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Thread: Blower motors-Carrier
05-16-2012, 01:03 AM #1
Please forgive me for my ignorance, but what is the secret code or cypher to figure out a motors HP?
I usually, 95% of the time, am working on Trane family stuff and they like to write ( fill in the blank) on the unit tags and motors with a HP number.
I'm sure that I am fixing to get a shpeel about BHP and etc. But what the hell is the problem with these freakin idiot engineers there. The ones that cant put run caps in accessible places,
05-16-2012, 01:29 AM #2Professional Member
- Join Date
- Jun 2011
Most of the blower motors I've seen have the rating on the name plate. Normally says 1/2HP or 3/4HP or 5HP or whatever the rating is.
If it is in WATTS, then 746 Watts at the shaft is 1HP. Otherwise I am not sure what you are referring to. I've never noticed a cypher or code on a motor. Are you referring to the model number maybe?
05-16-2012, 08:54 AM #3
05-16-2012, 09:12 AM #4
Dig into the manual.
Somewhere in the airflow charts, it gives the HP of the motor for calculating brake horsepower.
They're oddball numbers. I just replaced a 2.3hp motor, I think it was.
05-16-2012, 09:46 AM #5
You could match the amps to another motor.
On the carrier blower motors you have to be careful of the Y in the frame number. When carrier puts a "Y" after the frame number , they have shifted the bolt pattern location on the motor.
If you use a regular 56 frame to substitute a 56Y the motor pulley will not align with the blower pulley. They do this on purpose.
A.O. Smith H97_ series are matches for many of these motors.I miss you mom and dad.
05-16-2012, 10:24 AM #6