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Uncommon issue: Tubes popping off compression fittings

post #1 of 21
Thread Starter 
Hi there,

Just dropping a note about this issue. Assuming your tube specs and compression fittings are 100% correct, there's only a few reasons why this will happen.

MAIN REASON:

If your pump happens to stop working (break down OR loose power connection), the water in the block will heat up within seconds and it will look for the nearest and quickest way out. The weakest link is the tube-to-fittings part. The tubing will heat up, become soft and begin to slip from the compression, ultimately water will escape from there. If you touch the tube or block, it will be very hot, probably about 70-80c.

The only 2 ways to prevent a meltdown is either to go

1. minimum 2 pumps

and/or

2. Install a temp monitoring program to shut down the PC once any component goes >70c or so. This might help to prevent a leak.

Best
Wes
Edited by lwesley - 6/19/11 at 8:59pm
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post #2 of 21
I use AIDA64 (mentioned in another thread I replied to) to monitor all my temps. Allows me to set both alerts and actions (shutdown) on temps I set. I monitor all my CPU cores as well as GPU/Mem/Shader of my 3 6970's.
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post #3 of 21
It's pretty much impossible for any component to heat up water to 70-80c in the first place.

It takes 250w of energy to raise water by 1c. Reason being is a large amount of energy is required to break the hydrogen bonds between water molecules before it can raise the tempertute significantly. Hence why any large body of water can remain cold even in the most extreme heat conditions.

Anyways...your liquid delta shouldn't be more than 3c (or so)
post #4 of 21
Quote:
Originally Posted by heresy View Post
I use AIDA64 (mentioned in another thread I replied to) to monitor all my temps. Allows me to set both alerts and actions (shutdown) on temps I set. I monitor all my CPU cores as well as GPU/Mem/Shader of my 3 6970's.
OT, but by chance do you know if AIDA64 works without crashing punkbuster/battlefield bad company 2? I would like a program to monitor temps again, but CoreTemp and GPU-Z will cause a crash. Let me know if you have any thoughts on that if you could?

Quote:
Originally Posted by kiwiasian View Post
It's pretty much impossible for any component to heat up water to 70-80c in the first place.

It takes 250w of energy to raise water by 1c. Reason being is a large amount of energy is required to break the hydrogen bonds between water molecules before it can raise the tempertute significantly. Hence why any large body of water can remain cold even in the most extreme heat conditions.

Anyways...your liquid delta shouldn't be more than 3c (or so)
The OP's statement applies when the pump isn't working, and heats up the water (as well as the running components heating the water) with the water sitting stagnant. There is no delta with non-circulating water. That 250w of energy to raise water by 1c has to be applied to a volume. That number wasn't mentioned... Most soldering irons go up to about 40w, but the tip of them will boil a small drip of water no problem, but will not boil a kettle... So that statement is missing a volume of water.

I would imagine that the components of your system will not allow themselves to hit the boiling point, as they should have a max thermal level of ~100c or lower. You will get pressure buildup, and probably pop a tube before that, but I don't know what the expansion of water is at that temperature. Also, I imagine most watercoolers are enthusiasts, so they've got programs to monitor temps, but again that's probably most and certainly not all.
post #5 of 21
Install a Koolance pressure relief valve to prevent this.
     
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post #6 of 21
Quote:
Originally Posted by kiwiasian View Post
It takes 250w of energy to raise water by 1c.
Fortunately for everyone in the world with electric water heaters, stoves, etc., the world doesn't work like you say.

It depends on how much water is involved, and how much time.
250w is more than enough to raise the temperature of the amount of water in a WC system, especially at the heat source, to the levels stated in the OP.

I'm not sure what the metric conversions are, but, not accounting for losses, 250w can raise the temperature of 853.5 lbs of water 1ºF in an hour, or 14.225 lbs of water 1ºF in one minute, or .237 lbs of water 1ºF in 1 second.

It may take a few minutes, but with an Intel i7 CPU, that has the TM function enabled, throttling to keep the cores at around 95ºC, the water block and the water in it will get very hot.

When I was practicing for installing Indigo Extreme, I did some runs with my CPU at stock speed under load with my pumps turned off. The exterior of my water block got up around 65ºC after about 3-4 minutes, and was climbing, at which point I turned my pumps back on to cool things back down.
My Tygon tubing was getting very soft and pliable above 50ºC, so I can definitely understand what the OP is talking about.
Edited by Caleal - 6/19/11 at 10:38pm
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post #7 of 21
I tested my loop by disconnecting the pump. Temps shot immediately to 100* and hover for a few seconds before shutting down due to thermtrip. No leaks with worm drive clamps
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post #8 of 21
Thread Starter 
Quote:
Originally Posted by Dr.GumbyM.D. View Post
OT, but by chance do you know if AIDA64 works without crashing punkbuster/battlefield bad company 2? I would like a program to monitor temps again, but CoreTemp and GPU-Z will cause a crash. Let me know if you have any thoughts on that if you could?
I use Realtemp to check the temps. In the setup box there's a field where you can activate programs to do whatever you want in case it hits a certain temp. I am going to try using a Windows shutdown program for that.

Wes
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post #9 of 21
I have compression fittings. When using indigo xtreme TIM which becomes liquid around 70C, you turn the pump off, and load the cpu, have to heat the waterblock to about 70+C to make indigo metal turn liquid, so it will reflow. If the waterblock does not get that hot it will not reflow. I have done this 3x for 3 different indigo applications. And when water is not flowing, the waterblock will get to 70+C quickly, since no cooling at all is taking place since no flow. With water flowing, it would never get that hot, even with cpu 100C. Throttling keeps the cpu temps at 100C or below, and when thottling fails, thermatrip shutsdown the computer.

But no tubes pop off the compression fittings, nor would I expect them too.

I have pics on xtreme under rge with pump off, temps 100C under load...but site is down now, assuming they are still their with all their "cleaning".

And the Realtemp shutdown program works very well, I have set for both gpu and cpu temp to shutdown, can test by yanking molex pin from pump with cpu under load...works every time.
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post #10 of 21
My computer shuts down when the pump isn't working anyway. There's no monitoring apart from the CPU temp.
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