Recently I purchased an Neptune Apex. In the event of a short power outage I would like to power the return pump only. The Apex is plugged into the batter backup. The additional power cord is plugged directly into the wall. This way the Apex will know when the power is out even if it is plugged into the battery backup. How do I go about programing the Apex to turn everything off except the return pump in the even of a power outage?