An antiquated 2-inch manual bar screen allowed inorganics smaller than a bed sheet to enter the Bell Road Lift Station in Sun City West, Arizona. Material routinely clogged the four 250 hp horizontal slurry pumps from KSB.At the headworks 5 miles away, the flow split over two 1/4-inch bar screens. Smaller material slipping through them clogged the in-basin mixers. “We fought this problem for years,” says Jesse Black, senior operator for owner/operator Epcor Water. “The station was built in 1979 and is one of the oldest in the area.”Replacing the 30-foot-deep bar screen would be expensive. The prep work alone
