The boat has been out on charter
until two days ago and the captain
has been happy with the refrigerator
performance. Yesterday, I was able to go aboard and found the following:
5" Hg suction, 94 psig discharge, suction line frosting to the accumulator outlet, 0.69 psig pressure drop from accumulator inlet to the compressor suction. I looked for any restrictions in the suction line and found none. The bends in the 1/2" tubing were all long radius and there were no kinks. The only part of the suction line that I could not inspect, of course, was the tubing in the cold plate. The sight glass was full, and the engine was at idle speed (the tach was not functioning). By the way the refrigerant was new and the system was thoroughly vacuumed.