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F Site Preparation and Inst�tation Instructions I TLS-350 UST Monitoring System 8. Seal wire nuts with epoxy sealant using one bag for two B.SENSOR WIRING. wire nut connections. (Refer to Figure 26, "Epoxy 1. Thread the two-wire sensor cable through the riser Sealant for Two-Wire Connections.") pipe cap. CAUTION: IF MORE THAN TWO WIRE NUT 2. Using wire nuts,connect the sensor cable to the field CONNECTIONS SHARE AN EPDXY SEALANT wires in the sensor junction box. (Refer to Figure 50, BAG, THE CONNECTIONS WILL RESULT IN "Hydrostatic Sensor Wiring Installation Diagram.") INACCURATE SENSOR READINGS AND POSSI- BLY FALSE ALARM CONDITIONS. WEATHERPROOF JUNCTION BOX WARNING: EPDXY SEALANT MAY BE IRRI- (1 PER PROBE) TATING TO EYES AND SKIN. MAY CAUSE 1/2"RIGID SKIN SENSITIZATION IN SUSCEPTIBLE IN- coNDulr Blk DIVIDUALS.MAY BE ABSORBED THROUGH THE SKIN.EPDXY SEALANT CONTAINS EP- TO To MONITOR SENSOR OXY RESIN AND VINYL CYCLOHEXENE DI- OXIDE.VINYL CYCLOHEXENE DIOXIDE HAS CAUSED SKIN CANCER IN ANIMAL TESTS. PRECAUTIONS:AVOID EYE AND SKIN CON- TACT. WEAR IMPERVIOUS GLOVES AND Figure 50. Hydrostatic Sensor Wiring Installation SAFETY GLASSES.USE ONLY IN WELL VEN- Diagram. TILATED AREAS. SECTION 8. HYDROSTATIC SI VISOR 3. Seal wire nuts with epoxy sealant using one bag for two wire nut connections. (Refer to Figure 26, "Epoxy INSTALLATION Sealant for Two-Wire Connections.") NOTE: The wires between the monitor and each hydrostatic sensor location must be of a type de- CAUTION: IF MORE THAN TWO WIRE NUT signed for use in the presence of gasoline and oil,and CONNECTIONS SHARE AN EPDXY SEALANT must be between AWG 14 and AWG 18.The conduit BAG,THE CONNECTIONS WILL NOT BE PROP- must be properly sealed in accordance with the ERLY SEALED. IMPROPER SEALING OF THE National Electrical Code (NFPA 70) and the Auto- CONNECTIONS WILL RESULT ININACCURATE motive and Marine Service Station Code (NFPA SENSOR READINGS AND POSSIBLY FALSE 30A)since they pass from a Class I,Division II area ALARM CONDITIONS. into a nonhazardous area. WARNING: EPDXY SEALANT MAY BE IRRI- A.EQUIPMENT PREPARATION. TATING TO EYES AND SKIN. MAY CAUSE SKIN SENSITIZATION IN SUSCEPTIBLE IN- WARNING: TO AVOID ELECTRICAL SHOCK DIVIDUALS.MAY BE ABSORBED THROUGH WHICH COULD KILL YOU, BE SURE AC THE SKIN.EPDXY SEALANT CONTAINS EP- POWER TO THE MONITOR IS OFF DURING OXY RESIN AND VINYL CYCLOHEXENE DI- SENSOR CABLE CONNECTION. OXIDE.VINYL CYCLOHEXENE DIOXIDE HAS CAUSED SKIN CANCER IN ANIMAL TESTS. 1. Turn OFF power to the TLS-350 system before connect- PRECAUTIONS:AVOID EYE AND SKIN CON- ing the sensor cable. TACT. WEAR IMPERVIOUS GLOVES AND SAFETY GLASSES.USE ONLY IN WELL VEN- NOTE:Do not install the sensor ifbrine solution has TILATED AREAS. not been installed in the annulus,according to tank manufacturer'sspecifications.Failure tocomply may 4. Restore power to the TLS-350 system. lead to an alarm or incorrect sensor readings. C.PRE-INSTALLATION SENSOR TESTING. 2. Make sure the brine solution has had time to settle in 1. Testing Dual-Float Sensors. the annular spacebefore continuing with sensorinstal- lation.Refer to the tank manufacturer's recommenda- a. Place the sensor in a bucket of water until the water tions. level is between the upper and lower float assem- blies. 3. Install the vent in the riser pipe cap.(See cap drawing b. Immerse the upper float completely in the bucket of AL in Figures 51 and 52.) water. The TLS monitor should indicate an alarm 114opm NOTE:If installing sensor in a location with a high condition. water table,install a separate vent line routed to an c. Lift the sensor from the water until the lower float aboveground location to ensure water won't enter assembly is completely out of the water. The TLS riser pipe through the cap vent. should indicate an alarm condition. 32