Replacing Capacitor- Flexible on Voltage/Capacitance??

Discussion in 'General Electronics Chat' started by Twingall1, Jun 23, 2013.

  1. Twingall1

    Thread Starter New Member

    Jun 23, 2013
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    [​IMG]

    Hi,

    New to forum so unsure if this is the right category or even the right site.

    I'm fixing a 20" wood lathe (Clarke CWL6B).. Normal- plugs into household electrics in UK)

    I'm told the Start capacitor needs replacing (motor hums but no turning unless the drive wheel is spun by hand).

    The old, dud capoacitor is marked as shown: CBB60: 6uf, 400V ac.

    They don't seem to make ones with these exact specs now.. Either they're 450V or they're 12uf and up..

    Does this matter? Which units need to match and which can be flexible?

    Also, as you can see, the wired from the old capacitor are identical- does it matter which way these are joined to the capacitor? (is talk of polar/non-polar capacitors applicable here??)

    Thanks for any help, I'd really like to be able to fix this myself and save some money,

    Tom
     
    Last edited: Jun 23, 2013
  2. Dodgydave

    AAC Fanatic!

    Jun 22, 2012
    5,005
    745
    In UK yes they do at CPC


    £2.75 each, higher voltage is safer .
     
    Last edited: Jun 23, 2013
  3. Twingall1

    Thread Starter New Member

    Jun 23, 2013
    2
    0
    Thanks, Looks good re-specs but i just found out- needs to be higher heat resistance: Marked 110 Deg C on the outside of the cap holder..
     
  4. Dodgydave

    AAC Fanatic!

    Jun 22, 2012
    5,005
    745
    I hardly think that your motor will run at 110c, the winding will burn out well before then.
     
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