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I hv a CA unit M#SCU10A30A-A3 370VAC unit & need new fan motor. Fan motor AO Smith M# F42C52A45, 1/5HP,1075 RPM, 208-230V, 42Y frame w 3 mounts to lid. What is replacement ID & where can I get one?

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4 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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dmftrucker
  • 1922 Answers

SOURCE: home ac compressor fan won't turn all the time.

your looking at $175-$225 for just the single phase motor depending where you purchase, I just replaced mine(identical unit) due to screaming dry bearings, if you replace it your self make sure to keep new wires tight along side of unit or fan will cut them if loose and its a fan- 5mfd/25mfd compressor@440volt cap

Posted on Sep 27, 2009

Testimonial: "Thank you, you gave me exactly what I asked for. Now I can shop wisely. Tim"

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thepool
  • 78 Answers

SOURCE: Need manual for D1036 AO Smith 1075/3 SPD 48Y Frame 1/3 HP motor

AO Smith will send you a manual. Contact info http://www.aosmithmotors.com/contact/contactform.aspx?ekmensel=fb5d653b_6_16_btnlink

Posted on Apr 21, 2010

  • 674 Answers

SOURCE: unsure of capacitor terminations for ao smith condensing fan moto

Does the motor data plate say anything about the motor. You can hook up a motor like yours with 3 wires. First use an ohmmeter and check the resistance between the brown/white wire to the black then the yellow wire. The resistance between brown/white and one of the others should be pretty much 0 ohms. If not check between the brown wire and the black and the yellow. Which ever wire has 0 ohms with the brown/white wire is the common leg. You can put a wire nut on the brown/white, it will not be used. Next the brown should be for the start winding and the other wire left over will be the run winding. Then connect the common to L2. L1 will go to the run winding and one side of the capacitor and brown will go to the other side of the capacitor. I hope this isn't too confusing. Let me know if I need to explain it better.

Posted on Jun 09, 2010

Testimonial: "Thank you very much for your help-I had the motor leads reversed and when I placed the brn/white to the common on cap like someone else had instructed it of course shunted out and blew the fuses in the disconnect. I used my meter(duh) and switched the motor leads. We got air!! THANK YOU!"

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1 Answer

Rheem condenser fan motor


"the guy" added another start capacitor because the motor installed is actually better than spec. Your unit calls for 1/5 HP, 1050 RPM motor. The installed device is 25 rpm faster, and 1/4 HP.

The Rheem/Weather King/Corsaire/RUUD part number is 51-23055-11 (replaces many other Rheem/Corsaire/Weather King/RUUD Part #s including 51-21855-01)! It takes a 3 uf Capacitor rated at 370 volts. This Motor mouts with screws in the SIDE, instead of mounting studs coming out the back!!

Normal price for a generic motor w/ cap will be $125 or so, OEM part will be closer to 200. This is without the fan blade. Make sure you get the correct side mount studs.

This vintage unit is rated at only 10 SEER and is less energy efficient than a modern window air conditioner. Its days are numbered, and you are paying at least double every time it runs. Before you sink much money into this unit, please consider replacing it before it has a heart attack. Replacing it during the off season is cheaper anyway.

Please mark my answer down as helpful.

Jan 05, 2015 | Heating & Cooling

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Removing furnace blower fan


1)Flip the furnace circuit breaker to the "Off" position to turn off the power to the furnace unit.
2) Press in the release button and pull the door off.
3)Remove the nut holding down the control panel of the furnace unit using a 7/16 socket wrench. The control panel is often found below the burners of the unit. Let the control panel hang in place.
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Jul 22, 2012 | AO Smith Lennox Furnace Motor P-8-6426 3/4...

1 Answer

I need a 1/8hp 115v 1075 2sp swamp cooler motor


Unless you can find an HVAC shop with a NOS motor for this unit you will not find a drop in replacement. Even if you do get lucky and find a NOS motor be prepared to pay nearly as much for it as you would a whole new evap cooler.

