WC system not bleeding properly?

[thilanliyan]

I just changed cases to a NZXT Panzerbox so I had to redo the loop but for some reason I can't get it bled.

Loop order is:
Swiftech 120 QP-res (integrated res) radiator --> Swiftech MCP355 --> DTek Fuzion V1 -->Danger Den GTS 2x120 radiator --> DD Maze4 GPU block --> back to QP-res

I was using Primochill PC Ice fluid (slightly thicker consistency than water) but bleeding that was just not working at all...I even let it sit for a while to let the bubbles coalesce but that didn't work. I've switched now to just straight distilled water and it's not as bad but it still looks like it's foaming.

I'm pretty sure I don't have any leaks as I'm not seeing the system losing water. The dual rad is top mounted by the way...and I'm letting the system run at an angle so that any bubbles would float towards the barbs.

Any ideas?

EDIT: On the Fuzion V1, the outlet barb has to be above the inlet barb to aid in bleeding right? In the instructions it says to have the DTek badge right side up and this also results in the outlet barb at the top...I don't have the badge right side up but still have the outlet barb at the top so it should be okay right?
Here's a pic of the inside of the block:
http://i41.photobucket.com/alb...allenge/FuZionbase.jpg

Since it's all symmetrical as long as I have the outlet barb at the top it should be okay right?




EDIT:
FIXED!!
It seems the pump is so strong that if there's even a little gap between the top of the res and the water level, it sucks in the air in the gap and pushes all those bubbles through the system. I filled up the res right to the brim and now it's fine. I was able to replicate what I was seeing and hearing with a spare microres I had so that I could see what was happening. I've never had that problem before...I'm not sure why it's happening now.
Anyway, it's fixed.

 

[WoodButcher]

Originally posted by: thilanliyan
I'm pretty sure I don't have any leaks as I'm not seeing the system losing water. The dual rad is top mounted by the way...and I'm letting the system run at an angle so that any bubbles would float towards the barbs.

Those rads to be used as reservoir must be vertical, barbs at the bottom, the same position that it is in when you have the fill cap open. The blocks generally don't matter for bleeding, the orientation is for optimum cooling of the chip.

 

[thilanliyan]

No the dual rad is not the integrated res...the single rad has the integrated res and it's mounted vertically with the barbs at the bottom...which is why I'm wondering why it's so hard to bleed. It sounds like air bubbles are being sucked from the rad-res (mounted correctly) into the pump (hence the pump is very loud at the moment as well)...I don't know why the air bubbles are being sucked in by the pump (since they should just float to the top of the integrated res) but that's what it sounds like.

 

[WoodButcher]

Your single rad is mounted lower on the box than the dual? I think you need to run with the fill cap open to top off, or lower your dual rad while filling. My thought is the air in the dual is more than the single can hold w/o running dry. When you fill can you tip the box so that the dual rad fills? if you post a pic of your rig it would help myself and others to help you.

 

[aigomorla]

is the rad mounted horizontally with barbs pointed down?

That could be why u cant get it to bleed.

Do you have a Tline? or some other res inline?

Because u'll never get the air bubble out of a horizontal rad unless u have a res or tline somewhere.

 

[thilanliyan]

Here's a couple of pics:
http://i53.photobucket.com/alb.../thilan29/PA050089.jpg
http://i53.photobucket.com/alb.../thilan29/PA050088.jpg

The single is below the dual (which is top mounted). I've been running with the fill cap open and topped off but the bubbles just refuse to bleed. I also ran it at an extreme angle to help with bleeding but that didn't work either.

I have a 90 degree barb at the pump outlet...could that affect anything?

 

[thilanliyan]

Originally posted by: aigomorla
is the rad mounted horizontally with barbs pointed down?

That could be why u cant get it to bleed.

Do you have a Tline? or some other res inline?

Because u'll never get the air bubble out of a horizontal rad unless u have a res or tline somewhere.

Yeah I have the integrated res in the single rad. No Tline as I thought the integrated res-rad was sufficient. I had this thing set up the EXACT same way in my other case (minus the 90 degree barb at the pump outlet) and everything was fine (although even that time it took a while to bleed but it did eventually work fine)...I just can't get this one bled.

I think I'm gonna take it apart and see if there's anything wrong with the res-rad.

 

[aigomorla]

yeah u have bleeding problems..

Lemme see if i can illustrate the problem...

Since your top rad is horrizontal, and barb pointed down, you will get a constant air bubble trapped in the top portion of your rad.

Normally how i advise people to fix this is by tilting your case in a direction. Doesnt matter which direction, but a tilt is what is needed to push the air stuck in the top out though the other end.

Problem with your system tho is you have no place for the air to come out but back into your 120 QP res which u cant really fill or have access too.

You may need to disassemble your loop and add a Tline at the bottom, or add a res of some kind.

 

[thilanliyan]

Originally posted by: aigomorla
Problem with your system tho is you have no place for the air to come out but back into your 120 QP res which u cant really fill or have access too.

You may need to disassemble your loop and add a Tline at the bottom, or add a res of some kind.

What do you mean? I'm able to fill up the QP res just fine as I just unscrew it and tilt it outwards and fill. And if the bubbles are entering the QP-res shouldn't it be bleeding properly? When the system is running, I can see the pump sucking in bubbles from the QP-res which is odd isn't it since any air bubbles in the QP-res should just go to the top and bleed off? What does the interior of a QP res look like (how are the tubes and passages shaped inside the res)?

 

[thilanliyan]

FIXED

 

[aigomorla]

Ahhh good to hear you fixed it..