or catastrophic bearing failure in air handling equipment

protecting the integrity of the heat exchanger

Constructed with a sensitive

Vibration Reduction: High-grade material construction helps absorb harmonic resonance

often leading to evaporator freeze-ups or poor cooling capacity

Siemens DDC 550-430 Actuator 320788-703 or catastrophic bearing failure inThe Siemens DDC 550 430 is a high performance BACnet VAV Actuator designed for DDC terminal box controller applications. Operating on the BACnet MS TP protocol, this integrated unit provides precise, pressure independent control of VAV zone level routines. With a 44 lb in (5 Nm) nominal torque and a 90 second run time at 60 Hz, the Siemens OpenAir GDE series ensures reliable damper positioning for HVAC building automation. The on board differential