Loud Pump

[xIHexIx]

So I've assembled my water cooling loop, it's currently running beside me on a leak-test and it seems most of the air is out of it, as all the lines are flowing smoothly. However, the pump seems really loud. A lot of people want water cooling for silence, and most videos you can barely even hear the pump come on when filling the loop (Like http://www.youtube.com/watch?v=krgK2dcxJ5g'>this one about 16:12 in.) But my pump is much, much louder than that, mine sounds like the one http://www.youtube.com/watch?v=777JcqPVgLU'>here at about 4:04.

 

I'm using anhttp://www.frozencpu.com/products/13147/ex-pmp-131/Alphacool_VPP655_Variable_Speed_Pump_w_RPM_Monitoring_-_Single_Edition.html?id=CGZ7KI2G&mv_pc=277'>Alphacool VPP655 Variable Speed Pump that I got from frozencpu. Since there isn't motherboard power, will the pump get quieter when I can turn the RPMs down, is there something wrong with this pump, or are all pumps this loud and you just don't notice in most videos?

[Ghost]

The pump will get quieter when the loop is fully bled. (When there are absolutely no bubbles in the loop).

[xIHexIx]

Alrighty then. Couple other things:

 

Logically it seems that the fill port should stay open until the loop is fully bled that way the air has someplace to go. Is that advised, or should the fill port be closed off?

 

And I have been tilting the case and I have been toggling the power switch, are there additional ways I can work the bubbles out?

[Whaler_99]

What speed do you have the pump at? Above 3 can get a bit loud. As Ghost says, once you bleed out all the air, should be good. You can also screw in the fill port to allow you more angle to tip and move the case. When originall bleeding mine, I pretty much had it tipped on it side at some points, then put it back upright and open up the fill port, let out air, fill with extra coolant...

[xIHexIx]

It's a 3pin controller, so it's what ever is default since my motherboard isn't on. I'll tilt and turn it some more in just a few minutes, seems like some of the noise is starting to go away so far.

[xIHexIx]

...I pretty much had it tipped on it side at some points, then put it back upright and open up the fill port, let out air, fill with extra coolant...

Thanks for this,I tilted mine almost sideways both ways and then pulled the fill port plug and hit the switch and watched air bubbles flow out the top rad and the pump drain a bit more of the res. I hadn't tilted it nearly that extreme at all, just a little ways to the side at a time.

[Whaler_99]

Thanks for this,I tilted mine almost sideways both ways and then pulled the fill port plug and hit the switch and watched air bubbles flow out the top rad and the pump drain a bit more of the res. I hadn't tilted it nearly that extreme at all, just a little ways to the side at a time.

 

Also, tilt it while running, this will help force air out..

[airdeano]

Thanks for this,I tilted mine almost sideways both ways and then pulled the fill port plug and hit the switch and watched air bubbles flow out the top rad and the pump drain a bit more of the res. I hadn't tilted it nearly that extreme at all, just a little ways to the side at a time.

 

depending on tube routing and rad placement, you might have to get aggressive on

porting the air bubble from the larger items (radiators). usually on first fill, they tend

to only hold 70% volume before the air closes off the exit ports when horizontal. and

when the exit port is pointing downward, it has a bigger effect to prevent proper bleeding.

due to the buoyancy of air (likes to be on top) it has a harder time to push air downward

(which 90% of the rigs built do) into a reservoir.

i wouldn't be afraid to lay the case on its back, holding the res/pump above the

mobo/radiator level to allow air to travel up into the res/pump.

 

post a pic of rig build for routing/bleeding info..

 

airdeano

[xIHexIx]

Okay, I tiled it around in all directions til the point is was almost on it's sides, I did it with and without the stop fitting on the fill port, and I did it while running. It was near silent when I went to bed, and I don't even hear it this morning when I got up.I'm going to let in run as-is for a few more hours, but I have to register for classes this morning and I don't have another computer, so I'll pull out the graphics cards (Uncooled for now) just in case and wrap the cpu fittings and sit it so that I can still see any potential leak areas it finishes 24 hours.

[xIHexIx]

Airdeano, here is a picture of the loop I took while it as in progress, please ignore the horrible lighting, I had the windows opened for light to work in.

The water exits to the right behind the mobo tray, goes into a bottom radiator, travels to the top radiator, goes to the cpu, then comes back down to the inlet port on the pump top. The rads are both two 360s in the back, which I realize is over kill even when I add in my graphics cards later on, but wanted to be safe. I wasn't entirely sure about the upward push of going from bottom rad to top rad, but I figured that at some point, water had to go up somewhere. If you think I should change this around at all, let me know.

 

Edit: I'm getting idle temps at about 37 Celcius when my house is at about 25. Is that normal?

Edit 2: I'm an idiot, I didn't realize the variable speed is physically changed by the red switch on the bottom (Which I also paid no attention to until I saw a picture) and it isn't actually software controlled. The fan cable on it is just for monitoring.

[Inwards]

It's a 3pin controller, so it's what ever is default since my motherboard isn't on. I'll tilt and turn it some more in just a few minutes, seems like some of the noise is starting to go away so far.

 

If it's anything like my 3pin-controlled pump, it will be running at full speed until you power on your motherboard.  At which point, you should be able to configure it in your BIOS or using Fanspeed to run at the lowest RPM setting.  It will be practically silent at that point.

 

This freaked me out the first time, too.  Don't sweat it.

[xIHexIx]

It is whisper quiet now, thanks for the help everybody. The PSU is now the loudest part in the system lol...