What is the maximum allowed time for a compressor to fill up a dry system to its required pressure?

The maximum allowed time for a compressor to fill up a dry sprinkler system to its required pressure is indeed 30 minutes. This regulation ensures that the system can be charged effectively and efficiently without significant delays that could lead to issues with performance or functionality.

The rationale behind this time limit is tied to the operational reliability of the dry system. In the event of a fire or need for activation, it is critical that the system has reached the required pressure in a timely manner. If the filling process takes too long, it may hinder the system's readiness to respond to an emergency, compromising safety.

Additionally, the specified time frame aligns with industry standards and best practices to maintain system integrity. It provides enough time for the compressor to adequately fill the system while minimizing the potential for delays and ensuring that all system components can perform as intended under the designed operational conditions.