Compressor capacitor

  1. N2ae86 Member

    Messages:
    121
    Bristol, Uk
    Gents,

    Wonder if anyone can help with a bit of advice.

    I was given a compressor a short while ago that doesn't want to start. Plan is to fix it up and give it to my dad to use. Having worked on it I suspect the issue is the capacitor (only thing left it can be).

    The dead capacitor markings are

    30UF ± 5%
    450v
    400V

    --------

    400v ~ Mk
    450v ~120/50
    500v ~ 120/10

    25/70 0c 50HZ


    I dont actually have a clue what any of that means but google tells me I need a 450V 30UF capacitor.

    Before I buy one - do I need to match the other information on the markings or will any 450V 30UF capacitor do the job?

    Thanks in advance.

    James
     
  2. frank horton

    frank horton V twins are great but 4"s rule.........

    Messages:
    128
    Location:
    manchester, UK
    go like for like, I have two motors that need the same capacitor................been told they are about £20.......well not very dear anyway.......
    either ebay or even machine mart.......loads'a places.......I intend to ask at a motor rewinders to see if it can be upgraded..........
    good luck Frank
     
  3. RonA

    RonA specialist in repairing sealed for life equipment

    Messages:
    608
    Location:
    Stockton on Tees, UK
    Recently bought one for my lathe motor from Ebay. Not very expensive & easy to fit, remembering to disconnect from the mains before doing so, of course.
    The first set of markings are the capacitor value (30 uF) +- 5% tolerance on capacitor value(450V) max working voltage. You can forget about the other numbers
    RonA
     
  4. N2ae86 Member

    Messages:
    121
    Bristol, Uk
    Thanks RonA - thats exactly what I needed to know! :thumbup:
     
  5. pedrobedro

    pedrobedro Man at Matalan

    Messages:
    8,325
    Location:
    CX Derbyshire
    I bought one from a local electronics and general electrics shop for a pressure washer. It was physically smaller but same capacity and worked fine. It cost just under £8.
     
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