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Is my 100mm reservior too small?

post #1 of 12
Thread Starter 
I have a 100mm Reservoir http://www.frozencpu.com/products/11...?tl=g30c97s165 in a 1/2" ID 3/4 OD and am having issues with bubbles. I tried running the tubing from the block to the top of the res and out the bottom into the pump, but that caused a vortex. So, I flipped the res to the traditional style with tubing at the bottom for both in and out. This way however, I'm still getting bubbles int he loop and foam at the top of the res. I'm not sure if there is not enough room from the top of the fluid to the exit tubing, if its the pump being connected to the res that is causing this or if the res is just undersized for that tubing of this thickness.

The only options I can think of now are to adjust the flow of the pump (which I'd rather not do if it will affect temps in the future) or raise the res above the pump and add tubing between them instead of having it sit right on top of the pump with just a male to male fitting between them.

Here's what I'm working with.

I'm setting up a dual loop water cooling system for my Corsair 800D. The loop is for the video cards. Right now the loop is configured for the one card I have, but there are plans to add 2 more cards. The tubing is only running though the bottom half of the case, but as I said it is quite large. I upsized for the ease of matching fittings and the smaller radiator (2 fan config)
post #2 of 12
Your reservoir can never be too small, In theory, there is no need for a res.
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post #3 of 12
Quote:
Originally Posted by Theory View Post
Your reservoir can never be too small, In theory, there is no need for a res.
This.
post #4 of 12
Make sure res is above pump. Let it run with max off max off max off and shake the case and eventually it will all go out.
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post #5 of 12
Thread Starter 
Thanks nick, I'll give that a try and let it run overnight since I've already leak tested it for 24hrs.

Theory and Speed, I guess I phrased it wrong. The real question would be is that particular res causing problems with the loop and what the recommendations would be to remedy the issue, but that's not as eye catching lol.
post #6 of 12
Thread Starter 
well it doesn't seem like i can adjust the flow rate, the original top had tweek places, but the new one with the correct size fitting for my tubing does not. It's the XPC top. I'll leave it running over night and if the bubbles are still there, I'll try moving the res further from the pump. That is unless someone has a suggestion as to what I can do to fix the problem other than that or replacing the res altogether.
post #7 of 12
Quote:
Originally Posted by nightspyder View Post
well it doesn't seem like i can adjust the flow rate, the original top had tweek places, but the new one with the correct size fitting for my tubing does not. It's the XPC top. I'll leave it running over night and if the bubbles are still there, I'll try moving the res further from the pump. That is unless someone has a suggestion as to what I can do to fix the problem other than that or replacing the res altogether.
Honestly its a waste of money unless you dont like the look...
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post #8 of 12
Res is not needed nor need to be replaced nor needs to be moved. As long as it is higher then the pump, your fine. Left is the bubbles. Some get trapped in the pump, some in the blocks. To get them out, off on off on the pump (variable pump like mcp655 is best but fine with others). Shake it to get air out of the blocks. Hopefully you primed your pump before putting this all together...
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post #9 of 12
Quote:
Originally Posted by Nick911 View Post
....Hopefully you primed your pump ...
Erm... whats that ?
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post #10 of 12
Thread Starter 
Nick, yes I primed the system. (Vic, is when you make sure you keep adding fluid to the res so the pump doesn't run dry while your initializing it.)

It's not that I don't like the look. This is my first major loop build like this, but it's to my understanding that bubble = less efficient cooling.

After running the loop all night, the res level dropped to half and was sloshing the water at the top quite a bit again. I've added fluid which has seemed to stabilize things a bit in the res. I'll let it run like that for a couple hours while I'm gone, then come back and do the on/off cycles you recommended.
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