Water cooling - Levels raises during night, and overflows the res.

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crc-eRror

Commendable
Nov 29, 2016
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I have recently installed a water cooling setup, which runs just fine.

The res. is the highest point in the case, and connected to the radiator, then pump, then GPU, then CPU, and back to res.

I topped of the res. after I felt sure that all trapped air was out of the system.

But then - and I cannot understand this.. Every morning, the res. has run over (due to small breather-holes). And there is air bubbles in the system. There are no leaks otherwise.

So - at first sight. It looks like water has been added, which cannot be true.. And how can there be airbubbles in the system when there are no leaks???

I'm totally at a loss here..

/crc

 
Solution
rubix_1011
Yeah, sounds like air is still in the loop, likely the radiator. Strange though, that there are breather holes in the reservoir...this would also allow for evaporation, which you would not want. This would also mean that it would allow for water to 'settle' due to gravity if the reservoir is not at the highest point in the loop and is allowing equalization of the water in the loop.

What reservoir did you buy? Can you link to it?
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n0ns3ns3

n0ns3ns3

Illustrious
May 25, 2016
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depending on your loop layout and components like rads and pump, it could take few days (and sometimes weeks) to get the air out of the loop.
here are few things:
1. connect res directly to pump intake - pump should never run without liquid.
2. after filling the loop and making sure i got all air out, i'm usually running stress test for about 30 minutes with fans off to raise the temperature of coolant and then just seal the loop - no breathing.
temperature (ambient) fluctuation can cause the loop to exapnd/shrink. since your loop is not sealed, liquid can be pushed out and then the volume will be filled with air.
 
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rubix_1011

rubix_1011

Contributing Writer
Moderator
Jan 12, 2007
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Yeah, sounds like air is still in the loop, likely the radiator. Strange though, that there are breather holes in the reservoir...this would also allow for evaporation, which you would not want. This would also mean that it would allow for water to 'settle' due to gravity if the reservoir is not at the highest point in the loop and is allowing equalization of the water in the loop.

What reservoir did you buy? Can you link to it?
 
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Solution
C

crc-eRror

Commendable
Nov 29, 2016
2
0
1,510
There is no easy way to connect the pump-inlet directly to the reservoir. But I like the idea of running the setup good and warm, and fully closed.

So I'll try to plug the breatherholes, swing the case around a lot, run the temp. up. Then top it of with coolant, and screw the top of the reservoir tight.
 
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