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post #21 of 32 (permalink) Old 06-11-2010, 12:09 PM
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Quote:
Originally Posted by Sider View Post
The DDC's have a couple spots on the bottom that get really hot if they don't have decent airflow going across them. The fact that you affixed the pad to the bottom just further insulated it causing it to get even hotter.
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Originally Posted by corky dorkelson View Post
I really think that the res was restricting the flow enough to have the pump heat up too much.

We will see.
I say it's a combination of these two factors. I've seen someone attach a small fan to the base of the 355 to alleviate some of the heat (it was on a UN mount). Even a 655 needs some air flow to cool it off.
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post #22 of 32 (permalink) Old 06-11-2010, 12:38 PM - Thread Starter
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3-4 months

i had the pad stuck to the bottom of the pump to make it stick so it wont move. i touched the pump and its getting warmer on the run, i wouldnt think its a prblem. last night it started to smoke. i opened the side panel two weeks ago, no air on that part.
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post #23 of 32 (permalink) Old 06-11-2010, 02:56 PM
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Originally Posted by prznar1 View Post
what is this? is it a cap? remove it or your next pump will die to.
That "cap" is probably the Bitspower Anti-cyclone fitting. It has 3 outlets on the inner "side."

Just FYI.

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post #24 of 32 (permalink) Old 06-11-2010, 03:04 PM
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Quote:
Originally Posted by ExSanguin8or View Post
That "cap" is probably the Bitspower Anti-cyclone fitting. It has 3 outlets on the inner "side."

Just FYI.
That's still way to restrictive for my taste.

imo, that probably helped a bit.

Sad to see that happen to you , but hopefully the MCP655 will do good for you.

Love mine with the Bitspower top.

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post #25 of 32 (permalink) Old 06-11-2010, 03:19 PM
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Can you take the pump apart and take pictures of where the heat/burning was coming from ?

Here is a Bitspower Anti-cyclone fitting, looks restrictive, but not enough to cause this IMO.
I would be much happier if it had 6 holes in it.



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post #26 of 32 (permalink) Old 06-11-2010, 03:43 PM
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maybe it didn't burn maybe it went dry or over heated.. but wow never knew that could happen in that configuration >.<
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post #27 of 32 (permalink) Old 06-11-2010, 08:15 PM - Thread Starter
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i don;t know, when i took it out, theres water in the pump. ill take pic in a mins.
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post #28 of 32 (permalink) Old 06-11-2010, 08:53 PM - Thread Starter
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post #29 of 32 (permalink) Old 06-11-2010, 10:04 PM
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That looks like it was the control for the pump itself. The motor used in them(so that the coolant stays separate from the power) is a 3 phase DC controller. Looks like it overheated from not having enough airflow. I've seen the same thing on RC 3 phase DC speed controls. The only solution I can see would be to mount it up a little higher and make sure to have some airflow around it. The part that actually burned are the FETs that are used to control the power pulses to the motor windings(you can see it in when looking at the first and second pictures.

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post #30 of 32 (permalink) Old 06-11-2010, 10:13 PM - Thread Starter
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thanks for the info. can i rma the pump? anybody here experience rmaing these type of product?
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