g.mccormick
Lifetime Supporting Member
We have a used piece of water filtration equipment. Long story short, 2 motors/pumps that are currently on contactors. Pump1 needs to be sent out for repair. Pump2 runs good, but building water supply cannot keep up at 60hz. We are going to put a vfd on and control pressure.
I plan to use the vfd through the 2 contactors to alternate the pumps run time. I will have to figure out interlocking the contactors so that only 1 can be on at a time, and 1 has to be on for the vfd to come on.
Since I will only be running 1 at a time, I don't think I need to use overloads on the contactors correct? Any thing I should be looking out for on this?
Thanks
I plan to use the vfd through the 2 contactors to alternate the pumps run time. I will have to figure out interlocking the contactors so that only 1 can be on at a time, and 1 has to be on for the vfd to come on.
Since I will only be running 1 at a time, I don't think I need to use overloads on the contactors correct? Any thing I should be looking out for on this?
Thanks