What to do with Low Water Optical Sensor?

[aaronfelt]

I put a high and low water sensor in my sump return chamber. They both send off notifications for me; the high turns off the ATO in case it failed on and will turn off my DOS when I get that wired up. My low sensor used to turn off my COR20 return pump to save it but I had no hysteresis so it would just turn off the return, which would flood up again (no check valves, they fail) and then the pump would turn on again and lower. Now I could have just added delay, but this would just be a slower bounce loop. I was thinking perhaps I could just turn down my COR20 return pump speed. But still, left unattended, this would burn out my pump from sucking air eventually.

Question 1: What would code look like for my sensor LoWtr?

Question 2: Is there something smarter I could do here that would save my pump entirely?

All of this is assuming my ATO fails for any reason to top off (a leak on the system, runs out of top off, etc)

[zombie]

I would do this actually. This will run a reduced speed for up to 2 minutes and if the level is still low, it will shut the LowSumpLO VO to manual ON, which will hold the pump off until you intervene.


LowSump
Set OFF
If Switchname OPEN Then ON
Defer 000:10 Then ON
Min Time 001:00 Then ON

LowSumpLO
Set OFF
If Switchname OPEN Then ON
Defer 002:00 Then ON
Defer 000:10 Then OFF
When On > 000:02 Then ON

COR
(Existing code)
If OutputLowSump = ON Then X
If Output LowSumpLO = ON Then OFF


Email
(Existing code)
If Output LowSumpLO = ON Then ON

Sent from my SM-G965U using Tapatalk

[aaronfelt]

I would do this actually. This will run a reduced speed for up to 2 minutes and if the level is still low, it will shut the LowSumpLO VO to manual ON, which will hold the pump off until you intervene.


LowSump
Set OFF
If Switchname OPEN Then ON
Defer 000:10 Then ON
Min Time 001:00 Then ON

LowSumpLO
Set OFF
If Switchname OPEN Then ON
Defer 002:00 Then ON
Defer 000:10 Then OFF
When On > 000:02 Then ON

COR
(Existing code)
If OutputLowSump = ON Then X
If Output LowSumpLO = ON Then OFF


Email
(Existing code)
If Output LowSumpLO = ON Then ON

Sent from my SM-G965U using Tapatalk

Thanks, Zombie. I’ll try this now.