Centrifugal Pump · Pumps
Sulzer Pumps Sulzer GSA 400/300 — Pumps, cooling.
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| Bearing lubrication | per the manufacturer's interval, typically annually or per running-hour schedule |
|---|---|
| Mechanical seal inspection | annually, or immediately on leakage |
| Coupling alignment check | annually or after disturbance |
| Strainer cleaning | weekly to monthly depending on water quality |
| Wear ring clearance check | at major overhaul, typically every 4-6 years depending on service |
| Impeller/wear ring radial clearance | typically doubles from new-build clearance before efficiency loss becomes significant for this pump class - confirm the specific figures in the pump's own manual, not a generic value |
|---|---|
| Shaft runout at coupling | keep within the manufacturer's alignment tolerance for smooth running rather than a generic figure |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
If in essential cooling service (main engine, generator, or other class-relevant system), surveyors expect evidence of standby pump availability, overhaul records, and inclusion of the pump in the planned maintenance system (PMS) with completed job history.
Estimated lifetime: Centrifugal pumps of this size/duty class commonly run 20,000-40,000+ hours between major overhauls in clean cooling water service when properly maintained - actual life depends heavily on water quality and cavitation history.
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