Jay,
Running a Grundfos pump on low voltage also means running it on limited
input power (the current can't/won't exceed a certain amount). It is
easy to end up with a pump that won't operate all of the time, or only
for a limited amount of hours every day. A pump that has a speed control
is a better choice; it will operate more reliably and for more hours
every day.
Lorentz pumps are still available in the U.S. The new controller
doesn't have the speed adjustment built in, but there is an option to
order a speed adjustment for the controller. The speed can also be
adjusted with a smart phone app.
I believe that your distributor for Lorentz Pumps is GenPro Energy
Solutions.
Kent Osterberg
Blue Mountain Solar
On 6/15/2021 2:15 PM, jay wrote:
Does anyone have or know where I can get the pump curves with voltages?
I’m trying to limit flow by lowering the voltage, which I know works, but I
can’t find the output vs voltage charts.
And does anyone know if Lorentz is still active in the USA?
The last time i checked their controller had the ability for flow/speed
adjustment.
Thanks
jay
peltz power
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