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Noisy pump?

post #1 of 7
Thread Starter 
So I finally managed to put everything together and two loops are fully assembled. Today was filling and bleeding day (PICS LATER).

Loop 1: GTX360#1-->FuZion-->EK780i-->T-->D5-->GTX360#1

Loop 2: GTX360#2-->EK 8800 GTX#1-->EK 8800 GTX#2-->T-->D5-->GTX360#2

Both loops are filled with distilled water, 1 drop of dawn, 2 drops of algaecide.

The pump in loop 2 is making this "shhhhhhh" noise that gets louder at higher settings (3-5) and goes quiet at 1-2. I was thinking maybe some bubbles but it doesn't want to go any quieter and there aren't many bubbles moving in out of the T-line anymore, just a couple every 5-10 seconds minimum.

The pump in loop 1 is completely silent.

I know they're still bleeding but wondering why the noise only in one loop. Makes me think something is wrong with this loop.

Both loops have tiny standing bubbles that don't move (kinda stuck to the tube wall). And both pumps are cool and not getting hot even after running for 10 minutes straight so I guess there is flow.

It did take much more time to get loop 2 filled tho (I guess coz it's bigger and uses more tubing..).

Shall I worry or shall I just keep bleeding it for a few more days?
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post #2 of 7
If you're using a T line, then it can take up to a few days to fully bleed. I use a reservoir with my D5 vario and it only takes less than an hour to fully bleed, but until it's fully bled I hear the same sounds coming from it as you do. But as soon as it's bled, it's nearly silent, even at the 5 setting. So just wait a few more days to see if it quiets down.
post #3 of 7
A t-line takes longer to bleed...Try rocking your box around from front to back and side to side, if you can take your rad loose shake it up to get the air out of it...Tap on your lines to knock off the little bubbles..Air likes ot hide in your blocks to...

If your pump is making a noise I'd just run it at a lower setting till its bled, it should bleed a little faster on a lower setting anyway..The one pump that is noisy I would take loose and shake a little and see if you have some air trapped in it..It should be pretty quiet once its primed, the only noise I hear from mine that is not normal pump hum is when it not primed well, or still a lot of air in the lines...

I always leave my pump loose so I can shake it and get the air out when I first fill up a loop...
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post #4 of 7
That's why I side mount my D5 pump and use a large capacity res (3.2 liter). As long as the water level is above the dual inlet lines, the gravity feed
from the res allows it to fully bleed in under 20 minutes. If you power the pump on and off every five/ten minutes it helps bleed faster.

If the hissing sounds continues though, you might wanna pull the pump apart and check the rotor for foreign matter. Just make sure you
hold the rotor FIRM while lifting straight up, as it is magnetically seated.

*EDIT* Of course Ira types faster.
Edited by Dryadsoul - 6/11/08 at 1:06pm
  
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post #5 of 7
Thread Starter 
Thanks guys, yeah the noise is now gone. Totally silent. There are still some tiny bubbles hanging out there but I guess they'll be gone at some point.

Too bad when I connected the motherboard now this darn 780i is showing the FF error. Looks like I may have to re-seat everything which also means drain the loop.

I just hope I didn't burn anything while putting it together.
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post #6 of 7
Yea the D5s are a pita to bleed compared to other pumps from my experience. But the damn brute force of the thing makes up for that
post #7 of 7
Thats good, glad you got it going...T-lines are just a little slower to bleed, you can always turn your pump down to a 2 or 3 and it will bleed a little faster to...
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