Hi Guys!
Old School meets New School!

Over the last Year I have had several instances to question the old drive belt maxim of.-
If a drive belt starts to squeal check for tightness and it's wear rate? Change if necessary!.

I have not seen it in any training manual, but when some of the drive belts I have changed recently have occasionally started to squeal.

I have changed them to notice a huge drop in the VSD running amps.

Others I have changed as part of a maintenance routine, have also shown large running amp reductions.
Which leads me to believe that the soft start action of VSD drives, can hide drive belt wear and their reduced efficiency?

On one set recently the average running of 45hz instantly dropped to 35hz when I changed the belts. At the time I could see no physical evidence of any undue wear.
Has anyone seen similar?
Grizzly