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Tumble Dryer Capacitor

Discussion in 'Power Electronics' started by Simon Ledden, Nov 15, 2020.

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  1. Simon Ledden

    Simon Ledden

    2
    0
    Nov 15, 2020
    I need to change the capacitor on my hoover condenser tumble dryer. It says to discharge it by rubbing against the drum, as there is no space to get a screwdriver in there. How do you discharge a capacitor in this way when it has insulated connectors? Crapping myself at the mo.
     
    Last edited by a moderator: Nov 16, 2020
  2. Bluejets

    Bluejets

    4,277
    909
    Oct 5, 2014
    Not a good idea to discharge any cap with a screwdriver or short.
    Best use a 1k5 5w resistor with a couple of leads soldered on the ends.
    Naturally power off and plug pulled out of the wall socket.

    What makes you think the cap needs replacement.??

    On the other hand, if it is defective, it should have zero charge anyhow.
    All a bit up-in-the-air fault .......
     
  3. dave9

    dave9

    961
    252
    Mar 5, 2017
    ?? You pull the connectors off first, then as bluejets stated, connect a high ohm resistor between the contacts.

    However, this is not really necessary. It's only going to be at line voltage if any voltage is present, not going to arch a significant distance. Simply do not touch the contacts, handle by the metal case and if extra paranoid, wear insulating gloves. Once it is removed, you have no space constraints to deal with it.
     
  4. Simon Ledden

    Simon Ledden

    2
    0
    Nov 15, 2020
    Thank you for replying guys. @Bluejets - my drum does not turn and makes a humming sound. Chaged belt but no joy, still same.
     
  5. Harald Kapp

    Harald Kapp Moderator Moderator

    10,591
    2,360
    Nov 17, 2011
    Before you start swapping components, make sure all the wiring is correct, firmly connected, screws tight, no wires broken. Also check the windings of the motor for continuity, see if any fuses are o.k.
     
  6. Bluejets

    Bluejets

    4,277
    909
    Oct 5, 2014
    On the right track but I'd test it before chucking it out anyhow.
     
  7. upaceme2

    upaceme2

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    0
    Jul 13, 2020
    Sounds to me like the centrifugal switch on the motor is stuck open to the motor run winding. Hold the door switch closed,start the dryer and turn the drum by hand. If the motor takes off and the drum turns, the switch is stuck. The switch closes to the start winding when the motor stops, opens to the run winding when the motor slings the switch open while running. Lint is usually the culprit.
     
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