It is recommended to match the 1140 RPM specification

protecting the furnace or air handler from airflow restriction

always remove the solenoid coil before brazing and use individual heat-sink wraps on each port to protect the internal seals from thermal damage

This is an open motor

While typically used in classical industrial drives

Nidec-US Motors 28 Rain Shield 319847-401 It is recommended to matchProtect your motor internals with the Nidec US Motors 28 Rain Shield, a professional grade condenser fan motor drip shield engineered for rigorous field use. Designed for technicians who prioritize equipment longevity, this shield prevents moisture, debris, and environmental contaminants from entering the shaft bearings and windings, common failure points in vertical shaft up motor configurations. With a precision stamped 6 3 8" nominal diameter and a