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c) (,WCW 5 C0 (2N IAI �- / 2.. V X ' DW T HOW TO LOCATE THE POSITION OF THE 71 SO AT 95 % TANK CAPACITY / Measuring Stick The length of the upper tube and the placement of r the 71 SO valve body determine the shut-off point. Fallowing the standard instructions for the OPW 71 SO will provide for initial shutoff at 95% . In all cases , the upper tube length must be a minimum of ! + 6- 112" plus the length of the riser pipe . All length I measurements are in inches . {� Riser Pipe with Face INSTRUCTIONS (A} Seal Adaptor To Tank 1 . ) Find tank capacity (in gallons ) from tank Top (I . D. ) ToTank calibration chart provided by tank manufacturer, B0 tom Ili bZ7 t 2 . ) Calculate 95% of capacity. /'l At 6- 1 /2" 3. ) Locate the 95 % volume numb r on the tank calibration chart. IM / O 4 . ) Find the dipstick number (X ) which corresponds Figure 1 to the 95% tank volume . And , find the dipstick number (Y) which corresponds tohe EXAMPLE 100%volume , FOX 70 i� 1 . ) For an Owens-Corning Model G-3 Fiberglass® 5 , } Subtract the dipstick number (X) from the tank Tank Calibration Chart:Tank Capacity - 10 ,000 gall. , nominal 9 ,403 gal . diameter (Y) to find the upper tube reference NOTE : Use actual 0 aconly number (Z} . ftp y (Y ) - (X) 2 . ) 95% of actual tank capacity = 0 .95 x = 6. ) Subtract 2" from (Z) to find the upper lube depth 9403 gal . 8933 gal . (C )• (Z) - 2" - C 7 7 3 . ) The closest number which is less than 8933 gal , Is 8910 gal . Choosing the closest number less than 95% of actual capacity ensures that the 7 . ) Is C less than 6- 112" ? D initial shutoff will occur when the tank is no more NO Upper tube length is C plus the distance than 95% full . from the top of the Face Seal Adaptor 4 . ) The calibration chart reading of 8910 gaig installed on the riser pipe to the inside , top corresponds to a dipstick measurement of 82" s lip of the storage (A). 5. ) Dipstick number (X) = 82" Upper Tube Length = C + (A) Tank diameter (Y) = 92" YES Upper tube length is 6- 112" plus the riser (Y) - (X) = (Z) (92 "- 82 = 10" } pipe measurement (A) . q = 10 Upper Tube Length = 6- 1 /2" + (A) 7 . ) {Z) - 2" = C { 10" - 2" = 8 ") C = 8" NOTE : You must find the actual tank capacity 7 , ) Is 8" less than 6-1 /2"? number that correlates to the 6-112" + (A) depth for the station records . This number may also NO Measure the distance from the top of the be used for the purposes of calibrating an FSA-400 Face Seal Adaptor installed on the electronic tank level system , riser pipe to the inside , top lip of the storage tank and obtain measurement (A) . ® Registered T. M. - Owens Corning Fiberglass Corporation Upper tube length = C + (A) 64