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1 question about pump

post #1 of 19
Thread Starter 
HI EVERYONE.
I have installed this Pump : Laing DDC-Pump 12V DDC-1RT/Plus with 2xG1/4-outer thread.
and my CW611 tell me he do 131 LPH. is this normal or not ?
what can i do if is not normal ?

sry for my bad english.

best regards.

Claudiu J.
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post #2 of 19
131 liter/hour = 0.576 gallon/minute [US]



https://martinsliquidlab.wordpress.com/2011/03/09/laing-ddc-1-ddc-1t/
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post #3 of 19
Whether the flow rate is normal or not depends completely on what components that flow rate is being pushed through. If it is lots of blocks it might be good. If it is only one it it is very poor.

Secondly the CW611 only works properly with a certain flow meter. So if you aren't using the correct one that indicated flow could be completely wrong.

So more info is needed. Otherwise its just like asking "is this a long enough piece of string".
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post #4 of 19
Thread Starter 
Quote:
Originally Posted by Jakusonfire View Post

Whether the flow rate is normal or not depends completely on what components that flow rate is being pushed through. If it is lots of blocks it might be good. If it is only one it it is very poor.

Secondly the CW611 only works properly with a certain flow meter. So if you aren't using the correct one that indicated flow could be completely wrong.

So more info is needed. Otherwise its just like asking "is this a long enough piece of string".



PUMP > RAD FRONT > RAD TOP > WB CPU > WB VGA (but is not installed yet) > RESERVOIR > PUMP

i put this for a better conection of all fittings
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post #5 of 19
The grapph and chart I posted shows what flow rate you should be getting when the pump is working against various resistances to flow rate. You have to add up the flow resistances of all the components in the loop (blocks, res, tubing, fittings) and then read what the pump should be putting out when working against that resistance.

The best way to measure flow rate is the "bucket test".




Perhaps reading Martin's Pump Planning Guide will help you.
 
 
Edited by billbartuska - 10/4/15 at 5:28am
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post #6 of 19
wow, charts, there so much help.

ok so I don't use charts, but I do have a system of my own, and I have done some tests on how the different flow rates through my radiators, did change the delta T of my system, therefor lowering the total load temps on my system.

http://www.overclock.net/t/1573189/serial-vs-parallel-9-6lpm

it starts with a serial loop and gets a little more complex from there.

well let me know if this helps, or if there is anything I can give a better explanation on for you.
post #7 of 19
Quote:
Originally Posted by toolmaker03 View Post

wow, charts, there so much help.

AHhhh. Delta T, that's where the answers are.........................

Martin'e website

Skinnee's website
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post #8 of 19
Ok, cool. So firstly that pump appears to be upside down. Though its hard to see exactly how it is connected to the loop, the heatsink up on top like that seems to indicate an inverted pump which is not a good idea if it can be avoided at all.

We really need the exact models of the blocks and other parts to add up the restriction. The rads look like modern Alphacool, so they will be low restriction.
Just looking at it, it seems like the flow rate is very very low for those parts so I would firstly be looking at a flow meter that is giving incorrect readings.

Most people understand that charts are merely the well presented, easy to read and repeatable results of others hard work performing very careful testing, using very expensive and sensitive gear. Instead of discounting them when they don't agree with their own vague anecdotal "tests".
Edited by Jakusonfire - 10/5/15 at 7:55am
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Kusanagi
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post #9 of 19
I agree with J. here.. that DDC is upside down... which is a big nono. The impeller is "scraping" the top... and it wont live long that way.
(i made a similar mistake +/- 20 years ago after my first ddc "caught fire" i mounted its replacement upside down in front of a fan to keep it bit better cooled. And thus that one seized after a few days mad.gif )

I cant immediately find the laing manuals & instructions, but this one from EK is close enough. It includes pump mounting postitions AND some performance curves/charts.

https://shop.ekwb.com/EK-IM/EK-IM-3830046995513.pdf


Oh, all these 90° fittings -especially those on the in & out of the pump are not helping smile.gif
post #10 of 19
To be clear the pump being upside down like that can be OK if it is done properly, several different DDC pump/res mounts work that way after all. It is just more difficult to set up that way without risking damage to the pump because it naturally wants to trap air in that orientation.

I would not expect that to be the cause of a low flow rate but just about anything is possible.
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