Exactly...that's what they messed with it. On Thu, Jun 3, 2021, 5:56 PM Chuck McCown via AF <[email protected]> wrote:
> Systems I worked on like this had an alternator circuit that would make > two main pumps take turns each operation. > > I also worked on remote C.O. buildings that had dual HVAC systems. After > a power failure the generator would come on but it could not start both > systems at the same time. I had to put a cut out on one of the HVAC > systems to kill it if there was a commercial power outage. > > Unless you work with large motors, you have no appreciation for starting > loads. > > *From:* Jaime Solorza > *Sent:* Thursday, June 3, 2021 5:02 PM > *To:* AnimalFarm Microwave Users Group > *Subject:* [AFMUG] Fort Bliss lift station troubleshooting > > After going through the drawings and consulting with original design > engineer on this project installed in 2007, we found one issue right > away...the water company techs made some changes to try to get pump 3 and 4 > to run simultaneously...kept tripping breaker. > The system was designed for 600amps maximum but when pump 3 starts up it > goes above 600, drops and stays at around 204.x while working, then when > they turn pump 4, it starts up above 600amps and trips breaker. > The system was designed to work with pump 1, a smaller motor and pump 3 , > and pump 2, same as 1, works with pump 4. > On Monday, we will rewire to original design and make some changes to PLC > programming and relays....they need some better level transmitter installed > but that's another project. > BTW, the enclosure is water tight and under a canopy for added protection. > > > ------------------------------ > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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