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Site Preparatiur:.and Inst tion Instructions <br /> TLS-350 USIT Monitoring System <br /> WARNING:TO AVOID ELECTRICAL SHOCK NOTE: If the water table rises and immerses the <br /> WHICH COULD KILL YOU, BE SURE AC sensor causing a water alarm,loosen the cord grip <br /> POWER TO THE TIS-350 MONITOR IS OFF and reposition the sensor to hand(the higher of)12 <br /> DURING INSTALLATION. inches above the new water level or 12 inches above <br /> its previous position. <br /> 1. Turn OFF AC power to the TLS-350 system. <br /> 6. Measure the cable length required to reach the sensor <br /> 2. Remove the 4-inch PVC cap from the monitoring well. junction box and trim the cable accordingly. <br /> WARNING: DO NOT PERFORM DRILLING 7. Install the furnished junction box cord grip in one of the <br /> AND TAPPING PROCEDURES IN A HAZARD- threaded junction box access holes. <br /> OUS AREA. DRILLING AND TAPPING CAN 8. Pass the sensor cable through the cord grip into the <br /> CAUSE SPARKS AND IGNITE VOLATILE junction box.Tighten the cord grip to ensure a water- <br /> FUMES AND LIQUIDS FOUND IN A CLASS I, tight seal at the cable entry. <br /> GROUP D HAZARDOUS LOCATION.FAILURE <br /> TO COMPLY COULD RESULT IN DEATH,SE- 9. Using wire nuts,connect the three sensor wires to field <br /> RIOUS PERSONAL INJURY, PROPERTY wires in the junction box(see Figure 57,"Three-Wire <br /> LOSS AND EQUIPMENT DAMAGE. Vapor Sensor Field Wiring Diagram"). Be sure to ob- <br /> serve color codes or wire markings to ensure proper <br /> 3. Drill(0.703" dia.)and tap a 1/2 x 14 NPT pipe thread polarity hookup to the Vapor Sensor Module connector <br /> through the top of the cap. in the TLS-350 monitor. <br /> 4. Thread the furnished cord grip into the cap. <br /> 5. Pass the sensor cable u through the cord from the WEATHERPROOF <br /> P � �P JUNCTION BOX <br /> inside of the cap until the sensor tip han gs at a point that 112"RIGID (1 PER SENSOR) <br /> is 12 inches above the highest level to which the water CONDUIT <br /> table normally rises.If this level is not known,position VAPOR BLACK <br /> the sensor tip 12 inches above the bottom of the monitor- • <br /> ingwell or 12 inches above any water in the well.Tighten TO GROUND • GREEN VAPOR <br /> the cord grip to ensure a water-tight cable entry. (See MONITOR WATER • WHITE SENSOR <br /> Figure 56,"Typical Vapor Sensor Installation.") <br /> 14'MINIMUM DIA. <br /> MANHOLE <br /> Figure 57. Three-Wire Vapor Sensor Field Wiring <br /> 2 CORD GRIP SEALS <br /> SUPPLIED WITH SENSOR Diagrams. <br /> 10.Sea1 wire nuts with epoxy sealant using one bag for two <br /> J;. WEATHERPROOF wire nut connections and another bag for the third wire <br /> " JUNCTION BOX WITH <br /> °- .11 1/2 INCH NPTTHDS. nut connection. (See Figure 58, "Epoxy Sealant for <br /> C O. Ali <br /> 11-C IC <br /> 1$CIC INCH <br /> MINIMUM) Three-WireConnections.") <br /> EPO%Y SEAL <br /> PER NFPA SPEC. <br /> TO PROBE <br /> JUNCTION BOX <br /> TO SENSOR TO MONITOR <br /> PERFORATED PVC <br /> MONITORING WELL <br /> HOUSING <br /> TIE WRAP <br /> I <br /> PACKET <br /> I <br /> EPDXY SEALANT / \ <br /> WIRE NUTS <br /> Figure 56. Typical Vapor Sensor Installation. Figure 58. Epoxy Sealant for Three-Wire Connections. <br /> 36 <br />