Disable DOS Shutoff

[DiZASTiX]

Does anyone know how to disable the safety shutoff mechanism for DOS? I'd like the DOS pump to continue to dose (top off) the sump until the sensor ATK1 is closed.

After a while of dosing, the DOS will shutoff, presumably as a safety precaution to prevent an OD or flood. However, I am using the DOS as an ATO, so sometimes it takes a while to top off. In these situations, the safety mechanism kills the DOS before it is able to fully top off. After a few times of this, the DOS will be "hard off." The fix is to switch the DOS to the ON or AUTO position, and then back to the AUTO position. Coding doesn't seem to work, as the DOS isn't meant for this use case:

Fallback OFF
Set OFF
If ATK1 OPEN Then ON
If ATK2 CLOSED Then OFF
Defer 000:05 Then ON
When On > 060:00 Then OFF
Defer 000:15 Then OFF

 

[Breadman03]

That is meant to prevent overheating the pump. I set mine up with a workaround. I'll grab some screenshots on my phone in a minute, but I set mine to dose about 2x my daily evaporation, but to shut off when my ATO or ATOE floats are triggered.

 

[DiZASTiX]

That is meant to prevent overheating the pump. I set mine up with a workaround. I'll grab some screenshots on my phone in a minute, but I set mine to dose about 2x my daily evaporation, but to shut off when my ATO or ATOE floats are triggered.

Thanks for sharing. What do ATO and ATOE correspond to? I'd assume the high water level for the sump and the low water level for the sump, but wouldn't you want:

Fallback OFF
tdata 00:00:00,1,18,6,2,2,148,130,6,62,2,28,11,0
If ATK_LO OPEN Then ON
If ATK_HI CLOSED Then OFF
Min Time 030:00 Then OFF

 

[Breadman03]

ATO=ATO low level float, ATOE=high/emergency shutoff.

My program keeps the water level at the low level float, and the Min Time keeps it from just bouncing on and off constantly. I chose to set my floats to be normally closed so that if any wires disconnect, my ATO will shut off.