JBJ ATO Fail-Safe Timer Adjustment

markbeta

New member
I'd like to know if anyone knows the details of adjusting the fail-safe timer on a JBJ ATO controller?

I know that the time duration that the pump can be switched ON can be adjusted by opening up the controller and turning a dial mounted on the circuit board. I know that factory default setting is 3 minutes and 45 seconds, and the maximum setting is 14 minutes.

What is the minimum setting? What duration of time corresponds to one click of the dial?

My controller is not accessible enough for me to easily find the answers to my questions on my own. Thanks for any help.
 
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