What should technicians ensure about refrigerant cylinders at all times?

Technicians must ensure that refrigerant cylinders are correctly labeled and maintained at all times to comply with safety regulations and to ensure effective management of the refrigerants. Proper labeling is essential for identifying the contents of the cylinder, which helps prevent accidental misuse or handling of hazardous materials. Additionally, maintaining the cylinders involves checking for proper pressure levels, ensuring the integrity of the cylinder itself, and verifying that it hasn't been subjected to any damage or corrosion.

Correct maintenance and labeling align with industry best practices, which are critical for environmental safety and compliance with EPA regulations. This diligence helps to protect technicians from potential hazards and ensures that refrigerants are handled appropriately during service and recovery processes.