Annual Major Inspection Items for Rooftop, Central, and Industrial Air Conditioning Systems
(Recommended before seasonal transitions-spring to summer or autumn to winter)
Item Inspection / Action
Full-System Nitrogen Pressure Test Verify system integrity to prevent refrigerant leakage.
Vacuum Treatment and Refrigerant Recharge If leakage has occurred, ensure a complete vacuum is drawn before recharging refrigerant.
Replace Filter Drier Prevent moisture and contaminants from damaging the compressor.
Check/Replace Compressor Capacitor A degraded capacitor can lead to startup failure or inefficiency.
Software/Controller Firmware Update For intelligent control systems, it is recommended to inspect and update firmware as needed.