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some concerns

post #1 of 4
Thread Starter 
Just set up my water cooling and I have it leak testing right now. But I do notice some air bubbles in my video card block that are just swirling around in the corner. How do I go about bleeding the system? Right now I have the reservoir cap off to try and help it but every now and then I here what sounds like more bubbles passing through my system. I've turned the pump off and let it sit for about 30min without any leaks forming but my reservoir fluid level goes up slightly every time I turn it off, is this normal?

My system has the EK Supreme HF, EK P67A-UD7 mother board block, EK 6870 video card block, EK 480 radiator, black ice SR1 single 140mm, EK 250 reservoir, and swiftech pump (non variable).

Set up is...EK480 is on top of the case and feeds the CPU, then it hits the SR1, then the NB then the VRM's, then to the video card, then to the reservoir which feeds the pump and back to the EK480...I plan on adding dual GTX580's and that's why I got the EK480 because I know they produce A LOT of heat. I'm running this in a 800D case.
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Behemoth
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post #2 of 4
Quote:
Originally Posted by VetteV12 View Post
Just set up my water cooling and I have it leak testing right now. But I do notice some air bubbles in my video card block that are just swirling around in the corner. How do I go about bleeding the system? Right now I have the reservoir cap off to try and help it but every now and then I here what sounds like more bubbles passing through my system. I've turned the pump off and let it sit for about 30min without any leaks forming but my reservoir fluid level goes up slightly every time I turn it off, is this normal?
Perfectly normal.

The best way to get those bubbles out it to tilt your case round with the pump running, make sure to cap the res first though! Otherwise turning your pump on and off can get them to move.

Don't worry about running it with the cap on, the air will make it's way into the res and displace some water, it does not need to escape the res altogether as there is no overall change in volume in the system (still the same amount of stuff in the same amount of space).

Biggest thing to pay attention to is your rads, they can be bad for holding air. Again, simply cap your res and tilt your case around. Remember that air wants to escape upwards (obviously) so try to tilt things to allow this to happen.

There will be small bubbles that sit in your loop for a few days, these are also normal and will generally work their way out over time.

The change in level is due to the air in the various bubbles compressing, and the tubes and rads expanding very slightly when the pump is turned on, this too is normal. You will find that, when you get all the air out, this change in level is imperceptible.
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post #3 of 4
Thread Starter 
Thanks alot man All the bubbles are out and it's running like a champ.

I do have another question though. When I put a heavy load on my video card or cpu the temp spikes super fast then level off and when I unload the component the temps drop super fast. Is this normal? I figured it work something like in a car and the fluid would gradually raise in temp instead of spike.
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post #4 of 4
Quote:
Originally Posted by VetteV12 View Post
I do have another question though. When I put a heavy load on my video card or cpu the temp spikes super fast then level off and when I unload the component the temps drop super fast. Is this normal? I figured it work something like in a car and the fluid would gradually raise in temp instead of spike.
That sounds about right too. Remember that the components will produce a lot more heat when they are loaded, so naturally they will get a lot hotter straight away. The water will then heat up slightly to it's stable load temperature and level off.

So yes, there will be a slow rise in temperature as the water heats up, but this is on top of a quick rise in temp due to the increased power output of the component.

Quick graph of it below:



Please note, this is an indication only and not to any kind of scale, also the diagonal lines should be more of an exponential curve than a straight line.
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Main
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CPUMotherboardGraphicsRAM
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Hard DriveHard DriveHard DriveCooling
Corsair Force 120 WD Blue 500GB WD Caviar Green 1TB XSPC RayStorm 
CoolingCoolingCoolingCooling
RX240 MCR 220 EK 7950 Copper Acetal  DDC-1T 
OSMonitorMonitorKeyboard
Windows 7 64-bit Dell U2311H Oculus Rift DK2 Ducky Shine 3 MX Brown 
PowerCaseMouseAudio
Corsair TX 750W CoolerMaster CM690 II G500 Klipsch ProMedia 2.1 
Audio
Asus Xonar DX 
CPUMotherboardRAMHard Drive
A10-6800K Gigabyte GA-F2A85XN-WIFI G Skill 1600 CAS9 Kingston SSD Now 60GB 
Hard DriveOptical DriveCoolingOS
WD Caviar Blue 1TB LG Slim Blu-Ray player Silverstone NT06-PRO  Widows 7 Home Premium 
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Silverstone Sfx Series ST45SF 450W Silverstone SG05 
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