<div>Don, We have had our 382 since 1984, and it had the A/B large vertical Cold Machine installed when we bought it. I have found that, after the unit chills down and has completed it's first set of ice trays, I test it for run time vs. down time. As soon as the downtime becomes less than the run time, I add freon. I've found that after 15 years of use, I've had to add gas twice.
I don't have the water cooled model and my cooling air is from a port sail locker mounted fan (like yours). Perhaps our insulation is, by chance, better. I installed four 6 volt golf cart batteries in around 1990 for an extended cruise and, while I thought they were expensive, they proved to be much more effective and far less expensive than my previous 12 volts. I finally had to replace them last year after 8 seasons. During that time, I inadvertently left the unit run while we left the boat on a mooring in Nantucket for 7 days. When we returned, the unit was running and the ice was still frozen!
I'd suggest a larger battery bank, and a freon recharge! Good luck! Mick MacMullan
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