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Al DR HOW TO LOCATE THE POSITION OF THE 71 SO AT 95% TANK CAPACITY V , z ) llll �eari is k The length of the upper tube and the placement of - - --the 71 SO valve body determine the shut-off point. Following 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 ,l 6- 1 /2 plus the length of the riser pipe . All length p 9 p p 9 Riser Pipe 4 measurements are in inches . I INSTRUCTIONS with Face (A) Seal Adaptor To Tank Top ( LD . ) ( B ) 1 . ) Find tank capacity ( in gallons ) from tank To Tank calibration chart provided by tank manufacturer. Bottom 2 . ) Calculate 95 % of capacity. - C� l � 6- 1 /2" 3 . ) Locate the 95% volume number on the tank 111 calibration chart. 95� Figure 1 4 . ) Find the dipstick number (X) which corresponds to the 95 % tank volume . And , find the dipstick number (Y) whiF�f��grresponds to the EXAMPLE 100 %volume . 5Y C t S 1 . ) For an Owens-Corning Model G-3 Fiberglass® Tank Calibration Chart : 5 . ) Subtract the dipstick number (X) from the tank Tank Capacity - 10 , 000 gal . , nominal 9 ,403 gal . diameter (Y) to find the upper tube reference NOTE : Use actual capacity only number (Z) . (Y ) - (X) _ (Z) 2 . ) 95 % of actual tank capacity = 0 . 95 x = 6 . ) Subtract 2" from (Z) to find the upper tube depth 9403 gal . 8933 gal . ( C ) • 3 . ) The closest number which is less than 8933 gal . (Z) - 211 = C 7 5� Is 8910 gal . Choosing the closest number less than 95% of actual capacity ensures that the 7 . ) Is C less than 6- 1 /2 "? 109 initial shutoff will occur when the tank is no more than 95 % full . NO Upper tube length is C plus the distance from the top of the Face Seal Adaptor 4 . ) The calibration chart reading of 8910 gal . installed on the riser pipe to the inside , top corresponds to a dipstick measurement of 82" . lip of the storage (A) . 5 . ) Dipstick number (X) = 82" Upper Tube Length = C + (A) Tank diameter (Y) = 92" (Y ) - (X) _ (Z) ( 92 "- 82 " = 1011 ) YES Upper tube length is 6- 1 /2 " plus the riser (Z) = 10 " pipe measurement (A) . Upper Tube Length = 6- 1 /2" + (A) 7 . ) (CZ) -8;' = C ( 10" - 2" = 8 ") NOTE : You must find the actual tank capacity 7 . ) Is 8" less than 6- 1 /2 "? number that correlates to the 6-1 /2" + (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