EK D5 pump strange noise.

tyler_jrb

tyler_jrb

tyler_jrb

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So my EK d5 pump makes a very strange noise when its somewhat over 80% speed and certainly audible at 100% speed. Its like a crackling/ buzzing noise and I am unsure if its a problem with the pump or my loop. Havent had any leaks with the system. Sounded like this ever since i put it in the loop, i think it did anyway.

I currently run the pump on 70% and as you will hear in the video the noise is gone. I have used a screwdriver to gently place onto the pump and motor and listen but the pump itself inside doesnt sound anything like this, its more like a buzzing noise that you would expect, no scraping or grounching, squeeking etc. Its not my case and Im unsure if it is a normal noise or not. Was watching some videos with the same pump and sounded nothing like mine on full speed, really quiet. So i became worried.

Im not sure if its cavitation, but i cannot see or hear any bubbles going around in my loop at all.

Here is the video, + waiting for pwm controller hense the 2 performance sp120s at the back sounding like airplane engines.


As you can see you can hear when i speed up and slow the pump down. I dont think it will be a problem due to me not running the pump that high anyway, thus the noise is completely gone. Just was curious why.

thanks :)
 
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Think its RMA time for me. Fired up the pc and it seems to be making the noise on all RPM's now. Further more I stripped down the pump to see if there was some dirt or something but I could quite clearly see the damaged impeller which is quite bruised and scraped. There is also a small chunk out of on of the veins on the impeller. Annoyed :(.

Everything I buy doesnt work properly, :/





 
Looks like something nasty has got in it and damaged it to me, out of the rad maybe.

Flush rads out when you got them?

Trouble is like any thing that spins, if it gets damaged it inherently unbalances it thus causing problems.

I take it they are scratches that am seeing in the bottom two pics ?
 
It made the noise ever since I received it just didn't think anything of it. And yes all components including rads were flushed. One did have some green specks in but I flushed several times until clean. When I removed the fluid it was clean aswell.

I think the scratches are quality check marks but the bruising and wear on the outside was caused by the top as there was wear on the inside, that's what EK said anyway.

Other than that I have a new non pwm pump and new top coming as the pwm is too much hastle. So should be sorted.

Just unlucky I guess :(.
 
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pete910 said:
How is a pwm is too much hastle :confused:
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to bleed the loop i have to take a wire from the molex and stick it into the pwm header or it runs at like 500rpm, if the pwm signal goes it reverts to extremely slow speed and you have almost standing water in the blocks. I run the pump at the same settings anyway so easier to set and forget.

I want to connect my corsair sp120 fans into the cpu header aswell so they will speed up in game (as i use headphones) and revert to minimal speed and noise when using the desktop and non-intensive applications.
 
tyler_jrb said:
to bleed the loop i have to take a wire from the molex and stick it into the pwm header or it runs at like 500rpm, if the pwm signal goes it reverts to extremely slow speed and you have almost standing water in the blocks. I run the pump at the same settings anyway so easier to set and forget.

I want to connect my corsair sp120 fans into the cpu header aswell so they will speed up in game (as i use headphones) and revert to minimal speed and noise when using the desktop and non-intensive applications.
Click to expand...

mmm, mine runs flat out when not connected to a header. :confused:

Seen others post this issue too as I pointed it out in another thread . wierd!

@CoolHotCold
The damage that's seen in this thread has nothing to do with it been a PWM or not pump
 
My D5 vario looks the exact same scratches wise while using it with a EK top and runs quietly.

The PWN d5 actually runs at 60% if not connected via PWM, personally to me there is really no need for you to adjust your d5 pumps speed, I would much rather set & forget it.
 
I was in the market for a D5, the general consensus is the Vario is fine in 90% of cases, better for filling the loop and eliminating air pockets as it can be run without the pc being on.

Went for the Vario over the PWM in the end, set it on 3, forgotten about it, no issues.

Read a lot about the D5 uses a non-standard Intel implementation of the PWM and can cause issues with mobo makers.
 
pete910 said:
Again not really a fair statement as the PWM D5's are fine.
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How is that not a fair statement? I have one and think the pwm function is completely pointless. In future I will simply buy the vario version and set it to 3 and forget about it. Filling the loop and bleeding it were a nightmare due to it running at very low duty cycle. No matter what I do in bios mine will not run over 3500rpm.

Which is fine tbh as it equates to about level 3 on the vario version and l can't hear it and just leave it set there but again, why faff about, just get the vario version.

All the pwm version does is take up motherboard header, give you another cable to manage and give you a headache.

Pwm d5s are a load of bollix. They needlessly complicate things and offer no advantage over their non pwm brethren.
 
Mine certainly didnt run at 60% beleive me, it took it about 30 seconds to empty the reservoir without a pwm signal. I could also see the stream of water coming out of the outlet on the pump. My cpu block was half full aswell.

I know the scratches are normal as they are quality check marks. The bruising, chips and wear on the front face is not. It catching on the top also is not normal.

Will be fitting the new pump tomorrow just a standard so no pwm signal. Hopefully will now be nice and quite :).
 
Brian18741 said:
Pwm d5s are a load of bollix. They needlessly complicate things and offer no advantage over their non pwm brethren.
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Lol, just because it may not suite you does not equate it to been "bollix" so it's not a "fair" statement !

As i've stated in a previous post my D5 does run at full chat when not connected to a header.

The "extra" wiring is kinda mute and lets be honest if that's what you are using as an one of the issues as a basis for them been "bollix" well! :rolleyes:

Though I think i would be looking at your board if even setting the header to 100% didn't do any thing

Mine works fine through bois/windows and even linux.
 
pete910 said:
Lol, just because it may not suite you does not equate it to been "bollix" so it's not a "fair" statement !

As i've stated in a previous post my D5 does run at full chat when not connected to a header.

The "extra" wiring is kinda mute and lets be honest if that's what you are using as an one of the issues as a basis for them been "bollix" well! :rolleyes:

Though I think i would be looking at your board if even setting the header to 100% didn't do any thing

Mine works fine through bois/windows and even linux.
Click to expand...

Mine was ok with the bios, didnt have a problem adjusting the speed etc. Just found that with no signal it ran below minimal speed. This was with the EK D5 X-top pump. my overclock failed once and I came in to find the pump running without a signal and the cpu block about half full.

The cpu was sitting at 60c+, luckily i only left it for a few minutes or it could have been a problem. Ive reverted to using the standard pump now so i dont have to worry so much and just set and forget kind of thing.
 
New pump installed and it is super quiet compared to the old one, just a slight hum even at full speed. Also far easier to bleed and no messing around. Running perfectly.
 
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