Pump producing hardly any power?!

TheNoviceModder · 16 Mar 2015 at 20:15

PROBLEM SOLVED! Was just a lack of water in the system, it's filling much quicker now as I type this. Air bubbles too. Thanks everyone for your input

So, I've just started to fill my first loop. I fill the res, which feeds down into the pump & goes back up to the cpu block. The pump is running, I hear it, but it isn't pumping the water past the cpu block section. It struggled to get the water up there but got there just about with a few tilts of the case. Is this normal for a first fill? or should the pump push the water through much faster?

I have the molex from the pump connected to the led strip molex's (enthoo primo). Is this the reason?

Cerelia · 16 Mar 2015 at 20:23

Is the 3 or 4 pin connector connected? It'll be slow if its PWM and its not connected (4pin )

TheNoviceModder · 16 Mar 2015 at 20:29

Cerelia said:
Is the 3 or 4 pin connector connected? It'll be slow if its PWM and its not connected (4pin )

It's not connected, but when it is it won't pump anything at all because the mobo has no power. The 24pin is on the paperclip treatment & the 8pin isn't connected. Should I connect the 8pin to the psu?

Jokester · 16 Mar 2015 at 20:29

It's probably air lock stopping it flowing. Keep tilting, stopping/starting the pump and topping the res up.

MrMD · 16 Mar 2015 at 20:31

I would definatly plug the pump straight into the psu via molex rather than piggybacking another molex connection

What are the parts in your loop?You havent let your pump run dry have you?

Disco_P · 16 Mar 2015 at 20:32

First and foremost which pump are you using?

TheNoviceModder · 16 Mar 2015 at 20:41

Disco_P said:
First and foremost which pump are you using?

EK D5 with pwm control

MrMD said:
I would definatly plug the pump straight into the psu via molex rather than piggybacking another molex connection

What are the parts in your loop?You havent let your pump run dry have you?

I haven't got the right cables to connect it straight to the psu. It has a male molex connector & I only have a male to pci-e connector

It's only a cpu loop. It's not running dry, I can hear the air bubbles in the pump right now.

Cerelia · 16 Mar 2015 at 22:58

Im fairly sure even without power all the pump needs is that circuit completed. If you plug it in, it'll work. I've the same pump and without the 4 pin connected its snails pace, once plugged in its super fast.

TheNoviceModder · 17 Mar 2015 at 00:27

Cerelia said:
Im fairly sure even without power all the pump needs is that circuit completed. If you plug it in, it'll work. I've the same pump and without the 4 pin connected its snails pace, once plugged in its super fast.

After a fairly quick leak test. Like, maybe an hour or two, I've plugged everything back in & turned it on. Got the 4 pin plugged into the cpu_opt header & am able to control the pump via the Asus thermal radar software. Turned the 'cpu fan speed' up to max to see what it was affecting, the pump nearly took off aha! Bubbles storming through the loop & out. That's one way to get rid of them in a hurry aha! Got it sitting at 50% now for a bit & it's silent

Cerelia · 17 Mar 2015 at 08:22

Ironicly, this thread helped me also. I was unable to reduce the speed on mine till I put it in the CPU_header and now its finally not running full speed lol. Even reduced temps by 3-6c on idle.

TheNoviceModder · 17 Mar 2015 at 18:51

Cerelia said:
Ironicly, this thread helped me also. I was unable to reduce the speed on mine till I put it in the CPU_header and now its finally not running full speed lol. Even reduced temps by 3-6c on idle.

Oh sweet! Glad I could help aha

I just remember someone saying that the cpu header on most/all modern motherboards have pwm control.