SVA 200M

Common issues

• Mechanical seal leakage
• Bearing wear or overheating from lubrication failure or misalignment
• Impeller wear or erosion, including cavitation pitting on the suction side
• Coupling misalignment leading to vibration and premature bearing wear
• Reduced capacity from fouling or marine growth in seawater service
• Loss of prime or reduced flow from a partially blocked suction strainer

Inspection checklist

• Vibration monitoring at bearing housings
• Mechanical seal leakage check
• Bearing temperature check
• Coupling alignment check
• Capacity/pressure test against the pump curve
• Suction strainer inspection and cleaning
• Check foundation bolts and pipework supports for looseness

Service intervals

Typical wear limits

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

• Mechanical seal kit
• Bearing set
• Impeller
• Wear rings
• Shaft sleeve
• Gasket/O-ring set

Safety

• Hot surfaces where the pump handles engine cooling water at elevated temperature
• Pressurized system - isolate and depressurize before opening
• Rotating shaft and coupling guard must be in place during operation
• Risk of scalding or water hammer if valves are operated out of sequence during changeover

Class survey

Essential cooling water pumps are treated as continuous survey machinery items; duty/standby arrangement and automatic or manual changeover are typically checked at survey.

Estimated lifetime: Cooling water pumps of this type often run continuously; major overhaul intervals are commonly quoted in the range of 20,000-40,000 running hours depending on service and water quality - confirm against the maker's recommendation