To clean a misting fan, remove the misting nozzle. Soak the nozzle in warm water with about half a cup of vinegar in it. \
The vinegar will provide natural acid to clean gunk out of the nozzle. \
After the nozzle has soaked for at least 5 minutes, rinse it thoroughly under clean water to remove debris. Let it dry and re-attach the nozzle to see if the misting function now works. \