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    Hatsuwr replied to the thread Central vacuum.
    I'll post about it more here when I've made some progress on it, but I'm redoing the entire control circuit. I have an old CV350 that...
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    Hatsuwr reacted to vacerator's post in the thread Central vacuum with Like Like.
    Oh, doing that would require swapping out the control board. I wouldn't for two reasons. 1; Chinese made relay/control boards are more...
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    Hatsuwr replied to the thread Central vacuum.
    Do you have any examples of ones that use a soft start? I was planning on incorporating that into mine, and I'm curious how existing...
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    Hatsuwr replied to the thread Central vacuum.
    There are a great many videos you can find on YouTube. Here's the first one I came across, it is turned on at the very end: That's...
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    A non-subjective comparison between the motors would be pretty difficult without the old one working, but thankfully I am quite familiar...
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    There is an orifice diameter that will roughly match a system in any configuration you want - hose or not, cleaning head or not. There's...
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    Unfortunately all of that is still based on a misunderstanding of the performance charts. The ratings are not for unimpeded flow - they...
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    Thankfully Ametek is pretty transparent about their products. You go to their website, enter the model number into the search box, then...
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    Guessing it was an internal short that caused it. The motor had a few thousand hours on it, so a good life for a motor of its type and...
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    Hatsuwr replied to the thread CFM in isn't = cfm out?.
    Well, prove us wrong then. Eliminate those variables and add some consistency to your measurements and let's see the effects. Obviously...
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    My central vacuum's rotor burned out, and considering the cost of just a replacement rotor or a similar motor, it made sense to upgrade...
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    Hatsuwr replied to the thread CFM in isn't = cfm out?.
    You're still talking about 10%+ difference in cross section just from your orifice estimates. Add in the leaks mentioned earlier and...
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    Hatsuwr replied to the thread CFM in isn't = cfm out?.
    1/8" difference could explain a lot of what you are seeing, depending on which side is larger. I don't know how big those ports are, but...
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    Well if your armature is good and happens to be a 215330, I have a 7.2" motor (115334) that is only missing the armature that I'm giving...
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    You have the model number of the vacuum/motor? Any idea what the problem with the motor is?
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