5. Plug pump into the dry-running sensor’s female connector. Hydrostop Starting 1. Switch pump on. 2. Pull out push-button on dry-running sensor – pump starts. Hold push-button until pull on push-button lessens and it is held by the water pressure. The water pressure required in the tee fitting is at least 0.8 bar. At a lower water pressure the dry-running sensor cuts out. If the pump is stopped it needs to be started again as described above. Thus an operation under automatic control (e.g. time