Can sprinkler turn-off control values be adjusted?

• A. Yes
• B. Only with authorization
• C. No
• D. Not at all times

Answer: (C)

Sprinkler turn-off control values are safety-critical settings that determine how and when the system returns to standby after activation. Because these values directly affect the system’s ability to protect lives and property, they must not be adjusted by an alarm operator or by anyone without proper authorization. Any change can alter activation thresholds, timing, and the reliability of the protection, potentially creating gaps in fire detection or causing unwanted shutdowns.

If a adjustment seems necessary, the correct path is to involve qualified fire protection personnel or the system manufacturer, with clear authorization and documentation from the authority having jurisdiction. They would perform the change and conduct the required testing and re-certification. In normal operations, those values should remain as configured by the design and installation team.