6/13/2011 1:06 PM
I'm getting a VFD alarm as well as a pressurization alarm, twice now these alarms shut the pumps down. I think or thought it might be because of heat in the small enclosed pump station. (high evening temps), I set the max output from 600GPM down to 500GPM, still got both alarms but the station did not shut down. I have a 20HP pump ran by the VFD and my 2nd pump a 30HP controlled by an electronic butterfly valve.
Enough info for someone to weigh in? The alarms start about 30 minutes into an irrigation cycle.
Doug