Air constantly circulating.

pgi947 · 16 Jun 2012 at 22:20

HI all!

Just completely re-fitted my loop, only I think I may have screwed up somewhere but I can't tell where.

As it is I have a 1080 rad pinned to the side, 360 rad inside and atm just a cpu block in the loop, complete breakdown of loop order:

Note no res as large rad serves as res:

1080>T-line w/fillport>pump>CPU block>360>1080

The problem I'm having is the air seems to completely ignore the open fill port which should presumably let air bleed out and keeps pushing air around the system. I've rocked the case, pulsed the pump, have most of the air out but still I'm getting the odd air bubble floating around and its bugging me

The fill port (barb with hose on, replaced by a blanking cap once bled) is constantly the highest point in the loop but air still seems to bypass it.

Any hints or other things to try? its been bleeding a total of 3 hours so far...

Jokester · 16 Jun 2012 at 22:23

Turn your pump off every minute for a minute or two to let the air congregate in to bigger bubbles then pulse the pump to get them moving slowly.

If it's a D5 turn the flowrate right down.

pgi947 · 16 Jun 2012 at 22:27

Jokester said:
Turn your pump off every minute for a minute or two to let the air congregate in to bigger bubbles then pulse the pump to get them moving slowly.

If it's a D5 turn the flowrate right down.

ooo, now I have the D5 on the highest setting...the pump has been pulsed in intervals ranging from a few seconds to a few minutes. lowering the flow (now I think about it) sounds very logical as lower flow would give the air more chance to escape

pgi947 · 17 Jun 2012 at 12:05

Ok next problem...

I have my pump mounted in the bottom of my 800D, the only way to change speed is through the back of the case, if I'm at 5 do I need to turn anti-clockwise to reduce speed? as I'll be turning blind. Unless that bottom cover just unclips?

Jokester · 17 Jun 2012 at 12:08

Yeah it's anticlockwise.

pgi947 · 17 Jun 2012 at 15:30

I got to it

Reducing pump speed helped slightly, got a little more air out but then the pump was too low to pull the rest of the air through the loop. Turned the pump back up and the air is still circulating, bypassing the fill/bleed so I'm just going to stick some drinking straws down the fill line to hopefully draw the last of the air out.

pgi947 · 17 Jun 2012 at 19:39

THINK that is most of the air now out, still hear some bubbles rumbling through the radiator, but my temps seem to be fine under load.

Quick question! As I plan to put the GPU in the loop as soon as blocks are released, thus meaning I'll have to drain, re-fill, hang my self etc...would a better option be putting a small res on the t-line rather than just a blanking cap?

eddyr · 18 Jun 2012 at 09:13

The remaining air will work their way out in time, not worth the endless case tilting.
The res will help, in my first WC build I used a t-line and it was an ache in the ar*e to bleed. You will want the res in the loop rather than at the end of the t-line (if I've read right).

pgi947 · 18 Jun 2012 at 09:26

Yeah currently it's just an open tline with a length of hose hanging out, I'll have a good look at the ek multioption reservoir's tonight and mock up some pictures so I don't run into a 3 hour bleed again.

pgi947 · 18 Jun 2012 at 21:26

Still bubbling away atm

Here are my proposed res locations (outside of the case) can either fit a small cylinder directly above the rad or fit a large one along the roof. Can someone give me some pointers as to where I should have what fittings etc...atm the return line is on the right hand side of the radiator.

I moved the return line fitting to a 90 degree rather than vertical in the picture.