Ted thanks for reply, our controls at the moment are simply timers and contactors. I have been unable to find a simple sensor that detects if flow ia present or not. This is why I came to this forum with the question. I am looking currently in the catalogs of Schneider electrical and Grundfos Pumps.
Looking for some ideas in troubleshooting and fixing a natural pool system.
I have a system with 2 centrifugal pumps sucking from a pond and pushing water 30m uphill to circulate back down through various ponds and gardens.
Pumps are 1.5kw and 2kw multistage at 4-6 M3/hr
To help pump life pumps...
