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What is this crud in my res?

post #1 of 22
Thread Starter 
I've had a slow leak in my loop for awhile that I couldn't track down. Because of the leak, my res would usually have empty space at the top unless I'd just filled it. A little while ago, I noticed a little bit of a film starting to form above the waterline in my FrozenQ res. Today, I finally tracked down the leak (loose barb on the res), so I drained the loop to fix the leak and clean the crap off my res. When I got the res out, the problem was worse than I realized. There was this crusty, flaky, blue residue in several spots all over the inside of the res, on the helix, even inside the end cap - pretty much anywhere that was usually above water. It was hell to get off, too. I ended up scraping most of it off with my fingernails because no amount of scrubbing with anything else worked.

I don't want to have to do all that again, so my question is: what is this stuff and what should I do to keep it from forming? I have never used any dyes or anything in my loop; all distilled water + killcoil from day 1. The water was perfectly clear when I drained it & it didn't smell like anything was growing.

Loop components:
Swiftech MCP655 pump
Swiftech MCR320-QP rad
XSPC Rasa CPU block
Swiftech MCW80 GPU block
FrozenQ Liquid Fusion res
Bitspower black sparkle barbs
Danger Den delrin fillport
Distilled water & killcoil

Sadly I didn't take a pic of the res before I cleaned, but here is what flaked off:

398

Thanks in advance guys. cool.gif
     
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post #2 of 22
Looks like candle resin, but its probably what they call flux, which is radiator residue from manufacturing. Could be from tubing, but that color doenst match an tubing ive seen
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post #3 of 22
Oxidation flaked from interiors of radiator?
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post #4 of 22
Quote:
Originally Posted by DirectOverkill View Post

Oxidation flaked from interiors of radiator?

I don't think so, oxidation doent come off like that, is adheres itself like a thin powder
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post #5 of 22
Did you use vinegar to flush out the rad? That's the sort of deposit that forms in rads if the vinegar (acid) isn't washed out thoroughly.
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post #6 of 22
crud
post #7 of 22
that is c4 bro
post #8 of 22
Thread Starter 
I did rinse out the rad with vinegar when I first got it. The loop has been running for over a year now, so I think any flux should have come out a long time ago.

The tubing is UV black - either Primochill or Feser, I've forgotten. It does have a sort of purplish tint, but why would it come off and stick to the res?
     
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post #9 of 22
More than likely that is from the radiator. It can takes a lot of work to get a radiator clean. I ran hot tap water through my radiator for 10 minutes plus 3 soak + shake + rinse w/ boiling water. Even on the 3rd rinse I was still getting crap like that out of my radiator.
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post #10 of 22
REally? boiling water?! is it safe to use that in the radiator? I mean It gets really hot really fast.

I just used some distilled flowing in it, and some shakes with it hot.

Oh and if its like that in the res, should be a lot worse in the block, open it up. Also maybe pump
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