Clean Water Only: Peripheral vortex pumps are designed strictly for clean fluids. Any abrasive particles, sand, or debris will rapidly erode the brass impeller and clog the narrow chambers.Do Not Run Dry: Operating the pump without water in the casing will destroy the mechanical seals and overheat the motor. Always prime the pump body with water before switching it on for the first time.Thermal Overload Protection: Most modern variations include a built-in thermal sensor that cuts power automatically if the machine begins to overheat, protecting the copper windings from burning out.