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0 the probe and monitor wiring during installation. The conduit must be properly sealed in accordance with the • National Electrical Code (NFPA 70) and the Automo- tive 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. WEATHERPROOF JUNCTION BOX (1 PER PROBE) 1/2" RIGID CONDUIT i Blk • TO FROM MONITOR PROBE + Wht Figure 38. Two -Wire Probe Field Wiring Installation Diagram. 9. Seal wire nuts with epoxy sealant furnished with each probe, using one bag for two wire nut connections. (Refer to Figure 26, "Epoxy Sealant for Two -Wire Connections.") • CAUTION: IF MORE THAN TWO WIRE NUT CONNECTIONS SHARE AN EPDXY SEALANT BAG, THE CONNECTIONS WILL RESULT IN INACCURATE PROBE READINGS AND POSSI- BLY FALSE ALARM CONDITIONS. WWARNING: EPDXY SEALANT MAY BE IR - RITATING TO EYES AND SKIN. MAY CAUSE SKIN SENSITIZATION IN SUS- CEPTIBLE INDIVIDUALS. MAY BE AB- SORBED THROUGH THE SKIN. EPDXY SEALANT CONTAINS EPDXY RESIN AND VINYL CYCLOHEXENEDIOXIDE. VINYL CYCLOHEXENE DIOXIDE HAS CAUSED SKIN CANCER IN ANIMAL TESTS. PRECAUTIONS: AVOID EYE AND SKIN CON- TACT. WEAR IMPERVIOUS GLOVES AND SAFETY GLASSES. USE ONLY IN WELL VEN- TILATED AREAS. 10. Tighten the cable bushing nuts on the probe riser cap and junction box to ensure a water -tight seal at the probe cable entry. 11. Secure the riser locking cap to the top of the riser pipe. A padlock may be installed for added security. F. PROBE INSTALLATION IN ABOVEGROUND STORAGE TANKS Install each probe in an aboveground storage tank as follows (see Figure 39; "Magnetostrictive Probe Installa- tion Requirements for Aboveground Storage Tanks"): Site Preparation a Installation Instructions T TLS-JPUST Monitoring System WARNING: TO AVOID ELECTRICAL SHOCK WHICH COULD KILL YOU, BE SURE AC POWER TO THE MONITOR IS OFF DURING INSTALLATION. 1. Turn OFF power to the TLS system. 2. Make sure any liquid other than the product to be dispensed has been pumped out of the tank. 3. Be sure there is no sludge in the bottom of the tank. Sludge can interfere with proper operation of the water float. CAUTION: HANDLE PROBES CAREFULLY! STRIKING OR DROPPING PROBE WILL RESULT IN LOSS OF CALIBRATION AND COULD CAUSE PERMANENT DAMAGE. 4. Attach the probe cable connector to the mating plug on the top of the probe. Be sure the connector is attached securely by hand tightening the locking ring. 5. Place floats at bottom of probe before standing the probe on end. ifCAUTION: HANDLE PROBES CAREFULLY! STRIKING OR DROPPING PROBE WILL RESULT IN LOSS OF CALIBRATION AND COULD CAUSE PERMANENT DAMAGE. 6. Carefully lower probe into the riser pipe until the boot rests on the bottom of the tank. STRAIGHT LIOUIDTIGHT CONNECTORS are' (SUPPLIED WITH AST KIT) WEATHERPROOF JUNCTION BOX WITH INCH NPT THDS Ih 16 CUBIC INCH MINIMUM) EPDXY SEAL PER NFPA SPEC RISER DIMENSION SHOULD BE 18" MIN. TO THE BOTTOM OF FLEXIBLE METAL CONDUIT THE RISER CAP SUPPLIED WITH AST KIT SEE NOTE BELOW 4.00" A.P I. PIPE SCHEDULE 40 TANK MAGNETOSTRICTIVE PROBE Note: Increase this minimum dimension if the tank diameter does not match the probe length. (Example: A 7'6" dia. tank will use an 8' probe. The extra probe height will be lodged in the riser pipe, which must be 6" longer than the minimum in order to provide room.) Figure 39. Magnetostrictive Probe Installation Require- ments for Aboveground Storage Tanks. 27