If an oxygen service rated enriched air cylinder is filled with standard compressed air, what should you do?

If an oxygen service rated enriched air cylinder is filled with standard compressed air, having it serviced by a qualified technician is the most appropriate action. This is essential because the cylinder is designed to handle higher oxygen content and must adhere to specific safety and operational standards. Filling it with standard compressed air can introduce contaminants and could lead to issues with the cylinder's integrity or performance.

A qualified technician can assess the situation, determine if there are any safety risks, and ensure that the cylinder is properly inspected and, if necessary, cleaned or reconditioned before refilling it with the intended enriched air. This step is crucial to ensure safety during diving operations, as using a cylinder that has not been properly serviced could result in accidents or compromised dive conditions.

The other options may seem sensible at first glance, but they do not address the potential risks and necessary safety precautions that come with using specialized equipment designed for enriched air.