That said, there are motors out there that will work, but you're going to have to make them fit with custom mounts.

It's still a little spendy, especially if you want two speeds like the original motor had, but you can get out for $80 or less if you're willing to settle for one speed (on/off).

boatandrvaccessories.com has a "Packard 40066" compressor motor for $69 plus $13 shipping. It may work but has only one speed.

Basically what you're looking for is a "48 frame", 1/8 hp, direct drive, 110-120v, 1075rpm, 1/2" shaft diameter and around 3" in length (to give you flexability when mounting), "totally enclosed" or "open drip-proof" housing (NOT "open"). Rotation can be either CW or CCW as you can mount the motor on either side of the housing and some motors are reversable. If you've got the skill to custom make some mounts then you can probably fudge some of these specs. The ones you can't change are the 1/2" shaft and the RPM. Do not exceed 1075rpm. The blower assembly simply can't be made to go much faster in that housing and if you try you will overheat the motor and burn it out very quickly (trust me on this one!). Most of the cheap motors I've found are 208-230v and I just don't see the point in having a small 220v PORTABLE evap cooler, that's just dumb.

After a LOT of online research I've found the following motors that would be a suitable replacement, with all the above mentioned specifications. I'm sure there are more, but cross referencing this information for someone not in the business is tricky and time consuming.

AdobeAir 1/8 HP 115V Motor for Adobe MMB10A RF031095 $116.66
http://www.comfortgurus.com/product_info.php/cPath/25_142/products_id/7451

Emerson 4856 (k055srj4796722b) (www.emersonmotors.com)
A.O. Smith 136A (UH1036NB) (www.aosmithmotors.com)
Magnetek 136 (now owned by A.O. Smith - www.aosmithmotors.com)
Fasco D733 or D261 (fasco.com)
Marathon X924 (www.marathonelectric.com)
AdobeAir RK232A check acehardwaresuperstore.com
Emerson K55HXKZT-9867

Grainger.com is a good resource but they are expensive.


The motors listed are suitable replacements, but have only one speed, "ON" or "High".

Packard 40066 - 115v 1075rpm $69 - SINGLE SPEED

A.O. Smith 321P177
A.O. Smith 323P077
A.O. Smith 323P487
A.O. Smith 323P490
A.O. Smith 323P677
A.O. Smith U6521
A.O. Smith UH1016
A.O. Smith UH1026NB
A.O. Smith UH9034
A.O. Smith US1016
A.O. Smith US1016NB
A.O. Smith ORZ1026
Brownell MTG3206
Century C045A
Carrier HC37DX120
Emerson 9034
Fasco D834
Franklin 8736010170
Franklin 8715810230
Franklin 8735810180
GE 3081
GE 3206
GE 3950
Grainger 3M658
Grainger 3M800
Grainger 3M828
Grainger 3M829
Marathon X302
Mars 03950
Packard 70066
Packard 40066
R.E. Michael 1E521
Reznor 55682
Reznor 64678
Rotom R12177
Rotom R12834
Rotom UH9034
Trane MOT6195
Universal U136
Universal U177
Universal U380
Universal U566
Universal U730


Good reading for selecting a replacement motor:
http://www.aosmithmotors.com/WorkArea/DownloadAsset.aspx?id=13100

I suppose that if you found a smoking deal on eBay for an "Open" type motor you could try it, but I doubt it would last long and make damn sure that ****** is grounded well.

Jul 06, 2010 | AdobeAir Mobile Swamp Evaporative Air...

1 Answer

Have a master cool MMB10 and all of a sudden the fan runs slower on both speeds. Motor bad or something else?


Mine did that too. Either the motor needs to be cleaned out or the motor is shot. You can try to have the motor repaired. If that fails a replacement motor is about $120 if you can find one.

I posted this to another solution for someone looking for the motor:

Unless you can find an HVAC shop with a NOS motor for this unit you will not find a drop in replacement. Even if you do get lucky and find a NOS motor be prepared to pay nearly as much for it as you would a whole new evap cooler.

