No flow past radiator (maybe)?

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wizh

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Jul 11, 2012
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Hi,

I would like your insight as to why my loop isn't working out. Only a tiny stream of water is present after my second radiator, which you can see in the video linked beneath. This was with the D5 set at speed step 2. I then set it at 5, and everything is now filled up, but I'm afraid the water runs too slow? Could this be due to air, or rather some obstruction in the radiator?

The loop is as follows: Pump -> Fitting maddnes -> 240 radiator -> cpu -> 240 radiator -> gpu -> res/pump. I have no idea what is wrong.

Thanks a bunch in advance :)

http://www.youtube.com/watch?v=gaKNgtOLThg&feature=youtu.be
 
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Ubrales

Ubrales

Polypheme
Dec 3, 2009
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I looked at the video. There definitely is air in the system. Bleed the system and get rid of the air. Also, it would help greatly if you had some simple flow meter hooked up in the system in order to quantify the flow in mL/min or equivalent.

Also, look for any kinks and obstructions in the entire setup. If necessary, take all the parts off and blow them out using compressed air - by connected an air hose to it; not the canned compressed air.
 
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4Ryan6

4Ryan6

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Apr 14, 2002
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If that D5 is on setting 5 something is definitely wrong and causing restriction in the flow!

Did you flush the rad before putting it into service to clear any possible trash from it?

I always take mine outside the home and run water through it both ways to completely flush it, using home water pressure that way I know it flows properly and if it has any weakness or blockage, reversing the flow will usually clear it or reveal it!

Are any tubes partially crimped?

 
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wizh

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Jul 11, 2012
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Thanks for your replies.

I flushed both radiators. No kinks whatsoever. In that particular video the pump was on setting 2.5/5. At this time all the tubes are filled with water, with few, but huge bubbles - around 6 cm. Will I be fine when they go away? I'm gonna see what kind of temperatures I will get.

I suppose that the pump isn't the problem.
 
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Ubrales

Ubrales

Polypheme
Dec 3, 2009
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Shake it like "Etch-a-sketch"? Some music would help! :)

Good to see you buddy!
 
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Ubrales

Ubrales

Polypheme
Dec 3, 2009
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Proper flow is the rated output of the pump at the set level. Without a flow meter, go with temp readings which are directly co-related to flow and heat transfer.
 
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4Ryan6

4Ryan6

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Apr 14, 2002
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ROFL That's great! :lol:

 
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4Ryan6

4Ryan6

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Apr 14, 2002
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Agreed and he mentioned he was set at 2.5 of 5 for the D5 and that looked right for a 2.5 setting.

To wizh, always clear your air from the lines using the 5 setting of the D5 pump to force the air out fast, then once you know it's completely trapped air free, drop the run setting down to what you want to run it at.

 
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wizh

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Jul 11, 2012
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I simply can not get the HUGE air pockets out. Any other advice? I have been tilting the case, switching the pump on and off, and finally tapping and pinching the tubing like a madman for the past hours. I am getting pretty tired of this.

By tilting the case I got the air out of the radiators momentarily:

5ZrBBvI.jpgI


I'm desperate. Help is greatly appreciated.
 
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Ubrales

Ubrales

Polypheme
Dec 3, 2009
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The solution is kinda labor intensive. Take the rads out and fill them up with coolant. Cap one end using the plug that came with them. Then start re-installing. Another way to get the air out is to install a "bleed" port with a valve shut off.
 
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wizh

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Jul 11, 2012
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I have a drain from Bitspower mini valve installed: http://www.frozencpu.com/products/14595/ex-tub-1034/Bitspower_G14_Mini_Valve_-_Black_Sparkle_BP-MVV-BKBK.html?tl=g30c101s460&id=RH2GiJ8z

Is it something like this you mean? How would I use that?
 
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Ubrales

Ubrales

Polypheme
Dec 3, 2009
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Yes that looks like a high quality 1/4 turn ball type shut off valve. I would tee it into the system at the highest point or close to it in order to bleed the system of air. Similar to brakes bleeding on a car.
 
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