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Table 2-1. Operator Preventative maintenance   Checks  and  Sevices  (PMCS)  (cont).
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TM-10-4320-256-14P Pump Assembly Flammable Liquid Centrifugal Self-Priming GED 2-In. 100 GPM (Model Fare 3950) Manual
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Figure  2-2.  Grounding  Procedures
TM    10-4320-256-14&P 2-9. Preparing the Equipment for Operation. a. Maintenance . (1) Perform the (B) operation preventive maintenance checks and sevices (Table 2-1). (2) Refer to the lubrication order (LO 9-2805-257-12) for information on lubricating the engine. b.  Suction   Line. (1) The pump assembly is equipped with a 2-inch (5.08 centimeters) quick disconnect female coupling on the suction (inlet) side of the pump. (2) Connect a non-collapsible (rigid wall) hose to the suction side of the pump. Locate the pump assembly so as to keep the suction line as short as possible. Avoid laying the line over rises which will form pockets. NOTE Do not use a centrifugal pump for suction lifts in excess of 25 feet (7.62 meters). A small air leak in the suction line may prevent priming of the pump. (3) Reduction in the pumping capacity becomes noticeable at lifts in excess of 15 feet (4.57 meters) and is very pronounced at 25 feet (7.62 meters). if the pump is operated at a high suction lift, verify that all hose connections are air-tight. c.  Discharge   Line. (1) The pump assembly is equipped with a 2-inch (5.08 centimeters) quick-disconnect male coupling (figure 1-1) on the discharge side of the pump. (2) Connect the collapsible hose to the discharge side of the pump. d. Grounding Ground the pump assembly to a ground rod at least 96 in. (243.84 cm). Refer to figure 2-2 and proceed  as  follows. (1) Install coupling (1) on ground rod (2) and install driving stud (3). Ensure driving stud (3) seats against ground rod (2). (2) Drive rod (2) into ground until coupling (1) is just above surface of ground. (3) Remove driving stud (3) and install ground rod (4) in coupling (1) making sure ground rods (2) and (4) seat against each other. (4) Install coupling (5) on grounding rod (4). (5) Install driving stud (3) in coupling (5) and ensure driving stud (3) seats against grounding rod (4). (6) Drive ground rod (4) into ground until coupling (5) is just above surface. 2 - 7

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