That said, there are motors out there that will work, but you're going to have to make them fit with custom mounts.

It's still a little spendy, especially if you want two speeds like the original motor had, but you can get out for $80 or less if you're willing to settle for one speed (on/off).

boatandrvaccessories.com has a "Packard 40066" compressor motor for $69 plus $13 shipping. It may work but has only one speed.

Basically what you're looking for is a "48 frame", 1/8 hp, direct drive, 110-120v, 1075rpm, 1/2" shaft diameter and around 3" in length (to give you flexability when mounting), "totally enclosed" or "open drip-proof" housing (NOT "open"). Rotation can be either CW or CCW as you can mount the motor on either side of the housing and some motors are reversable. If you've got the skill to custom make some mounts then you can probably fudge some of these specs. The ones you can't change are the 1/2" shaft and the RPM. Do not exceed 1075rpm. The blower assembly simply can't be made to go much faster in that housing and if you try you will overheat the motor and burn it out very quickly (trust me on this one!). Most of the cheap motors I've found are 208-230v and I just don't see the point in having a small 220v PORTABLE evap cooler, that's just dumb.

After a LOT of online research I've found the following motors that would be a suitable replacement, with all the above mentioned specifications. I'm sure there are more, but cross referencing this information for someone not in the business is tricky and time consuming.

AdobeAir 1/8 HP 115V Motor for Adobe MMB10A RF031095 $116.66
http://www.comfortgurus.com/product_info.php/cPath/25_142/products_id/7451

Emerson 4856 (k055srj4796722b) (www.emersonmotors.com)
A.O. Smith 136A (UH1036NB) (www.aosmithmotors.com)
Magnetek 136 (now owned by A.O. Smith - www.aosmithmotors.com)
Fasco D733 or D261 (fasco.com)
Marathon X924 (www.marathonelectric.com)
AdobeAir RK232A check acehardwaresuperstore.com
Emerson K55HXKZT-9867

Grainger.com is a good resource but they are expensive.


The motors listed are suitable replacements, but have only one speed, "ON" or "High".

Packard 40066 - 115v 1075rpm $69 - SINGLE SPEED

A.O. Smith 321P177
A.O. Smith 323P077
A.O. Smith 323P487
A.O. Smith 323P490
A.O. Smith 323P677
A.O. Smith U6521
A.O. Smith UH1016
A.O. Smith UH1026NB
A.O. Smith UH9034
A.O. Smith US1016
A.O. Smith US1016NB
A.O. Smith ORZ1026
Brownell MTG3206
Century C045A
Carrier HC37DX120
Emerson 9034
Fasco D834
Franklin 8736010170
Franklin 8715810230
Franklin 8735810180
GE 3081
GE 3206
GE 3950
Grainger 3M658
Grainger 3M800
Grainger 3M828
Grainger 3M829
Marathon X302
Mars 03950
Packard 70066
Packard 40066
R.E. Michael 1E521
Reznor 55682
Reznor 64678
Rotom R12177
Rotom R12834
Rotom UH9034
Trane MOT6195
Universal U136
Universal U177
Universal U380
Universal U566
Universal U730


Good reading for selecting a replacement motor:
http://www.aosmithmotors.com/WorkArea/DownloadAsset.aspx?id=13100

I suppose that if you found a smoking deal on eBay for an "Open" type motor you could try it, but I doubt it would last long and make damn sure that ****** is grounded well.

Jul 04, 2010 | Mastercool Portable Air Conditioner

1 Answer

Home ac compressor fan won't turn all the time.


your looking at $175-$225 for just the single phase motor depending where you purchase, I just replaced mine(identical unit) due to screaming dry bearings, if you replace it your self make sure to keep new wires tight along side of unit or fan will cut them if loose and its a fan- 5mfd/25mfd compressor@440volt cap

Sep 27, 2009 | Goodman CLQ36AR49 Air Conditioner

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