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Wood chipper capacitor

Discussion in 'Appliances' started by Rekusu, 26 Mar 2020.

  1. Rekusu

    Rekusu

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    What ho one and all,

    I have an old electric wood chipper that mostly does not run but sometimes does. It is a Champion 2000W and has been challenging to dismantle.

    Having gotten it in bits, I see that it needs a new starting capacitor. I know nothing about caps but what is written on the side is 20uF +- 5% / 450v-DB HPFUP / 450v-DB HPFNT / 25/85

    What I have found on ebay is as the photo. Would this do the job?
    Cap.jpg

    Thanks, toodle pip and stay safe

    Rex
     
  2. Burnerman

    Burnerman

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    Yes, that will do just fine.
    John :)
     
  3. Rekusu

    Rekusu

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    Thanks, I will order one.
     
  4. Rekusu

    Rekusu

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    Fitted and almost working as it should.

    The chipper has a two way switch with a safety restriction lever. It allows the motor to run in either direction to feed material in or extrude it.

    But with the switch in either direction, the motor is turning in the same direction each time. Feed in / extrude; the motor is only running in one direction.

    I dismantled the switch mechanism and gave it a shot of switch cleaner, but that has made no difference.

    Any ideas on what would be causing the motor to run only one way?

    Toodle pip, thanks and stay safe.

    Rex
     
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  6. Nozzle

    Nozzle

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    Don't buy from electronic components from ebay unless you know the source is quality. Try CPC Farnell, Rapid, RS or 10's of other legitimate dealers. There are legit components traders on ebay - check out the registered business address.
    Nozzle
     
  7. Rekusu

    Rekusu

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    Thanks for your reply. Are you implying that even a starter capacitor could be faulty? The replacement certainly came from ebay and it appears to be doing its job in as much as it starts the motor.

    The problem is that the motor will not run in both directions. Or more specifically, it runs in one direction X times. Take a break and try in the other directions, and bingo, it suddenly runs in reverse. And then it is 'locked' in to reverse, even when changing the switch direction.

    Can this be caused by the cap?
     
  8. Nozzle

    Nozzle

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    Everything is made in PRC, but only some things are made in PRC to the quality specifications of a firm which outsources. If it's not in this category, it's in the other category.... that is to say, it looks the same and might function the same when brand new. Then it goes bang and sets your house on fire.

    The CE and EN marks mean diddly squat in the latter category, it's just another detail to add to the silkscreen printing and nothing more.

    Nozzle
     
    Last edited: 30 Mar 2020
  9. SFK

    SFK

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    Nozzle is correct that bad capacitors can go bang and best to get from reputable suppliers.

    But a good or bad capacitor will NOT change (or make a difference) to the direction of an AC motor.

    You change the direction of an AC motor by changing the wiring path to the AC motor.

    Do you have a picture of the wireing at the switch and/or the motor?

    SFK
     
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