Automatic water change VS sensors

[Anthony Neto]

Hello,

I have a doubt about the sensors.
how many i need? 2 or 3?

-1 for top up
-2 for take the water from the sump
-3 for new water

Or

-1 for top up and new water
-2 for take the water from the sump

Thanks

[Anthony Neto]

some help?

[GHL Support]

For an automatic water change you generally need 2 sensors (one as minimum level and one as maximum level).
Furthermore you need two sockets on your Powerbar (one for draining water and one for filling water).

[Anthony Neto]

For an automatic water change you generally need 2 sensors (one as minimum level and one as maximum level).
Furthermore you need two sockets on your Powerbar (one for draining water and one for filling water).

So the top up sensor cant be use for maximum level?

[GHL Support]

Sorry, yes, this is possible.
The top up sensor can be used also as maximum level, i.e. you chose the setting: ATO & water change

[Anthony Neto]

thanks carolin
i probably have more doubth bit we see later.

[Anthony Neto]

I'm watching a video on youtube about the water change and i have a doubt, the video is Auto Water change and ATO Guide for Profilux (http://www.youtube.com/watch?v=E5hQ87zMkYI)

At minute 1:10 he says to select the maximum on-time and it seems very important, its because is not using a level sensor to stop the drain pump? or is just to make sure if the drain level pump don't stop it stop by the timer?

Thanks

[Antipodes]

I'm watching a video on youtube about the water change and i have a doubt, the video is Auto Water change and ATO Guide for Profilux (http://www.youtube.com/watch?v=E5hQ87zMkYI)
or is just to make sure if the drain level pump don't stop it stop by the timer?

Thanks

Yes Exactly right, make sure the maximum on time is longer than what it takes to actually actuate the lower float switch. If the float switch does not switch off pump because it is stuck then the max time will stop the water change and cause an alarm.

[Anthony Neto]

Hello there,

I already have the 2 sensors for the water change all is missing is setup on the plc.

So i have some doubts, lets start from the beginning and step by step.

1 - programming the timer on timer 3

->Switchmode - event start at 20.30

2 - Level, here i not sure if its ok

->operation mode - ATO & water change
->maximum on-time (i don't know yet)
-> Auto top-off - always active
-> automatic water change - activated through timer 3
-> used sensors for this control - Sensor 1 (ATO and the level for the fill with new water) Sensor 2 (is the sensor for drain water)

There is my doubt on the selection sensors

Lets stop here, lets resolve this first if is wrong

Thanks

[Anthony Neto]

ok its working thanks