You can compare a control bar to a car: it needs to be taken care of. You need to replace parts such as lines and ropes. When? How often? What does the Afnor standard say about this?

Click this link below to download instructions (PDF document):

https://www.kiteattitude.fr/documents/Maintaining%20a%20universal%20bar%20-%20%20March%2031%202020.pdf