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® VEEDER-ROOT PRESSURIZED LINE LEAK DETECTION <br /> SITE PREPARATION AND <br /> ® INSTALLATION INSTRUCTIONS <br /> LINE LEAK SENSOR <br /> LINE LEAK SENSOR ^ <br /> SWIFTCHECK VALVE A , <br /> i <br /> PIPE <br /> i <br /> r' <br /> i <br /> i <br /> 1N-LINE CHECK VALVE <br /> Figure 4. SwiftCheck-Valve and Line Leak Sensor Figure 5. PLLD Check Valve and Line Leak Sensor <br /> Installation Installation <br /> 1. Thread the Line Leak Sensor onto the line tee (see 1. Remove the six slot-head screws from the functional <br /> Figure 5, "PLLD Check Valve and Line Leak Sensor element (see Figure 6, "Functional Element Dia- <br /> Installation" on page 10)or SwiftCheckTM valve(Fig- gram"). <br /> ure 4). 2. Remove the functional element's spring and piston. <br /> 2. Feed the Line Leak Sensor cable through the water- 3. Carefully re-assemble the functional element using a <br /> tight cord grip on the Line Leak Sensor junction box. new gasket. Be sure that all gasketed surfaces are <br /> 3. Tighten the knurled nut on the cord grip to ensure a free from debris when reinstalling. <br /> watertight seal. <br /> E. DISABLING THE FUNCTIONAL ELEMENT <br /> NOTE: If using an FE Petro pump, disregard CAUTION: FAILURE TO PROPERLY RESEAL <br /> IIb` THE FUNCTIONAL ELEMENT WILL RESULT <br /> this section. IN PRODUCT LEAKAGE WHICH CAN CREATE <br /> The PLLD check valve eliminates the need for the SERIOUS ENVIRONMENTAL AND SAFETY <br /> pump's functional element relief valve. You must HAZARDS! <br /> remove it as part of the PLLD system installation, except <br /> on FE Petro pumps. <br /> Remove 8 <br /> Spring <br /> And Piston i <br /> Figure 6. Functional Element Diagram <br /> 10 <br />