This part number generally refers to the bracket itself

or excessive dust accumulation on the blades

it is also found in specific Carrier

Versatile Application: Primarily used in Reznor unit heaters and duct furnaces to confirm combustion air inducer operation

Tecumseh K90-97 Overload Relay 321142-301 This part number generally refersThe Tecumseh K90 97 Overload Relay is a high precision thermal protection component engineered specifically for hermetic compressors in commercial refrigeration and HVAC systems. As a veteran technician knows, maintaining the integrity of the motor windings is critical; this external overload protector monitors current draw and temperature, safely interrupting the circuit before thermal runaway can damage the internal motor. It is a direct fit for