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MCP35x EXPLODING!

post #1 of 64
Thread Starter 
I have 2 MCP35x on an EK dual top and I'm filling my loop as we speak. I fill it with water, turn the pump on, and it sucks it down, GREAT!

Now when I turn it on, it no longer sucks the water down. Instead, the water is moving around in the tube quite rapidly like an explosion. It is even going up and down the little air tube in the middle of the top. The pumps are also quite loud.

Does anyone know what is going on? I figured if the pump wasn't sucking water down, it at least wouldn't be exploding water all over the place. When I turn it off, it gives one big last explosion and water comes gargling out of the air tube in the middle!

Is there air in my tube or whatnot? I just don't want to keep running it if there is something wrong with the pumps. They're just so loud I don't want to ruin them if something is wrong so I don't want to keep running them.

Can somebody else?
post #2 of 64
Pictures would be great.

You need to keep filling water in when you turn it on. The loop has to be completely filled, and the pump doesn't like spinning without water.
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Aderlass
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post #3 of 64
Keep filling your setup probably there is not enough water currently. The noise will be gone once the air in the loop is gone.
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post #4 of 64
I believe filling/priming/bleeding loops is covered in the stickies...seems to be what is going on here.

BTW...anytime your pump isn't pushing water, it's pushing air...and that is very, very bad.
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post #5 of 64
Thread Starter 
I know I shouldn't be pushing air, but I don't know if it is.

Basically, the reservoir is filled to this height:





When I turn it on, it almost ALL gets sucked to the bottom, but I can't tell because its getting swooshed all around the place.

Here's what happens EXACTLY:

1) Fill reservoir with water.
2) Put top on.
3) Turn pump on.
4) Stand by with paper towels/every 15-30 seconds a little bit of water comes out of the tube in the top of the pump.
5) Let it run a little bit while sopping that up.
6) Turn pump off/water comes exploding like a geyser out of the top of the pump...it's like there's a pressure system or something.

That's pretty much it. I would let it run but the loud pumps are scaring me because I don't want to run air. I don't want to add more water because it explodes from time to time. When I let it run with the top off, it didn't really explode at all but that makes me more nervous in case it will.

I'm really scared here guys but once I get by this I'll be all done. Can someone please help?
post #6 of 64
For number #4 you seem to have a leak. Make sure you have everything hand tightened in there.

Keep putting in water whenever reservoir is getting empty.
Edited by Averwind - 2/16/11 at 12:43pm
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post #7 of 64
What I usually do, is I keep one end of my res plugged and detach the res inlet tube...I fill the res, and use the free tube like a straw and pull water through the loop, until it's mostly filled. Once this is done, I reconnect the res inlet, refill the rest and start priming/filling it like usual. The biggest area of focus should be your radiators, which often can collect decent size pockets of air, so tilting, etc is a must. If your res is feeding your pump inlet, make damned sure it doesn't go dry.

You'll need to cap your res when filling as your pump/flow will likely slosh water.

You need to perform these steps with a jumpered PSU as well.
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post #8 of 64
Thread Starter 
Quote:
Originally Posted by Averwind View Post
For number #4 you see to have a leak. Make sure you have everything hand tightened in there.

Keep putting in water whenever reservoir is getting empty.
There is nothing leaking inside of the case. I mean nothing else is wet. The only thing leaking is the reservoir out of the TOP so it's not really a leak I don't think.

I mean I could be wrong but nothing else is wet?
post #9 of 64
See my post above...
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post #10 of 64
Oh you mean there is water jumping out from the reservoir because of the water flowing into to res. That's understandable.

So you connected 2 MCP35x pumps in serial?
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