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Pump pressure in loop

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warcobra
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2018/01/13 14:52:45 (permalink)
Hi, I was wondering if anyone could help me out with my loop pressure. I have a purge valve at the top of my res because I think I am having hi pressure. So I have spent 2 days bleeding air from my system after some bad fluid and cleaning it up. So now that I have spent all that time bleeding it I feel like I have nothing but maybe some micro bubbles in the rads. My problem is when I turn my system on and the pumps spin up it drops the res about 20-25ml of fluid then when I shut it off it goes back up the exact same. Of course the valve is making some suction noises from the liquid going down then back up. Is the this normal? My setup is 4x 480mm by 45mm thick rads and a 240mm by 60mm rad. I have the system running with 2 D5 EK Revo pumps in series with a 140 X res. I am also using a auto purging primochill g1/4 valve on the res. Thanks in advance for help.

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http://www.heatware.com/eval.php?id=102641
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    the_Scarlet_one
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    Re: Pump pressure in loop 2018/01/13 15:16:37 (permalink)
    You probably have some air in your system somewhere that is compressing when you start up, and then releases pressure when you shut off.

    I would rock the loop constantly and try to break the bubbles up.

    Could you post a picture of your loop please?
    #2
    warcobra
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    Re: Pump pressure in loop 2018/01/13 15:28:06 (permalink)
    Sorry for the not so good pic but it's the best I can do at the moment. I don't know how there can be any air left in it with the amount of work I have done to remove it all. It is not easy to shake this thing around. It's about 100lb's

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    the_Scarlet_one
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    Re: Pump pressure in loop 2018/01/13 16:03:22 (permalink)
    Hmmm, for some reason I am not able to see your picture.  I have been trying to refresh and use different browsers as well as my phone, but still can not see it for some off reason.
    #4
    warcobra
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    Re: Pump pressure in loop 2018/01/13 16:20:50 (permalink)
    Humm strange. Give this a shot I uploaded it to PhotoBucket. http://i1064.photobucket....ay59j.jpg?t=1515802768
     
     
     

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    the_Scarlet_one
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    Re: Pump pressure in loop 2018/01/13 16:35:03 (permalink)
    That worked.  That is definitely a snug fit in there.  On your two bottom radiators, is the Inlet at the bottom and outlet at the top on each?  That would force air bubbles up.  If the inlet is at the top, you may be getting air in the two bottom rads.  I would gently tip the case on its side, and face the outward facing ports up (for the two bottom rads) and just make sure the two ports are the highest points, and check to make sure there is no air locked in there.  
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    warcobra
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    Re: Pump pressure in loop 2018/01/13 17:01:40 (permalink)
    yup both outlets are on the top. I also stood the case on its back as much as i could before the pump would lose fluid. the front and both sides. the only thing left is upside down but that cant happens for many reasons lol
     

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    wmmills
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    Re: Pump pressure in loop 2018/01/14 10:59:08 (permalink)
    Can you pull the bottom rads out and set them on maybe some cardboard boxes that would make them as tall as the top mounted rads?

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    bcavnaugh
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    Re: Pump pressure in loop 2018/01/14 11:25:00 (permalink)
    Have you looked at using this item?
    $5.59 Pressure Valve Part No.  VLV-VL002K

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    Cool GTX
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    Re: Pump pressure in loop 2018/01/14 12:48:20 (permalink)
    Mine systems are sealed - no "pressure valve"
     
    Rocking ona corner of the case in all directions can help -- put pump at Max RPM, let run 24 hours

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    warcobra
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    Re: Pump pressure in loop 2018/01/14 12:51:21 (permalink)
    As for pulling the rad's out I can but then there will be no way of putting them back in unless I give it a crazy amount of slack and that's just not good. With the Pressure Valve you linked I already have one that does that exact same thing, thanks though. Just a reminder I have sat the case almost all the way on it's back during me bleeding the air out so that all 4 480mm rads were at the same point during that moment and I did have a bunch of air running through when I was doing that originally. So I went back this morning and did every direction again and not a single bubble moving through the system no noise of air anywhere in my system and that is with 2 D5 pumps at 100%. I would think that if there was anything in there it would have worked it's self out by now. I am almost starting to think that this just might be a sort of normal occurrence with higher head pressure.

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    http://www.heatware.com/eval.php?id=102641
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    Cool GTX
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    Re: Pump pressure in loop 2018/01/14 13:05:04 (permalink)
    Nice case by the way my first X9 went back because of shipping damage - new one due on Monday
     
    I'd also tip far left and far right

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    warcobra
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    Re: Pump pressure in loop 2018/01/14 13:42:06 (permalink)
    Thanks. Yea I had a corsair 750D Airflow before this. Loved it but I wanted to have a horizontal motherboard layout. Also when I saw I could add a bit more radiator to it I got pretty excited. I have tipped it left ad right as far as I could with out running the pump dry.

    :5820k @4.5ghz 22c Idle 55c Load
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    http://www.heatware.com/eval.php?id=102641
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