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D5 pump rattling.

post #1 of 2
Thread Starter 
Last night, I finished building a system with the (dreaded? tongue.gif) Koolance RP-452X2 reservoir combo. I am using a single D5 vario and have combined both reservoirs using the acrylic bypass piece. While leak testing the system, the pump has been running the whole night on a decent enough laboratory psu (which I use for my studies).

As far as I can tell, water is moving and there is not any more air left in the loop. While the vibration noise is louder than I expected it to be, the rattling noise is rather unsettling. It sounds like the seeking noise of an old hard drive. The sound goes away if I use setting 1 or downvolt setting 2 to 10V. Going up in voltage and the sound returns.

While filling the loop, I made sure that there was enough water in the reservoir before turning the pump on. Although initially, the water was not running, I needed to tilt the case a few times to remove trapped air.

Could it be an slightly unbalanced impeller?

Thanks in advance.


Edit


Other system specs:

- Silverstone FT02 with Magicool 180x3 rad.
- Primochill Advanced LRT 3/8 5/8 with Monsoon compression fittings, rotaries and temp sensors.
- Asus Maximus VI Formula with stock block.
- Intel 4770k with EK Supremacy block.
- EVGA 780 Classified with EK full cover block and backplate.
- Distilled water with Primochill Liquid Utopia.
Edited by thmeky - 12/1/13 at 4:22am
post #2 of 2
If your pump is rattling chances are the impeller has been damaged. If you didn't prime your pump properly then it may have been damaged as you cannot run the D5 Laing pumps dry. If you did not fill the pump with water through one of your lines then you may have damaged it. Don't expect the pump to be able to suck water from the reservoir alone with an air gap between the reservoir tubing and pump. Otherwise you should hear bubbles as it takes a while for the impeller get rid of the bubbles even if you don't see anymore bubbles in your loop.

The impeller sits on a ceramic bearing and if you didn't prime it with water as pretty much the lubricant then it is probably damaged. If you're worried you should take the pump apart and check the impeller for damage. If the impeller is damaged then buy a new pump. There is no point in trying to replace the impeller as I have already tried to do that on one D5 pump. The cost of the impeller alone is equal to or greater than the price of a new pump.

Last thing, is the pump properly mounted? The vibration or noise could be from your computer case. I mounted my D5 sideways on my case and without proper rubber o-ring or rubber gasket the pump made the case vibrate. In order to get rid of the noise you need something to dampen it or mount it more securely somewhere else.
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Skylake Is Here!
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 6700K Batch #L535B021 4.7Ghz @ 1.296V GIGABYTE G1 Gaming GA-Z170X-Gaming 7 EVGA Geforce GTX 970 SSC ACX 2.0+ G.SKILL TridentZ 16GB DDR4 3000 
Hard DriveHard DriveHard DriveCooling
Samsung 950 Pro M.2 512GB  Crucial BX100 250 GB SanDisk SSDPlus 240 GB NZXT Kraken X61  
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Windows 8.1 & 10 Dell UltraSharp 2913WM 21:9 2560x1080 Ducky Shine 4, CODE WASD, Deck Legend, G710+ EVGA SuperNova G2 850W 
CaseMouseMouse PadAudio
Phanteks Enthoo Evolv ATX Mid-Tower Ducky Secret SteelSeries Fostex Purple Heart TH-X00 
Audio
AKG K553 Pro, Philips SHP9500, Superlux 668B, S... 
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