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Laing ddc 1t pump wiring issues - Page 2

post #11 of 17
Now this is a very very strange thing to happen.

I'm not EE nor a fancy tech, but I did get a pump testing station to verify the pumps respond to power and an RPM reading. The tester only hits the power at 9VDC for under three seconds to evaluate a good pump.

In the past month, I've two pumps sitting on the shelf. They would not respond to the pump testing station, so i left them there. I'll need to investigate this issue closer now. All pumps that go out have passed the testing station. This is just plain weird. biggrin.gif

I'll look at the pump p/n's and revision levels. Even the PCB tracings. If something turns up, I got to give my contact over at the manufacture a ring to inquire.

The pump does have a marking of IP32 in Martin's image above. That's some sort of IC chip that sits on the PCB. I was told awhile back that a later replacement IC for the DDC 10W could do the PCB jumper mod. BUT, please people do not try this until I get this sorted out. Hate to have someone try it and kill the pump. Or, if I do find out it does work, OH BOY! Will get around to this after I shake this nasty cold of cough and runny nose. Don't worry, my sister is healthy and knows what to do to pre-test and send stuff out.
thumb.gif

And as always, Still have pumps available.



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Edited by bmaverick - 1/12/12 at 9:38pm
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post #12 of 17
Quote:
Originally Posted by Martinm210 View Post

FWIW, I just double checked mine, and this is exactly what works for me. #1 is positive, and #3 is negative:

Maybe there is more than one variant, I know Laing had quite a few revisions over the years.

Martin, I understand what you mean about which wire being positive & ground, but what about which wires connect to which pins on the connector. Did you find them different from how your image is labelled?

I'm not ready to test my pumps wires yet, anyway, having realized that unlike a fan or some other electrical item, before plugging the pump in I need to have tubing connected and a steady source of water, lest I run the pump dry.
post #13 of 17
Quote:
Originally Posted by cyclometric View Post

Martin, I understand what you mean about which wire being positive & ground, but what about which wires connect to which pins on the connector. Did you find them different from how your image is labelled?
I'm not ready to test my pumps wires yet, anyway, having realized that unlike a fan or some other electrical item, before plugging the pump in I need to have tubing connected and a steady source of water, lest I run the pump dry.

Nope, that's how they work on my plug as labeled too. I just did a quick 1 second turn on dry on my bench both ways, no problem. Running one dry for a second isn't going to hurt anything, and you could put a drop of water on the bearing if you want to be extra careful.

Anyhow, no problems with mine, works just like the images. Unless I somehow mixed up wires before labeling which I guess is possible.
    
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post #14 of 17
So I'm finally getting ready to solder on a connector and would love to attach a 3-pin fan type connector, as I think this pump can easily be powered by my motherboard's system fan header; can anyone confirm whether that's a good idea or not? I think I've read that these (9/10 watt) pumps are easily handled by a m/b header, but just wanted to check.

thanks,
post #15 of 17
Check into your motherboard specs first. I wouldn't do it otherwise..thats still quite a bit of power and heat to dissipate at lower volts.
    
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post #16 of 17
Hi also got pumps off bmaverick, the pumps look fine they survived the trip, any how I have or ready opened them up and so far I have wired them up the way Martinsliquidlab.org have said to, i have double checked which wire goes where as I did find that I wired it up wrong the first time, this very easy to as all the wires are black. so I have colour coded the wires with nail polish so I know which ones are which.

Also because I have seen no one say anything about it, the pins that are on the end of the wires are the same ones that are used with the 3 pin fan connectors, so that is what I have done, I now have fan connectors on my pumps without soldering anything, so that works for me. (I know takes away from the fun)

I don't know when I will get around to testing everything first I have to leak test the pumps then leak test the loop.

If I have any more dramas with the wire set-up I'll post about it.

Ashley
post #17 of 17
As for the pumps I have now, nobody needs to re-wire them. wink.gif

The pumps that come with the black connector are a 4-pin fan connector. This is a 4-pin fan connector that easily plugs into a 3-pin fan header on the MB or a fan controller. See this link to understand that the pumps are now just plug-n-play. No need to re-wire anything now unless you need a Molex.

http://www.allpinouts.org/index.php/Motherboard_%28CPU%29_4_Pin_Fan


Hope this helps if others obtain pumps I have.




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