Centrifugal Pump · Pumps
Grundfos CRN 5-20 is a marine centrifugal pump. It is normally installed in the engine room, pump room or auxiliary machinery space within the service named by the vessel piping system. Its primary purpose is to move liquid continuously by converting impeller rotational energy into flow and pressure. Compared with positive-displacement pumps, a centrifugal pump is strongly dependent on adequate suction conditions and generally does not maintain the same flow at widely varying system resistance. For exact ratings, dimensions, settings, capacities, materials and variant-specific limits, refer to the manufacturer documentation for the exact figure.
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What our service work and the manufacturer documentation say about keeping this model running.
Inspect suction condition, strainers, seals, bearings, coupling, alignment, foundation and casing leakage. Trend pressure, flow, vibration and motor load where available. Confirm valves are correctly positioned before running and investigate cavitation promptly. Exact clearances and wear limits require manufacturer documentation.
Carry mechanical seals or packing, bearings where appropriate, coupling elements, gaskets, wear rings or impeller service parts where vessel criticality justifies them.
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