What action follows the replacement of a defective detector?

After replacing a defective detector, conducting a thorough investigation is crucial. This action ensures that the root cause of the detector's failure is understood, which can prevent future issues. It is essential to assess whether the failure was due to external factors, product defects, or other underlying issues in the fire detection system. Investigating thoroughly helps to maintain the integrity and reliability of the entire fire detection and alarm system, ensuring safety standards are upheld.

On the other hand, updating the system may not be necessary immediately following a component replacement unless the investigation reveals significant system deficiencies. Notifying the fire department is not typically required for a maintenance issue like a defective detector unless the malfunction leads to a safety concern that necessitates their intervention. Conducting regular maintenance is vital for overall system functionality but typically occurs on a scheduled basis rather than directly in response to the replacement of a specific detector.