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Installation Starting the System and Completing the Installation <br />Starting the System and Completing the Installation <br />1. Do not start pumps unless ample product is in the storage tank. <br />2. Pump sufficient product through each dispenser to purge the entire system of air. If all air is not purged, the <br />computers may "creep" slightly when the dispenser switch is turned on, but no product has been dispensed. <br />3. On pumps equipped with built-in siphon, it is necessary to run the submerged pump at least 10 to 20 minutes <br />continuously to purge the air from the siphon manifold. <br />4. After the above checks have been made, the backfill can be completed and the manholes installed as shown <br />in Figure 10. <br />.---- 36.0" Diameter --- <br />-= 18.0" Radius --- <br />i <br />E i <br />v i-4.0" Minimum <br />i t <br />Iim <br />6" NPT riser with I "13° Max. <br />flange ordered ' riser length <br />separately --- <br />exec <br />C� <br />J <br />a a <br />r 4.0" <br />n1451-301-10.eps <br />Figure 10. <br />16 <br />,A" <br />Bury depth <br />Distance between center <br />line of pump motor and <br />centerline of fill pipe <br />should be 3 feet minimum. <br />Air locking of pump may <br />occur at distances less <br />than this distance. <br />i <br />n <br />