Pump is just too loud, can yo undervolt?

[zoob]

Also make sure that your tubing is "floppy" around the pump so that it doesn't transmit vibrations through your loop.

I have a DDC3.2 at 7V and with a short piece of tubing to my PA120.3 mounted on the floor, I hear a low hum resonating in my case. If I reroute it so it flops on the tubing, the sound disappears.

[kyle_L]

i have a ddc pump and i just folded up a sock and stuck it on that. fixed all noise and vibs.

[T.Goat]

What about sticking a little chunk of spare tubing under the pump? Partially compressed, would it stop the vibrations, or is it too stiff?

[element291]

Finally I'll have a use for the two sided sticky foam i bought a year ago!

[howpet]

You"ve isolated the pump from the case but have you isolated the nuts and bolts also. Try some rubber washers wherever metal contacts metal. Washers available @ hardware store eg. HD

[element291]

Thats wierd. I just stuck some of that sticky foam on the bottom of mine, its about a quarter inch thick pad, and the pump is pure silent. I dont even know my loop is running unless i touch the pump.

[donimo]

I loosened the nuts, much quieter, I will just ditch them completely after I find some foam tape...

[element291]

Originally Posted by donimo

I loosened the nuts, much quieter, I will just ditch them completely after I find some foam tape...

Canadian tire!

[SugarJ]

Originally Posted by SugarJ

I found that the tighter mine was mounted, the more vibration hum I got. It almost needs some slop so the rubber mounts can kill the vibration. I just got a piece of Petra's gel-stuff, I'm going to try that under the pump and just zap-strap it down.

Just a follow up, my pump is now almost silent after doing this. The zap-strap is probably not necessary, but I carry my box to my workbench quite often and didn't want the pump sliding around. So, +1 to gel-stuff!

[donimo]

Originally Posted by element291

Canadian tire!

I want black foam tape though, prolly end up painting the white stuff lol