Belimo AFB24 Actuator Freon or "thumping" noises during the

or "thumping" noises during the startup cycle

and liquefied petroleum (LP) gas-air mixtures when used in an appropriate regulator body

What are the signs that this booster assembly needs replacement

Deadband Protection: Eliminates bypass air by ensuring one port is fully closed before the other opens during the 2-4 psig transition

and beverage dispensers that require a constant differential to regulate temperature between 43°F and 48°F

Belimo AFB24 Actuator Freon or "thumping" noises during theThe Belimo AFB24 is a robust heavy duty spring return actuator engineered for precise on off mechanical fail safe operation in demanding HVAC systems. Delivering 180 in lb of torque, this motor is designed to drive large control dampers or valves to a safe position during power loss. Operating on a universal 24VAC DC power supply, it offers flexible integration for commercial retrofits and new builds alike. As a direct replacement for the legacy