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Pump is RIDICULOUSLY loud, been running for 2 straight days now (MCP655-B) - SOLVED!- - Page 2

post #11 of 39
Quote:
Originally Posted by antonr90 View Post

Quote:
Originally Posted by IIIIICRASHIIIII View Post

Are you positive ALL of the fittings, clamps, and hoses are secure? Are you also positively sure nothing is obstructing the lines going into or out of the pump?

All fittings/Clamps/Etc is secure (even though I don't see what this has to do with pump noise). And There are absolutely 0 kinks and obstructions.

Then you don't know water cooling. Any loose ends can draw air into the loop thus affecting the pump. I've run into this before on several occasions.

If everything is fine, as you say, then I would immediately assume it's the pump motor and RMA it.
Edited by IIIIICRASHIIIII - 12/7/11 at 10:04pm
     
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post #12 of 39
Thread Starter 
Everything is O-Ring tight, if something was loose, I would suspect a minor leak some where not only air being sucked it, which isn't the case... That being said I guess I'll just have to give it another couple of days and if the noise doesn't die down, ill have to RMA..
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post #13 of 39
Quote:
Originally Posted by antonr90 View Post

Everything is O-Ring tight, if something was loose, I would suspect a minor leak some where not only air being sucked it, which isn't the case... That being said I guess I'll just have to give it another couple of days and if the noise doesn't die down, ill have to RMA..

It is definitely possible for air to be sucked in without catching a single drop of liquid. As I said, I've run across this situation before.

Keep us updated and let us know how it pans out.
     
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post #14 of 39
I can tell you that if the pump ran to long with air trapped it can cause over heating an kill the impeller where it rides on the ceramic bearing. If this happens that little impeller costs close to a new pump. Take the top off the pump an see if the impeller is rubbing the wall of the casing. Hope its just air an not a killed bearing.
post #15 of 39
Thread Starter 
Quote:
Originally Posted by IIIIICRASHIIIII View Post

It is definitely possible for air to be sucked in without catching a single drop of liquid. As I said, I've run across this situation before.
Keep us updated and let us know how it pans out.


Will do, hopefully its just air bubbles :/ I've had them take a while to get out before.
Quote:
Originally Posted by Moparman View Post

I can tell you that if the pump ran to long with air trapped it can cause over heating an kill the impeller where it rides on the ceramic bearing. If this happens that little impeller costs close to a new pump. Take the top off the pump an see if the impeller is rubbing the wall of the casing. Hope its just air an not a killed bearing.

I hope so too.. It sounds like air bubbles.. I can hear them passing through still, every once in a while a big one will get stuck for a second and I'll hear the noise increase substantially and as it passes it gets slightly quieter.

I'll just give it a few days before I start taking things apart, or RMAing. Hopefully it's just air..


Edit: It almost seems as if the air bubbles are just being sucked right back into the loops before they get to dissipate in the reservoir.. idk though, guess I'll just give it a few days :|
Edited by antonr90 - 12/7/11 at 10:52pm
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post #16 of 39
Hate to be the bringer of bad news, but it looks like you have your coolant hose ran wrong. I cant tell from that video, but for some reason it looks like your pumping water from the res - pump - rad - blocks.

If this is the case, drain and dis-assemble the WHOLE system and re plumb to do this. RES - PUMP - BLOCK 1 - BLOCK 2 - RAD - RES (If single rad config)

I know this is hard to hear, but I cant tell how its plumbed from the video.

IF it however, is plumbed correctly. The pump is just loud as hell due to air bubbles and not enough feed. The pump is spinning so quick, its cavatating and not pushing its full amount of water. Run the pump at 25% and check flow back into the rad.

If the sound levels drop and that dripping sound or how I like to describe it the ripping sound, cavatation was the issue.

However, if all this fails, congrats. You burned your 1st pump, or it was DOA
post #17 of 39
what are you using for coolant. i tried dd fluid once and when it mixed with the small amount of water left in my loop leftover from flushing it, it created a ton of micro bubbles. it was so bad that it almost looked like foam when i turned the pump off. anyways, all those micro bubbles made a ton of noise. ended up having to flush the loop and use new fluid
    
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post #18 of 39
Thread Starter 
Quote:
Originally Posted by PeteJM View Post

Hate to be the bringer of bad news, but it looks like you have your coolant hose ran wrong. I cant tell from that video, but for some reason it looks like your pumping water from the res - pump - rad - blocks.
If this is the case, drain and dis-assemble the WHOLE system and re plumb to do this. RES - PUMP - BLOCK 1 - BLOCK 2 - RAD - RES (If single rad config)
I know this is hard to hear, but I cant tell how its plumbed from the video.
IF it however, is plumbed correctly. The pump is just loud as hell due to air bubbles and not enough feed. The pump is spinning so quick, its cavatating and not pushing its full amount of water. Run the pump at 25% and check flow back into the rad.
If the sound levels drop and that dripping sound or how I like to describe it the ripping sound, cavatation was the issue.
However, if all this fails, congrats. You burned your 1st pump, or it was DOA

The order is Res-Pump-360mm Rad-CPU-120mm Rad-2x GPU's-Res , First time I've ever heard of having to purposely go to a block after a the pump. Everywhere I've read has basically said loop order doesn't matter as far as the res is above the pump and pouring water into the inlet.

As far as running it at 25%, I wouldn't know how to go about that, considering this is a MCP655-B meaning the speed is not variable.

Knowing my luck I got a messed up pump on arrival.

I should of spent that extra 15 bucks and gotten the variable version : |
Quote:
Originally Posted by sli_shroom View Post

what are you using for coolant. i tried dd fluid once and when it mixed with the small amount of water left in my loop leftover from flushing it, it created a ton of micro bubbles. it was so bad that it almost looked like foam when i turned the pump off. anyways, all those micro bubbles made a ton of noise. ended up having to flush the loop and use new fluid

I used a fresh bottle of distilled water. I do have a ton of micro bubbles all over the res, but they settle instantly when the pump goes off.
Edited by antonr90 - 12/7/11 at 11:18pm
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post #19 of 39
Is the inlet of your res submerged and you are able to observe no bubbles coming out of it? I assume the outlet of the res leading to pump is submerged. its likely not a fitting as impellers don't produce as much vacuum as pressure. You'd see a leak.

If you have tilted the open side of the case toward you then rotate it on its back some any air in the pump will have gone up to the res. No air should be trapped in the pump at that point unless the res water is coming in so fast its churning any air pockets in the res and being sent down to the pump to chew on.

If you had some clear tube for testing it would be nice but other then that it could be the pump it self. I mean they do die. But after years unless abused.
post #20 of 39
Thread Starter 
Quote:
Originally Posted by DigitrevX View Post

Is the inlet of your res submerged and you are able to observe no bubbles coming out of it? I assume the outlet of the res leading to pump is submerged. its likely not a fitting as impellers don't produce as much vacuum as pressure. You'd see a leak.
If you have tilted the open side of the case toward you then rotate it on its back some any air in the pump will have gone up to the res. No air should be trapped in the pump at that point unless the res water is coming in so fast its churning any air pockets in the res and being sent down to the pump to chew on.
If you had some clear tube for testing it would be nice but other then that it could be the pump it self. I mean they do die. But after years unless abused.

Almost seem like this is the issue. It seems as if the air bubbles are flying back down into the inlet. I can tell by looking at the res that there is a ridiculous amount of pressure/pushing force. So many micro bubbles appear that the res is hard to see through, it seems as if the majority of the air bubbles that are coming up to the inlet of the reservoir just end up flying back down the outlet. I'm really not sure of any solution to this, especially since I don't have a variable speed pump.
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