[Roger Long]

One thing we have learned about ours which may or may not apply to yours depending on where the circulating pump is located and how it is plumbed:

Always when the boat is hauled and sometimes when it sits for a long time, the water runs out of the sea water line and the pump loses its prime. Ours has a standpipe reaching just above the waterline to prime it. This usually works but I have occasionally had to remove the discharge line from the condenser and slip a plastic hose on so I could suck on it to get the lines filled and the water flowing.