Marine Air Conditioning Seawater Pump Maintenance
The part that fails first and most often. Centrifugal pumps have no impeller to change, so this is about mounting, priming and noise.
Marine Air Conditioning Seawater Pump Maintenance: Schedule and Equipment
Marine air conditioning pumps are centrifugal, not flexible-impeller, so there is no annual impeller change. What they do instead is lose prime, wear a seal, or fail electrically — and unlike an engine pump they run for hours at a time.
Marine Air Conditioning Seawater Pump Maintenance: Procedure
If you skip it: It fails, usually in the hottest week, and the unit trips on high pressure until it is replaced.
Record the date, what you found and any parts used in the boat's maintenance log. A repeat change—less water flow, faster fouling, a new smell or a breaker that trips again—is often more useful to a technician than a one-off reading. Check the current manual and official sources before changing the procedure, and stop at the licensed-work boundary described in the disclaimer.