COMPLIANCE INFO_1985-2005 - Laserfiche WebLink

Home Browse Search

FISite Preparation and IriWation Instructions TLS-350 UST Monitorinstem SECTION 13. GROUNDWATER SENSOR INSTALLATION WARNING: A VEEDER-ROOT GROUND- WATER SENSOR SHOULD BE IN- STALLED ONLY IN WET WELLS WHERE: PRELIMINARY TESTING HAS DE- TERMINED THAT WATER IN THE WELL IS NOT CONTAMINATED, OR CONTAMINATED WATER HAS BEEN REMEDIATED AND IS NOW CLEAN. .011 WARNING: TO PROTECT YOURSELF AND OTHERS FROM BEING STRUCK BY VE- HICLES DURING WORK, BLOCK OFF YOUR WORK AREA DURING INSTALLATION AND SERVICE. -111 WARNING: TO AVOID ELECTRICAL SHOCK WHICH COULD KILL YOU, BE SURE AC POWER TO THE TLS MONITOR IS OFF DUR- ING INSTALLATION. 1. Turn OFF AC power to the TLS system. 2. Remove any existing cap from the monitoring well. (A new cap is supplied with the Veeder-Root Groundwater Sensor.) 3. Lower the groundwater sensor into the monitoring well until the water float touches the bottom of the well. 4. Raise the sensor 2" to 4" from the bottom of the well and mark the sensor with a piece of tape at the point even with the top of the well casing. 5. Secure the sensor at the point marked with the tape to the retainer under the sensor well cap. Allow any excess sensor length (should be no more than 2') to hang loosely from the retainer. See Figure 67, "Groundwater Sensor Installation." 6. Press the sensor well cap into the top of the well with the excess sensor length hanging inside the well housing. 7. Pass the end of the three -wire sensor cable in through the cable bushing nut of the sensor junction box. NOTE: The groundwater sensor comes equipped with a cable and plug-in connector. If the cable is not installed on the sensor well cap, plug it into the mating connector on top of the cap and lock in position. Using wiring nuts, connect the wires from the sensor cable to the sensor field wires in the junction box (see Figure 68, "Groundwater Sensor Field Wiring Dia- gram"). Be sure to observe proper polarity between the sensor and monitor wiring installation. The conduit must be properly sealed in accordance with the Na- tional Electrical Code (NFPA 70) and the Automotive and Marine Service Station Code (NFPA 30A) since they pass from a Class I, Division I or Division II area into a non -hazardous area. 40 0 THREADED RET SENSOR WATER FLOAT (2"-4- ABOVE BOTTOM OF WELL) SENSOR WELL CAP LOCKING HANDLE - SENSOR WELL CAP WATER -TIGHT SEAL EXTRA SENSOR 1 LENGTH SHOULD I NOT EXCEED 2' I I I I I I I I I I I I I I PERFORATED PVC MONITORING WELL 1 I HOUSING I I I I I 1 I 1 I 1 1 I I I I I I I Figure 67. Groundwater Sensor Installation. * I FUEL • RED TO GROUND BLACK GROUND - TLS • WATER CONSOLE WATER WHITE SENSOR • JUNCTION BOX Figure 68. Groundwater Sensor Field Wiring Diagram. 9. Seal wire nuts with epoxy sealant using one bag for two wire nut connections and another bag for the third wire nut connection. (Refer to Figure 58, "Epoxy Sealant for Three -Wire Connections.") 16 CAUTION: IF MORE THAN TWO WIRE NUT CONNECTIONS SHARE AN EPDXY SEALANT BAG, THE CONNECTIONS WILL NOT BE PROP- ERLY SEALED, IMPROPER SEALING OF THE CONNECTIONS WILL RESULT IN INACCURATE SENSOR READINGS AND POSSIBLY FALSE ALARM CONDITIONS.