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I'm on my third MCP355 pump in the past 6 months...What am I doing wrong?

post #1 of 13
Thread Starter 
As the title states, I just went through my third water pump in the past 6 months. Two in the last 2 months! I'm getting sick and tired of this. I'm debating going back to air. What am I doing wrong? I bleed the system by letting it run till the bubbles are gone and no noise remains from the water.

Do I need to oil it or something?

Thanks
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TheZ
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post #2 of 13
How are you setting up your loop sounds like your running the pump dry and kiling them.
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post #3 of 13
Thread Starter 
Quote:
Originally Posted by Bal3Wolf View Post
How are you setting up your loop sounds like your running the pump dry and kiling them.
This is how it's setup:

TheZ
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TheZ
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post #4 of 13
Did you clean out your radiator before you set everything up? You could have particles and crap from your radiator getting in the pump and causing it problems. Just an idea.
    
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post #5 of 13
oh you have a res top so you shouldnt be running it dry unless your installing it wrong.
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post #6 of 13
Thread Starter 
Quote:
Originally Posted by markag View Post
Did you clean out your radiator before you set everything up? You could have particles and crap from your radiator getting in the pump and causing it problems. Just an idea.
Yes, I cleaned out the crap before the initial install 6 months ago.
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TheZ
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post #7 of 13
The pump is running hot, over heats and then dies after a period of time. The pump needs some air to circulate around it. The pump bottom is the critical place needed for cooling.

Can you raise the pump onto a closed cell foam pad or with rubber grommets?
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post #8 of 13
Thread Starter 
Quote:
Originally Posted by bmaverick View Post
The pump is running hot, over heats and then dies after a period of time. The pump needs some air to circulate around it. The pump bottom is the critical place needed for cooling.

Can you raise the pump onto a closed cell foam pad or with rubber grommets?
I think you're right. That's a shame because I have the pump raised on exactly what you suggested, rubber grommets. The grommets have a large surface area so they may be accumulating heat. ****.
TheZ
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TheZ
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post #9 of 13
That res/top is awesome, but with awesome comes awesome heat, may think about building a little custom rig to have a fan pulling heat off the bottom of the thing, do you know what your flow rate is? That res/top combo in your loop may not have "enough" restriction to slow it down and its just spinning itself into an early grave. Other option is to use an in line resistor on the 12v service to slow the pump up rather than it running balls out all the time.
 
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post #10 of 13
thats weird ive had my 355 for.. atleast 2 years with that res top for half of its life. in the pic the psu is different from ur sig rig. i was ganna say maybe that antec psu is fluctuating or jacking up the motor? cause im outa ideas.
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