1. Check all screws or nuts for looseness

　　2. Is the tightness of the belt appropriate

　　3. Whether the pipeline is normal and the oil level is appropriate

　　4. Whether the wires and electrical switches comply with regulations and whether the boundaries are correct

　　5. Are the pivot points of each wheel foot fixed or stable

　　6. Whether the belt pulley can be easily rotated by hand during compression

　　7. Before the compressor starts working, run it idle for 2 to 3 minutes or more, and then operate it normally

　　8. Check if the direction of operation is the same as indicated by the arrow. If not, swap any two of the three power supplies for the three-phase motor

　　9. Air purifiers should be regularly checked for contamination and adhesion, and filter cotton should be removed and cleaned (with air and oil) or replaced regularly to maintain good air filtration efficiency

　　10. After daily use of the air compressor, the drain valve of the bucket should be opened to remove any accumulated moisture and oil stains from the bucket

　　11. The cylinder head and copper pipe of the air compressor generate heat due to air compression, and the temperature is generally very high. This is an inevitable phenomenon and not an anomaly

　　12. If there is a power outage or use of the air compressor during operation, please cut off the power supply to ensure safety