OEM Spare Parts for Wärtsilä Waste & Wastewater Treatment Systems
Combining the use of quality spare parts from an original equipment manufacturer with continuous monitoring and smart maintenance planning brings considerable benefits for the lifecycle of your waste management systems & equipment. The knowledge and expertise of the original equipment manufacturer is of utmost importance when looking for ways to ensure optimised operations. From a lifecycle cost perspective, the use of original parts offers value goes far beyond the spare parts costs. Our team has the expertise to identify and supply the parts efficiently whenever needed regardless of the vessel location.
Inspector Detail
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Common issues
- Mechanical seal leakage from wear, dry-running or misalignment
- Impeller erosion/corrosion from seawater, especially under cavitating conditions
- Bearing wear from misalignment with the driving motor
- Strainer/sea chest blockage causing loss of suction and cavitation
- Casing/volute corrosion or pitting from prolonged seawater exposure
- Coupling wear or misalignment causing vibration and premature seal failure
Inspection checklist
- Check the mechanical seal for leakage and correct cooling/flushing arrangement
- Inspect the impeller for erosion, pitting or cavitation damage
- Check the casing and volute for corrosion, pitting or wall thinning
- Verify coupling alignment between pump and motor
- Check the bearing housing for correct lubrication, noise and temperature
- Inspect the sea chest/strainer for blockage or fouling
- Measure discharge pressure and flow against the pump curve/nameplate baseline
- Check pump/motor foundation bolts and vibration levels
Service intervals
| Mechanical seal inspection | annually or at first sign of leakage |
| Impeller and casing wear inspection | at each dry-docking or major overhaul, typically every 2.5-5 years |
| Coupling alignment check | annually or after pump/motor removal |
| Bearing lubrication/grease renewal | per the maker's schedule, typically every 2,000-4,000 hours |
Typical wear limits
| Impeller-to-casing (wear ring) clearance | typically renewed once clearance has opened up considerably beyond the as-new setting, since this is what drives the drop in flow/head - confirm exact figure against the specific pump manual |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Critical spares
- Mechanical seal kit
- Impeller
- Wear ring set
- Coupling flexible insert
- Bearing set
- Casing gasket/O-ring kit
Safety
- Seawater cooling pumps are typically below the waterline on a sea suction - confirm suction and discharge valves are closed and the line drained before opening the casing
- Rotating shaft/coupling - the guard must be refitted before restart
- Heavy cast components - use proper lifting gear when removing the casing or impeller
Class survey
Seawater cooling pumps supporting main engine and essential auxiliary cooling are within the general machinery survey scope; where the pump is a sole means of essential cooling, class expects evidence of a proven standby and routine performance trending. This catalog entry does not specify an exact model/type designation, so confirm all figures against the nameplate and maker's manual on board before ordering parts.
Components & Design
Component data being added…
Technical Data
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