brenjake
New Member
Hello I am trying to figure out how to wire a grundfos pump to the pressure switch. I have a 220 circuit red black and white with ground. The grundfos has three black wires and a green/yellow wire {ground?] Can you tell me what wire goes where? I have a square -D pressure switch mounted . I assume that the high voltage is the 220v diagram and the jumper bars
are in place as per diagram. So from the pump the L1 which is U1 on the diagram goes to L1 on the pressure switch ? And the L2 from the pump whish is V1 goes to the L2 on the pressure switch? Where does the L3 orW1 from the pump go to? Thanks for any help. Any kind of schematic would be a great help.