Originally Posted by
eyecue
Spiff got it right. The machines had a squirrel cage fan in them and they moved A LOT of air ALL the time. They had a cloth type filter inside that was much like a vacuum cleaner bag and it was prone to getting very dirty and the prescribed maintenance interval would not keep the machines running.
The cost got to be too much and they were pulled.
Dyson can figure out how to make a vacuume that doesn't get clogged, without a bag. Someone could figure out how to make a puffer work without stripping 2,000,000 people a day.
