Need help with Laing D4.. humming and vibrating like crazy!
 

It just started happening in the middle of the night, and when it hums, it vibrates and the casing reverberates with it too!

What could have caused it?

Thanks.

How did you mount it? if its bolted directly to the case with nothing to absorb the vibrations then yeah it will do that.

Ive never actually used a D4 Rev1 but Ive heard they are a little on the loud side regardless.

Hmm.. it came with a sticky foam patch underneath it, so I used it to stick it onto the case..

I'm using a Lianli V2100 casing, and I just placed it on the block that is beside the PSU (PSU at the bottom for this case)

Thought that'd be a good location, but apparently no.... :(

The stranger thing is it worked silently for quite some time, then this humming started, that's what gotten me vexed.

My d4 is mounted with the included bracket, with sticky foam pad.

Inlet points up, outlet to the side, its screwed into the mobo tray of my lianli pc70..

Its not got any viabration.. only the humm which cant really be fixed..

Running it with a non-restrictive loop and at 7v helps a lot.. lower if you can...

Due to space considerations in my YY0221, I have mine mounted onto a velcro pad so I can move it out of the way when I want to do something on my motherboard.

Gel heelpads are your friend
 

Dr. Schols to teh rescue. (Great damping for sound/vibration) :D

If it just happened all of a sudden... try holding it.. see how much it vibrates. Should only vibrate slightly.

It could be the motor is defective and could be sticking. It's the first stages of a pump failure.

My pump started doing that and I added more foam and ignored it... I woke up one morning to find this...

http://img.photobucket.com/albums/v5...s/DSC00867.jpg
http://img.photobucket.com/albums/v5...s/DSC00868.jpg

That was once an Athlon64 3500+. The CPU melted into the socket. Both the motherboard and CPU were ruined.. but that's not all... the barbs on the blocks were plastic.... yep.. they melted and water went everywhere in my system while it was STILL ON.

AMD cpu's have a VERY poor thermal protection mechanism. But yeah... don't ignore it.

Holy crap!

Seems like I should get a T-splitters and have one more redundant pump!

Damn, would love to use that pic for people that don't want to set up RPM feedback!

How do you set up RPM feedback?

^ oh sorry, I meant for pumps like ours and the DDC.
Believe it or not, even when pumps have rpm feedback, many people do not set it up :(

Better to be safe then toast!

I'll see about designing a low cost flow meter, we have all the parts in stock that we would need. You would just plug it in any fan port, that way will be 100% sure you always have flow.

Will just use CSP-MAG magnets, hall sensor, and jeweled bearings with low rpm paddle wheel. Given very low drag of bearings, it should be fairly accurate.

What you all think?

Is it available yet? :)

How about instead of a paddle flow meter, use a spring-loaded lever that is pushed up against the side of the housing by the pressure of the water flowing by. This might create less restriction than a paddle, not to mention not requiring a bearing of any kind.

Just a thought. :)

http://www.flowmeters.com/products/i..._id=166#29_166
just a thought too :).
it's to be inserted into a T line.

At $340 each, they're a bit pricey, and I would need two of them...

True. 340 is way out there.
must be cheaper versions.
will dig around when i can.