Bleeding Loop

[ragedev]

Hi,

 

I just received a new reservoir/pump and swapped out my old one for this. I need some help with bleeding the loop as my temps are not as low as I would like. My old loop had quite a lot of air bubbles after taking it out.

 

Currently to bleed the loop, I am running the pump (D5) at the highest setting with the fill port open. I have shaken the case around a bit and tapped the tubes to rid the air bubbles.

 

One thing I have noticed is that the water turns cloudy when run at high pump speeds and a layer of foam sits on the top. Do I need to use a different coolant?

 

My idle temps are still quite high (40C) and around the same temps as my old loop with a 750 Pump. So what is the best way to bleed a loop like this? Turning the dial from level 1 to 5 seems to make the air move as I can hear it doing so.

 

(Don't worry about the res resting on the GPU. Its only temporary and the PCIE cables pull the card back up)

 

 

[Syntaxvgm]

Coolant? The hell are you using? By coolant I'm hoping it's just water with biocides and other additives? 

If not, drain, wash (send a ton of distilled water through it via open loop over a sink or something), and add distilled water and a biocide if needed. 

If after bleeding you still have micro bubbles, a small drop of soap will help. No joke. 

[ragedev]

But when the system is off, the liquid settles back.

I'm using EK premixed coolant

[Maxwit44]

Sorry this may sound a little stupid, but, fill that res up a bit more. at least half to 3/4 full. Once that pump is running it could be sucking a very small amount of air.

 

Once the system has bleed all the air out of the system, that foaming will disappear.

[Syntaxvgm]

Sorry this may sound a little stupid, but, fill that res up a bit more. at least half to 3/4 full. Once that pump is running it could be sucking a very small amount of air.

 

Once the system has bleed all the air out of the system, that foaming will disappear.

Actually, yah. Me criticizing use of coolant aside, that could help. 

[cooperred]

Does the foaming still happen when you turn it down to 1? That sounds like plain cavitation.

 

As for bleeding, add a bit more coolant then try again

[ragedev]

Does the foaming still happen when you turn it down to 1? That sounds like plain cavitation.

 

As for bleeding, add a bit more coolant then try again

It does not happen at 1, only when i turn it up to around 4-5

[PuNkPoEtS]

@RageDev

 

 

dont worry about the idle temps as they will be the just above your ambient. what are your load temps?

[13CA350]

I'd recommend running it on a medium speed overnight with the top of the res open

[ragedev]

@RageDev

 

 

dont worry about the idle temps as they will be the just above your ambient. what are your load temps?

My ambient temp is 23C whilst the idle temp is around 36-40C. Load temps are around 67C whilst gaming and video editing. The liquid no longer gets foamy, Either I have bled all the air out or it did something when I added slightly more liquid to it.

[MontBlanco]

The cloudy water also happened to me when i first turn on the loop after assembling it. It could be the glycol that create the bubbles. After a day or so it's gone so nothing to worry about.