Thanks for coming back. I have tried googling. Instructions just say connect to L N and earth. The pump came with the wires attached in these positions.
I'm puting in a substitute grundfos pump 15/60 from China but it doesn't have L N and earth terminals. There are six wired terminals as follows (see image):
1C2 N L5 4 3C1 and 2
Can someone tell me where live, neutral and earth go please?