Persistent air lock in radiator

dsaf

dsaf

dsaf

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Joined
29 Mar 2020
Posts
13
Hi,

First post so please go easy on me! ha.

I've got a custom rig which was built about 3 years ago by PC Specialists. Being a bit naive and honest, I didnt realise you had to service them periodically and thus this has never been done.

So, I set to work, new tubing, cleaned the GPU / CPU water blocks, cleaned the rest.. blew the dust out the of the radiators and now, for the past 2 weeks, im unable to get rid of a (I think it is) an airlock in the final rad.

I've left it running for 7 days (power jumper) and tilted, turned it upside down, shaken it, kicked it, set fire to it etc (last 2 I didnt do..) so now I turn to you guys for some help.

Is the radiator knackered? I've tried running it with the port open, very little comes out in terms of flow and the flow meter eventually grinds to a halt. When i power off, it rushes back the other way sending the flow meter in reverse for a split second, see video below.

Order:
RES > PUMP > GPU X2 > RAD > CPU > RAD > RES

The only thing i can think of, is to put the tube from the rad to the res into the top of the res and see if i can get the air out that way but not sure.

Any help would be appreciated.


Lew
 
What was it doing before you took it all apart?
You opened cpu block?
Put the jet plate back right way round?
Sure you got inlet and outlet correct way
Around on cpu block and pump?
 
Yes everything went in the same way around, took photos and layed it out as it should be (aircraft mechanic so well used to this!)
 
dsaf said:
Yes everything went in the same way around, took photos and layed it out as it should be (aircraft mechanic so well used to this!)
Click to expand...
Fair enough had to ask Simplest things first
Well done taking photos of it all sensible
Was there an issue before maintenance?
What rpm is the pump reporting?
 
I think if do the following.

Simple loop with just the pump and flow meter. See what happens.

If working, add a rad. If working, add a block and so on till you find the problem.
 
I've disconnected the rad to res pipe and added a loop into the top..


Was expecting more flow then this.

Pretty sure now.its the rad.. final check will be as above, will now put a pipe from the cup into the res..
 
So, I'm now back to the CPU, same flow rate... anyone have an indication if the flow should be better then the video above?
 
Confirmed it was the CPU block, for some reason I missed a chunk of gunk.

Thank you for your help everyone.

Lew
 
Glad you sorted it mate. probably didn't miss it, it probably got pushed out from somewhere else.

This is why I run only clear fluid, with annual maintenance I've never had any gunk whatsoever.
 
Glad you got it sorted. I have the same dual D5 in series pump setup as you. As a point for future reference, this is enough to power a lot of radiators and tubing at a very good flow rate. I have 2 x 480 (one top and bottom) and 360 (front) in my loop mounted in a super tower case with a monoblock and GPU block and at full speed the pumps will cause the water to churn in my EK reservoir with anti-cyclone installed. I have mine on reduced speed most of the time since full power simply isn't needed (controlled automatically by AQ6).

For easier maintenance I would recommend a clear fluid solution. If you want colour, try coloured tubing instead.
 
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