Pulled blower motor wheel and housing out of air handler outside and used various different brushes to remove the caked on dust from the squirrel cage fins. After removing majority of the caked debris, I slid the blower motor wheel and housing back into The air handler and had the customer cycled the system on to verify that the fan was working properly. Once I was able to confirm that I had the customer cycled the system off and the fan did shut off properly. System is on and cooling at this time. Suggest to change filters every 30 days. Condensate line is flowing properly.