Step1: Disconnect electrical power to the unit before servicing to prevent shock hazards.
Step2: Open the access panel and locate the existing microlever door switch near the door mechanism.
Step3: Label and disconnect the wire terminals from the old switch carefully.
Step4: Remove mounting hardware and install the new switch in the same orientation.
Step5: Reconnect wiring securely and verify the lever moves freely when the door opens and closes.
Step6: Restore power and test door safety switch operation before normal use.