New 6015 loud vibration depending on orientation

[Essense]

First thing I noticed when I opened up the box was how solid this little pump felt. Then I saw one of the mounting plugs of the holder that snaps into the magnet was broken. Not really a big deal to me.

After running the pump it became apparent to me the noise was more than normal. I did a bit of testing. If I run the pump with the power cord facing up I get a strong vibration noise. If I remove the pump from the holder I can get it to be silent depending on how I orient the pump, but it is loud in most orientations removed from the holder as well as in the holder. I'm going to give it a night, but wanted to get thoughts about what level of noise is intended from the pump. I'm hearing sound from the 6015 that is half way between silent and a annoying loud hum/vibration from an air pump. I was expecting much closer to silent.

The pump otherwise is 10/10 for a 24g nano.

 

[Essense]

I've also found the pump will start and stay in reverse flow until power toggled. Thought these had an autocorrect for reverse flow startup.

 

[rvitko]

If the pump is in a corner where the intake grating is obstructed by a side wall, that can cause both noise and backward operation.

Make sure the 3M Bumpons are installed on the magnet, they are on a thin strip of wax paper or clear plastic and are not preinstalled.

It should be fairly quiet, noise will generally be from hard surface contact and vibration, it is aggrevated if the glass is thin, less than 1/8".

I would check the propeller, these are cut on a lathe to size for US 60Hz and if one blade is longer than the other, that is another potential cause for both problems and we can easily send a new drive unit.

What should happen is that on start up, the prop spins backwards, flies forward, hits a stop on the front cover and then falls back and syncs up spinning the right way. A backwards spin can be caused by a broken/damaged prop, physical obstruction, including sand in the pump, or rapid on and off cycles, wavemaker use is completely out of the question and voids the warranty. It can also be caused if the front cover of the pump is not fully engaged, check that the gap is even all the way around where the prop housing meets the motor.

I am happy to also replace the clamp.

 

[Essense]

Great info, thanks. My initial thoughts were prop or sand in there as well. I did a thorough fresh water wash but didn't resolve. Not on a wavemaker.

I'll try once more to check for resolution with your information. If I can't get it , then is it ok to send you a PM for prop replacement considerations?

Thanks

 

[rvitko]

I would open the pump and remove the drive unit and then rinse it out and inspect the blades. Of course, shoot me a PM.