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DDC Startup Problem - Page 2

post #11 of 18
Quote:
Originally Posted by Angrybutcher View Post
Unless they changed recently, swiftech warranties are void if you remove the top. Besides, the pump isn't dead, just a pain to get spinning lol


Sent from my iPhone using Tapatalk
If it doesn't have the warranty sticker...? Btw, did you confirm it's not something simple like the power plug?
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post #12 of 18
My swiftech came with a plastic warranty sticker that you can stick back and all my laing doesnt have a sticker at all.
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post #13 of 18
Thread Starter 
Both of my DDCs were not so fortunate. They had the tamper-proof sticker that reads VOID when you peel it off.
 
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post #14 of 18
Sure sounds like an over heating issue with pumps running in your loop and in the case. Martin has shown that these MCP355's and MCP35X pumps can hit 100C. The base of the pump needs air cooling. If you have an old chipset (NB) heat-sink around, thermal tape that to the bottom of the pump and allow air to pass through it.

DDC pumps have a really hard time mounted in drive bays by themselves. If used with a drive bay RES, things are better.

A DDC-1 (MCP350) runs cooler than the DDC-3.x (MCP355) series. If you flow rate for the loop is 1-1.5gpm with average restriction, then a DDC-1 will work in your loop too.
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post #15 of 18
Thread Starter 
Thanks for the post bmaverick. I do have one of these laying around. I think it was labeled a "twinkling vga cooler" or something. I wonder if I could mount that with thermal adhesive/tape. Then I would need to find a way to mount the assembly without putting strain on the tubing.

That said, the pump runs fine once it gets going. I have not yet loosened the top to see if that's the problem, nor have I done any of the steps in the other thread. Since I have a second 355 sitting in a box, I can use that to play with. To remove the impeller, do I just pull or is there another way? I seem to remember it being on what looked like a ball. No idea if I messed that one up and quite frankly didn't care since I had ordered a replacement anyway lol.
Edited by Angrybutcher - 8/23/11 at 2:30pm
 
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post #16 of 18
this will come handy if it's overheating ;
http://www.koolance.com/water-coolin...roduct_id=1058
or you can install small 60~80MM fan that blows on the base of your pump
    
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post #17 of 18
Thread Starter 
Thanks for the link Luke. I knew about the Koolance heatsink, but I'm not sold that this is a temperature issue. Temperature may have caused it, possibly a bearing problem, maybe the top is too tight, but I doubt it's overheating the instant I turn it on.
 
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post #18 of 18
Quote:
Originally Posted by Angrybutcher View Post
possibly a bearing problem, ...
The only time you would have a bearing problem is when the pump was run dry or under sever cavitation conditions. The center inside of the impeller has four plastic fingers that ride atop of the white ceramic ball. If the fingers get dry and hot, the plastic will self-fuse to the white ceramic ball or deform. One way to fix this if the damage isn't too sever is to use 3in1 oil. about two drops on the white ceramic ball, then place the impeller back on and rotate back-n-forth for 30 second by hand. Let the impeller then site for 20mins allowing the plactic fingers to soak in the oil. this will relubricate the plastic and buy another life for the pump. OR, just buy another impeller.
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