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Changing Ceiling Fan Capacitor

Discussion in 'Troubleshooting and Repair' started by tr4falgar, Jun 8, 2017.

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  1. tr4falgar

    tr4falgar

    6
    0
    Jun 8, 2017
    Hi. Im just about to jump into electronics world. I got no basic about electronics. But seems like now, im in love with it.

    Hope could get some help here.

    A. Old fan capasitor. 2.2uf 800vac (burned)
    B. New fan capasitor. 2.5uf 400vac

    Im trying to find an exactly spec like the original capcitor (A). But seem cant find any around my town. So i get the (B) capasitor instead.

    My question is, what would its cause if i change the capacitor that has lower vac?
     
  2. ramussons

    ramussons

    374
    71
    Jun 10, 2014
    For even a 230 V AC fan, 400 V AC capacitor is good enough.
     
  3. tr4falgar

    tr4falgar

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    0
    Jun 8, 2017
    Great, it is 230v ac fan, thanks alot for the reply :)
     
  4. Minder

    Minder

    3,029
    641
    Apr 24, 2015
    Just insure it is AC Motor Run rated.
    M.
     
  5. tr4falgar

    tr4falgar

    6
    0
    Jun 8, 2017
    This the burned one.
    [​IMG]

    And this the replacement part. Is it looks like AC motor run rated?
    [​IMG]
     
  6. Minder

    Minder

    3,029
    641
    Apr 24, 2015
    Looks OK, but Chinese origin motor capacitors do not have a very good track record.
    M.
     
  7. tr4falgar

    tr4falgar

    6
    0
    Jun 8, 2017
    I've got no choice. For awhile gonna give it a try. I guess need to order online for better capacitors.
     
  8. tr4falgar

    tr4falgar

    6
    0
    Jun 8, 2017
    Am i connected it the right way? And how do i measure / check this capacitors. Im searching at youtube, seem no video about how to test this kind of capasitors. All of it just the round shape capasitors.

    [​IMG]

    This is my multimeter. Can it do the measurement?

    [​IMG]
     
  9. Minder

    Minder

    3,029
    641
    Apr 24, 2015
    For motor run/start capacitors there is no polarity to observe. either connection should work.
    I use N.A. made oil filled for reliability. CDE etc.
    M.
     
  10. tr4falgar

    tr4falgar

    6
    0
    Jun 8, 2017
    Im sorry, i coundn't understand the term N.A & CDE. Hope could get some explanation.
     
  11. Minder

    Minder

    3,029
    641
    Apr 24, 2015
    N.A.= North America.
    CDE = Cornell-Dubilier
    M.
     
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