My new Tunze 9012 is noisy

[JamesZ]

Hi Roger, I disassembled skimmer according to your Vedio instruction. I removed the impeller, didn’t find anything in pump. The noise is still the same aloud. Can it be possible after more break in days? Thank you!

 

[rvitko]

I think if I wanted to upgrade I would look at the 9004DC, I just think the 9410 is too large and will skim inconsistently.

 

[Simon Cushing]

I think if I wanted to upgrade I would look at the 9004DC, I just think the 9410 is too large and will skim inconsistently.

I will enquire about the 9004Dc, thanks again for your input.

 

[JamesZ]

I run that too. Looks like way too much air going in. There shouldn’t be any bubbles coming out of the front either. Dial the air all the way off, it should start making a gurgling sound as it draws too much water in the intake, then crack the air valve just past the point where the gurgle stops. It should be visibly skimming water silently in the intake. It will start to gurgle again when the intake gets dirty or obstructed. Once you get a feel for it these are unbelievably good skimmers. The best small ones I have ever used. I own 5 com line skimmers as well, this 3rd generation is the best yet but a mother and a half to dissemble for cleaning.

Can you tell me about how many days the skimmer cup is full? I seems to find the point you taught me, the water is being absorbed into the grate.

 

[rvitko]

This is variable, I use the 9012DC at home, I am fortunate in that I test new ideas so I have a custom double height cup that was made by gluing two cups together after sawing off the base of one and the top lip of the other. Even this cup though I can fill in a day if I wet skim while carbon dosing which I do time to time if a test shows higher NO3 and PO4 but if I am skimming with a normal setting with the pump turned down to where I get a more dark iced tea then I get a week or so and the cup is filled to the normal height of a regular size cup. My general experience is that you don't really want to go much more than 5 days between cleaning the cup, as even if the cup is not full, the crud caked up in the tube starts to reduce how well the skimmer works. If you want to go longer, the holiday cup 9012.145 was what we made instead of the double heigh cup and it drains to a bucket, if you skim wet, the cake up of crud in the riser tube is much slower so then you can go longer between cleaning.

 

[JamesZ]

This is variable, I use the 9012DC at home, I am fortunate in that I test new ideas so I have a custom double height cup that was made by gluing two cups together after sawing off the base of one and the top lip of the other. Even this cup though I can fill in a day if I wet skim while carbon dosing which I do time to time if a test shows higher NO3 and PO4 but if I am skimming with a normal setting with the pump turned down to where I get a more dark iced tea then I get a week or so and the cup is filled to the normal height of a regular size cup. My general experience is that you don't really want to go much more than 5 days between cleaning the cup, as even if the cup is not full, the crud caked up in the tube starts to reduce how well the skimmer works. If you want to go longer, the holiday cup 9012.145 was what we made instead of the double heigh cup and it drains to a bucket, if you skim wet, the cake up of crud in the riser tube is much slower so then you can go longer between cleaning.

Got it and thanks!

 

[JamesZ]

Hi Roger, My 9012 kept very noisy after over 2 weeks. How can I get support about this issue? I’m in Canada. Thanks!

 

[rvitko]

I am happy to answer questions and try to diagnose it with videos and pictures of inside the unit (impeller, motor, etc), but the warranty service would be handled by Xenia North America, www.xeniainc.com

 

[JamesZ]

I am happy to answer questions and try to diagnose it with videos and pictures of inside the unit (impeller, motor, etc), but the warranty service would be handled by Xenia North America, www.xeniainc.com

Thanks, I will give you another vedio clip.

 

[rvitko]

I really need to see internals, just an external video won't give me anything new to go by, some details of the pump and impeller inside is what would likely help narrow it down.

 

[JamesZ]

I really need to see internals, just an external video won't give me anything new to go by, some details of the pump and impeller inside is what would likely help narrow it down.

Ok. I will disassemble and take vedios for your review. Thanks!

 

[JamesZ]

Hi roger,

I disassembled it now. Can you help see it?

 

[JamesZ]

And this frame seems a little different with what you showed in your instruction vedio.

 

[JamesZ]

From your vedio screen cut

 

[rvitko]

Was the pump not attached to the plate 9012.160? The two clips and the hole are designed to accept the pump and hold it in place, if it was not secured to this plate, that is the likely issue. https://www.tunze.com/US/en/product-search/details.html?user_tunzeprod_pi1[prodid]=9012.160

 

[rvitko]

That back post is only there to secure the pump in shipping, in use it does nothing, it has changed a few times, the earliest models don't have it at all. It can stay in but it is really only there to prevent shipping damage, on the oldest ones with nothing the pump would sometimes unclip and smash up everything inside the skimmer.

 

[JamesZ]

The pump was attached the plate 9012.160. I pulled it off.

 

[rvitko]

Everything looks right then, my assumption would be the impeller has some sort of defect and is out of balance or out of round and needs to be replaced.

 

[JamesZ]

It sounds sad to me. I will contact www.xeniainc.com for warranty first and update to you about the progress. Thanks so much!

 

[JamesZ]

Hi Roger

Thanks for [email protected]‘s help I had received and installed the new propeller they sent to me and been running for nearly one week. Unfortunately the noise is the same loud. Can you help see if the motor has defect, as the inside construction is very simple and no other parts can cause the noise? Can it get replaced? Thank you!