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Author Topic: AC capacitor question  (Read 1918 times)

Offline Mike67

  • VIP Member
  • Member Since: Jun 2017
  • Posts: 3
AC capacitor question
« on: June 26, 2017, 06:18:51 PM »

I have a Comfort MODEL NAC036AKC3 AC. I would like to get a spare capacitor.My problem is it was replaced about a year ago, and the old one that was taken out has this on it.
97F9970                       
50uf  5uf  370VAC                               
+06 - 06%   50/60Hz                                   
Protected  P968
S10000AFC    DIELEKTROL                   
HC98JA051D
I am not sure if they replaced it with the same one or not.
 Looking on the internet for a new one all the parts places say the one that fits that model is Dual, Round, 370 Volts, 35/3 Microfarads.Also one site said Dual, Round, 440 Volts, 35/5 Microfarads. My question is the difference in Microfarads.
My AC works fine but i'm not sure what to get for a spare.Can I replace a 370v 50/5 with a 370 35/3 or 440 35/5?
Thank you for any help you can give.

Offline scrapiron

  • Technician
  • Member Since: Nov 2011
  • Posts: 681
  • Country: us
  • Service Tech Since 1974
Re: AC capacitor question
« Reply #1 on: June 26, 2017, 08:00:18 PM »
Stay with the 370v 50/5. You can go higher in voltage rating, but don't go less on the MFD rating. It's important for the proper operation of the compressor and the fan motor.
« Last Edit: June 26, 2017, 08:01:04 PM by scrapiron »

Offline Mike67

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  • Member Since: Jun 2017
  • Posts: 3
Re: AC capacitor question
« Reply #2 on: June 27, 2017, 09:15:11 AM »
Thank you for your help I will get a 370v 50/5.

Offline Tjreardon

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  • Member Since: Aug 2017
  • Posts: 6
Re: AC capacitor question
« Reply #3 on: August 10, 2017, 04:29:27 PM »
Make sure you get a U.S. made capacitor or you will be replacing it again after one season.

Offline jagboy69

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  • Member Since: Sep 2017
  • Posts: 5
Re: AC capacitor question
« Reply #4 on: September 25, 2017, 07:46:17 PM »
Keep in mind, the 50uf is for the compressor and the 5 is for the fan motor.  You can string caps together to get what you need.  If you want spares, just get a couple of 50's and a couple of 5's.  You pay extra for dual run caps.  I avoid them when I can.  Just need to make one jumper wire for the Common.  ;-)

Offline dennispalmer

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  • Member Since: Jul 2018
  • Posts: 7
Re: AC capacitor question
« Reply #5 on: July 09, 2018, 07:52:19 AM »
I think going or stay with 370v 50/5 capacitor would be the best possible option because it is the compatible version for your system.