FDNY COF to Operate and Maintain Air Compressors (A-35) Practice Exam

Fraying or cracking of compressor belts is a direct indicator that they are wearing out and likely need to be replaced. Belts are subjected to tension and stress as they operate, which can lead to deterioration over time. When belts begin to fray, it signifies that the material is breaking down, which can eventually lead to belt failure if not addressed. This visible wear can be easily checked during routine maintenance and can help ensure the compressor runs smoothly and efficiently.

Other signs like high noise levels, low air pressure, and frequent overheating may indicate different issues within the compressor system. While these symptoms may indirectly relate to belt function—such as a misaligned or damaged belt causing noise or affecting performance—they are not direct indicators of the physical condition of the belts themselves. In contrast, fraying or cracking is a clear and immediate sign that prompts proactive maintenance actions.