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Site Preparation_ -1 Installation Instructions TLS-350 UST Monitoring System 8. Using wire nuts,connect the two-wire sensor cable to ,1 NOTE: Pull-Cord Installation Method. To en- the field wires in the sensor junction box(see Figure 44, sure proper installation of the sensor using a pull "Two-Wire Float-Switch Sensor Field Wiring Diagram"). cord,an eyelet has been provided at the end of the Since these are contact switches, polarity is not a sensor for pull-cord installation. consideration when connecting sensor wires to field 5. Secure the riser cap to the riser pipe. wires. 9. Seal wire nuts with epoxy sealant using one bag for two 2 112 CORD GRIP SEALS wire nut connections. (Refer to Figure 26, "Epoxy SUPPLIED WITH SENSOR t4MINIMUM Sealant for Two-Wire Connections.") DIA MANHOLE—� i CAUTION: IF MORE THAN TWO WIRE NUT 16 CONNECTIONS SHARE AN EPDXY SEALANT u 0 WEATHERPROOF BAG,THE CONNECTIONS WILL NOT BE PROP- n JUNCTION BOX WITH 0 tr2 NPT THREADS ERLY SEALED. IMPROPER SEALING OF THE MINIM)IC INCH M6 CUBI I CONNECTIONS WILLRESULTININACCURATE –EPDXY SEAL PER SENSOR READINGS AND POSSIBLY FALSE NEPA SPECIFICATIONS I ALARM CNDMONS. TO PROBE MEASURED JUNCTION BOX LENGTH WARNING: EPDXY SEALANT MAY BE IRRI- OF RISER TATING TO EYES AND SKIN. MAY CAUSE 10 TANK DIA SKIN SENSITIZATION IN SUSCEPTIBLE IN- LABEL 4 DIA RISER DIVIDUALS.MAY BE ABSORBED THROUGH THE SKIN.EPDXY SEALANT CONTAINS EP- 9 TANK DIA OXY RESIN AND VINYL CYCLOHEXENE DI- LABEL OXIDE.VINYL CYCLOHEXENE DIOXIDE HAS L TANK DIA LABEL CAUSED SKIN CANCER IN ANIMAL TESTS. PRECAUTIONS:AVOID EYE AND SKIN CON- SOR TACT. WEAR IMPERVIOUS GLOVES AND CABLE SAFETY GLASSES.USE ONLY IN WELL VEN- 4 TANK DIA TILTED AREAS. LABEL D. INSTALLATION OF DISCRIMINATING INTERSTITIAL SENSOR — FIBERGLASS SENSOR TANKS NOTE:To ensure proper operation of the sensor,it is PART NUMBER PULL CORD important thatyou accurately measure your riser,and EYELET correctly install the sensor accordingto the size ofyour fiberglass tank. This ensures the sensor will rest as Figure 48.Discriminating Interstitial Sensor close as possible to the bottom of the tank annulus. Installation–Fiberglass Tanks. 1. Measure the length of the riser pipe as show in Figure 6. Tighten the cable bushing nuts on the riser cap and 48,"Discriminating Interstitial Sensor Installation— junction box to ensure a water-tight seal at the cable Fiberglass Tanks." entry. 2. Locate the label on the sensor cable that corresponds to 7. Using wire nuts,connect the two-wire sensor cable to the tank size. the field wires in the sensor junction box. Be sure to NOTE:Sensor cable tank size markings are based observe color codes for proper polarity hookup to the on Xerxes and Owens Corning Fiberglass Tanks. TLS-350 monitor Type A Interface Module.(See Figure Call Veeder-Root if you are installing the sensor in 49,"Discriminating Interstitial Sensor Wiring Instal- another brand of fiberglass tank. lation Diagram.") 3. Measure from the appropriate label, up the sensor WEATHERPROOF cable (away from the sensor) the riser pipe length JUNCTION BOX determined in step 1. Mark this position with the tie 112 RIGID (T PER SENSOR) wrap provided. CONDUIT BLK u2 CAUTION: DO NOT USE A KNIFE OR OTHER SHARP OBJECT TO MARKTHE LEADER CABLE. To FROM MONITOR SENSOR SAM MARK THE DISTANCE WITH THE TIE WRAP mmqw PROVIDED. t BLK p1 4. Using a pull cord,draw the sensor through the intersti- tial space until the tie wrap is even with the top of the Figure 49. Discriminating Interstitial Sensor Wiring riser pipe. The sensor should now be at the bottom of Installation Diagram. the tank. 31