FDNY Air Compressors (A-35) Exam Prep 2026 - Complete Practice Test

The proper way to safely shut down an air compressor is to gradually reduce operating pressure. This approach ensures that the compressor can shut down in a controlled manner, minimizing the risk of mechanical damage or operational hazards. By gradually decreasing the pressure, you allow the system to relieve excess pressure safely. This process also prevents sudden changes that can strain components, leading to potential failure or leaks.

In contrast, shutting off the main power immediately can cause a sudden stop that may put excessive strain on the compressor and connected systems, potentially leading to damage or safety issues. Leaving the compressor running until the next use is not advisable, as it can lead to unnecessary wear and potential overheating, along with energy inefficiency. Increasing air pressure before shutdown creates further strain on the system and can lead to dangerous conditions, such as ruptures or component failures. Therefore, the correct method promotes safety and longevity of the compressor.