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Low flow and performance with Koolance RP-452X2 and 2x D5 in serie

post #1 of 2
Thread Starter 
Hello,

Recently I moved from the Alphacool Repack - Dual Laing D5 to the Koolance RP-452X2, Rev. 2 to get rid of the "Y" connector and get my pumps working in serie.

The issue is, I am getting horrible performance with this new reservoir, with the 180 degrees pipe, the acrylic insert and both parts of the reservoir together, as the instructions state.

What am I doing wrong?

I got better performance with the old reservoir and the Y connector, so I'm pretty sure something is wrong with the setup.

Any advice will be welcome.
post #2 of 2
With the reservoir windows facing you, the "see-saw" baffle should be in the right chamber and the solid insert in the left. Leave the U shaped pipe where it is (between P1 OUT to P2 IN).

The solid insert prevents the coolant from P2 IN from entering the left reservoir; the coolant is directed to pump2's volute area and out via P2 OUT.

In this configuration, bridging the 2 reservoirs is actually optional (it will run fine with the left reservoir empty).

Have you checked if both pumps are working? The D5s are so silent I've always had to test them disassembled just so I can see the rotor spinning.
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