D5 Pump Restriction/ Whine

C

coalminer071

New member
You guys might have more experience with this pump then I do.
At first it was fine. Running it on the 5th dial and having Koolance CTR-SPD12X2 Dual 12V pump controller set at 7 volts for about two weeks now.
However as you can faintly see in the clip, the flowmeter is barely spinning, and as i ramp up the V on the controller, theres a huge whine sound. Is my pump fine and flow meter is just restricting? or vice versa.
In the loop.
Tubes: primochill 3/8ID 1/2OD hardline tubing
Fittings: Primochill Rigid Ghost Fittings
Ek: EK D5 X-Top Pump Top w/ D5 Vario Pump
CPU block: XSPC Raystorm Intel
Radiator: Alphacool UT60 480mm
BItspower: Visual Flow meter
Res: 250m Dual Helix

Here a clip of it https://www.youtube.com/watch?v=xu1iZ1a2Eao
 
To me that sounds like the bearings are shot, I could be wrong as I not done much with watercooling, but it does really sound like the impellar inside there is going out of alignment which usually points to bearings gone or going.
 
Do you still have a warranty for that pump? For me it sounds like the impaler is out of balance, so this is what causing the noise. But I'm not sure.
 
Yeah that would be a good thing to do.
Anyway you can adjust speed of D5 without controller so I don't see a point to run it on the controller.
 
| raVen | said:
Than return it if you have warranty.
Click to expand...
I'd have to agree with this, and I'd never put a pump on that controller again just out of sheer paranoia. D5's are VERY hard to kill, and I'd be hesitant to do control it via voltage. Heck, I came across a guy on another forum who had actually SUBMERGED his D5 in a bucket, because he saw a Mountain Mods video about flushing rads that featured a submersible pump. :D He assumed the D5 was submersible, killed it, and then just let it dry out for a few days and it fired right back up. Those D5s are tough SOBs. :D
 
You could try to orient the pump so the dial faces the back of your case, and use 90 degree fitting to connect the tube.
 
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