New Tunze 9410 dc loud grinding noise

[bluecard]

Hi Roger,

I need some advice. I purchased a 9410 dc this week and it is making a loud grinding noise. The noise goes away if I pinch the air line from the silencer to the skimmer. It will run pretty quiet for a little while and start making the noise again. I up'd my water level from 6.5 to 7 with no difference. It is also not generating hardly any skim. I turned it up to 100 percent with no results. I realize the skim could be part of the break in period, but I read most people run around 50 percent. The foam doesn't even get close to the top at that level. I took an audio clip of the noise and then pinched the line, so you could hear a difference. Not sure if the pump is faulty and I need to return the skimmer.
Thanks.

Jason

 

[rvitko]

The motor coil is misaligned and we need to replace the pump, I can send a new pump, can you email me a copy of the receipt? In general this skimmer would be run with the pump at about 30-40% power. The coil is too high so the impeller rubs the intake and is slowed and makes noise. email is Tunze at sbcglobal dot net.

 

[bluecard]

Thanks Roger! I sent my receipt along with a sound clip. The first 2 seconds is the noise and the last 3 seconds is after I pinched the airline. I will also mention my apex shows it pulling 15 Watts at max power, which seems low per the specs.

 

[rvitko]

The specs are wrong, it should be 15W, before we started making it we found a coil winding change that dramatically reduced the power consumption.

 

[bluecard]

Even better. Thank you for all your help.

 

[bluecard]

Thank you Roger! Everything is working great now.

 

[rvitko]

Awesome! I am happy to hear that!