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PW <br /> 1. Check the float and flapper mechanism by rotating the outer coupler counter-clockwise. <br /> Make sure this activates the internal flapper and operates smoothly. <br /> ( 'yl <br /> O <br /> Outer coupler <br /> 2. Make sure the drop tube gasket is installed under the upper drop tube flange. (See step 3 of <br /> "Install the upper drop tube adapter.") <br /> 3. Thread the upper and lower drop tubes onto the OPV, and then use strap wrenches (not <br /> pipe wrenches) to tighten the drop tubes. Position one on the upper drop tube, and the <br /> other on the lower drop tube. Do not tighten the float shield or valve. <br /> 4 1 <br /> Use wrenches in this area. Use wrenches in this area. <br /> Do not use wrenches in this area. <br /> 4. Ground to earth to discharge any static electricity. <br /> 5. Carefully lower the completed OPV assembly into the riser pipe. <br /> Do not drop the assembly or force it down the riser pipe. If it does not fit, clean the riser <br /> pipe, and attempt to insert the OPV assembly again. If it still does not fit, the riser pipe may <br /> need to be replaced. <br /> 6. Reinstall the spill bucket components. <br /> 7. Use the stainless steel band clamp to install the warning plate around the 4" (102 mm) riser <br /> pipe below the threaded section. <br /> 12 <br />