Screw Pump · Pumps
IMO AB (Colfax) IMO ARG 100e25 is a screw pump. It is normally installed in engine-room fuel, lubricating-oil or other viscous-liquid service close to the tanks and treatment equipment it serves. Its purpose is to provide smooth positive-displacement flow, particularly where liquid viscosity or suction conditions make a centrifugal pump less suitable. The existing database record states 25 bar. The screw elements and close internal clearances create the pumping action, so cleanliness, lubrication by the handled fluid and correct relief protection are important. The exact model designation identifies a particular screw-pump size and configuration; flow, differential pressure and viscosity capability must be confirmed from the manufacturer documentation.
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What our service work and the manufacturer documentation say about keeping this model running.
Check suction strainers, inlet conditions, shaft seals, bearings, drive coupling and relief arrangements. Monitor discharge pressure, noise, vibration and delivery for signs of internal wear or suction starvation. Avoid running the pump dry and verify that heating arrangements for viscous fluids are functioning where fitted. Inspect for external leakage and confirm that the handled fluid remains within the viscosity range intended for the installed pump. During overhaul, inspect screws, liners and bearings for scoring or contact. Refer to the manufacturer documentation for the exact clearances, relief settings and wear limits.
Keep shaft seals, bearings, gaskets, coupling elements and relief-valve service parts appropriate to the installed model. For critical fuel or lubricating-oil service, manufacturer-recommended rotating or screw-set spares may be justified. Verify exact compatibility by model and serial number.
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