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General Liquid/Water Cooling Discussion For discussion about Full Cooling System kits, or general cooling topics. Keep specific cooling items like pumps, radiators, etc... in their specific forums. |
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#1 |
Cooling Savant
Join Date: Jan 2003
Location: Los Angeles
Posts: 365
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Well I have another dilema. pH says no on the relay, Bladerunner says yes, I say wtf damn water cooling
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#2 | |
Cooling Savant
Join Date: May 2001
Location: Brussels - Belgium
Posts: 232
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I had pump failures due to bad impeller bearing development (especially with the italian Sicce and Sacem brands, when closed motor mag drive pumps began to appear in aquariums in the 70's). You can compare it to a fluorescent (TL) lamp. It's generally admitted that switching TL lamps shortens their life and that it's better to leave them on rather than switching them on and off. Sure, but switching on and off the TL a couple of times and leaving it off during 12 hours in total or so a day will gain you a lot more life expectancy than when you leave it on 24/24... Also, good quality (electromagnetic) relays are rated for (tens or hundreds of) thousands of switch cycles, so don't worry about it. Of course, this is only my opinion... CD ![]()
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#3 |
Cooling Savant
Join Date: Nov 2003
Location: Indiana
Posts: 127
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I agre with Turbokeu.
And so I leave my box running 24/7 only shutting down to swap hardware etc... I think the heat cycle on the pump is the big killer, I see it the same as race engines, it's not so much the big power high R's that kill em it's the heat cycles when they are up to temp then shut down, parts are made to run at a certain temp and things tend to swell when hot. The relay I agree also, the relay should long outlive the pump and probably everything else in your box. I agree with bladerunner on the relay. I like a relay only because my memory sucks ![]() ![]() Just a good failsafe having a relay. They are so easy to install I see not installing one as a bit lazy, spend all that money on the best water cooling stuff only to skimp on something as simple as a relay. Doesn't make sense to me, IMHO. |
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#4 |
Thermophile
Join Date: Sep 2002
Location: Charlotte, NC
Posts: 1,014
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Plus relays are very cheap to make.
![]() This is my relay, made from the plug of an old power supply, the wires from an old fan, a tiny project box, and a relay from radio shack. Total project cost: $10 and it is activated by a fan header from the motherboard.
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#5 | |
Cooling Savant
Join Date: May 2001
Location: Brussels - Belgium
Posts: 232
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![]() I'm stating the opposite of what you tell in your reply... BTW, I do not agree about the heat cycles when switching the pump, my water temp is maximum 30°C when running Prime95 @ about 20-22°C ambient. So temp gradient is about 10°C. Car motors run @ about 90°C or more water temperature even when ambient is -40°C... The advantage of a relay is that you know your pump is powered on when you switch on your PC, and powered off when you switch it off. (I know, it's not sure for 100%, but then I have a digital flowmeter that indicates if the pump is running...) Anyway, I'm from the "old" generation, if you don't need it, don't power it... ![]() CD ![]()
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#6 |
Cooling Savant
Join Date: Jan 2003
Location: Los Angeles
Posts: 365
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Thanks fellas!
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#7 |
Cooling Savant
Join Date: Nov 2003
Location: Indiana
Posts: 127
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Didn't read your reply all the way through
![]() No I don't agree ![]() The last reply I agree with the you about the pump being on when the comps turned on, that's what I meant by a "failsafe" ![]() Last edited by rocketmanx; 12-22-2003 at 01:08 AM. |
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#8 | |
Cooling Savant
Join Date: May 2001
Location: Brussels - Belgium
Posts: 232
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![]() Quote:
In many reef aquariums they use wavegenerators to alternately switch two pumps every few seconds to simulate the back and forth waterflow of waves... CD ![]()
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#9 |
Cooling Savant
Join Date: Apr 2003
Location: San Mateo, CA, USA, Earth
Posts: 433
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I agree that a relay in or from your power supply to switch on the pump is a good idea.
My only reason for NOT doing it is because I'd like to know if I have a leak in my system BEFORE I power the motherboard or CPU. Again, that's the only reason I don't do it. I have my pump on a separate power cord and always verify the system after I've either moved it to a LAN party or done any maintenance on it. Hope that helps you some... ![]()
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#10 |
Cooling Savant
Join Date: Nov 2003
Location: Indiana
Posts: 127
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I have seperate cods as well MMZ. I switch the wires on the Swifty relay for bleeding leak checking. Don't know why you'd want to put them both on the same cord? How would you bleed the system?
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#11 | |
Cooling Savant
Join Date: Jul 2001
Location: Chesterfield Uk
Posts: 459
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![]() I'm also not in favour of running pumps continuously when the PC is off. Unless you physically turn your PC off at the power outlet all the time, (which is a pita), there is still 5v standby on the mobo and mains in the PSU. That's not an ideal for any leak situation if you are sleeping or away from home.
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#12 | |
Cooling Savant
Join Date: Jan 2003
Location: Los Angeles
Posts: 365
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Btw, Bladerunner, you make the best looking blocks I have ever seen and if you get your stuff on the market I will definately buy, even if only for ohhhss and aaahhhsss (my own that is) ![]() |
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#13 |
Cooling Savant
Join Date: Jan 2003
Location: Los Angeles
Posts: 365
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Well I did it and every time I turn the comp on or off I get this crackling noise (as though there is air in the system). Is this going to kill the pump? Am I doing something wrong. I have an air trap and I have run this damn thing for days:shrug: and I have shaken and turned and banged this damn thing a million times. I love water cooling but
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#14 |
Cooling Savant
Join Date: Jan 2003
Location: Los Angeles
Posts: 365
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anyone? I just wanna know if this is normal or did I do something wrong?
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