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[Build Log] OREO BLITZ!!! (Merlin SM8 Water Cooled/ First Build EVER) - Page 10

post #91 of 140
Did you see my post earlier? The only difference between the regular version and the "S" version is that the "S" version is a little stronger.

Jeffinslaw
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post #92 of 140
Thread Starter 
yeah i saw it but there is a difference you may not have noticed which is that the 450 has a manual control on back whereas the 450s that i have has nothing on the back....

thats why im maybe wondering if the 3 pin has to be connected for the pumps to activate??? the manual dial would allow for some control whereas the "S" version maybe programmed to only start once it is being moniotred by the 3 pin connection??? idk but it is a difference between the two that maybe could have an effect...

thanks for posting the comparison though because it is helpful to notice that startup volatge is same between the two which means these should start fine upon me jumping the psu... which they are not haha
post #93 of 140
Yes, go ahead and plug it into your fan controller.

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post #94 of 140
Thread Starter 
ok cool, whne i get home ill try that as well as plug more fans into it to maybe draw some more power from psu and ill let you guys know what happens...

really ant think of anything else... been looking online all day
post #95 of 140
The 3 pin connector is for RPM sense only. It does not need to be connected for the pump to power. Disconnect everything from the PSU, then connect only the pumps and try to jumper the PSU again. I can confirm for you I have exactly the same pumps and res and I run it from an exterior power supply all the time.

Also when you say the pumps don't do anything are you sure? Have you touched the case to feel if they are vibrating? If you haven't bled the system yet they will not pump water. You have to be very careful on the initial power up to not burn up your pump they MUST have water on them at all times. You have to fill the res, then pulse the pumps by only turning the PSU on for 2-3 seconds at a time.

Also it helps a lot to fill the rest of the loop. If you have only filled the res then you have way too much air in the system. Raise the res above the rest of the components and tip it so the acrylic faces up. This will flow water into the loop.
post #96 of 140
Thread Starter 
I've tried now again and no success. All my components are outside the case so I have access to the pumps and even with my ear on them there is not a sound. I even used the same moles and connected fan controller with multiple fans and they all worked perfectly. Still though the pumps did not work at all. I can't completely fill the whole loop but I've definitely got a decent amount of water around and the res is full. There never has been any action from these pumps so I'm at a total loss now. Really upset about this because it doesn't make any sense. How could both be doing this ? Is it possible that my psu is not fully jumped? I randomly picked the pins but assume I have the right ones because the fan spins and I've given power to multiple things but maybe it's not enough??? Haha I have no idea at this point....

Pumps were expensive too 74 a pop...and the 3 pin thing didnt help I was wrong tongue.gif

I'm not so noob that I woudotn have noticed a dry pump breaking upon powering up. Is thing really has never done jack not a peep or flash or nothing.
post #97 of 140
Yes the molex plugs (especially corsair ones) are super tight, you need to apply a good amount of force in order to put them in place. Check if the pins between the pump(s) and the psu molex are making good contact. I had a case where the female pins from a uv-light pop off the molex due to the force applied and there was no contact between psu-light plugs.

If the psu is on and you can see fans spinning etc there is no reason that the pumps are not starting. Check the proprietary plug on the Psu part, maybe change the socket on the psu as well, just some ideas for troubleshooting from the top of my head. You are using top-notch components, cant believe that you are so unlucky to get two d5 that failed on you.
post #98 of 140
Have you tried just one pump at a time? If one pump is failed it may be pulling down the voltage on the other causing it not to start. Try pulsing a single pump and see if you get any flow. The 452 will run on a single pump.

Something else you can try is to loosen the bolts holding the pumps until water seeps out from the O-ring. This should purge the impeller housing of air. Be careful this can make a mess quick so do it away from components.

I don't know what other sources of power you have available you really need to rule out power supply or pumps. It's hard to believe both pumps have failed. Any power supply will work, or find some other 12 volt source. It is the green wire on the 24 pin cable and ANY black wire no other jumper is needed.
post #99 of 140
Seasonic manufactures power supplies for Corsair, one thing unique to Seasonic's brand power supplies is of a pull design meaning unless there's a significant power draw the PSU will not power-on! I'm not sure if the Corsair is of the same design, know though it's digitally controlled.
post #100 of 140
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