Speed changes in PSC motors when the value of the capacitor is changed. Not
a major speed change for the previously discussed values of 7.5uF to 10uF.

For the theoretical explanations, try a book with a detailed section on
Permanent Split Capacitor (PSC) type AC motors.
These motors have been used for deades and are still presently utilized in
many applications from fans and blowers to fractional HP gearhead motors.

PSC type motors differ greatly from split-phase capacitor start motors.

--
Cheers,
WB
..............


"cjt" wrote in message
...
Wild_Bill wrote:
It sounds as though you are in over your head, and it's time to get a
qualified, experienced person to take over the job.

A residential air system blower motor should work about the same with a
properly rated AC capacitor of 7.5uF or 10uF value (for a motor that's
marked for either a 7.5uF or a 10uF), with only a small difference in
motor speed.
snip

why would the speed change?