Well, the Electrolux Olympia One was made from 1978-1982, i believe. It is considered by many collectors as one of the best machines ever produced by Electrolux as these year were considered their heyday, when machines were made to last. As you can tell, 30 plus yrs later, many Oly's are still going strong as ever.
The few draw backs of these era machines was the original woven hose. They are/were prone to develop leaks, and are not very long, and are not very flexible.
This hose should be replaced with a newer vinal hose which is much mre user friendly. They are avalible on E-Bay.
Another drawback is the not very agressive Power Nozzle,(by todays standards) but its all in the eye of the beyholder. The Olympia PNs are excellent on shorter carpet naps, or any carpet that is not thick, heavy shag.
Do you understand about the Automatic Control? If not, this feature keeps the bag from overfilling and the motor from overheating. Once the bag is full, (to the point of where you have set the dial) the machine will stop, and the front end bag door will pop open. This keeps the machine from loosing too much suction and also keeps the motor from over heating.
Many Lux Owners keep the Automatic Control set at 3 (3 lines showing on the dial), this will make the machine open when the bag is approx half full.
Some owners like to fill the bag completly, until its totally full. In this case, have all 6 lines showing on the dial.
Some owners use a new bag each time they use the machine, reguardless of how full the old one is.
Im sure others can give you more info. Hope this helps.