Grundfos Garden - Page 6 - Recent Questions, Troubleshooting & Support

Has to do with volume and pressure. What are parameters?

WARNING YOU MUST PRIME THE PUMP FIRST about 3 gallons. if you don't it will burn up the shaft seal and slowly leak water into the motor.. need more help search your area for the pool pump repair guy and ask him for help you might be able to get the motor rebuilt, cost about $75.. pictures are a big help so have a few on hand ready to email.. Jay the pump guy in longwood Florida

Hi try a internet search for farnell they are world wide

that looks like a fun 1 to work on. i think you might have trash in your impeller that will cause a drop in pressure .. this one will take some time to work on.. go slow ! here is a break down

sounds like high pressure stop. increase screw in pressure regulator. or use more water.

Grundfos said the problem of on off every few seconds was air in the line. Then later admitted it was the control unit. After replacing two units in 2 yrs I replacedit with a standerd pump pressure switch.....Runs fine