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Vacuum Sensor System Installatlon Guide Running a Manual Test <br /> Running a Manual Test <br /> Perform the Manual Test for Each Vac Sensor <br /> You enter the DIAG MODE of the TLS Console by pressing the MODE key until its display appears. Press the <br /> FUNCTION key to select diagnostic functions and the STEP key to view each of the Function's displays. Where <br /> you can enter changes to displayed data,you do so with the same front keys used enter to system programming <br /> selections (i.e., ENTER, CHANGE, etc.). <br /> Figure 20 displays the Vac Sensor Manual Test procedure steps and Figure 21 displays the Vac Sensor Evac Hold <br /> procedure steps. <br /> Vacuum Sensor Operability Test - Required for Each Sensor Prior to Startup <br /> 1. Vacuum leak test:Tum the 3-way ball valve (connected to the interstice being monitored)from the'normal' <br /> position to the'test' position.This should vent the vacuum sensor to atmosphere while maintaining vacuum in <br /> the interstice. <br /> 2. Wait at least 1 minute at the console for the system to produce a'No Vac'alarm. Press the console's Alarm/ <br /> Test key to silence the beeper and acknowledge the alarm. <br /> 3. Tum the 3-way ball valve back to the'normal'position. <br /> 4. At the console enter the DIAG MODE and initiate a manual test that will clear the'No Vac'alarm (Refer to <br /> Figure 20 for Manual Test instructions). <br /> 5. Vac Float Liquid Sensor(in sump)test:This test is performed using water,gasoline, or other appropriate test <br /> liquid for systems with the float housing in the sump. Unscrew the lower float bowl (about a 1/4 tum) from the <br /> Vac Float body and fill the bowl with the test liquid.Screw the filled bowl back onto the Vac Float body and a <br /> Liquid Alarm will be generated.At the console press the Alarm/Test key to silence the beeper and <br /> acknowledge the alarm.Again unscrew the bowl to clear the alarm. Empty the bowl,wipe it clean,then screw <br /> it onto the Vac Float body. <br /> 6. For double-walled tanks,the interstitial sensor must be removed from the tank to perform a functional test. <br /> Refer to the Operability Testing Guide (P/N 577013-814)and follow'Testing Procedure C' (interstitial sensor <br /> for steel tanks) or'Testing Procedure E' (interstitial sensor for fiberglass tanks)as applicable. <br /> 7. Print the test history and console status for your records.This completes the test procedure. Report any <br /> performance concerns to Veeder-Root while on site. <br /> 24 <br />