Step1: Disconnect power and ensure the refrigeration unit is fully off.
Step2: Remove access panel to reach the old fan motor assembly.
Step3: Label and disconnect all electrical wiring from old motor.
Step4: Remove mounting screws and carefully extract motor and fan blade.
Step5: Install new motor in same orientation, ensuring rotation direction matches blade.
Step6: Secure fan blade and tighten set screw firmly without over-torquing.
Step7: Reconnect wiring, restore power, and check smooth rotation and proper airflow.