A technician receives 'empty' return cylinders from a job. Which practice is safe and legal?
Explanation
Safe, legal practice is to recover any remaining refrigerant heel and to use only reusable recovery cylinders that are undamaged and within their required hydrostatic test interval. Disposable DOT-39 cylinders must never be refilled, cylinders should not be stored near heat sources, and pressure relief devices must never be removed. Damaged or out-of-date cylinders should be taken out of service.
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