Tunze 3152 osmolator nano not working-need help troubleshooting.

[glb]

I've had this ATO for less than two years and it seems that the pump is out. The performance was spotty for a while then it just stopped working. Has this happened to anyone else? If so, were you able to fix it yourself or did you have to replace parts? Any help is greatly appreciated!

 

[Daniel@R2R]

Is it just not coming on at all? What's it doing? #reefsquad

 

[Brew12]

Following for more info

 

[redfishbluefish]

I don't have one and not even sure if they use pressure sensors or electric eye, but the first thing I'd do is clean that sensor component and start from there.

 

[AdamNC]

@rvitko

 

[Sabellafella]

I've had this ATO for less than two years and it seems that the pump is out. The performance was spotty for a while then it just stopped working. Has this happened to anyone else? If so, were you able to fix it yourself or did you have to replace parts? Any help is greatly appreciated!

Might have to get a new pump, i had the same problem a few years back.

 

[cromag27]

This is why I don't like the tunze atos. their pumps are garbage. nothing beats a quality peristaltic!

 

[glb]

I turn it on and I can hear something in the pump, but no water comes out. I'll take off the sensor and clean it, but from what I've read, the pumps on these don't last too long. At least they're only $25 to replace on Amazon. I cleaned the impeller a few times which was a temporary fix, but no more. I had switched to kalk in my ato water and wonder if that did it in. I'm back to using RODI only now. Where exactly is the sensor? I know it's up on the magnetic part but I'm not sure where. Thanks everyone.

 

[Dapperjman]

Sometimes air gets trapped - at least it has on mine and it wouldn't pump water. Turn it upside down under water to release any air and see if that helps.

 

[cromag27]

Kalk will get caked on all the parts. gotta chip it off everything.

 

[glb]

Kalk will get caked on all the parts. gotta chip it off everything.

I figured. Kalk was a mess. Now I'm using 2-part.

 

[robert.oakden.71]

Only a float sensor on the nano no optical eye

 

[Hack]

I have the same problem with mine. I hear the motor turn on - but nothing comes out. I agree - air gets trapped inside - happens every time I re-fill the container. Once I bang it on the side of the container - it starts working again. Not very reliable. Going to move to something else soon...

 

[bblumberg]

I have the same problem with mine. I hear the motor turn on - but nothing comes out. I agree - air gets trapped inside - happens every time I re-fill the container. Once I bang it on the side of the container - it starts working again. Not very reliable. Going to move to something else soon...

+1 on this. Trapped air makes the pump noisy and not pump water. One solution is to turn the pump upside down in the water (so that intake is up) and shake gently to remove trapped air. I have 2 of these units in my reefs and they work splendidly, unless I let the water run out. Then the "no pumping" problem inevitably occurs.

Bruce

 

[glb]

+1 on this. Trapped air makes the pump noisy and not pump water. One solution is to turn the pump upside down in the water (so that intake is up) and shake gently to remove trapped air. I have 2 of these units in my reefs and they work splendidly, unless I let the water run out. Then the "no pumping" problem inevitably occurs.

Bruce

I tried that once with no luck. I'll try again tomorrow!

 

[bblumberg]

I tried that once with no luck. I'll try again tomorrow!

It is not impossible that the pump is bad, but I'd try hard to get air bubbles out, shake it up and down, tilt from side to side (all under water of course), particularly when the pump is running. If this doesn't fix it, then a new pump might be needed. They are only about $30 or so including shipping.

Bruce

 

[bruinfoodie]

Thank goodness for this site, I swear sometimes I don’t know what I would do without it, I probably would have ordered a new pump already!

 

[BanZI29]

I have gone thru 3 pumps already. Everytime the pump does run but the pressure is not enough to get it to the tank. Its only about 3 feet from pump to top of the tank. It works for anout a month then just craps out. If I take.the hose and get it about level with where the pump is, it flows but, when i raise it up again, the flow stops. Tunzes are craptastic!