Kirby fans
We sometimes forget that the METAL fans could chip and break and even cause a cracked fan housing.
Then the GRAY fan that was good but will develop tiny cracks that will get bigger and break.(I changed one yesterday.)
I have never seen a broken WHITE fan.Scratched and beat up but not broken.As above small bits of broken safety glass might not be a problem.(I might use an Electrolux with the C bag or even shop vac.)At the first VCCC Kirby visit we saw pans of nuts,bolts,screws,etc that were fed into Kirbys in the test lab.They held up well and have been improved since.
I have seen cases where the lint from new carpet filled the bag,then fill tube and fan chamber.This caused friction,heat and some warping of the fan.