foaming shenannigans

pzr vr6

pzr vr6

pzr vr6

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5 Jan 2010
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892
im building 2pcs both with loops. i cannot work out how the hell to get rid of the foaming.
both seem to have the same issue, the inlet to the res has a tiny air gap to the water level (no straw to put it lower down) this creates bubbles which then find themselves getting to the outlet port, this shoves airt round the loop and makes it foam like mad.
1 loop has been running on an off for a week and its still exactly the same. the other is a new loop for a new pc and an hour in its just doign the same thing.
how the hell do you prevent foaming?
the existing 1 is using a front distro plate and the new 1 is a flt 80 ekwb box res
 
Slightly confused here, are you saying the inlet (on the res) is so close to the outlet that air bubbles aren't rising to the surface so are continuously being drawn through the loop.

I'm not sure I've ever had air generate foam in my loop before. Are you using a liquid other than distilled water (like an EK dyed liquid) and did you clean the components (including the new ones) before installing?
 
not sure about foaming but going off what Bacon said, my previous configuration was similar where my FLT120 was on its side, so technically the inlet port was directly above the outlet port, and that meant there was a huge bubble in between which i couldn't get rid of.

Again i couldn't do anything about this, unless i laid the rig flat on its side, or to where the FLT was sitting in its normal correct position, would the bubbles subside, but as soon as i put the rig back to normal, a huge bubble would reappear.

Don't have a picture but you can see it at the 9s mark
www.youtube.com

Lian Li O11 Mini with custom Floating GPU mount and watercooling

Custom hard line watercooling with a modified vertical GPU mount and front display panel. Video taken during the day therefore side panel removed to reduce g...
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Never had one foam though
 
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Pictures would probably be useful
Are you returning into the top of the reservoir?
And not using the tube that makes the returning coolant
Come in below the top level of the coolant?
If its returning with enough force
Then yeah that could send bubbles straight back
Into the pump outlet
 
Bacon? said:
Slightly confused here, are you saying the inlet (on the res) is so close to the outlet that air bubbles aren't rising to the surface so are continuously being drawn through the loop.

I'm not sure I've ever had air generate foam in my loop before. Are you using a liquid other than distilled water (like an EK dyed liquid) and did you clean the components (including the new ones) before installing?
Click to expand...
I think so yeh. It's better if I out input on filler port though.
How do I upload a vid here? I took the loop out of the case and propped it up just to work on it easier
 
Some diagrams / pictures would be useful, or a video (upload it to youtube and link it here). The issue is entirely (for the bubbles) going to be down to position of in vs out port.
 
Bacon? said:
Some diagrams / pictures would be useful, or a video (upload it to youtube and link it here). The issue is entirely (for the bubbles) going to be down to position of in vs out port.
Click to expand...
il upload the vid now, the positions is my point, the output seems to be drawing air straight from the input
 
Well that certainly is a lot of bubbles. Of the three connections you have plugged in, which one is your in, out and fill? (assuming one is just for filling).
 
Bacon? said:
Well that certainly is a lot of bubbles. Of the three connections you have plugged in, which one is your in, out and fill? (assuming one is just for filling).
Click to expand...
left in, middle out, right fill.
thats a lot better than it was when i used the actual fill port
 
So the way you have it rotated is part of the problem, as you want the out-port below the waterline and the in-port as far as above as possible. You also (while your filling) need a way for the air to escape and not just become pressurised in that small container.

It's easier with a large traditional resovoir because you can top the resovoir up to fill, and leave a cap on the top open so the air can escape without building up. Turning it on when its full, once empty turning off, refilling etc. As your resovoir is so small that might not be possible. You should rotate it 90 degrees anticlockwise & ensure the fill line is empty (seems full in that video?). Fill it with water (out-port on the bottom & in-port on the top) and then let it run, once its run empty you add more water but dont keep the line full as otherwise air wont be able to escape and will remain trapped in the loop.
 
the fill (right) port was left open, i just left the open tube on.
yeh i figured it was to do with the height but the manual states you can have it that way np
 
Some pumps run full speed
Until you have pwm control available
So may be you will be able to slow the pump down a bit

The pinched/kinked pipe may actually be having an effect though
Wide open pipe more flow
Pinched/smaller opening more pressure
Since you're forcing same volume of liquid through a smaller hole
 
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