greetings gerardo ,, there are several reasons for team not to stop -the pressure may be poorly calibrated ,, if equipment only generates 30 psi and is calibrated at more pressure, it does not stop - remember that to fill the air membrane, the water tank must be empty or will not work ,,, once loaded with air you can fill it with water again ,,, _ Likewise if the water pump worked in a vacuum, that is to say if water damaged the mechanical seal ,, check if the check valve is working well ,, check if the baypas valve is closed and if the water tank that feeds the hydropneumatic has water enter brand and model of equipment review and comment