Grunnert Refrigeration

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Mar 14, 2007
20
Hunter 430 Hampton, Va.
Just purchased a Hunter 430 and don't have a lot of manual information about all the systems. The boat is equipped with a Grunnert AC50 refrigeration. (120 v. water cooled with two plates in the freezer and one in fridge). A couple of questions with anyone familiar with this unit: (1) Does the pump run the entire time the refrigeration is turned on and (2) what kind of amperage draw are you experiencing running on dockside power? Dennis
 
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Thomas Wiener

Hunter 430 refrigeration

1 The pump cicles with the compressor on and off 2 About 6 AMPS Regards Tom
 
Mar 14, 2007
20
Hunter 430 Hampton, Va.
Hunter 430

I was afraid you'd say that. The pump is running continuously. The freezer plates are frosting and are bringing the temp down below freezing with the frdige running at just under 40 degrees. Any suggestions? Dennis
 
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Steve Thoma

Getting rid of mine

The info in the previous post is pretty accurate for my H430. Mine drew between 6-8 amps after the initial spike during startup. This may not include the power required for the pump however. They have good documentation located here as well as other useful info: http://www.marineair.com/pdfs/L-2146.pdf I got sick of mine leaking R404 and a $3500 estimate to fix it and decide to refit with a NovaKool AC/DC RFU-9000 self contained unit. It was a bear to remove and I am in the process of rebuilding the woodwork, but so far no regrets. Lots more usable space and only draws 1 Amp connected to shore. A few things I noticed- lots of mildew and mold in the floorboards under the unit from constant moisture. the foam insulation around the box was completely saturated with liquid, likely making it very poorly insulated. If you need parts, let me know (stevethoma@yahoo.com). I have the two cold plates and the compressor removed. (I was told the leak was coming from a flare fitting - and it ran for about 6 months after being recharged).
 
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