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MCP655 really quiet?

post #1 of 13
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So I have been putting my new loop to the finish touches. But I left the loop for a few day's of leak testing. Now today, I came down to the room and my MCP655 pump is very very quiet? Is this a normal thing? It has always been so loud, is that cause of air in the loop? I feel like my pump is not pushing water through the loop but my temps are normal and the pump is spinning. This is the first time the pump has ever been this quiet.
League overkill
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League overkill
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post #2 of 13
I cant even hear mine mate, but if even has a tiny air bubble in it sounds like a brick in a washing machine(well not that bad but you get the picture)
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^3
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post #3 of 13
Hey, if it is pushing water through and the temperatures are normal then don't complain

Yes, it is likely that an air bubble which has been sitting in your pump has finally dislodged. The 655 should be very quiet, almost inaudible outside your case, so it sounds pretty normal.
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post #4 of 13
Mine is extremely quiet. When I was still bleeding air out, it was loud. Once the air got out it hums nicely.
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post #5 of 13
Mine is dead silent, untill air hits it. Even with my ear inches away, still silent.
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post #6 of 13
~ same noise as a 700 RPM fan less then 18db for sure. Yes you have to make sure no bubbles in the loop.
Ishimura
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post #7 of 13
After you get ALL the air out of the loop the pump will be near silent.
post #8 of 13
It is near silent, much more so than the MCP355.
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post #9 of 13
355 makes more noise than 655?
on what speed setting
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post #10 of 13
I have two of those pumps in my build no noise at all
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