Central Vacuum systems
I'd recommend that once you do have the manufacturer's name and the model number of the unit written down, try calling any of the central house vacuum dealers/vendors listed in your local phone book. You may also want to try using Yahoo! or Google to search for the manufacturer by name.
Also, you could use Yahoo!'s business pages directory service to locate central house vacuum dealers/vendors in larger cities reasonably close to your location in FL. Many of those dealers/vendors have sources for parts from many different manufacturers, and may even know whether or not the manufacturer of your unit is still in business.
It may take several phone calls, so be patient. Good luck!
Jim D/Heathsville, VA
Try searching for the manufacturer there. If no luck, may have to replace the central vacuum unit.