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Please help me with pump noise issues!

post #1 of 4
Thread Starter 
So over the last month i put together my very first custom loop water cooling build. (some images in this post if interested Here )

This is the basic setup


However after the first few days of tweaking (and getting the air bubbles out i noticed that the pump, a Laing DDC 1 Plus, was pretty damn noisy with a constant buzzing. I could clearly hear it buzzing when sitting a meter from the case with my headphones on (with no sound playing)

I called up scan where i got the pump from and they agreed over the phone that the pump shouldn't be making anything near that amount of noise and said if i took it back they would test it and give me a replacement if they concluded something was wrong.
Roll on a week and the replacement is making almost as much noise! This pump is sounding like one of those little hand held fans buzzing away frown.gif

I have tried everything, like making sure all the air is out the system, checking under the pump for anything catching, Made sure the pump is de-coupled from the case which you can see in the picture, i even check for over-tightening the res top (EK-DDC X-RES 100). I did notice the impeller looked like it was a red base and blue top to the plastic, where as everywhere i look it is described as just blue, if that makes a difference.

Have i forgotten anything else i could check? or have i just been really unlucky to get 2 bad/imbalanced/noisy pumps in a row?
post #2 of 4
is your pump running full speed? these things aren't quiet in the slightest. my ddc pump is undervolted to keep the noise levels down. when going full 12v it's loud like the hand held fan like you described. yours is the 18w version whereas mine is the 10w so it's considerably louder by default.

if you have room, try hooking it up to a fan controller and lower the voltage that way, it's the setup in my current system and i'm running it at bare minimum startup voltage. not 100% silent, but a lot quieter than 12v.
Millennium
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Millennium
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post #3 of 4

You have tubing connected to the pump that's also touching the back of the case. Isolate that and it should remove some resonance. A 35X would give you the option of PWM control allowing slower speeds at low loading.

Black Noise
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i7 990X Asus Rampage III Extreme Asus GTX TITAN Asus GTX TITAN 
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Black Noise
(22 items)
 
  
CPUMotherboardGraphicsGraphics
i7 990X Asus Rampage III Extreme Asus GTX TITAN Asus GTX TITAN 
RAMHard DriveHard DriveHard Drive
24GB Corsair Dominator GT PC3-16000 SanDisk Ultra II Crucial M4 Seagate Momentus 2TB 
Hard DriveOptical DriveCoolingCooling
Seagate Momentus 2TB Sony Optiarc AD-7690H Slimline DVD-RW Blocks - EK Supremacy, 3 x EK FC-580GTX, EK FC-... Radiators - 2 x Black Ice SR1 480, 2 x Black Ic... 
CoolingCoolingCoolingOS
Pumps - Swiftech 35X2 x 2 & Heatsinks Reservoir - EK Multioption X2 400 Advanced Fans - 20 x Noiseblocker PL2 Windows 7 Pro 64-bit 
MonitorKeyboardPowerCase
NEC MultiSync LCD2690WUXi Enermax Aurora Seasonic Platinum 1000 Case Labs TH10 & Pedestal 
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post #4 of 4
Thread Starter 
I had the pump completely out the case not touching anything and it still made a racket.

In the end i took it back and got a EK-DDC 3.2 PWM and put the res i already had on it.

As suggested by sexpot lowering the speed helped immensely. I have a nice profile set in bios now for temperatures and speed so when im not playing any games i can hardly even hear its turned on. biggrin.gif
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