On Fri, 3 Feb 2017 10:17:20 -0800 (PST), "
wrote:

On Friday, February 3, 2017 at 1:00:51 PM UTC-5, wrote:

http://store.eurtonelectric.com/capa...1-1-1-1-1.aspx


You will need an AC-rated motor-start capacitor. But, typically, such a capacitor provides the initial *OOMPH* to get the initial turn on the motor, after which it more-or-less goes away. If the motor starts without difficultly, even if it takes a while to spool up, the cap's work is done in the first few second or so.

If you do replace it, DO NOT use a conventional DC cap, even two caps back-to-back. Non-Polarized does not equal AC rated.

This may also be a Motor-Run capacitor, but in that case, there should be two, a START and a RUN. Runs are almost never electrolytic types. Again, it must be AC rated.

Note: If a start cap, the motor will not start without it. If a run cap, as it weakens, the motor will run improperly or not make speed at all. And if not there, the motor will not start at all as the cap is required to "rotate the field".

Peter Wieck
Melrose Park, PA
The cap is a start AND run cap. It always stays in circuit and is a
compromise between the proper phase shift for starting and for
running. If it gets replaced it will be with an AC rated cap. I'll
make sure to get a motor run cap too.
Thanks,
Eric