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3 . If both , the first and second pump <br /> fail to hold the wastewater level down , <br /> the water level will reach the third <br /> stage of the Kari float switch which <br /> energizes the alarm. <br /> 4 . If both pumps operate correctly, the <br /> level of the wastewater will drop to . <br /> the bottom of the tank and the Kari <br /> float switch de-energizes . <br /> If the 450 gal . poly-liner tank leaks or <br /> overflows the wastewater flows to 01ca <br /> secondary containment. If the wastewater <br /> continues to rise , the Kari float switch <br /> (Model : 2A) energizes the sump Dump to <br /> pump the wastewater back into the 450 <br /> gal . poly liner tank. <br /> 1 . 2 Maintenance Route Frequency: Weekly <br /> - Inspect 450 gal . tank for leaks and <br /> damages . Clean tank if necessary. <br /> - Inspect foot valves , self priming <br /> centrifugal pump, and check valves for <br /> leaks , damages , and clogs. <br /> - Inspect Kari float switch for <br /> obstruction of float. <br /> - Inspect sump pump for damages and <br /> clogs . <br /> - Inspect sump pump' s float for limiting <br /> obstructions . <br /> 1 . 3 Troubleshooting Symptoms/Causes <br /> Symptom Typical Causes <br /> 450 GAL-. POLY TANK OVERFLOWS <br /> Alarm "ON" , self 1 .Make sure both rinse lift station <br /> priming centrifugal pump switch' s on electrical panel is <br /> pump operates but no in the "OFF" position. Inspect and <br /> or low liquid flow. clean basket strainer and foot valves <br /> for clogs . Replace basket and foot <br /> valves if necessary. Fill pump with <br /> clean liquid and try priming again. <br /> 2 . If pump does not operate OK, rlr: IT <br /> for air leaks in foot valve , pomp <br /> housing , and piping. <br /> 3 . If there are no air leaks , replace <br /> pump for repair. <br />