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Site Preparation a—d Installation Instructions IVA <br /> TLS-350 UST Monitoring System <br /> ll <br /> 2. Testing Single-Float Sensors. <br /> a. Immerse the sensor in a bucket of water until the <br /> float is covered by water. <br /> ADJUSTABLE <br /> LEAD CABLE b.Lift the sensor from the water until the float assem- <br /> SENSOR RISER CAP bly is completely out of the water.The TLS should <br /> LIQUID TIGHT 46��INRLE indicate an alarm condition. <br /> FITTING <br /> GRIP D. INSTALLATION OF DUAL-FLOAT HYDRO- <br /> STATIC SENSOR(Part No. 784380-302).(See Figure <br /> `ABLE TO 52,"Dual-Float Hydrostatic Sensor Dimensions.") <br /> JUNCTION <br /> BOA <br /> HIGH LIQUID 1. Submerge the sensor until it rests on the top of the tank <br /> LEVELSWITCHVENT (see Figure 52,`apical Hydrostatic Sensor Installation"). <br /> NOTE: For Dual-Float Hydrostatic Sensors, the <br /> TERTIGHTideal brine solution level is approximately halfway <br /> Lbetween the high and low water floats. <br /> CLEAR PLASTIC 19.3'CASING PE CAP <br /> NOTE:Brine level in reservoir will be at its highest <br /> when the fuel tank is full ofproduct,and at its lowest <br /> when the tank is empty.With the Dual-Float Sensor <br /> resting on the inner-tank wall,the sensor will alarm <br /> when the brine level is below 11/9"or when the brine <br /> IOW LIQUID level is above 12 V2".Refer to the tank manufacturer's <br /> . <br /> LEVEL SWITCH instructions for setting the proper brine level. <br /> 2. Secure the sensor using the cord grips. <br /> 3. Secure the lockable riser cap to the riser pipe. <br /> 4. Tighten the cord grip to secure the sensor in position on <br /> the riser cap and on the junction box to ensure a <br /> water-tight seal at the cable entry. <br /> Figure 51. Dual-Float Hydrostatic Sensor Dimensions. E. INSTALLATION OF SINGLE-FLOAT HYDRO- <br /> STATIC SENSOR(Part No.794380-301).(See Figure <br /> 53,"Single-Float Hydrostatic Sensor Dimensions.") <br /> A MINIMUM DIA WEATHERPROOF 1. Submerge the sensor until it rests on the to of the <br /> CONCRETE SUB MANHOLE `^ '+ P <br /> OR PACKED EARTH 1, INCH NPT JUNCTION BOX WITH tank,and mark the cable position at the riser cap. <br /> PER NFPA BO CORD GRIP SEAL t 6 CUBIC NCH CS <br /> IN <br /> SUPPLIED WITH MINIMUMI <br /> SENSOR 2. Poll the sensor up until it triggers an alarm.Mark the <br /> :.. . ; 'p o cable position at the top of the cap. <br /> p EPDXY SEAL <br /> PER;1.' '0 J SPEC FPA 3. Submerge the sensor until top of the riser cap is <br /> halfway between the marks on the cable. <br /> VENT TUBE - / 10 PROBE 4. Secure the sensor using the cord grips. <br /> RISER PIPE CAP � y JUNCTION BOX <br /> 5. Secure the lockable riser cap to the riser pipe. <br /> RISER PIPE SENSOR RISER CAP <br /> LOCKING HANDLE <br /> CORD GRIP <br /> ADJUSTABLE <br /> LEAD CABLE CABLE TO <br /> JUNCTION <br /> BOX <br /> DUAL POINT LIQUID TIGHT <br /> HYDROSTATIC SENSOR FITTING <br /> VENT <br /> TRP RESE RVOiR <br /> 25" <br /> WATERTIGHT <br /> SEAL <br /> HIGH LEVEL ALARM FLOAT CLEAR PLASTIC <br /> CASING 60" <br /> aimLOW LEVEL ALARM FLOAT RISER PIPE CAP <br /> OW LIQUID <br /> LEVEL SWITCH <br /> DOUBLE-WALL TANK 'CAUTION VENT TUBE MUST REMAIN CLEAR <br /> IF VENT TUBE IS BLOCKED, <br /> DAMAGE MAY OCCUR TO THE TANK 2 5•_.,I <br /> Figure 52. Typical Hydrostatic Sensor Installation. Figure 53. Single-Float Hydrostatic Sensor Dimensions. <br /> 33 <br />