Noise issue

[SeventhOmen]

Greetings all.

 

A bit of history is due. I come from a solid watercooling background. My last system just had a pump quit and I decided to replace everything instead of just the pump (an Eheim 1048). Ill give the rest of this systems specs for a comparison below. A Chevrolet Chevette heater core moded to use 3/8 inch barb fittings with a DangerDen shroud and 120mm fan, A Swiftech MCW-6002 waterblock, a DangerDen dual 5-1/4 bay reservior, 3/8 inch tubing throughout, and the above mentioned pump. This systems DeltaT was +9 degrees C. This was with Arctic Silver Ceramique.

 

I recently installed a Naulitus 500. A wonderful product it is. However, after following the instructions to the letter, including the filling of the system, there is a rather annoying noise comming from it. There seems to be a (for the lack of a better description) "water trickling" sound comming from the external unit. It does disappear when I tilt, rock, or rotate the system, but it always returns. It seems to be comming from the reservior. I repeatedly checked the fluid level with the unit both on and off. The fluid level is correct per the instructions. Is this a common problem with the Nautilus or did I not get all the air out? My first impression is that the noise originates from the air cavity just beneath the fill cap. Any thoughts?

 

The Nautilus 500, in its 'out of the box' form, keeps my computer at a DeltaT of +10 degrees C. This is with Arctic Silver 5 that hasnt gone through all of its thermal setting. This is a very impressive system. The fan is no louder than my previous WC system. The maintenance is 100% easier! I was going to replace the waterblock with a Swiftech Apogee......with the current temps, I see no need to do so! If I had to rate the system on a scale of 1 to 10 Id have to give it an 8.5. The trickling water sound is a serious distraction to me. Help me cure this and elevate my rating to a prefect 10 as it really deserves!

 

Thank you in advance for your time and effort with this matter,

 

 

Omen

[JonKrmr]

My guess would be that you still have some air trapped in the system somewhere. Probably in the water pump itself (cavatation).

[boogieman]

I've noticed the trickling sound too. If you remove the cap on the resevoir you can see the fluid moving pretty fast. I tried adding a bit more water but the sound remains. For me it's not a big issue and it's not annoying but it's defineatly there. All the air is out of my system and it's been running fine for about 2-3 month's now so I've just left it go.

[KaptCrunch]

that is from the res not filled to the max will cause the tickling noise, (can't find adapter to fit res hole 1-1/16-14 thread) or have a friend that works in a machine shop to drill center of cap and thread to 1/8 npt, add 1/8 brass nipple extend the fill height an cap it off with 1/8 npt female plug.

[SeventhOmen]

boogieman,

 

You nailed it! That is exactly what Im seeing as well. The problem is that my choice of case and auxiliary cooling devices were chosen for silence. Now I have to deal with a leaky faucet sound. But.....

 

KaptCrunch,

 

 

You are on to something. I think I will make an add-on to fit the refill cap to displace the little bit of space left in the top of the reservior. If that doesnt work, I will mod the unit a bit and put a rheostadt in the circuit to slow the pump down just to the point that the noise either lessens or disappears, and the cooling does not get adversely affected.

 

On a side note, the refill cap is non-magnetic (at least for my system) which leads me to believe that it is made from brass with a nickle or chrome plating. I am off to Menards to find something that will fit on the bottom of the cap. I will keep the forum posted on my findings and progress in case anyone else needs a solution.

 

One more thing. I compared the Corsair pump specs to those of Swiftech's MCW-350. Check it out. There are some amazing similarities. I really love this Corsair system. Every time I look at it, I find more hidden greatness within it. The radiator upgrade from another thread is comming soon and I have already begun looking at cooling other devices to include in the loop. So much for keeping it simple......

 

 

Thanks for the input to all,

 

Omen

[ira-k]

If you are looking for a quiet res you might want to take a look at the Swiftech Micro-Res. I put one in my case so I could see the flow, but it is also nearly silent.The Swifty MCP350 and Corsair pump are the same,just rebranded 10W Laing DDC pumps.The MCP355 are the new 18W version,they flow about 420lph and have a 20ft head.I'll leave a picture of the micro-res installed not only is it quiet but you are also able to see your flow.

[Xenthalon]

I have that trickling sound too, but it doesn't annoy me as much as the pump noise. The pump is way way louder than the SilenX Fan I installed. Don't you guys have any problem with that? It's a rather high pitched sound, is there anything I can do about that?