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3.2 Secondary Containment Tank Monitor The Model X76 Monitor, available in a four- or (Annunciator Module) eight -module chassis, contains a pushbutton module The Model X76 Annunciator Module is utilized to and a number of dispenser and/or annunciator monitor each tank sensor (probe or reservoir modules with their associated, intrincally safe X53 3 Pressure: 50 psi maximum interface. The Model X53 interface must be powered Leads: 22 AWG from an intrinsically safe power supply to comply with Approvals: UL file number E86797 the Factory Mutual requirements. Both power supply and the Model X53 interface are located behind the 2.7 Tank Leak Sensor, Model LS -7 alarm/dispenser module chassis and can be accessed For XERXES figerglass tank. through the front door. Housing Material: ABS 3.1 Product Line Leak Monitor and Pump Control Mounting: %" NPT with %" THD and lock nut (Dispenser Module) Pressure: 150 psig at 70°F (21 °C) maximum The dispenser module monitors the pressure of Liquid SpG:.70 minimum the product supply line via the leak sensor and two-second leak regulator attached to the Switch: pressurized supply line and controls the supply Type: Single pole, single throw pump via the starter coil relay. Rating: 10 VA Leads: 22 AWG Under normal conditions and with the submer- sible pump in the off condition, the supply line is Approvals: UL file number E86797 pressurized between 12 and 28 psi. In the event of low pressure due to a leak in the product line, 2.8 Product Line Leak Sensor, Model JT -1 the leak sensor will be activated. When the Housing: Stainless steel, explosion proof, operator turns on the dispenser switch or the hermetically sealed, NEMA Types 7 and 9 automatic test cycle is initiated (every 45 to 60 Approvals: UL (file E 56677); CSA (file 34146) minutes), the dispenser module activates the pump turbine for four to six seconds via relay Switch: K4, plug-in module pin 6 (TSO) to the starter coil. Type: Single pole, double throw When the leak sensor indicates a leak, the Rating: 250 VAC, 11 A; 125 VDC, .5 A dispenser module deactivates the pump turbine Electrical Connection: Y"-14 NPT with PVC- (OFF normal condition) and turns on the horn (K5 insulated 18 AWG leads dispenser module, pin 22) to alert the facility Pressure: operator. The product will no longer flow. The % "-18 NPT condition is considered a leak when the line AdjusConnection: re Alien wrench through port loses product in excess of .05 gallons per hour. The four seconds of pump activation allows the Proof rens Proof pressure: 1,000 psi leak regulator to feed a maximum of .15 gallons Temperature Range: - 40 to 180 OF (- 40 to of product into the product line before the pump 82 °C) is shut down. 2.9 Reservoir Type Tank Leak Sensor, By releasing the dispenser switch (pin 2), the horn will be silenced via horn relay K5 and the Model LS 10 alarm light will be lit, indicating a leak is present. Reservoir: The time delay circuit (TD3) will reset the alarm Volume: Two gallons (7.57 liters) lights to a normal condition after 45 to 60 Dimensions (height x width x depth): seconds. The facility operator should discontinue 13 x 11 x 11 inches (33.02 x 27.94 x 27.94 cm) use of this product and notify proper authorities Material: Polyethylene plastic indicated on the door of the monitor. Switch: Type: Single pole, single throw A qualified service agent or inspector, upon Rating: 10 VA, 240 V, .04 A AC, .02 A DC; 120 V, arrival, can gain access to the dispenser modules via the keylock switches. By switching .08 A AC, .05 A DC to the TEST position and holding it for Stem and float material: Polysulfone 10 seconds, the technician can check the Operating Temperature: 0 to 225°F (-18 to system for leak and/or fault condition. Switching 107°C) Pressure: 50 psi maximum to the PUMP DISABLE position will permanently Leads: 22 AWG disable the module, so that problems can be rectified. The time delay circuit (TD3) sustains Approvals: UL file number E86797 the indicator for approximately 60 seconds and reset automatically thereafter. Reactivation of the dispenser switch will re -initialize the alarm 3.0 SYSTEMS OPERATION cycle. 3.2 Secondary Containment Tank Monitor The Model X76 Monitor, available in a four- or (Annunciator Module) eight -module chassis, contains a pushbutton module The Model X76 Annunciator Module is utilized to and a number of dispenser and/or annunciator monitor each tank sensor (probe or reservoir modules with their associated, intrincally safe X53 3