loud pump

[coraline79]

Iwaki RLT 70 pump very loud. It almost sounds like a box fan. I bought it from bigkglen, and he had one on his tank that was silent. Any ideas on getting it quiet?

[RayAllen]

Did you just fire it up? How long has it been running. Could just need to work it self in. If you have a ball valve restricting water it will run louder as well.

[coraline79]

been running for about 2 hours. I turned it off and oiled it, then plugged it back up. It is moving water like a son of a gun, but just too loud to think. If it is going to be this loud, I am going to have to plumb it out the wall to my patio.

[Bill S]

How is it plumbed? What is it sitting on? These need to be mounted on something rubber, and if you have it hooked to hard plumbing, you need to re-think that. HD sells a rubber coupler that couples 2 pieces of pvc together. This makes a HUGE difference when plumbing to hard plumbing.

[coraline79]

I do have it hard plumbed, but the noise I am hearing is not the loud hum, its literally sounds like a box fan on high, but the noise isn't coming from the fan side, it comes from inside the plastic housing.

[caferacermike]

Might have a shell or something stuck in the impeller.

[jc]

I read that using hard pvc will increase the sound. What about using flex pvc? I use a mouse pad under my pump to absorb the vibrations.

[coraline79]

it has little rubber standoffs that seem to absorb all vibrations at the base, and I hear the hum associated with pvc, but I am more concerned witht he fan like sound. I will diassemble the pump and clean it and see what happens.