1. Weft end sensor: clean the cover of the detector regularly (every four hours). When the machine is running, make sure that the white light is always on. The detector is designed according to the infrared principle, and the dazzling light will affect the performance of the sensor. Try to use only daylight tubes near the machine. If the spindle surface glows, the detector may not work accurately. Avoid using aluminum spools or black spools. Black veil will become a detector.

2. Broken weft sensor: In the normal operation of circular loom, when the weft is broken due to external force, the sensor detects the signal and sends it to the controller to control the circular loom to stop. If the weft is broken, the machine can't stop automatically: inching the machine makes the yarn guide tube of one shuttle run below the sensor, and manually breaking the weft quickly makes the steel ball enter the detection range of the sensor. At this time, if the red indicator light of the sensor is not on, the sensor position should be adjusted until the red indicator light is on or off.

3. Main speed detection sensor: During the normal operation of the machine, if the jumping range of the lifting frequency is large, it may be that the sensor missed the detection of the rotation of the main engine due to vibration. At this time, it is necessary to adjust the position of the sensor so that the head of the sensor is aligned with the toothed disc, and then observe the frequency conversion frequency. If it is a small jump, it can be done. After repeated adjustments, the effect is still not achieved. Replace the sensor.

4. Lift the detection sensor: If the man-machine interface cannot accurately record the output, check whether the wiring is correct. If the wiring is correct, adjust the sensor position, run the machine and observe whether the indicator light flashes. If not, consider replacing the sensor.