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Old Nilfisk vacuum cleaner

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  • 12-07-2023 11:55pm
    #1
    Wearb
    Moderators, Home & Garden Moderators Posts: 6,281 Mod ✭✭✭✭


    Anyone know what this button on top of the cleaner is for? It pops up every now and then.

    20230712_164505~2.jpg


    Please follow site and charter rules. "Resistance is futile"



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    #2
    dohouch
    Registered Users Posts: 1,540 ✭✭✭dohouch


    Can't help you, I have one and would like to know 😉

    We're not suffering, only complaining 😞



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    #3
    byte
    Moderators, Regional North West Moderators Posts: 19,123 Mod ✭✭✭✭byte
    byte


    Is it possible to tell what model it is? I've never noticed it on any Nilfisk's I've seen before.

    It sounds like it could be a device that might pop when there's a blockage or bag is full, as a warning and also to have air going to the motor.



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    #4
    CoBo55
    Registered Users Posts: 9,137 ✭✭✭CoBo55


    You need to replace the big filter there isn't enough air passing through to keep the motor cool, that pops up to allow more air to flow.



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    #5
    SEPT 23 1989
    Registered Users Posts: 43,028 ✭✭✭✭SEPT 23 1989


    It’s the crop circle maker mode

    don’t press it



  • Options
    #6
    Wearb
    Moderators, Home & Garden Moderators Posts: 6,281 Mod ✭✭✭✭Wearb


    https://www.boards.ie/discussion/comment/120848374#Comment_120848374
    20230710_125818.jpg

    ..

    Screenshot_20230713_235744_Gallery.jpg

    The other side of that button... just below the blue power connector.

    Please follow site and charter rules. "Resistance is futile"



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    #7
    byte
    Moderators, Regional North West Moderators Posts: 19,123 Mod ✭✭✭✭byte
    byte


    Yeah, seems it's like I suggested, called a Thermovalve on an Australian site:

    https://vacuumdoctor.com.au/products/nilfisk-and-tellus-thermovalve-for-older-gsd-and-gmi-motors

    So it'd pop when the motor is getting hot from lack of airflow, be it from a blocked hose, or indeed a clogged filter as suggested by @CoBo55 above.

    Seems quite genius to protect the motor and not seen in any modern vacuums I've seen. Though I suppose they just have a thermal cut-out now, vacuum just stops.



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