BOTH caps may be bad, are they in the same can?  The centrifugal switch OPE=
NS the start cap circuit, once the motor is up to 70% or so.  You should no=
t get just a kick as you say, that motor should speed up to 70% just on on =
the start cap, and start winding.=20
Swap the cap(s).

> From: rdawson16@hotmail.com
> To: piclist@mit.edu
> Subject: RE: [EE] Testing an AC motor
> Date: Mon, 23 Mar 2015 22:38:03 -0700
>=20
> There are two motor windings start and run.
> It sounds like the start cap does not check out as you say it does, ohmin=
g it out shows that its a cap, but the value is low.  Hard wire your start =
cap to that winding, and apply power (thu the cap) it should turn...
> Once that start cap charges up, its almost an open circuit. If the start =
cap is actually low in capacitance, its not conducting long enough for the =
centrifugal switch to kick in. Swap the start cap, the value is not critica=
l, 40 uF or so, (the voltage rating is).
>=20
> > Date: Tue, 24 Mar 2015 00:27:53 -0400
> > From: picdude3@narwani.org
> > To: piclist@mit.edu
> > Subject: [EE] Testing an AC motor
> >=20
> > Hi all,
> >=20
> > My high-school robotics team has this mill (=20
> > http://www.amazon.com/Grizzly-G1006-Mill-Drill/dp/B0000DD0AF ) and the=
=20
> > motor recently stopped.  If I switch it on repeatedly, every few times=
=20
> > it will "kick" is smidge as if it wants to come on, but does not.
> >=20
> > It has 2 capacitors (run and start) and a centrifugal switch on the=20
> > motor shaft with a switch.  And it runs on 110VAC.  I'm not sure what=20
> > type of motor it is.
> >=20
> > So far, I've checked both capacitors (had them tested and they're fine)=
,=20
> > plus I've checked the centrifugal switch, cleaned the switch contacts=20
> > and verified that the switch makes contact when the centrifugal switch=
=20
> > is manually flipped outwards.  I've also gone through the junction box=
=20
> > on the side of the motor, verified and tightened up all connections and=
=20
> > tested the power switch to ensure that works fine.
> >=20
> > I was thinking that if I can get another motor from elsewhere I could=20
> > swap that in to verify that everything I've tested so far does indeed=20
> > work properly, but so far I can't get a hold of another. According to=20
> > the manufacturer, since all else checks out, it must be the motor, but=
=20
> > before I have that shipped off, what else can I check or how can I test=
=20
> > the motor directly?
> >=20
> > Thanks,
> > -Neil.
> >=20
> >=20
> >=20
> > --=20
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