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Fig. 5: Ring without <br />Usable Screw Insert <br />Fig. 7: Support Plate Aligned Over Screw Holes <br />If pipe cannot be centered under plate then <br />a 1" deep sump will give optimum water <br />flow to the pump. If the pipe can be <br />relatively centered NO SUMP is required. <br />CONCRETE INSTALLATION INSTRUCTIONS <br />flow to the pump. If the pipe can be relatively <br />centered NO SUMP is required. (Fig. 7). <br />Note: Suction Safety Standards require that main drain <br />grates used to cover concrete sumps, must have the <br />suction pipe cut at least 1 1/2 times the pipe diameter <br />behind the drain cover. This is to allow room for even <br />water flow through all drain cover holes. This is not <br />necessary with the SDX drain because the Patented <br />design provides uniform suction regardless of pipe <br />location. However, if the pipe is too close to the surface <br />and off center, this may restrict water flow to the pump, <br />reducing hydraulic efficiency, but this does not pose a <br />suction safety hazard. <br />5. Attach the drain cover support plate to the pool or <br />spa surface with the appropriate screws, fasteners, <br />and spacers as described in 3 on Pg 4 (Fig. 8 or 9 <br />-- see Pg 6), <br />ONCE INSTALLED, BE SURE THAT THE DRAIN <br />COVER SUPPORT PLATE IS FIRMLY IN PLACE <br />AND CANNOT BE PULLED OUT OF THE POOL <br />OR SPA SURFACE. IF THE DRAIN COVER <br />SUPPORT PLATE IS NOT FIRMLY IN PLACE, RE- <br />READ THESE INSTRUCTIONS AND TRY <br />ANOTHER INSTALLATION METHOD (PERHAPS <br />3E ABOVE) (FIG. 5). <br />WARNING: FAILURE TO SECURELY FASTEN <br />BLACK SUPPORT PLATE CAN RESULT IN <br />INJURY OR DEATH. <br />Fig 7a: SDX over suction outlet with no sump <br />ill WO 111 1 1 ' .111 i <br />.0.0•41., 00F.I. . 111 , <br />I ll IFIE=, <br />For technical assistance call 1.800.621.5886 or contact your regional representative <br />6