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2.2 Install a '/4 inch full port ball valve (ball valve) and rotor flow indicator Grainger Model <br /> 1AMD7 (or equivalent). The rotor flow indicator provides a visual indication of fuel flow <br /> when evacuating the Liquid Condensate Trap. Install this equipment so that it can be <br /> viewed from outside the sump. See Figure 10. <br /> Figure 10 <br /> ow Indicator <br /> s� <br /> t .. <br /> ty <br /> 3. With the troubleshooting equipment installed perform the following procedures: <br /> a. With the ball valve in the CLOSED position fill the Liquid Condensate Trap with gasoline <br /> using the same method used in the Liquid Condensate Trap Compliance Test Procedure. <br /> The liquid sensor should be approximately 2 inches from the bottom of the Liquid Conden- <br /> sate Trap. Start the turbine pump connected to the Liquid Condensate Trap if it is not al- <br /> ready running. <br /> b. With the ball valve CLOSED, check the vacuum gauge and verify it is reading between <br /> 16 to 28 inches Hg of vacuum. If you do not have the correct amount of vacuum then <br /> look for a vacuum leak in the system. Check for a blocked in-line filter or syphon jet. <br /> See the table titled "If You Experience the Following Conditions". <br /> c. OPEN the ball valve and watch for rotation of the rotor flow indicator. Rotation of the <br /> rotor flow indicator will indicate the flow of gasoline. The rotor flow indicator will not rotate <br /> at a high speed and will not rotate at all if no liquid is flowing through the indicator. The ro- <br /> tor flow indicator provides a visual indication that liquid is being evacuated from the Liquid <br /> Condensate Trap. If any air is getting into the syphon system during evacuation the liquid <br /> flow rate will change or stop. <br /> d. When first opening the ball valve, the vacuum pressure may drop to zero inches of Hg <br /> (0" Hg) during priming of the suction line; however the vacuum should rise up to approxi- <br /> mately 4 to 5 inches Hg during evacuation. Monitor the rotor flow indicator for steady rota- <br /> tion. <br /> 9-IB <br /> GARB Approved IOM 9-Liquid Condensate Trap-Executive Orders VR-201 and VR-202 <br />