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Old 05-23-2011, 09:31 PM   #16
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New compressor motor acting up; or something else?


And can you kindly take a few pics from further away so we can see all of the wiring together? The tops of the caps and where each wire is going in one or two pics?

Oh, and right side up would be great!! Thanks.

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Old 05-23-2011, 09:32 PM   #17
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New compressor motor acting up; or something else?


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Was the orignal problem the same thing, the fan shutting off while the compressor was staying on?

Yes but this time the motor will eventually come back on if I pull the disconnect box and re-connect it, then set the thermostat to call it up.

When the original motor died, there was NO resurrecting it, no matter what we tried.

The caps look as if they are okay. No oil leaks and no bulging.
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Old 05-23-2011, 09:42 PM   #18
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New compressor motor acting up; or something else?


Looking okay can be deceiving. You'd need to test amp draw from the wires to the fan from the cap and check it against manufacture rating or disconnect the wires from the caps, discharge it and test it/them with a meter with mfd reading capability. Actually, I'd do both. If that fan is pulling higher than normal amps than it is definitely overheating. Next step would be burning out completely.

I have a hunch that you need the EXACT same replacement motor, not one that is 5 rpms or even 1 rpm lower. The same hp and rpms.

Last edited by Doc Holliday; 05-23-2011 at 09:45 PM.
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Old 05-23-2011, 10:03 PM   #19
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New compressor motor acting up; or something else?


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Originally Posted by Doc Holliday View Post
And can you kindly take a few pics from further away so we can see all of the wiring together? The tops of the caps and where each wire is going in one or two pics?

Oh, and right side up would be great!! Thanks.

It's dark now but here are a few others I took. Hope they help.
Attached Thumbnails
New compressor motor acting up; or something else?-comp-contact.jpg   New compressor motor acting up; or something else?-contactor-zoom.jpg   New compressor motor acting up; or something else?-fan-cap2zoom.jpg   New compressor motor acting up; or something else?-wiring-contactor-relay.jpg   New compressor motor acting up; or something else?-motor-wiring2.jpg  

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Old 05-24-2011, 04:45 AM   #20
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New compressor motor acting up; or something else?


Post brand and model number of the outdoor unit. Also post a pic of the fan and how far the blades are down in the unit.

Also, if you can, post the FLA of the fan motor listed on the units data tag, and the amp rating of the new motor for the HP its wired up as.
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Old 05-24-2011, 09:22 AM   #21
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New compressor motor acting up; or something else?


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Post brand and model number of the outdoor unit. Also post a pic of the fan and how far the blades are down in the unit.

Also, if you can, post the FLA of the fan motor listed on the units data tag, and the amp rating of the new motor for the HP its wired up as.


Amana Prestige
Model - RCE48C2A
MFG NO - P1248005C

This is a multispeed universal motor, so for the 1/4 HP the FLA is 1.7A The fan blades are mounted butted up to the motor. That is how it was mounted on the old one.
Attached Thumbnails
New compressor motor acting up; or something else?-photo-1.jpg   New compressor motor acting up; or something else?-photo-2.jpg   New compressor motor acting up; or something else?-photo-3.jpg   New compressor motor acting up; or something else?-photo-4.jpg  
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Old 05-24-2011, 09:54 AM   #22
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New compressor motor acting up; or something else?


Again, the EXACT same motor, hp and rpms and not one less of each ABSOLUTELY must be in there.


Condenser Motor Selection Guide

CHARACTERISTIC
SAMPLE
Horse Power
Size can range from 1/6 on small residential units to 1.5 horsepower on large rooftop units.
Amps
Select a motor with the same or slightly higher current draw, even if the next larger HP is required.
Service Factor
S.F. is the additional current draw above the rated amps the motor can safely operate with out over loading the motor.
RPM
Revelations per minute the fan blade will turn at. Most use 1075 RPM. On low noise units 850 is used. You must use the same as the original motor to move the proper CFM
Mounting
3 Lug Mount, Through bolt mount, Belly Band, wrap around mounting bracket, or Saddle/Cradle Mount for belt driven fans
Position
Shaft Up, Shaft Horizontal, Shaft Down or Any Angle Mount. Most replacement motor can be mounted in any position.
Rotation
CW, CCW, or Reversible. Most field replacement motor can be switch from CW to CCW by a simple interchange of 2 wire connections. 3 Phase motors can be switch by interchanging any two leads.
Capacitor
Shaft Diameter
1/2 HP and under are 1/2" with one or two flat sides - larger motors will be 5/8" shaft with a keyway
Shaft Length
Motor shafts are 3" to 6-1/2". If the shaft is to long it can be cut to the desired length.
Body Diameter
Most AC condenser fan motors are 5.6" or 5-5/8" diameter. Refrigeration fans can be 5" or smaller
Body Lenght
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Old 05-24-2011, 10:07 AM   #23
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New compressor motor acting up; or something else?


this guy greatly upped his rpm's and his replacement is only lasting 20 minutes. You slightly slowed yours down so it's lasting 2 hours.

http://answers.yahoo.com/question/in...0190241AAoaWne
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Old 05-24-2011, 10:15 AM   #24
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New compressor motor acting up; or something else?


http://www.terrylove.com/forums/arch...p/t-36718.html


"Do not install a higher HP or lower RPM motor. A higher HP will cause excessive Amp draw and cause premature failure of the new motor; lower RPM will not move enough air across the condenser coils and cause elevated pressures in the refrigerant circuit and loss of system efficiency. Trust the people who engineer these systems, they know what they are doing."
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Old 05-24-2011, 10:57 AM   #25
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New compressor motor acting up; or something else?


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Originally Posted by Doc Holliday View Post
Was the orignal problem the same thing, the fan shutting off while the compressor was staying on?

Yep but unlike this motor, you could not get it to come back on.

Update - A/C company came out a lil while ago and checked over everything. Only charged me a trip charge of $37. As you all said, and what I suspected the unit is okay, and the pressure is okay. The motor is too small to run in this unit.

Now to see if my friend can get this one exchanged for the right one. I spent 70 bucks on this one, so I HOPE she can get it swapped. I already figure that the right motor will run right between $125 to $175. This company said that if I cannot get it exchanged to call them back and they might be able to work something out with me.

Thanks everyone for the help!
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Old 05-24-2011, 12:29 PM   #26
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New compressor motor acting up; or something else?


I'm waiting for the first tech - friend to call me back, but in the mean time I am trying to track down the part to get an idea how available it is, and what cost I am looking at.

The original motor part #5KCP39HFS264CS

Yeah not so much luck finding this online. Is that the norm when it comes to HVAC parts? I see a lot of items out there but this one is like looking for needle in a haystack!
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Old 05-24-2011, 06:36 PM   #27
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New compressor motor acting up; or something else?


Sorry, I meant to look at the condensers data label, and see what FLA the OEM fan motor was.


Those old RCE's are touchy about the condenser fan motor you use.

At 1.7 FLA and 230 volt, thats closer to a .42 HP, then it is to a 1/4 HP motor. Did he install a 10 or 7.5 cap for it.

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