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' P_re-ssure S_ensor Installation Under Dispenser fnsta6atgo Steps 15. Get the contents of the pressure sensor drying tube kit (Table 2). Thread a tie wrap (item 3)through the slots in each of the self-adhesive mounts (item 4). Place the top mount against the large cap on one end of the tube and tighten the tie wrap until it is against the tube cap but you can still rotate the tube. Place the second mount against the other end cap of the tube, again pulling the tie wrap through the mount until it is against the tube cap but you can still rotate the tube. Remove the two soft plastic seals from each end port of the drying tube. Get the Tygon tubing (item 2) from the kit and attach one end of the tubing to one end of the drying tube. Slide the tubing onto the drying tube as far as you can (snug). Referring to Figure 1, position the drying tube vertically against the inside of the 1 dispenser with the open port of the tube down and above grade and estimate the length needed to loop from the top of the drying tube and over to the vent port (off center) of the Vapor Pressure Sensor. Cut the Tygon tubing at the estimated length. Remove the paper cover from the self-adhesive base of the two tie wrap mounts and stick the drying tube to the inside of the dispenser in the spot you selected earlier. Pull each of the tie wraps snug and cut off the excess. Attach the other end of the Tygon tubing to the vent port (off center) of the Vapor Pressure Sensor. ' NOTE: the down port of the drying tube must remain open and be oriented down as shown in Figure 1. 16. After the Vapor Pressure Sensor is installed, pressurize the tank ullage space and vapor piping to at least 2 inches WC and test for leaks using leak detection solution. ' 17. Replace lower dispenser sheet metal doors onto dispensers. Ei JAN I ' ENVI^ONIr`719 i *.L H'ALTH L�,