COMMUNITY FORUM

Ichabod

05:28AM | 07/18/09
Member Since: 07/17/09
2 lifetime posts
Why not just give up on the centrifugal switch? Just take the wires off of it, remove the capacitor and connect them to an air conditioner compressor hard start kit. Go to: http://www.supco.com/images/09%20relay%20&%20hardstarts.pdf and select one of the SPP hard start kits appropriate for your motor. Start capacitors have a very wide tolerance. You should be able to buy one from your local a/c parts warehouse for less than $50. It consists of a capacitor in series with a thermistor. Replacing the run capacitor, if it has one, should be more simple. Be sure your unloader and check valve are working.

HTH

Ichabod

Cjinflorida

07:53AM | 10/17/09
Member Since: 10/16/09
1 lifetime posts
Steve,

I read the thread you posted as I'm attempting to remedy the same issue.

If you have any of your fix, it would be greatly appreciated.

Thanks,

Craig

azsteve

09:16AM | 10/18/09
Member Since: 11/04/04
12 lifetime posts
Craig,

I have put the file on a new hosting server. Here is the new link:

http://nh2az.com/files/compressor/compressor_fix.pdf

lorenb

02:10PM | 11/19/09
Member Since: 11/18/09
1 lifetime posts
Steve (or others)

Found this bargin "garage sale" craftsman air compressor that had the same problem mentioned (throws breaker at startup). Was thrill when I found your article until I opened mine up and it is different. The centrifugal mechanism is totally different. Now I am wondering if the capacitor may be the problem. My question is that there are two. One is in the endcap with the centrifugal mechanism and the other is mounted in a cover at the center of the motor. My question is which one controls startup and should be changed?

Any suggestions woould be appreciated.

Loren
2726-same_d23360_motor_bu

azsteve

07:54PM | 11/19/09
Member Since: 11/04/04
12 lifetime posts
Loren,

The concept is still the same. The capacitor you show in the picture controls startup. The contacts should have continuity while the motor is off. Assuming you have the unit unplugged, test to make sure the two spring contacts are really well connected (less than an Ohm). That is the only way the start capacitor will function.

It's hard to tell from the picture but you may have something missing or broken on the centrifugal mechanism. If you can send a few higher res close-ups at different angles to my corrected email listed in an earlier posting I will be able to tell you more. Turn the shaft so I can see the mechanism at different angles.

-Steve

greenheadhunt

04:12PM | 07/25/10
Member Since: 07/24/10
1 lifetime posts
Hi There

So I have the same issue

what was the outcome of the D23360 motor?

Thank you

azsteve

09:13PM | 07/29/10
Member Since: 11/04/04
12 lifetime posts
The type shown in the picures of a previous post is an AO Smith motor. There were actually 2 of these motors. One owner found a bad winding and repaired it successfully. The other I never heard the outcome.

AO Smith has a couple of manuals that may be of help on their website:

http://www.aosmithmotors.com

http://www.aosmithmotors.com/WorkArea/DownloadAsset.aspx?id=588

http://www.aosmithmotors.com/WorkArea/DownloadAsset.aspx?id=622

The first manual is for a pool pump motor but they are similar in design to the compressor motor and there is some very helpful troubleshooting information in it and info on how to identify and check windings.

The second manual is a nice general primer on AC & DC motors with some good theory and basics.

You won't find the manual for the compressor motor anywhere since this was a custom OEM design for the Craftsman compressor. D23360 is nothing more than a catalog number for a motor that was either made by GE or AO Smith. Each has a different switch design. The AO Smith switch is more reliable.

It has been my experience so far that if it is not the switch, it is the capacitors. If not the capacitors, then it is the windings.

Good luck and let us know how it turns out.

icrashrc

03:19PM | 08/10/10
Member Since: 08/09/10
1 lifetime posts
The caps and switchs are fine on my compressor. Has anyone found a replacement motor? Sears wants About triple what the motor is worth. Thanks!

Scott

in4ster

05:14PM | 09/10/10
Member Since: 09/09/10
1 lifetime posts
My run capacitor tests bad and I'm having no luck finding a replacement. Anybody know where to find one? It's labeled Cambridge Capacitors, M40F30 Nx1XF, 40uF+/-1-% -40/70C, 370VAC 50/60Hz, 9768399AKP2, File No. E128031, C22.2 No. 190, 0399
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