Dual start/run capacitor?

Reply

  #1  
Old 08-27-15, 06:15 PM
B
Member
Thread Starter
Join Date: Aug 2001
Location: USA
Posts: 62
Received 0 Votes on 0 Posts
Dual start/run capacitor?

I've been boning up on HVAC capacitors and I thought I understood the basics. A start capacitor gives a motor a bit of a push to get it started, a run capacitor keeps the motor running without any up or down spikes, and a dual run capacitor is just two run capacitors in one housing - one for the fan and one for the compressor. But this site seems to be saying that a dual run capacitor is a start capacitor and a run capacitor in a single housing. What's going on?
 
Sponsored Links
  #2  
Old 08-27-15, 06:30 PM
Houston204's Avatar
Forum Topic Moderator
Join Date: Oct 2009
Location: Texas
Posts: 7,425
Received 17 Votes on 14 Posts
You had it right. Don't believe every site that you run across.

It almost seems like that was translated.

I run across many belt drive motors that have a start cap and a run cap. (CSR). Capacitor start and run.
I wonder if that is what the original message was trying to refer to?


Most belt drive motors that I use have a start cap but no run cap (CSiR). capacitor start / induction run

Most residential outdoor fan motors have a run cap but no start cap. (PSC) permanent split capacitor

A shaded pole motor doesn't use a cap at all. Bathroom exhaust fans are usually shaded pole.

That greasy looking Global run cap is a terrible product.
I backed my van up to a dumpster and tossed every one I had because they usually failed in less than 6 months.
 
Reply
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: