If the capacity of the air compressor is really too low, check the following: Check differential pressure over oil separator. Replace separator when necessary. Check and replace compressed air filters (if installed). Compressor does not unload. Check if pressure switch is correctly set and working.
[pdf] Motor Power: 22KW to 250KW | 30HP to 335 HP Working Pressure:3 – 5 Bar | 0.3Mpa to 0.5Mpa Free Air Delivery (FAD): 2.74 to 64.54m³/min | 95 to 2280 CFM Delivers efficient, space-saving performance with integrated storage for continuous, reliable air supply.
[pdf] Displacement (m³/min): It refers to the volume of air discharged by the compressor per unit of time, also known as flow rate or volumetric flow rate. Discharge pressure (MPa): It indicates the pressure of the air at the compressor’s outlet, usually measured in megapascals (MPa).
[pdf] 
