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What happens when water pump dies? Will pc auto shutdown? - Page 2

post #11 of 20
Pumps can die, and sometimes they can die without warning.
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post #12 of 20

post #13 of 20
The water is unlikely to boil in your block. Even without the pump running there will be some water movement from convection which will supply enough circulation to keep the water under 100°C. Also the amount of time needed to heat the water to boiling point is greater than the amount of time that your CPU will be able to run at that temperature.

What will most likely happen is that your computer will run hot, throttle and, depending on your loop, either sit there for a while (if you have reasonable convection flow) until it BSODs or hit thermal shutdown.

The only real problem might actually occur in your tubing; it is possible for the water to get hot enough to soften the tubing to the point where it can slip off fittings, or even melt a small hole in the tube if there is an area under stress. Hopefully you will have hit thermal shutdown / BSOD before this point though.

I wrote an alarm using Rainmeter which monitors the pump's RPM signal. If this drops below 100 (arbitrary value) it sounds an audible alarm for 30s and then shuts down the computer. On restart there will be a note on the desktop with the time, date and reason for shutdown (pump failure). If you did not have a pump RPM wire then it would be possible to do the same thing with a CPU temperature; for example anything over 90°C sounds the alarm and shuts down the computer.
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post #14 of 20
Quote:
Originally Posted by Blameless View Post
The water won't ever get to 100C, so it won't ever boil (unless you are in a very high altitude environment).
Altitude doesn't really affect the boiling point in a closed system.
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post #15 of 20
Quote:
Originally Posted by Caleal View Post
Altitude doesn't really affect the boiling point in a closed system.
Is it completely sealed though? 110% airtight?

What's water tight won't necessarily mean it's airtight. And in saying so that means altitude should still play a role.
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post #16 of 20
Quote:
Originally Posted by blackbalt89 View Post
Is it completely sealed though? 110% airtight?

What's water tight won't necessarily mean it's airtight. And in saying so that means altitude should still play a role.
Other than the loop should be air tight enough if you are at 5000ft above sea level the boiling point of pure H20 is still 95°C and if you are running additives it's most likely going to be higher.
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post #17 of 20
My Bios doesnt have an option for auto shutdown in case a certain temperature is reached. Is there a program that I can download that will do this for me? Something like coretemp but that runs in the background?
post #18 of 20
Quote:
Originally Posted by spitty13 View Post
Is there a program that I can download that will do this for me? Something like coretemp but that runs in the background?
Yes, CoreTemp actually has that function built in. Go to Options > Overheat Protection and you can set things up how you want.
Edited by GingerJohn - 8/2/11 at 10:24pm
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post #19 of 20
if the cpu reaches the temp limit, it will automatically shut down..
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post #20 of 20
most of it has been covered in this thread...
-pumps can die at any point for various reasons
-cpu will throttle and eventually shut off the computer
-everest/aida/coretemp/etc can be configured to auto shutdown based on a temperature threshold
-water will not boil

Back when I had dual loops, I had a pump die on me. I wasn't the wiser and the computer just shut off. Even though my pump stopped, and the cpu was getting hot enough to turn off, the water temp never went about 55C.

What I do now?
-Running single loop instead of dual loop w/ the pumps in serial (so redundant pumps)
-use everest to set a max gpu and cpu temp before auto shut down (75ish for both IIRC)
-the pumps are on a fan controller, that shows the RPM and will beep if it sees 0 RPM.
Edited by Elganja - 8/3/11 at 4:16am
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