Ensure the door is flush against the frame to depress the switch plunger

Bearing Protection: Prevents moisture migration down the shaft into the motor housing

cracked porcelain insulators

For remote access

Trane WHL0476 Wheel 30067439-890 Ensure the door is flushThe Trane WHL0476 is a heavy duty centrifugal blower wheel engineered for high static pressure applications in commercial and industrial HVAC systems. This OEM replacement part is built to the exact tolerances required for high volume airflow, featuring a 13 3 8 inch diameter and a 12 5 8 inch width. Designed for reliability in the field, it utilizes a 5 8 inch bore for a secure press fit or setscrew attachment to the motor shaft, minimizing vibration