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Originally Posted by ProHandyman
If the noise you hear is from air, you should be able to see the bubbles in the pump "resevoir". Alternatively, your loop could be to restrictive, causing the pump to be fighting the pressure, or suction... or you have a noisey pump.
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I see only very small and few bubbles in the tank
Quote:
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Originally Posted by ProHandyman
Try running the pump with inlet and outlet hoses in a loop with just your rad and cpu block to see if it is as noisey. Does your rad have a bleed screw on it? That would help some.
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The other DDC+ pump handeled the loop just fine, before it failed that is...
The flowrate is impressivley good, have not measured it but there is allot of water going through the system, so I do not think it is too restrictive...
I'll think about installing a bleed screw on the radiator...