Centrifugal Pump · Pumps
Naniwa Pump Naniwa FS 200/60 — Pumps, cooling.
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| Bearing lubrication | per the manufacturer's schedule, commonly every 2000-4000 h or per grease type |
|---|---|
| Mechanical seal inspection | annually or on evidence of leakage |
| Alignment check | after any maintenance disturbing the coupling, and periodically per the PMS |
| Strainer cleaning | per operating routine, more frequent in fouling-prone cooling circuits |
| Overhaul (wear rings, seal, bearings) | typically every 3-5 years depending on duty - confirm against the manufacturer's schedule |
Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.
| Casing wear ring clearance | typically renewed when clearance reaches roughly double the as-new design value - confirm against the manufacturer's manual |
|---|---|
| Mechanical seal face wear | no fixed numeric limit; renew on visible leakage or scoring at inspection |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
As a cooling-water pump supporting essential machinery, class will expect confirmation of standby pump availability and function testing at survey rather than detailed internal inspection unless condition trending indicates a need.
Estimated lifetime: General-service centrifugal cooling pumps of this size are typically overhauled every 3-5 years of continuous duty, with the pump body commonly remaining in service 15-20 years given periodic bearing, seal and wear-ring renewal.
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