Question about Eureka 431A Optima Bagless Upright Vacuum

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My eureka optima upright bagless vaccum has VERY low suction using the floor part. the hose has excellent suction. i removed the little translucent door underneath and there were no blockages, i cleaned the brushroll thoroughly and that hasnt helped either. i know this probably isnt recommended but i turned it on to the floor setting with the brushroll off and stuck my fingers up the intake as far as i could, the suction was good further up but it just seems to stop down at the base. because i stuck my fingers up there from the bottom of the machine and could feel sufficient suction i'm not convinced that there is a blockage. help!!

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  • barnswallowv Mar 22, 2011

    yes, the plate seems to be on properly and i can't find any cracks at all.

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  • Master
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I will try and help here. Is the sole plate on the bottom of the vacuum complety on and there are no visible cracks along the seam where it meets the body? This is the usual cause for this. Onc you take of the plate to access the roller and brushes, if this is not put on correctl you will lose suction. Look for any other openenings that can cause a air leak.

Posted on Mar 20, 2011

  • Dcramer531
    Dcramer531 Mar 20, 2011

    http://www.eureka.com/service/manuals/75...
    here is a link to the service manual for this machine What I called the sole plate they call the base plate, but still the same .

  • Dcramer531
    Dcramer531 Mar 22, 2011

    On these vacuums, they are very simple so either the loss of suction is from a dirty filter, blockage or the base plate. Since your telling me that your getting good suction up in the top part of the base, then the loss has to be coming from a bad seal around the plate. There is simply nowhere else for the loss to come from. This vacuum has had a lot of revues and a lot of complaints for the loss of suction, most of these were attributed to the filter system and how little dust it actually takes to start seeing this issue. My guess on this is that there is a good air flow your feeling but the actuall suction volume is not sufficiant. There is a big difference in flow verses volume, good flow does not mean sufficiant suction volume. This vacuum perfoms suburbly when they are new but tend to lose suction from day one and it gradually decreases till we get were we are today. If you are confident that there are no obstructions and the base is on correctly and tight, then a new filter is what you will need to get this performing like it did when it was new. The filter is designed to be cleaned and reused but it must be at the end of its cleaning life.

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  • Master
  • 1,961 Answers

Hello!
There is an obstruction on the airflow.
You might consider looking at the translucent door again that you removed.
When you put it back again, did you try to examine closely that something may be blocking or jamming the door during the operation of the vacuum.
Try again what you did, when you turn on your unit and put your fingers inside it, but this time make sure the translucent door is put back in its place before turning the unit on. See if the door opens when the vacuum started to work.

Posted on Mar 11, 2011

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