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OPW Installation , Operation , and Maintenance Manual , Page 73 Executive Order VR- 1024 signal that the tank is full . Close transport delivery valve HOW TO LOCATE THE POSITION OF THE 61 SO AT li and drain hose into tank before disconnecting any hose 95% TANK CAPACITY �t fitting . ( Shut-off points can be adjusted to any capacity to Overfilled Tank : Failure of the hose to drain after clos- comply with AHJ Requirements) in the deliver valve signals an overfilled tank . Do Not disconnect any delivery hose fitting until the liquid level The length of the upper tube and the placement of the in the tank has been lowered to allow the hose to drain 61 SO valve body determine the shut-off point . Follow into the tank . ing the standard instructions for the OPW 61 SO will pro- vide for initial shutoff at 95 % . In all cases , the upper € WARNING tube length must be a minimum of 6 - 1 /2" plus the In the event you are splashed with fuel remove wet length of the riser pipe . All length measurements are in clothing immediately . Skin contact with gasoline inches . can cause chemical burns and may result in yl Inhalation of vapors that maybe fatal . Never go INSTRUCTIONS inside confined areas after being splashed and never go near ignition sources . 1 ) Find tank capacity ( in gallons) from tank calibration chart provided by tank manufacturer . IMPORTANT 2 ) Calculate 95 % of capacity , Determine if the underground storage tank is equipped with a ball float vent valve , as illustrated in Figure 16 . In 3 ) Locate the 95 % volume number on the tank calibra- all systems , the shut-offpointofthe61SOmustbe tion chart . reached before the ball float reduces flow to ensure 4 ) Find the dipstick number ( X) which corresponds to proper overfill valve operation . the 95 % tank volume . And , find the dipstick num - TOOLS NEEDED FOR INSTALLATION AND ASSEM- ber ( Y ) which corresponds to the 100 % volume . BLY : I, 5 ) Subtract the dipstick number (X ) from the tank di- € 1 . Drill ameter ( Y) to find the upper tube reference number � 2 . A sharp 1 /8" pilot drill bit (Z) . r 3 . A sharp 5/ 16 " drill bit ( Y ) - ( X ) _ (Z) 1 4 . Tape measure 6) Subtract 2 from (Z) to find the upper tube depth c 5 . Hacksaworcut- off saw , finetooth ; 24teeth/inch ( C ) , 6 . Fine half round file (Z) - 2 = C T Screwdriver - Phillips blade 7 ) Is C less than 6w1 /2 " ? l €x 8 . 1 /2 " Wrench or socket I 9 . Two- part sealant ( Supplied ) NO Upper tube length is C plus the distance from 10 . Torque Wrench the top of the Face Seal Adaptor installed on the WARNING riser pipe to the inside , top lip of the storage r tank (A) . I Using electrically operated equipment near gasoline or gasoline vapors may result in fire or explosion , Upper Tube Length = C + (A) causing personal injury and property damage . Check to assure the working area is free from such YES Upper tube length is 6 - 1 /2 " plus the riser pipe hazards , and always use proper precautions . measurement (A) . IMPORTANT : The figures in this installation and maintenance instruction may contain vapor recovery Upper Tube Length = 6- 112 " + (A) equipment (including model numbers ) that is not certk tied by the CaliforniaAir Resources Board ( GARB ) fora NOTE : You must find the actual tank capacity num - specific Phase I Vapor Recovery System . Pleasereferto ber that correlates to the 6- 1 /2" + (A) depth for the Exhibit 1 of the appropriate CARB Phase I Executive Or- station records . This number may also be used for derfor a list of certified Phase I Vapor Recovery System the purposes of calibrating an electronic tank level Equipment . system .