Reply To: Johnson RDSL-21 mercury Switches

[Tom Alexander]

Lindy 46: Good eyes! Thanks for that. You are right and for subsequent runs I did raise the water level. For this first run I did have a pressure water (Municipal water supply) source feeding into a screwed on plate on the intake to make sure I had water into the supply side of pump. While I don’t think this ‘proves’ a water pump is working sufficiently on its own, for the  first approx 10 minutes of running I did keep the hose pressured up and connected just for my peace of mind. Then I disconnected and the pump has proved since to be working well.

Thanks  Tom Alexander