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The 3-speed configuration allows for precise airflow balancing between heating and cooling cycles
as original gaskets often degrade or tear upon removal of the face cover
the Modine replacement parts catalog relies on this specific geometry to prevent overheating of the heat exchanger and ensure proper heat throw
As indicated in the technical notes
While light carbon can be removed with a solvent
Siemens Combustion SQM50.464R1H3 Actuator 321894-709 The 3-speed configuration allows forThe Siemens SQM50. 464R1H3 is a high precision industrial burner actuator engineered for the positioning of flow control valves, dampers, and butterfly valves in large scale combustion systems. This rotary actuator delivers a robust 140 lb in torque, ensuring reliable movement of heavy air and gas dampers even under significant load. Designed for modulating control, it features a 135 ohm potentiometer for accurate position feedback and operates with a