Aaargh! Eheim 1048 pump vibrates LOUD

[dorkface]

So I thought I would quiet down my system by going to watercooling (using the Innovatek kit). But the vibration of the Ehaim 1048 pump makes my whole case resonate, and produces a far louder and annoying hum than I had with aircooling.

I tried rubber washers, I tried mounting the pump on a bed of matting (the stuff that you put under carpet), but no solution. I also made sure the power cable is "shielded" from direct contact with the case. But still that LOUD hum. Is it transferred through the tubing perhaps? I can FEEL the hum! Sheesh.

How can I get a quiet, non-vibrating pump going here?

Thx..

 

[paralazarguer]

Do what I just did. Take out all your case fans. Get an enermax dual fan whisper power supply. Use a stock cooler on your P4 and use asus Q fan which spins it completely inadibly except under load. The only thing you'll ever hear from your computer again is hard drive access.

 

[Lizardman]

Do a simple test i just thought up. Pick up your pump while its on. Does it make noise while its not touching your case. If not then maybe try locating it outside your case. Also see if it vibrates when you put a lot of pressure on it (squeeze it) some times that helps. Your problem is that your dont like the noise caused by the vibration of your pump. Maybe wood box for pump to absorb vibrations?

 

[dannybin1742]

is it screwed to the case i had the same problem, the way i solved it was to put neoprene under the pump and then drill holes just outside the base pump area and run zip ties around it and tighten it down.

mine produces almost no noise now

i can send you a picture if you want, just email me at dannybin@hotmail.com,


btw does anyone know how to link pictures to these forums? do you have to have your own website?

 

[grunjee]

Seems like I just saw this thread on AMDmb.com

Here's what i put there:

I sold my 1250 last week and replaced it with a 1048, so I've used both.

With both of them, I just put 'sticky tack' on the 4 corners of the base, and it works like a charm.

 

[dorkface]

Thanks for the replies guys.

I think I have been able to eliminate most of the direct vibration resulting from the pump touching the case. I bought a good size sponge, and cut out the shape of the pump, and half embedded the pump in the sponge. That seemed to reduced the hum significantly. But there is still vibration being transmitted to the case, probably both through the tubing, as well as simply through the air. If I put my case side back on (snug fit), the hum is restored in all its annoying glory because of the amplifying effect of the enclosed metal casing.

7757524...given that my case sits inside a cabinet (more hum), it does not have the greatest ventilation around and behind the case. My case temp would go through the roof.

Lizardman...exactly. The pump simply vibrates. And I simply can't stand it.

dannybin...I think my sponge method should also have produced the desired result...

grunjee...what's sticky tack? Anyway, I think I'd need more sound absorbing action...

So. Either I find myself a completely inaudible pump, or I go back to aircooling and write this off as a somewhat expensive failed project. @$%#**!

 

[paralazarguer]

given that my case sits inside a cabinet (more hum), it does not have the greatest ventilation around and behind the case. My case temp would go through the roof.

Yes, it would go through the roof. Mine did. I don't know why people are so obsessed with keeping their case withing 4 degrees of room temp. I used to run it like that and now it's really, really hot. Does it matter? Nope. I have a 533mhz overclock using the P4 stock cooler. I unplugged the fan on my geforce 3 and it's stable as a mofo. As long as the CPU doesn't go past 55 I'm not worried. Stable is perfect. Any cooler than that and you're wasting your time. Anyone who says it's to prolong the life of their components isn't like me. I go through parts so fast I don't care if the wear out in three years.

 

[ThisIsMatt]

Originally posted by: 7757524
Do what I just did. Take out all your case fans. Get an enermax dual fan whisper power supply. Use a stock cooler on your P4 and use asus Q fan which spins it completely inadibly except under load. The only thing you'll ever hear from your computer again is hard drive access.

Originally posted by: 7757524

given that my case sits inside a cabinet (more hum), it does not have the greatest ventilation around and behind the case. My case temp would go through the roof.

Yes, it would go through the roof. Mine did. I don't know why people are so obsessed with keeping their case withing 4 degrees of room temp. I used to run it like that and now it's really, really hot. Does it matter? Nope. I have a 533mhz overclock using the P4 stock cooler. I unplugged the fan on my geforce 3 and it's stable as a mofo. As long as the CPU doesn't go past 55 I'm not worried. Stable is perfect. Any cooler than that and you're wasting your time. Anyone who says it's to prolong the life of their components isn't like me. I go through parts so fast I don't care if the wear out in three years.

Do you enjoy giving poor, unhelpful advice? Is it one of your hobbies and if so, have you considered joining the pro circuit because you're really good at it.:disgust:

 

[dorkface]

Okay. So what is the likelyhood that the Eheim simply has to work too hard? I'd be willing to try a different selection of components. I have a BIX "laying around", so I could go to a 1/2"ID system with e.g. the MAZE blocks. I suppose that would be beneficial to the flow, but would it help reduce the hum/vibration? Or do I need to look for a different pump?

 

[Lizardman]

If you have some time try out your theory. Drain all the water out of your system and see how loud the pump is when its just moving air.

 

[dorkface]

Without water it makes a TON of noise, like the impeller is just flappin' around in there. I can easily move the impeller from its axis, kinda like that centrifuge effect when it has too much load on one side.

 

[WarCon]

You could try suspending it on bungee cords. Should remove any noise transfer to your case.

It will still make noise though............ Just not as much.

You could take sound matting and cover the pump (but it will probably get warm).

I am sure there are quieter pumps out there. They probably won't have the same flowrate, but I don't think thats as important as your radiator and fan on your radiator anyway.

 

[Grimner]

Just my very humle thoughts as a theoretical water-cooler (looking into it, haven't done the investment yet), so this might be complete rubbish:

Vibrations travel in water.
It strikes me that vibrations from the pump might easily be transfered to the heatsink(s), but especially to the radiator.
Might explain why it still hums after you have muffeled the pump - could it be the radiator is screwed tightly to your case; water to metal, metal to metal, metal to air?


Only airing a thought from my water-meditations - fire away

 

[dorkface]

In the mean time I have glued the impeller to the shaft. It still vibrates, but that could also be caused by too much backpressure. I am switching to 1/2" tubing this weekend, let's see what that does...

Grimner, I think you are right, I bet vibrations get transmitted through the water and tubing, as will as simply through the air!

 

[WarCon]

After giving you advice about pumps, my pump got jealous that I was considering another and died yesterday............

 

[dorkface]

The B*%@H! Want to buy mine? [grin]

 

[WarCon]

Nah I was thinking about getting a "quiet" pump...........