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24/7 Pump concerns (MCP-655 AKA Laing D5)

post #1 of 42
Thread Starter 
I soon will purchase parts for my custom water cooling kit. I am going to be using an MCP-655 pump. I was planning to leave the computer on 24/7 or at least during the daytime to fold. However, I am worried that if the pump inevitably stops working, something may become fried and I won't be able to do anything since I'm not home during the daytime. I know many people on OCN leave their systems on 24/7. Is such a thing a possibility/danger?
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post #2 of 42
You could add another pump so if one fails the other will continue working (unless you're really unlucky and both fail simultaneously). Also thermal shutdown would be initiated if the temps reach very high levels. Your BIOS may give you options to shutdown at specified temps. You can configure Real Temp (with a bit or work) to initiate a shutdown if the CPU or GPU temps reach a specified temperature.
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post #3 of 42
You should check the estimated runtime on pumps, also having two helps to lessen the stress and you probably have unsettled things with Karma if both of them fail at the same time biggrin.gif
post #4 of 42
I left mine on and folding for months but don't anymore due to electrical costs. It's a reliable pump and should be fine for 24/7 usage. If you've got the vario you can always turn it down, mine's running on setting one and cools my cards perfectly. thumb.gif

As Big Elf said, most bioses will allow you to shut your PC down when temperatures go above a certain amount which should prevent any damage from being caused and there's always the software option too.
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post #5 of 42
Like mentioned above set your computer to shut down if it breaches a certain temp so no harm is done.

That being said, MCP655's have very good life spans with a low failure rate, so you shouldn't worry. thumb.gif
 
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post #6 of 42
Quote:
Originally Posted by Big Elf View Post

You could add another pump so if one fails the other will continue working (unless you're really unlucky and both fail simultaneously). Also thermal shutdown would be initiated if the temps reach very high levels. Your BIOS may give you options to shutdown at specified temps. You can configure Real Temp (with a bit or work) to initiate a shutdown if the CPU or GPU temps reach a specified temperature.

That and you could get a flow meter. Plug it into the mobo and have it shut the puter off if it gets below a certain rpm.
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post #7 of 42
I've got two D5s, one's been running for two years, the other for 30 months or so. Definitely built well and built to last. If you want some backups and you don't want to spring for a flowmeter, you can install Speedfan, and buy the D5 version with the RPM lead (or solder the RPM lead to the vario model yourself) and then set up a speedfan event to shut down the comp if the pump quits. Speedfan can also be configured to do things like send you an email if the pump fails if you're working remotely. As for me, I just have two pumps, BIOS thermal cutoffs in place and my fingers crossed. I wouldn't worry about longevity though. Another trick to making the pumps last longer is to reduce the RPMs, the 'standard' D5 (non-vario) runs at speed 4, vs the max of speed 5 on the -b (vario) model. I have two varios and I control them manually, though the stock versions could be plugged into a voltage controller and turned down if desired. I run both of mine at 5, with no noise problems or anything.
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post #8 of 42
Aside from the BIOS shutting down the computer when temperatures become too high, motherboards have BIOS options to shut down the computer when the CPU fan fails. I used to plug my pump into the CPU fan header (just for the RPM signal as the pump was powered by molex) and if it failed the board would shut down (you can test this by unplugging the pump and seeing what happens). Now I use two pumps redundancy although I don't think it is necessary.
 
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post #9 of 42
Thread Starter 
Quote:
Originally Posted by Big Elf View Post

You could add another pump so if one fails the other will continue working (unless you're really unlucky and both fail simultaneously). Also thermal shutdown would be initiated if the temps reach very high levels. Your BIOS may give you options to shutdown at specified temps. You can configure Real Temp (with a bit or work) to initiate a shutdown if the CPU or GPU temps reach a specified temperature.

I'll do that. Thank you. Could I have the other one as a cheaper pump to save on costs or would I have to buy two MCP-655's? +1 REP
Quote:
Originally Posted by mdatmo View Post

Aside from the BIOS shutting down the computer when temperatures become too high, motherboards have BIOS options to shut down the computer when the CPU fan fails. I used to plug my pump into the CPU fan header (just for the RPM signal as the pump was powered by molex) and if it failed the board would shut down (you can test this by unplugging the pump and seeing what happens). Now I use two pumps redundancy although I don't think it is necessary.

I'd do that but I'll be controlling it with a fan controller as I want it to be quiet sometimes. thumb.gif +1 REP
Quote:
Originally Posted by SaltwaterCooled View Post

I've got two D5s, one's been running for two years, the other for 30 months or so. Definitely built well and built to last. If you want some backups and you don't want to spring for a flowmeter, you can install Speedfan, and buy the D5 version with the RPM lead (or solder the RPM lead to the vario model yourself) and then set up a speedfan event to shut down the comp if the pump quits. Speedfan can also be configured to do things like send you an email if the pump fails if you're working remotely. As for me, I just have two pumps, BIOS thermal cutoffs in place and my fingers crossed. I wouldn't worry about longevity though. Another trick to making the pumps last longer is to reduce the RPMs, the 'standard' D5 (non-vario) runs at speed 4, vs the max of speed 5 on the -b (vario) model. I have two varios and I control them manually, though the stock versions could be plugged into a voltage controller and turned down if desired. I run both of mine at 5, with no noise problems or anything.
I'll use two pumps-perhaps two D5's and let it do a thermal shut-off if needed. How loud will using two pumps be?
Quote:
Originally Posted by deafboy View Post

Like mentioned above set your computer to shut down if it breaches a certain temp so no harm is done.

That being said, MCP655's have very good life spans with a low failure rate, so you shouldn't worry. thumb.gif
I still need to have precautions in place.
Edited by asuperpower - 12/12/11 at 3:10pm
   
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Allen & Heath GS-R24 Mixing desk Custom made desk 
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Crucial M4 aM4azing SSD [64GB] Kingston HyperX HypersoniX SSD [120GB] Kingston SSDNow V100+ 6Gb/s SSD [60GB] Seagate 7200RPM HDD [1TB] 
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HAF X Steelseries Sensei [RAW] Rubberised AG Holomat Interdyn P1.5 Hi-Fi speakers 
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Rotel R8-9608X amplifier Lexicon Lambda Audio Interface Grado SR125i 
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Super Writemaster DVD Drive Arqtik 180SDD TEC Arqtik Single TEC Controller AquaComputer AquagraFX GTX880 Waterblock 
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EK FC680 DCUII Waterblock [x3] EK Rampage IV Extreme Waterblock 3xXSPC RX480 [1x480 for CPU] [2x480 for GPU] 1xXSPC RX240 [For motherboard waterblock] 
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post #10 of 42
I've only used pumps of the same type in a loop but Martin who has tested multiple pumps has this to say:

'I purposely chose to use two different pumps for a couple of reasons. For starters, there is a “forum myth”, that you need to match two like pumps when run in the same loop. I believe this grows from an assumption that the impeller speeds need to match and also because of the fear that one stronger pump would “Push” the weaker pump beyond it’s abilities. Fortunately, this myth is wrong. As long as the net system flow rate does not exceed either one of the pump’s operating range, there is no problem at all with mixing different pumps. Actually, I would recommend it over two of the same because they have different noise frequencies. Due to this difference in noise output, the combined mixture of noise is smoother than putting two exact pumps together. In addition, I have experienced RPM harmonics between two like pumps where if the RPMs are extremely close, but just slightly off..you can get an undulating harmonic noise effect that can be very harsh.'
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