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Water doesn't pump through the system - what's wrong? - Page 3

post #21 of 25
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Quote:
Originally Posted by Electrocutor View Post

Is there a reason your second video card is not water cooled?
The second card is my old GTX 275 and it's only used to output to my 2nd monitor and my TV, it's never used for gaming or anything like that.
I know I could use something different for my purposes, but I already have the old card and decided to use it in that way rather than getting rid of it.
No, it's not the most elegant solution and I could probably do something different.
But it doesn't need to be water cooled though.


Perhaps the next time I mess with it, I could change the orientation of the reservoir so that the tube from the GPU is going to the bottom instead.
Thanks for your help!
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post #22 of 25
Quote:
Originally Posted by The_Juggler View Post

Sorry for the late response, I've been kind of busy in addition to tinkering with a water cooling system.

The short story is - it's working now, largely thanks to the help I've received here.
Thanks everybody!

However, I do have some follow up stuff.
I tested the pump by its self in a small closed look and it seems to be working ok, air bubbles mess it up really bad and make it stop spinning though.
As soon as that air escapes, it runs better.
It's connected by a 4-pin molex.
It also has a 3-pin connection that can plug straight into the motherboard, but I don't have that plugged in.
Is there a difference? Is one or the other preferred?



It is still quite difficult to fill the system, have to tilt it all around to get water started through all the tubes or else the pump won't work very well.
Here is a picture of what I currently have:





At this point, I just have a really hard time filling the system.
I guess that's not a huge deal so long as I can get it to work at all, but I wanted this to be more convenient.
The fill lines and drain lines work ok, I just need to have water in all the tubes before the pump will work very well.

Is there anything I'm still doing wrong?
Are there any ways this can be improved?

I had a similar problem on a recent build. I resolved it simply by gently rocking the case from side to side (both east/west and north/south). As soon as I started doing that the water flowed normally.

Why do you have a fill line going outside of your case? It doesn't seem necessary. If you are having trouble accessing the top of the res (doesn't look like you do), then just install a 90 degree barb fitting on a t-line when you need to fill it. When you're not filling just plug the hole in the t-line where the barb used to be. This will give somewhere for air to escape too when you're filling.
Edited by zeusthunder369 - 2/12/13 at 4:44pm
post #23 of 25
I'm sure you probably have it right, but make sure the pump inlet and outlet are the right way around.
post #24 of 25
My loop is somewhat similar to yours as I have my pump at the bottom radiator on top and my reservoir is low as well. As people have said several times water in air out. That is why it is hard to fill. I had the same problem filling mine and I had to blow on the fill line every little bit of water I added.

The only way to easily fill the system is like someone else said is to have an air bleed at the very top of the system. Basically what that means for you is you would have to remount your reservoir outside of the case and higher than the radiator to fill it the way you are doing now. Obviously you don't want to have to do that so the other option is to fill the reservoir turn on the pump then turn it off and add more water rinse repeat. With such a big reservoir though you could just keep adding water to the fill tube as the reservoir level went down. One other thing is that with the 90 on the fill line it could make it difficult for air to escape up the fill line tube. What this really means is don't poor too much into the fill line at once while it is running. You want to keep it so that air is escaping through the fill line as your are filling it.

As far as the air in water out it is just like a gas can. For it to flow quickly you have to open up the air hole. Some newer gas cans that don't have the air bleed hole have a smaller tube inside the large filling spout that allows it to suck in air while it is pouring.
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post #25 of 25
Quote:
Originally Posted by Karnor00 View Post

I'm sure you probably have it right, but make sure the pump inlet and outlet are the right way around.

they are
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