Just rebuilt a Myers HJ50D. There doesn't seem to be any water leaks. Barely moving water. Won't build up enough pressure to trip pressure switch. Just replaced impeller, diffuser, seals, etc. Drawing shows a screen, but mine didn't have one when I disassembled it. Pump had good pressure and volume before impeller broke. It's in a 4 foot casement well that's only about 30 feet deep. Any suggestions?
Also, it's only pumping about 1.5 gallons per minute. The ejector is at the bottom of the lines dropped in the well with a foot valve attached to the ejector. Water level is about 10 feet below pump. House is about 20 feet higher than pump. The 1.5 gallons is from a faucet at the pump house.