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HSite Preparation and Insth. ..tion Instructions TLS-350 UST Monitoring System 6. Tighten the cord grip to secure the sensor in position on B.INSTALLATION. the riser cap and on the junction box to ensure a water-tight seal at the cable entry. The wires between the monitor and each sump sensor location must be of a type designed for use in the presence NOTE: Refer to the tank manufacturer's instruc- of gasoline and oil, and must be between AWG 14 and tions for setting the proper reservoir brine level. AWG 18. The conduit must be properly sealed in accor- dance with the National Electrical Code (NFPA70) and SECTION 9. PIPING SUMP SENSOR the Automotive and Marine Service Station Code(NFPA30) INSTALLATION since they pass from a Class I, Division I or Division 11 area into a nonhazardous area. A.GENERAL. ift WARNING:TO AVOID ELECTRICAL SHOCK The sump sensor comes with the following hardware WHICH COULD KILL YOU, BE SURE AC necessary to mount it within the piping sump: POWER TO THE MONITOR IS OFF DURING 1-PVC Mounting Sleeve INSTALLATION. 1-Aluminum 900 Mounting Bracket 1. Turn OFF AC power to the TLS-350 system. 1-Cord Grip CAUTION:DO NOT INSTALL THE SUMP SEN- 2 -#6-20 (0.312"long)Sheet Metal Screws SOR IF THERE IS ANY LIQUID IN THE PIPING The sump sensor can be mounted in either of two ways:on SUMP. FAILURE TO COMPLY CAN RESULT IN the sensor junction box using the mounting bracket and EQUIPMENT DAMAGE OR UNDETECTED PO- sleeve supplied(see Figure 54,"Typical Bracket Mount"); TENTIAL ENVIRONMENTAL AND HEALTH or,by cementing the PVC mounting sleeve directly to the HAZARDS. side of a fiberglass containment sump (see Figure 55, "Mounting Sleeve Cemented to Sump Wall"). 2. Make sure no liquid exists in the piping sump. Before you install the sump sensor, t: are are several 3. To mount the sump using the mounting bracket (see important requirements to consider: Figure 54,"Typical Bracket Mounting"): 1. The sump sensor must be positioned as close to the a. Attach the mounting bracket to the mounting sleeve containment sump outer wall as possible. using the two#6-20 0.312"long screws furnished. 2. The sump sensor must be mounted in a true vertical .1 NOTE:Screw holes drilled in the mounting sleeve position to ensure proper operation of the float switch are closer to the one end than the other. Check the contained inside. distance from the top of the junction box to the bottom of the sump to determine which way you will 3. There must be at least one inch of clearance between mount the bracket. You must leave some space the bottom of the mounting sleeve and the base of the between the bottom of the mounting sleeve and the sump. base of the sump. 4. When installed,the sump sensor must rest on the base of the sump. LEADER CABLE LEADER CABLE CORD GRIP SUMP WALL CORD GRIP MOUNTING BRACKET SUMP JUNCTION BOX WALL JUNCTION BOX I I I I I I I MOUNTING SLEEVE MOUNTING SLEEVE jai SUMP SENSOR SWITCH SUMP SENSOR SWITCH Figure 54. Typical Bracket Mounting. Figure 55.Mounting Sleeve Cemented to Sump Wall. 34