Jeff Rehling
Guest
Installed my Tunze Osmolator and sensors, but when i plug it in, it fills the sump for a bit and then alarms red "Too High". Not sure why. Pump is below the level of the tubing and the sensors seem fine.
Tunze ATO
- Thread starter Jeff Rehling
- Start date
Oakland Evan
Guest
When I first set this up same thing happened to me. It took me a minute till I realized I had the second sensor upside down.
Jeff Rehling
Guest
i took the sensor out and it was installed correctly
put it back in the sump and it's fine now
put it back in the sump and it's fine now
James Oh
Guest
I just actually installed 2 of them one in my biocube and one in my 40b and I have this same problem. I usually unplug my ATO during water changes and what not and when I plug it back in it'll just some times just start dumping water in till I get a too high water error.. this is happening on both. It only happens if I unplug it and replug it back in.
MolaMola
Supporting Member
After plugging in again, the Tunze ATO is supposed to pump for a certain amount of time. Are you using the Nano? I use regulars and nanos on different tanks and forget the volume for each. On two I had to switch the jumper inside the pump control box to change the fill time and it solved problems I had in both cases. You might consult the manual or troubleshooting online. A search of the Tunze forum on RC usually turns up my ATO issues and solutions.
Jeff Rehling
Guest
no, it's the full size one.
RandyC
Supporting Member
There is a dial inside the 3155 control box that allows you to change the voltage which allows the pump strength to be adjusted to compensate for smaller/larger tanks or needing more pump strength to account for additional head pressure. (See picture below)
Depending on the capacity of the compartment you are filling with RO/DI, I suspect that the initial priming that happens everytime you turn on the pump is enough to trigger the high sensor. I suggest you do one of the following
1. On the mangnet switch holder you can adjust the optical sensor height to increase or decrease the spacing between it and the high level sensor/float switch. Increase the delta in spacing between the two.
2. Decrease the pump strength as MolaMola suggested so that less water is pumped in during the initial power on. Note this will also affect the speed at which water is pumped into sump at all times.
3. Use the second magnet Tunze provides in the box to raise the level of the high water level float switch.
Depending on the capacity of the compartment you are filling with RO/DI, I suspect that the initial priming that happens everytime you turn on the pump is enough to trigger the high sensor. I suggest you do one of the following
1. On the mangnet switch holder you can adjust the optical sensor height to increase or decrease the spacing between it and the high level sensor/float switch. Increase the delta in spacing between the two.
2. Decrease the pump strength as MolaMola suggested so that less water is pumped in during the initial power on. Note this will also affect the speed at which water is pumped into sump at all times.
3. Use the second magnet Tunze provides in the box to raise the level of the high water level float switch.
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