isolation valves must be closed and the strainer body must be drained before removing the cover. After equipped with cleaning, the strainer screen must means to be inserted in the strainer body, measure and the head tightened and differential pressure; checked for leakage. If strainer is otherwise not equipped with means to monthly. measure differential pressure, unit must be opened monthly and inspection. Refer to for inspection and SM SM SM maintenance requirements of As required differential pressure gauges. Filter Separator Sump Heaters (Section 3-6.5) SM SM SM Inspect filter separator sump and drain line heater elements for Filter proper operation per Separator manufacturer’s operation and Semi-annually Sump maintenance manual. Ensure Heaters heater elements meet manufacturer’s requirements by measuring resistance of heater elements with an ohm meter. METERS Positive Displacement Meters (Section 3-7.1) Inspect counter head for unusual Monthly OM OM OM noises and smooth operation. Positive displacement meters must Semi-annually or SM SM SM as required be inspected and calibrated annually or when improper Positive performance is suspected; when Displacement Meters unusual sounds or register actions develop; or after repairs have been made which may affect performance. Positive displacement meters are satisfactory when the measurement error in the normal flow direction is
isolation valves must be closed and the strainer body must be drained before removing the cover. After cleaning, the strainer screen must be inserted in the strainer body, and the head tightened and checked for leakage. If strainer is not equipped with means to measure differential pressure, unit must be opened monthly and inspection. equipped with means to measure differential pressure; otherwise monthly. Refer to for inspection and maintenance requirements of differential pressure gauges. As required SM SM SM Filter Separator Sump Heaters (Section 3-6.5) Filter Separator Sump Heaters Inspect filter separator sump and drain line heater elements for proper operation per manufacturer’s operation and maintenance manual. Ensure heater elements meet manufacturer’s requirements by measuring resistance of heater elements with an ohm meter. Semi-annually SM SM SM METERS Positive Displacement Meters (Section 3-7.1) Positive Displacement Meters Inspect counter head for unusual noises and smooth operation. Monthly OM OM OM Positive displacement meters must be inspected and calibrated or when improper performance is suspected; when unusual sounds or register actions develop; or after repairs have been made which may affect performance. Positive displacement meters are satisfactory when the measurement error in the normal flow direction is Semi-annually or as required SM SM SM annually
ufc_3_460_03_appendix_c.docx