Belimo AFXUP-S N4 Actuator 322056-301 you should also inspect the

you should also inspect the motor and bearing bracket

allowing for high-accuracy performance across diverse HVACR applications

Buzzing is typically caused by low voltage or debris between the plunger and the tube head

Direct OEM Fit: Drop-in replacement for discontinued models like the AP10552MH-3

) assembly features a robust cast iron body and brass trim

Belimo AFXUP-S N4 Actuator 322056-301 you should also inspect theThe Belimo AFXUP S N4 Actuator is a high torque, spring return damper actuator engineered for rigorous commercial HVAC and industrial applications. This universal power supply unit operates on a wide voltage range of 24V to 240V AC or 24V to 125V DC, eliminating the need for separate transformers in the field. Built with a robust NEMA 4X (IP66) enclosure, it is specifically designed to handle wash down environments, high humidity, and outdoor exposure