Tunze Osmolator question ?

pk-sd · 05/20/2012, 12:47 PM

Just upgraded from JBJ top-off to a tunze osmolator. Noticed there are no sensors for freshwater reservoir.

How does the pump shut down if the water level in the reservoir is too low ?

AGYDAL · 05/20/2012, 01:05 PM

The pump will run dry for a set amount of time (a few minutes), it will eventually shut off once the magic eye thing in your sump/tank registers that the water level is not rising. Once the pump shuts off due to lack of water, it will not attempt to run again, the light on the controller box will start flashing to let you know there is an issue that needs to be taken care of.

This will also happen if there is an air bubble in the osmolator pump, the pump is very weak and sometimes it cannot prime itself.

It is not a good idea to let the pump run dry, even with the set timeout there is still the possibility of permanent damage to the pump.

There is also a shut off for if the pump runs too long, I think the time out is around 10 minutes.

I have Osmolators on two of my tanks and I love them.

pk-sd · 05/20/2012, 01:54 PM

Thanks

I don't think I would ever let my water level go down so that pump will have to run dry....but that said, its good to know that pump will not run till it burns out.

I think I will add this device to protect the pump.

http://autotopoff.com/products/SS1/

AGYDAL · 05/20/2012, 02:56 PM

This might be a "do as I say, not as I do" type answer...but the replacement pumps are less than $25 to replace. The Osmolator on my nano runs dry about once every 6-8 weeks, I've not had any issues with the pump in the year and a half since I bought it (used).

05/20/2012, 12:47 PM	#1
pk-sd Registered Member Join Date: Jan 2006 Location: San Diego, CA Posts: 203	Tunze Osmolator question ? Just upgraded from JBJ top-off to a tunze osmolator. Noticed there are no sensors for freshwater reservoir. How does the pump shut down if the water level in the reservoir is too low ? __________________ 160g Starfire peninsula with Vertex illumina LEDs http://www.reefcentral.com/forums/showthread.php?t=2078022 Current Tank Info: 160g mixed reef, 50g mixed reef(RIP), 30g office reef(had to take it down)

05/20/2012, 01:54 PM	#3
pk-sd Registered Member Join Date: Jan 2006 Location: San Diego, CA Posts: 203	Thanks I don't think I would ever let my water level go down so that pump will have to run dry....but that said, its good to know that pump will not run till it burns out. I think I will add this device to protect the pump. http://autotopoff.com/products/SS1/ __________________ 160g Starfire peninsula with Vertex illumina LEDs http://www.reefcentral.com/forums/showthread.php?t=2078022 Current Tank Info: 160g mixed reef, 50g mixed reef(RIP), 30g office reef(had to take it down)

05/20/2012, 01:05 PM	#2
AGYDAL Registered Member Join Date: Dec 2010 Location: SoCal Posts: 291	The pump will run dry for a set amount of time (a few minutes), it will eventually shut off once the magic eye thing in your sump/tank registers that the water level is not rising. Once the pump shuts off due to lack of water, it will not attempt to run again, the light on the controller box will start flashing to let you know there is an issue that needs to be taken care of. This will also happen if there is an air bubble in the osmolator pump, the pump is very weak and sometimes it cannot prime itself. It is not a good idea to let the pump run dry, even with the set timeout there is still the possibility of permanent damage to the pump. There is also a shut off for if the pump runs too long, I think the time out is around 10 minutes. I have Osmolators on two of my tanks and I love them.

05/20/2012, 02:56 PM	#4
AGYDAL Registered Member Join Date: Dec 2010 Location: SoCal Posts: 291	This might be a "do as I say, not as I do" type answer...but the replacement pumps are less than $25 to replace. The Osmolator on my nano runs dry about once every 6-8 weeks, I've not had any issues with the pump in the year and a half since I bought it (used).