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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
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    • CommentAuthorRex
    • CommentTimeOct 29th 2021
     
    What ho one and all,

    Unfortunately, not a building question but definitely green related.

    I have a Parkside (Lidl) wet/dry vac that had seen many years of excellent service. Yesterday, annoyingly, it gave up the ghost. With two options available, discard or check the problem and perhaps repair, I chose the latter.

    Very simply, it was a burnt ot carbon brush that is theoretically, easy to replace.

    The attached photo is what I took out and I can find many possible matches on the internet (https://www.ebay.co.uk/itm/383709765591?mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338722076&toolid=10001). But none have measurements.

    I mailed one ebay seller and had the following reply, "Fits for 30/60/70/80/90L Industrial Vacuum Cleaners." Which is not exactly an answer to my question.

    My vac is a Parkside 30/7E but given its age, I cannot find any parts related reference.

    Am I correct in assuming that all this 'type' for 30/60/70L vacs are a universal fit?

    Thanks and toodle pip.
      20211028_161959 (Small).jpg
    •  
      CommentAuthordjh
    • CommentTimeOct 29th 2021
     
    Posted By: RexAm I correct in assuming that all this 'type' for 30/60/70L vacs are a universal fit?

    I don't know but maybe its worth buying one or two to try them for fit? It should also be fairly easy to sand a brush down in size a bit if necessary.

    Also, have you called the Parkside support number? In my experience they've been very helpful and managed to sort problems I had. They may be able to supply the spares or tell you where to get them.
    • CommentAuthorrevor
    • CommentTimeOct 29th 2021
     
    Looks like a pretty standard item fitted something similar in size to a vac a while ago. Have you a local electrical shop that do repairs they are likely to have a selection and may be willing to sell you a set.
    •  
      CommentAuthordjh
    • CommentTimeOct 29th 2021
     
    Posted By: revorHave you a local electrical shop that do repairs

    I remember them, in fact I used to work in one whilst I was at school. :bigsmile: But I don't think we've got any electrical shops at all now, let alone ones that do repairs. There are some appliance repair places though; it might be worth asking them?
    • CommentAuthorRex
    • CommentTimeOct 29th 2021
     
    Thanks for the replies.

    Have a Euro something locally but they are only interested in fridge and washing machine sales.

    There is a Repair Cafe some distance away, but my guess is, they will know less that I do and I am able to repair it, just need the part.

    Will give Parkside a call but not holding my breath. Agreed that the best way is to buy a pair for the few £s that they cost and in all likelihood, they will fit. But if not, not a great loss.
    • CommentAuthorRex
    • CommentTimeOct 29th 2021 edited
     
    Kinda dumb question but a carbon brush, such as this,

    https://www.amazon.co.uk/EsportsMJJ-Motor-Carbon-Brush-Electric/dp/B078N7SJ4H/ref=pd_lpo_1?pd_rd_i=B078N7SJ4H&psc=1

    does the brass (or is it copper) disk at the end just make spring pressure contact with the fitting at the top of the part in my photo? Or would it be a soldered length of wire?

    If the former, certainly, I could sand the brush to fit the holder.
    •  
      CommentAuthordjh
    • CommentTimeOct 29th 2021
     
    Posted By: Rexdoes the brass (or is it copper) disk at the end just make spring pressure contact with the fitting at the top of the part in my photo? Or would it be a soldered length of wire?

    I think the brass disk is just there to hold the spring in place, and to provide a good contact surface onto the housing.

    If you needed to reduce the cross-section of the brush, you might also need to reduce the size of the disk a bit too, so it will fit in the housing.
    • CommentAuthorEd Davies
    • CommentTimeOct 29th 2021
     
    •  
      CommentAuthordjh
    • CommentTimeOct 29th 2021
     
    https://www.ebay.co.uk/itm/183739038793

    everything after the ? is usually tracking junk
    • CommentAuthorGareth J
    • CommentTimeOct 30th 2021
     
    As above, measure yours, then look for a listing that has dimensions on it ignore model and brand at this point. Then, hopefully you'll find a listing that says something like "6x8x20mm carbon brushes, 408 Flymo" or whatever. Then you can widen your search and look for just "408 Flymo brushes" and buy some you feel are decent quality.

    (The numbers and brand is totally made up)

    Failing that, go oversize. They file and sand very easily.

    While you have it open, check bearings for smoothness/play.
  1.  
    https://www.bbc.co.uk/news/business-41119355

    Prior to 2017, vacuum cleaners had large and inefficient motors and fans, because consumers chose "the most powerful" ones. Even if most of that power was emitted directly as heat and noise without first becoming suction!

    Many models were redesigned when the product efficiency regulations came in, replaced by models that do the same job but with much less energy consumption. (Edit- the regs require 98% of dust to be picked up with less than 900W power consumption. They used to require efficiency labels A-G, this was suspended a few years later due to legal actions, but the efficient motors are still being used)

    It perhaps might be a false economy to repair rather than replace an energy-hungry vacuum cleaner? A bit like repairing an incandescent light bulb!

    It would be great if we could buy a new efficient motor and fan and keep all the plastic body bits, but that's unlikely to happen.

    I fell in this trap by replacing the brushes in our old washing machine. It was a lot of work and my satisfaction quickly wore off as other components wore out soon afterwards (door lock and then drum bearings). We replaced it, and the new one is much more economical to run and quieter.
    • CommentAuthorRex
    • CommentTimeOct 31st 2021
     
    Thanks for the comment and links. I sure one of the 12 x 6mm brushes would be OK when filed, but I have not bought a pair of what look like the same cassette type for only a couple of quid and now await delivery.

    The bit of wire the was left in the cassette looks like it was soldered to the top fitting rather than a sick contact.

    If it does not work, not a major financial loss so will look at replacing.
  2.  
    Posted By: Rexdoes the brass (or is it copper) disk at the end just make spring pressure contact with the fitting at the top of the part in my photo? Or would it be a soldered length of wire?

    The brass disk is fixed to the wire (soldered or spot welded) and it is the disk and wire that provides electrical conduction to the brush. The spring should play no part in the electrical connectivity, it is just there to provide the necessary pressure of the brush to the commutator.
    • CommentAuthorCWatters
    • CommentTimeNov 1st 2021 edited
     
    Perhaps ask this seller if it fits the 30/7. Its advertised for the 30/4 but they may use same motor.

    Has dimensions.

    https://www.ebay.co.uk/itm/304163294227?hash=item46d18b8c13:g:aR8AAOSwOgdYpByu

    quote

    Fits e.g. for vacuum cleaners with Domel motor 7778-5
    snip
    Parkside PNTS 30
    • CommentAuthorRex
    • CommentTimeDec 26th 2021 edited
     
    Just thought I would give a Boxing Day heads-up.

    After one failed delivery of the brushes from China, a fleaBay refund and trying again, the brushes finally arrived just before Christmas.

    Fitted them this afternoon, but of course, they would not fit. Took advice from above, removed the carbon and spring from the new housing, sanded it down to fit into the original housing, reassembled everything and the vac is working again.

    Brilliant result and many thanks for the advice.

    Happy New Year to all
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