Before starting the polypropylene spinning machine, check whether there is any problem in each component. If there is any problem, it should be dealt with first to ensure the normal operation afterwards. The following is an introduction to the operation of the polypropylene spinning machine.

1. The driving part shall operate smoothly without abnormal sound.

2. Under normal working conditions, a screw extruder gearbox surface temperature rise shall not exceed 30 ℃.Metering pump gearbox temperature rise shall not exceed 20 ℃.

3. Environmental temperature 28 ℃, lower than spinning box before and after the thermal insulation layer surface average temperature should not be greater than 65 ℃.

4. No leakage at the pipe connection.

5. The wind speed of the blowing device should be stable, and there should be no violent pendulum or wire doubling. The difference rate of wind speed on the same horizontal surface of single spinning position in the ring blowing device should not be greater than 15, and the difference rate of wind speed on the same horizontal surface of single spinning position in the side blowing device should not be greater than 20.

6. The wire channel and the contacting parts of the wire bundle should be smooth and free of wire hanging.

7. The gas tightness test of the biphenyl pipeline shall be conducted according to the specified value of technical documents, and no leakage shall be allowed.

8. The spinning box shall be manufactured, tested and accepted in accordance with GB 150 and subject to the supervision of TSG R0004--2009.

9. Heat medium heating of spinning box fixed temperature measuring point temperature difference should not be more than 2 ℃.

10. Electric heating spinning head fixed temperature measuring point temperature difference should not be more than 3 ℃.

11. Screw extruder district should be plus or minus 2 ℃ temperature control precision.

12. The control precision of melt pressure of screw extruder should be plus or minus 0.3 MPa.

13. The metering pump shall comply with FZ/T 92026.

14. The spinneret shall comply with FZ/T 92038.

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

16. The protective earthing of metal case is reliable, and the ground resistance is no more than 0.1 Q.

17. The electrical components shall be able to withstand a pressure test lasting 1 min, and the test voltage shall be greater than 1 500v. The components that cannot withstand the above high voltage must be disconnected during the test.

18. The spinning machine shall be coated in accordance with FZ/T 90074.