SIGforum
A question about AC Capacitors

This topic can be found at:
https://sigforum.com/eve/forums/a/tpc/f/320601935/m/6910026174

June 25, 2020, 05:37 PM
Skins2881
A question about AC Capacitors
You can replace the fan in 20 minutes yourself if you are comfortable with very basic wiring. I did mine and the cap on my old unit in no time flat, I am an electrician though. Cap is so cheap I would do it anyways at the same time. Look on your name plate and find the FLA for your fan to see if the tech is telling you the truth. Value should be within ~5% of the rating, you are way above that.



Jesse

Sic Semper Tyrannis
June 25, 2020, 08:15 PM
GarandGuy
Where was this thread five years ago? I learned about capacitors the hard way and taught both myself and my son a valuable lesson. My hand was numb and tingled for a couple days.


-----------------------------------------------
What's the sense in working hard if you never get to play?
June 25, 2020, 08:18 PM
PowerSurge
quote:
Originally posted by HRK:
Here are the motor specs and the model number
...

HC39GE242 Carrier OEM Condenser Fan Motor 1/4 HP 825RPM

Amazon has your motor if you don’t want to buy it locally. Looks like it won’t be there until next week.

https://www.amazon.com/Carrier...id=1593134334&sr=8-2


———————————————
The fool hath said in his heart, There is no God. Psalm 14:1
June 25, 2020, 11:25 PM
HRK
Thanks that’s the one I found as well

There is an A rating of 1.20

The meter showed 1:21-1.22
June 26, 2020, 07:17 AM
PowerSurge
Since it’s only over amping that small amount, I would just install the new cap when it comes in today and see how it performs. Meters can be off that difference between brands. The fan motor should start up with the compressor and be running full speed quickly. If it then isn’t performing right then replace the motor.


———————————————
The fool hath said in his heart, There is no God. Psalm 14:1
June 26, 2020, 10:00 AM
HRK
That's the plan, give that a shot, he said he'd like to see it in the .7-.9 range, but the sticker says 1.2

Seems to me 1.21 isn't that far out of spec, like you said it could be the meter.

Plus it's hotter than hades here for the last week so everything is running full bore.

Changed the AC Nest thermostat to maintain 78 all day and 76 at night, eliminated the day time increase to 82 to save power, not sure it does anyway since you have to crank the AC to bring it down from 82 to 78 you end up with extended run times.

When it's really hot I'd think we'd be better off with more short runs than a long hot run on the equipment...