The operating environment of the polypropylene spinning machine and how to check the normal operation of the polypropylene spinning machine are as follows: 

1. The transmission part should be running smoothly without abnormal noise. 

2. Under normal working conditions, the surface temperature rise of the screw extruder gearbox should not exceed 30 °C. The temperature rise of the metering pump gearbox should not exceed 20 °C. 

3. When the ambient temperature is lower than 28 °C, the average temperature of the front and back surfaces of the spinning box insulation layer should not exceed 65 °C. 

4. Pipe joints must not leak. 

5. The wind speed of the air blower should be stable, and there is no sharp floating or merging phenomenon. In the ring blowing device, the wind speed difference rate of the single spinning surface on the same horizontal surface should be no more than 15, and the wind speed difference rate of the single spinning position on the same horizontal surface of the side blowing device should be no more than 20. 

6. The tow channel and the tow contact area should be smooth and not hanging. 

7. The biphenyl pipeline shall be tested for air tightness according to the values specified in the technical documents and shall not leak. 

8. Spinning box should be manufactured, tested and accepted according to GB 150 and supervised by TSG R0004--2009.

9. The temperature difference between the fixed temperature measurement points of the spinning box heated by the heat medium should not exceed 2 °C. The temperature difference between the fixed temperature measuring points of 

10. electrically heated spinning heads should not exceed 3 °C. 

11. The temperature control accuracy of each zone of the screw extruder should be ±2 °C. 

12. screw extruder melt pressure control accuracy should be ± 0.3 MPa. 

13. metering pumps should comply with FZ/T 92026. 

14. spinnerets shall comply with FZ/T 92038. 

15. Electrical equipment and lines are well insulated with insulation resistance ≥1 Mi2. 

16. metal casing protective grounding is reliable, grounding resistance ≤ 0.1 Q. 

17. Electrical components shall be capable of withstanding a withstand voltage test for 1 min, with a test voltage ≥ 1 500 V, and must be disconnected when testing components that cannot withstand the above-mentioned high voltage.

18. Spinning machine should be painted in accordance with FZ/T 90074.