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Pump Issue

post #1 of 9
Thread Starter 
Hey guys, got the Z68 Extreme4 Gen3 and 2 laing ddc 18w pumps on a lamptron fc9 fan controller and the problem im having is that in both the asrock software and speedfan if I try to slow the pumps down the rpms dont monitor correctly, they occasionally jump to silly amounts or just read 0 but the pumps are running

Any ideas?

I have tried the pumps on both the 2 cpu fan headers and on the sys/aux 2 and 3 headers with no joy

I have checked the bios and the monitoring is even worse!

As soon as I lower the voltage the rpms fly all over the place shooting between 10,000 and 50,000 rpm even though at full speed they run around 4500rpm

Also though in the bios it does flick down to between 200 - 800rpm as if it is trying....

Also I dont seem to have any options to set alarms if they slow or fail?

Thanks in advance!
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post #2 of 9
I really dont get why people get TWO pumps, then turn them down! You should not use software or PWM control for something like that, use a rheostat like a Sunbeam or other brand.
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post #3 of 9
A quick question for you then ...

Are these pumps in series (one feeding the other)? If so, the head-pressure of one will spin the other regardless what software, voltage controls or BIOS setting you have.

If you are going to control the speed, voltage control would be best. Each pump would require it's own independent voltage control.

The first pump is easy to setup with a rheostat along with the pump tach wire going back to your Lamptron FC9. Run the loop with the second pump off. take a reading on the first pump's RPM and see how it will level off with a normal range high/low.

The second pump is where the fun begins. Set up the pump like the first one. When running the second pump, have it at the lowest setting; usually above 7.5VDC. Watch the RPMs on the first pump level out again. The second pump's RPM's would be a tad higher.

Rule of thumb here, allow the first pump to have the push effect or a little more power, and then allow the second pump to spin while upping the power in tiny increments. When things are flowing nicely, smoothly and the RPMs enjoy a good happy range, you are all set.

Just dial the pumps into the flow easily to the setting you need.

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post #4 of 9
Thread Starter 
Sorry I should of been clearer in the first post

I have 2 seperate loops, 1 pump on each, I chose this to be able to slow them down to have good flow and quiet while running

Both pumps have the monitor wire directly connected to the motherboard and each pump is directly connected to it's own channel on the fc9

Fc9 uses voltage control so in theory this setup should work fine, why can't I monitor rpms?
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post #5 of 9
People who think these things are loud kill me....
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post #6 of 9
Thread Starter 
I did not say they are loud but with 2 running at full speed I can hear them at quiet parts of movies over my fans easy, slowing them I cant hear them but it would be nice to be able to monitor them also then set up an alarm if they drop below a certain rpm...
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post #7 of 9
Quote:
Originally Posted by Furball Zen View Post

People who think these things are loud kill me....

Would you believe me if I said my DDC w/ DIYINHK board is louder than the rest of my computer if running full speed?
 
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post #8 of 9
Thread Starter 
can someone please try to help?
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post #9 of 9
I meant in general. Why not do this? Use a DPST switch wire the center to your 12V in on the pump, and wire 12V and 7V on the other terminals, then you can switch between 12 and 7V when ever you want. And in case you think you need a huge honking switch.., this will more than handle the load. And yes i realize youre across the pond.
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