EK pwm bleeding the loop

tyler_jrb

tyler_jrb

tyler_jrb

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So I managed to finally get my loop done today and have started bleeding it ready for full system use.

Only problem is bleeding it the pump, it is connected to seperate power supply but is a pwm pump so only seems to be running at its slowest speed which just isn't fast enough as I can see the jet of water coming from the pump its that slow.

Is there any way to force the pump to run full speed? Just that my cpu block is hardly full and don't really want to run the system incase it gets too hot. It really is running very slowly 1000ish rpm at most.

Thanks.
 
I had the exact same problem with the same pump recently. It was so slow in fact, I thought it was faulty and got onto EK about it! The pump won't speed up until it get a PWM signal from the mobo. I thought it would be like a PWM fan and run at 12v but no joy.
 
What did you have to do in the end? Run it with the system and edit the speed in the bios?

Did you have any issues while doing that?

Thanks :).
 
tyler_jrb said:
What did you have to do in the end? Run it with the system and edit the speed in the bios?

Did you have any issues while doing that?

Thanks :).
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I left it running really slow over night to leak test, although it took ages to fill the loop. Plugged in the whole system the following day to get the air out.
 
Sorted it out now to run full speed with a guide on the internet taking a wire from the end of the molex on the pump to the green wire on the header it is now full speed. Certainly shifting the water now! I'll leave it running for a good 12 hours to check for leaks and remove as much air as possible. Ill then run the system and adjust speed from there. Thanks guys.
 
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Brian18741 said:
How does one do such a thing?
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DISCLAIMER: I take no responsibility if you fry your pump by connecting 12V to the PWM header, if unsure, dont do it!



A 4-pin molex your pump use for power has four connectors in this order:
12V, GND, GND, 5V.

Your D5 pump draws power from the 12V and the GND next to it. Simply connect a wire from the connector opposite of the 12V (on that or another Molex from the PSU) to the pumps PWM header and you're all set.
 
tyler_jrb said:
Sorted it out now to run full speed with a guide on the internet taking a wire from the end of the molex on the pump to the green wire on the header it is now full speed. Certainly shifting the water now! I'll leave it running for a good 12 hours to check for leaks and remove as much air as possible. Ill then run the system and adjust speed from there. Thanks guys.
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Please dont be the "nvm solved it!" forum guy!!

Share the guide so Brian18741 also can solve his problem.
 
I will do the link no problem :), but it's pretty much a forum answer so I'll do a propper picture when I get my pc running tomorrow.

Picture is right at the bottom of page: basically plug pump to molex stick a long wire through the hole furthest from the red, then stick that into the front hole where the green cable is on the pwm connector.

Link
http://www.overclock.net/t/1534508/filling-a-new-loop-with-alphacool-vpp655-pwm
 
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Jokester said:
Cheers for the 5V tip, I've got a PWM pump for my next build and hadn't considered this.
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Have you already bought the pump? I wouldn't bother tbh, I have mine set the same in BIOS all the time so no point going for the PWM version over the Vario and you have another cable to hide/tidy and another header to use up.
 
Brian18741 said:
Have you already bought the pump? I wouldn't bother tbh, I have mine set the same in BIOS all the time so no point going for the PWM version over the Vario and you have another cable to hide/tidy and another header to use up.
Click to expand...
I'm building a passive build, so having a bit of extra control is handy.
 
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