Here are some ways to test the stability of the POY spinning machine:

1. Continuous running test: Let the testing machine run continuous spinning for a long time, such as continuous running for 24 hours or more, and observe whether there is failure, shutdown or significant performance decline during this period.

2. Process parameter monitoring: In the spinning process, continue to monitor the key process parameters, such as temperature, pressure, speed, flow, etc. Observe whether these parameters can be maintained within the set range and whether the fluctuation is within an acceptable small range.

3. Product quality testing: Frequent quality testing of the spun POY silk, including the diameter, strength, elongation, uniformity and other indicators. If the product quality remains stable for a long time and meets the standard requirements, the stability of the testing machine can be reflected to a certain extent.

4. Repeatability test: Repeat the same spinning process conditions many times to check whether the results obtained each time have good consistency.

5. Vibration and noise detection: The use of professional testing equipment to monitor the vibration and noise levels of the testing machine during operation. If the vibration and noise are within the normal range and relatively stable, it usually indicates that the equipment is running smoothly.

6. Electrical system stability test: check the voltage and current stability of the electrical system, and whether the response of the control system is accurate and timely, and whether there are abnormal signals or errors.

7. Environmental adaptability test: change the environmental conditions of the testing machine, such as temperature, humidity, etc., to observe its performance in different environments to see whether it can maintain stable operation.

8. Component temperature monitoring: Monitor the temperature change of key components to ensure that they do not overheat during long-term operation, and that the temperature rise trend is stable and within the allowable range.