To use this D&B Audiotechnik flying frame, first check that all the visible hardware is in place. Make sure to attach it properly to your Ci/Qi series loudspeakers. Be careful when handling the frame due to the bent bolt. During setup, keep an eye on the bent bolt to ensure it doesn't cause any problems. For maintenance, regularly inspect the hardware for any signs of wear or further damage. If you notice any issues, it's best to consult a professional. Always follow safety guidelines when working with this frame and loudspeakers.