... 3, quiet 4, save costsSubmersible fountain Pump is with a a long pre-filter, sponger inside, which can ... injury.Warning1, Risk of electric shock is certain that it is connected only to properly grounding-type receptacle ... and try another outlet to ensure the pump is getting electrical power. 5, Check the pump ... impeller area. Turn the rotor to ensure it is not broken or jammed.8, Monthly maintenance ...