and debris or dirt that may affect the operation. 3. Lubrication system: Check the oil level and oil quality of the lubrication system to ensure that the lubricating oil is sufficient and meets the requirements of the manufacturer. 4. Heat dissipation system: Check the heat dissipation system of the blower to ensure that the heat sink or radiator is not blocked and can effectively reduce the temperature of the blower. 5. Drive system: Check the drive belt, gearbox or other drive components of the blower to ensure that they are not damaged or excessively worn. 6. Pipe connection: Check the connection between the blower and the gas pipe to ensure that the connection is tight and reliable without leakage. 7. Control system: Check the blower control system to ensure that each sensor, instrument and automatic control device works normally. 8. Measures: Understand the operating procedures of the blower, ensure that you understand the operating procedures of the blower, and take necessary measures, such as wearing personal protective equipment, ensuring that the work area is clean and tidy, and complying with relevant regulations. 9. Preheating: Before starting the blower, preheat the blower according to the manufacturer's recommendations to ensure its normal operating temperature. 10. Starting sequence: According to the starting sequence of the blower, follow the correct steps to start the drum