It is standard practice to replace the drier whenever the system is opened for service or a major component fails

If the switch opens below 650 PSI

or the motor pulling excessive Amps while humming without rotation

Manual Override with Set-and-Hold: Facilitates system commissioning and testing even when the main controller is offline

Nidec-US Motors 9721 Motor 323055-751 It is standard practice toField proven and built for the rigors of commercial refrigeration, the Nidec US Motors 9721 Motor is a specialized 3 in 1 multi horsepower powerhouse designed to streamline local truck stock. Engineered as a direct replacement for PD1127, this 3. 3 inch diameter motor provides a reliable retrofit for hundreds of OEM shaded pole evaporator fan applications found in Heatcraft, Bohn, and Chandler equipment. Featuring a Permanent Split Capacitor (PSC)