On Tuesday, January 29, 2019 at 8:04:14 AM UTC-5, Terry Coombs wrote:
Â* No , not because I hung it too low . The old (freebie) fan in our
living room decided to start squeaking , so I ordered a replacement -
and 2 more for other rooms since we wanted the same unit throughout the
house and these were a good buy . Nice factory refurb Hunter 52" 5
blades , 4 speed though the sales literature says 3 . The first 2 went
on the short downrods included , but the 3rd needed a longer rod since
the ceiling is vaulted . And it's the only one that didn't run perfectly
balanced out of the box . So here's the thing - it runs rock steady at
all but one speed (2nd slowest) where it has a very slight maybe 1/4" or
less wobble . I did check blade alignment before balancing , all within
1/16" . It's not enough wobble to be annoying , you don't even notice it
unless you're looking for it . I'm just puzzled why it only occurs at
the one speed .

--
Snag
Yes , I'm old
and crochety - and armed .
Get outta my woods !

For the same reason out of balance tires typically only show up at certain
speeds. They have certain speeds where the characteristics of the system
allow it to resonate. Kind of like a tuning fork will resonate at a
certain frequency. You can fix it by placing small weights, like maybe
one or more dimes, on one of the blades by trial and error. There should be
instructions for doing that for that fan or if not, follow instructions
for a similar fan.