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Carpet Cleaner Circuit / Transformer

Discussion in 'Troubleshooting and Repair' started by Avaman, Jul 3, 2018.

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  1. Avaman

    Avaman

    3
    0
    Jul 3, 2018
    Hi All,

    I am not in any way clued up with regards to this, but hope I can explain the issue a little bit...

    I have a carpet cleaner / washer that works fine, except the brush won't turn. I have managed to identify (I think) that the main unit (which also detaches as a hand-held wet vacuum) also powers the brush by means of 'plugging into' the main unit when it is used within it, and this power is taken through the device to the bottom where (I think) the power is converted from 240v to 15.5v, which drives a motor, which in turn rotates the brush. I think there could be an issue with the 'transformer' or the circuitry between as I believe the motor to be OK. I have a couple of pictures of [possibly] the offending part, and also the model number etc. of the device (attached).

    Any advice, help on parts etc would be good! I can't really afford a new cleaner unless I have to, plus I like this one!!

    Many thanks
     

    Attached Files:

  2. Minder

    Minder

    2,922
    615
    Apr 24, 2015
    If you are sure the motor is low voltage and if it is DC, a test could be used on it using an automotive battery .
    Disconnect the motor first.
    Also check the 15vac with a meter.
    M.
     
  3. Bluejets

    Bluejets

    3,775
    782
    Oct 5, 2014
    Are you sure it's not clogged up with strands of carpet?
     
  4. Avaman

    Avaman

    3
    0
    Jul 3, 2018
    Thanks, I will try this. :) if the motor does indeed perform, what would then need replacing ?
     
  5. Avaman

    Avaman

    3
    0
    Jul 3, 2018
    No, I have thoroughly cleaned it.
     
  6. Minder

    Minder

    2,922
    615
    Apr 24, 2015
    Depends on what is between the motor and power supply, if the motor checks out then the next thing would be the 15v.
    After that, any controller between the 15v and motor.
    M.
     
  7. dave9

    dave9

    863
    211
    Mar 5, 2017
    I doubt this is an elaborate setup. You pictured a transformer. Measure whether there is the rated voltage coming out of it. I'm skeptical that they even went tot he trouble of a full bridge rectifier and capacitor, but you can look and see what is there.

    If the transformer is not outputting rated voltage, no need to trace the circuit towards the motor, instead see if it has 240VAC input.

    This seems like a pretty basic circuit so I have some concerns that you're going to need to probe this live. Well, not entirely live, you can do some things with power off like measure the resistance of the primary winding of the transformer, if there is an embedded thermal fuse in it that failed it will read open circuit with no power applied (too).

    Otherwise, if the transformer is outputting the appropriate voltage you trace the wires, or do a continuity check between point A and B, which seems to be the connector the attachment plugs into, and so on, with the attachment connector to the point where the wiring connects to the motor.
     
  8. duke37

    duke37

    5,297
    739
    Jan 9, 2011
    Check there is a connection through the motor.
    Look for a commutator, if present, check the carbon brushes.
     
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