From: ehsjr@verizon.net   
      
   On 2/10/2024 10:53 PM, peter@easthope.ca wrote:   
   > Hi,   
   >   
   > A friend has a Kaussmann heat pump in her home.   
   > It produces a noticeable but not loud whine.   
   >   
   > Heated air is dispersed by a centrifugal fan with squirrel cage about   
   > 80 cm long x 9 cm diameter.  The blades are about 1 cm wide and 10 cm   
   > long.  10 cm x 8 segments = 80 cm.   
   >   
   > One of the blades is missing from the rightmost segment of the   
   > squirrel cage and that may be the source of the whine.   
   >   
   > According to the owner, Kaussmann is defunct.  Any ideas about repair?   
   >   
   > Thanks,                         ... P.   
      
   That missing blade might be correct.  It could be that   
   there is a set screw holding the squirrel cage assembly   
   to the fan motor shaft accessible where (and because)   
   the blade is missing. I'm speculating, not sure.   
      
   Ed   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)