Water Level Alarm 7607/2 questions

[Horst]

Roger:

I just purchased a Water Level Alarm 7607/2 and have a couple of questions.

First, how many "consumers" can I connect? In the event of a flood or leak, I would like to shut off an Iwaki MD70RLT, an Arctica Titanium Aquarium Chiller DBM250 1/3hp, an Osmolator Universal 3155, a couple of heaters, and possibly my skimmer's pump (a QuietOne). Would this overload the unit if I connected all of these devices to a powerstrip and plugged the powerstrip into the 7607/2's "switched socket outlet" (7607.200)?

Second, I noticed that you mentioned in a few posts regarding the 7607/2 that " If the tank runs high it shuts off the return and sounds an alarm. If the sump runs high it sounds an alarm only." Pages 34 and 35 of the manual for the unit talk about switching off all connected devices whenever any of the sensors are activated. Can you please clarify what happens when any of the "too high sensors" are tripped? I want to make sure that if I place one of the too high sensors in my refuge, it will turn off the Iwaki main pump if the fuge starts to overflow.

Thanks for your help.

 

[rvitko]

When the too low sensor in the sump goes off it stops the pumps. Too high in the sump and it stops the pumps, too high in the sump and it is just an alarm, at least that is how the 7607 worked, I haven't used a 7607/2 personally but outside of a fancier display it isn't really any different. Logically, shutting off the pumps when the sump id high is only going to make it worse. The US version can switch 900W at 115V so the chiller is really the only question. I might suggest putting the heaters in the tank as then you won't have to worry about this and I would generally remember what we call the 4 out of 5 rule at Tunze. If 4 of the 5 conditions for survival are met- i.e. you still have flow, light, correct temp and specific gravity, the animals will likely not die because the skimmer and other filter components stopped working. For this reason we never recommend placing a heater in the sump or using a heated filter- when the filter dies you are now less two critical life support systems and the condition is much graver.

 

[Horst]

Thanks for the suggestion--I like the Tunze 4 out of 5 rule. On the other hand, even if I put my heaters in the tank, I would still be overloading the Water Level Alarm 7607/2 by plugging in the pump and the chiller. My main circulation pump also feeds my chiller, so I have to figure some way to turn off the chiller if the pump is shut down. Do you have any ideas how I could do this other than by installing another 7607/2 and plugging the chiller only into it?

 

[rvitko]

I don't have a solution. They don't give wattage on the web site but they do give amps so we can assume the wattage is a max of 860w (depends on power factor of the compressor which is likely below 1 so watts would be lower). Outside of downsizing the chiller and pump I see no other way, you will have to find another system.