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  Topic Review (Newest First)
06-03-2020 01:37 AM
war4peace
Quote: Originally Posted by looniam View Post
then why buy a PWM pump?
Because it offers a quick and inexpensive way to eliminate vibrations at certain speeds, and you can fine-tune it for absolute silence.
And because most pumps nowadays are PWM

Quote: Originally Posted by looniam View Post
aside from the 1GPM "standard," i suspect setting pumps speed(s) more of a personal preference. i see no need to run anything at 100% while idling for hours.
There is no need to run at 100%, as well as there's no need to reduce pump speed to less than that. Certainly not to "increase pump lifespan".
I was referring to people recommending lower pump speeds to "avoid damaging the pump", I have no quarrel with people setting their pump speeds for other reasons. To each their own.

Quote: Originally Posted by valvehead View Post
I also use a curve controller for the pump. I chose a silent speed for the minimum, and the pump only speeds up after the fans are at a high enough level that they mask the increase in pump noise.
I wonder why would the pump make noise in the first place. I assume it's about how it's installed in the system.

Quote: Originally Posted by valvehead View Post
I use water-air delta as the controlling temp. Some people use absolute temps, but I prefer consistent noise level for a given load. I could run at lower fan and pump settings in winter, but I'm not limited by temps for stability anyway.
I eliminated noise by oversizing the radiator. Fans at 400 RPM at all times, pumps at 100% (both of them), liquid temperature almost never exceeds 40 degrees Celsius except while very heavy gaming in SLI during very hot summer days, and then fans ramp up to 500-550 RPM to maintain 40 degrees Celsius liquid temperature. Right now ambient temperature is 23.7 degrees Celsius and liquid temperature is 26.8.

Quote: Originally Posted by valvehead View Post
If you're experiencing ping pong with your pump, then either your controller is restricted to too small of a temperature range and/or you need more thermal mass (more water -> larger reservoir if necessary) to slow down the drift.
Larger reservoir? It has nothing to do with cooling, except maybe introducing some 30-second delay in liquid temperature stabilization (by the way, that delay works both ways). That is, of course, unless you have a 50L reservoir
06-03-2020 01:06 AM
ManniX-ITA
Quote: Originally Posted by gftgy View Post
What about this green wire? Are you absolutely certain? What you've said doesn't seem to align with the threads you linked earlier.
Of course it doesn't sorry I didn't check properly
Doing too much stuff in parallel...
Obviously it's the green wire as described in the threads.
You have to split the green wire.
Don't connect the purple and black, it's the Standby voltage.
Had to find out months ago how to connect it but then I didn't and meanwhile my memory faded away...
06-03-2020 12:40 AM
gftgy
Quote: Originally Posted by ManniX-ITA View Post
Sorry I had a look at the picture and had the impression they were both purple
Took out the adapter and indeed one is black,
It doesn't really matter which one you put where, the relay will either close or open wire 1/2 with wire 3.
Just like shortening the power on pins with a screwdriver head.

For correctness put the black one on pin 3 and purple on pin 1.
What about this green wire? Are you absolutely certain? What you've said doesn't seem to align with the threads you linked earlier.
06-02-2020 11:12 PM
valvehead
Quote: Originally Posted by helis4life View Post
I agree, having it running at 100% while you browse overclock.net doesnt seem necessary. I sit 1 meter from the machine, so at 100% I can hear it, at 40% i cant.


I also have never experienced any such ping pong affect. But like you said, personal preference really, no right or wrong way
I also use a curve controller for the pump. I chose a silent speed for the minimum, and the pump only speeds up after the fans are at a high enough level that they mask the increase in pump noise.

I use water-air delta as the controlling temp. Some people use absolute temps, but I prefer consistent noise level for a given load. I could run at lower fan and pump settings in winter, but I'm not limited by temps for stability anyway.

If you're experiencing ping pong with your pump, then either your controller is restricted to too small of a temperature range and/or you need more thermal mass (more water -> larger reservoir if necessary) to slow down the drift.
06-02-2020 06:43 PM
helis4life
Quote: Originally Posted by looniam View Post
then why buy a PWM pump?

and funny i don't experience any ping pong effect. certainly not after taking a few days to tighten the fan curve:
Attachment 351320
aside from the 1GPM "standard," i suspect setting pumps speed(s) more of a personal preference. i see no need to run anything at 100% while idling for hours.
I agree, having it running at 100% while you browse overclock.net doesnt seem necessary. I sit 1 meter from the machine, so at 100% I can hear it, at 40% i cant.


I also have never experienced any such ping pong affect. But like you said, personal preference really, no right or wrong way
06-02-2020 12:18 PM
looniam
Quote: Originally Posted by war4peace View Post
Pretty much this.
I've seen some amazingly uninformed posts on Facebook about low pump speed, from "it would not wear as much", "increases lifespan" and other nonsense. Well, OK, academically there could be a 5% life span improvement, in theory, but in practice there is no benefit. Quite the contrary, if the flow is too low you might get laminar flow in the radiators, which means faster idle temperature increase and basically playing ping-pong with pump speed. It goes low speed, temperatures rise, it goes faster speed, temperatures drop, it goes low speed again and so on, ad nauseam.
Set your pumps at 100% (which by the way is their nominal, not maximum speed) and keep them there, and if there's vibration, then one needs to dampen it through other means, rather then reducing speed.
then why buy a PWM pump?

and funny i don't experience any ping pong effect. certainly not after taking a few days to tighten the fan curve:
Attachment 351320
aside from the 1GPM "standard," i suspect setting pumps speed(s) more of a personal preference. i see no need to run anything at 100% while idling for hours.
06-02-2020 08:19 AM
zeroibis
Quote: Originally Posted by WiLd FyeR View Post
Does anyone have any ideas on how to mount the Aquaero 6 in cases with no 5.25 mounts?
https://www.overclock.net/photopost/...172922151.jpeg
06-02-2020 07:56 AM
zeroibis
Quote: Originally Posted by ManniX-ITA View Post
Wow, 3 years maintenance free is awesome.
Thanks for the feedback.

I expect to add some coolant within the next 12 months but I have no plans to drain anything until at least 5-7 years or unless I add any new equipment to the loop.
06-02-2020 07:27 AM
ManniX-ITA
Quote: Originally Posted by zeroibis View Post
In the past I literally ran pure Ethylene Glycol for years on end without issue. The only issue I have ever had is plasticizer gunk from tubing that I 100% avoid by using ZMT tubing on current builds. Currently I use a Mayhems concentrate with water in same loop for going on 3 years now maintenance free, my res level has dropped by about 20ml in that time. Now when you get into the dyes and all the other crazy things you may need to do a lot more work. However, if your wanting maintenance free you are going to want something other than just 100% water to get the job done.
Wow, 3 years maintenance free is awesome.
Thanks for the feedback.
06-02-2020 07:23 AM
zeroibis
Quote: Originally Posted by chibi View Post
Thanks for the info janco! I already have an AQ6 so getting a quadro or octo seems like another expense that could be utilized elsewhere. May go with different fans instead.

Edit - looks like newer batches Noctua and EK fans are now facing this issue as well. I have a set of eLoop PWM fans and some Corsair ML's available but both make a humming noise when I close my Caselabs panels with grills.

I have had the ML hum on some fans but only after years of usage. Have yet to dig deep to identify the exact cause and correct it. Only occurs are particular RPM levels. (also on CaseLabs)
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