Re: Exhaust fan delayed start
Yup! Definitely worth cleaning, lubricating, and reinstalling. While the fan and motor are out, clean the housing and duct as best as possible to reduce restriction to airflow.
As you're cleaning and lubricating the motor, pay special attention to how much play there is in the shaft, not only side to side, but back and forth (end to end ). You can purchase shims to shim the shaft in one direction or the other to limit play which will dampen vibrational noise (usually indicated by a surging sound ). Also, a slow wind up of the fan can indicate that it needs shimming in one direction or the other.
When you disassemble the motor for cleaning and lubrication, pay special attention to how you take it apart so that all shims, spacers, and any other parts are put back in their original location. If you find you need shims, you can do two things. First would be to find an electric motor repair facility, they will have shims. Second would be to go to a hobby shop specializing in radio controlled vehicles and purchase shims for an E-Maxx differential, they are the perfect size for most small fans.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!