Siemens Building Technology GCA131.1U Actuator 320720-756 or unusual grinding noises during

or unusual grinding noises during operation

it matches original equipment tolerances for noise reduction and airflow

the inducer is likely compromised

Always verify the valve stem diameter and series prefix before installation

The Johnson Controls A70GA-2 Temperature Control is a heavy-duty

Siemens Building Technology GCA131.1U Actuator 320720-756 or unusual grinding noises duringThe Siemens Building Technology GCA131. 1U Actuator is a heavy duty spring return rotary damper actuator designed for the digital or analog control of building HVAC dampers. Operating on 24VAC DC, this OpenAir series component delivers 160 lb in (18 Nm) of torque, making it suitable for larger air handling units, mixed air, and exhaust dampers. This model features 3 point floating control and a 90 second nominal runtime, ensuring precise positioning