What to Note When Operating High-Pressure Centrifugal Fans

What to Note When Operating High-Pressure Centrifugal Fans

Several precautions must be observed when starting high-pressure centrifugal fans. Please review the details requiring attention. Monitor the bearing temperature and ensure adequate cooling of the high-pressure centrifugal fan. 1. Maintain stable pressure oil supply to rolling bearings. Keep bearing operating temperature below 60°C (maximum 70°C). Inlet oil temperature: 35°C–45°C; outlet oil temperature: 55°C–65°C; temperature rise must not exceed 40°C. 2. For grease-lubricated rolling bearings in high-pressure centrifugal fans: - Bearing operating temperature should remain below 70°C, with a maximum tolerance of 80°C. - Inlet oil temperature: 35°C–45°C - Outlet oil temperature: 55°C–65°C - Temperature rise should not exceed 40°C. 3. High-pressure centrifugal fan sliding bearings: Normal bearing temperature below 70°C, permissible temperature up to 80°C. Inlet oil temperature: 35°C–45°C; outlet oil temperature: 55°C–65°C; temperature rise less than 40°C. 4. High-pressure centrifugal fan sliding bearings: Normal bearing temperature below 65°C, permissible up to 70°C. Inlet oil temperature: 35°C–45°C; outlet oil temperature: 55°C–65°C; temperature rise: less than 35°C. 5. Monitor unit vibration and impact sounds. Verify bearing housing amplitude using a vibration meter. 6. Listen carefully for abnormal noises or irregular sounds within the machine. 7. Monitor motor load using an ammeter. Avoid prolonged operation of the centrifugal fan under heavy load conditions. 8. For centrifugal fans handling dust or coal, verify that dust and ash levels meet the fan's operational requirements. 9. For heat-resistant centrifugal fans, monitor whether the fan temperature exceeds the specified limit and observe changes in gas temperature.