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xspc ddc pump top, imperfection?

post #1 of 9
Thread Starter 
Hi. Recently bought a xspc ddc pump top. The acrylic one. The circular part that would house the impellar is not pefectly circular. It is more oval shaped and you can see clear cutting lines (instead of a smooth contour of a circle).

Should I return it? Will this affect performance/ reliability?


Im a little dissapointed. I would expect precision cuts on a product like this. Not some cheap cutting job that looks like a kindergartner did it.


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Edited by AliceInChains - 1/28/12 at 9:49pm
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post #2 of 9
Personally, I would return it. In the past, there have been a small number of XSPC tops not allowing the impeller to spin correctly. This causes premature pump failure. I only know of two like this and the XSPC top was the issue causing it. I actually own one.

Can you put the top onto the pump and visually see if there would be a problem of the top making contact to the impeller? Does the o-ring seat properly?
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post #3 of 9
Thread Starter 
Quote:
Originally Posted by bmaverick View Post

Personally, I would return it. In the past, there have been a small number of XSPC tops not allowing the impeller to spin correctly. This causes premature pump failure. I only know of two like this and the XSPC top was the issue causing it. I actually own one.

Can you put the top onto the pump and visually see if there would be a problem of the top making contact to the impeller? Does the o-ring seat properly?

I havent actually installed it yet. The pump is currently installed in my sig rig. My plans were to redo my loop replacing my micro res with this xspc restop. I was going to wait and see what kind of responses i got here before installing it or returning. I dont think the top would cause any problems with the impellars motion. It just looks like the circle was overcut on one side. Like they cut too far and may have taken too much out.

I will try and get pictures up tonight.
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post #4 of 9
Thread Starter 
pictures added to the original post
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post #5 of 9
It's not supposed to be a circle, it should be spiral in shape for optimum pump efficiency or an increasing radius from the cutting edge out to the exit port.
news_vol3_iss10_fig2a.gif
    
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post #6 of 9
^^Aye... turbine shape!

None of my tops are circles and most of the time they look like they will hit the impeller, but obviously do not.
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post #7 of 9
Quote:
Originally Posted by Martinm210 View Post

It's not supposed to be a circle, it should be spiral in shape for optimum pump efficiency or an increasing radius from the cutting edge out to the exit port.
news_vol3_iss10_fig2a.gif

Photo is of my Dual bay res from MountainDewcooled.
Not round.
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post #8 of 9
Thread Starter 
Ok, so this is normal then? This makes me feel better. I really wanted to get my loop changed out this weekend, and having to return this would delay my plans. Thanks guys!
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post #9 of 9
Yep, that's normal to not be perfectly circular, as long as the impeller doesn't hit anything it's fine.
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