So I had the power go out this morning for about 90 minutes. When the power came back on the both my COR 20's ran at 100% of their IQ level and would not respond to my manual pushing of the buttons to slow them down. This caused the return section of my sump to be lower water level than normal, which caused the ATK to pump more top off water than needed. The extra water wasn't a big deal, it dropped the salinity a 1/2 pt or so, but still was at reasonable levels.
When the APEX finally re-connected the COR's still would not slow down until I ran the IQ calibration. I didn't have to adjust the IQ points and accepted the previous high and low settings. After I did that the pumps returned to the proper % settings. However, the COR's were not pushing the right flow through the flow meters anymore. My main return COR 20 normally ran at about 40% IQ level, which is about 500 GPH. However, at 40% it was pumping under 300 GPH. I now have the pump running at 75% IQ to achieve the 500 I had before.
My other COR ran at about 40% IQ which is about 215 GPH through the UV sterilizer, but was running at about 310 GPH at the same 40%. I now have it at near 30% to get to 220.
Why didn't the pumps respond to my manual button pushes when the APEX was offline? Also, once back online why didn't the pumps maintain the flow they previously had at the same settings?
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