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Refrigeration
Hold Over/Cold Plate Refrigeration
More on Hold Over/Cold Plates

More on Hold Over/Cold Plates
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Steve Pooler

posts 1127

3:10 pm June 18, 2011
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Post edited 4:18 pm – June 18, 2011 by Steve Pooler

Hi Kurt….Glad you are having some fun on the boat~

 

This could go back to the ventilation thing we discussed way back when ?  Laugh

It's much hotter down here than in Baltimore….Higher Temps = Higher Pressures…(as I have been teaching all along)

It didn't make refrigerant, but it is operating in a higher heat load condition that without water cooling it can''t efficiently operate in….The only option then becomes…Adjust the charge to the conditions… 

That air cooled condenser enclosed in that space is no where near as efficient in tropic climates as it is up north, and this is surely where the water cooling we spoke of would be doing it's job .

 

Steve~
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mixman

Maryland

posts 16

3:53 pm June 18, 2011
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I installed a kit to bring air from outside in to cool the unit.  The unit was designed to use a way over-priced dryer duct to do such (I ordered the official kit for $100 and sent it back since it contained $4 of items from Home Depot!).  I know you're right about heat and such, but I never had this problem with the original system which didn't have access to outside air.  Plus, other than this past week, it's been much hotter in MD than in FL (we've been enjoying that issue :-).  It's quite normal for MD to get into the upper 90's and even the low 100's at times (although it's a little early in the season for such temps there).

 

Perhaps if things can vary so greatly I better go and get one of those semi-professional gauge sets.  When I had the guy in Baltimore check it the outside air was probably upper 60's to low 70's.  At least I know enough to keep the thing running!  Thanks for all your help and for your forum.

 

–Kurt
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Steve Pooler

posts 1127

4:27 pm June 18, 2011
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Post edited 4:40 pm – June 18, 2011 by Steve Pooler

Kurt~

With water cooling available…It could be as simple as opening a thru-hull & flipping a switch…I warned of this…

But as I remember you & the Admiral opted to not go with another thru hull…

It is what it is now and you will likely need to add refrigerant in cooler temps…Then it makes you wonder if you have a leak Confused

Best of luck & enjoy your stay here in Sunny Fl  Cool

 

Steve~
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Staseadawn

Hernando Beach, Florida

posts 5

12:08 pm October 12, 2011
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I have  a Pearson 365 hull 193…it had a grunert unit driven by a 90 amp electric motor.  I have discarded it.  I have a cold plate that looks good.  Can I hook a different unit, maybe an adler barbour to my cold plate?  Does anyone have a contact number or email for Grunert….Billy
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Steve Pooler

posts 1127

2:41 pm October 13, 2011
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Billy~

I believe I linked your options in your thread that you started here…

To answer this question…
The Adler Barbour 12 volt (or any 12 volt) unit will not have the horsepower to pull down a holding plate of that size…Once pulled down a 12 volt system MAY be able to keep up but it won't be efficient doing so…

As far a a contact for Grunert…I am one…And I'd love to help…
Please check the options in the link I posted and we can talk about those…

Steve~
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