Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 13-03-2014, 12:27   #1
One of Those
 
Canibul's Avatar

Cruisers Forum Supporter

Join Date: Sep 2006
Location: Turks and Caicos Islands
Boat: Catalac 12M
Posts: 3,209
CU200 fridge bad installation for 20 years?

We bought an old boat. While replacing control module on cu200 fridge dual compressor setup I found something that doesn't make sense to me. Can anyone see a reason that the brine output of a seldom used water-maker should be plumbed through the cooling coil of the little compressor?

I'd think that this means the fridge compressor only got cooling water when the water-maker was pumping warm brine through it. That would have been very seldom, and not in the past six years.

Shouldn't the compressor have its own pump? It has the output to control one. I this system was installed by rich beers in the early 90s. It was working until we got struck by lightning on the way home with it 20 years later. Am I mistaken on the plumbing error?
__________________

__________________
Expat life in the Devil's Triangle:
http://2gringos.blogspot.com/
Canibul is offline   Reply With Quote
Old 13-03-2014, 21:07   #2
Marine Service Provider
 
SV THIRD DAY's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: La Paz, Mexico
Boat: 1978 Hudson Force 50 Ketch
Posts: 3,653
Re: CU200 fridge bad installation for 20 years?

Holy Smokes....talk about a screwey way to plumb things!

Brine from the water maker is even more corrosive than normal sea water with it's concentrated salt content. I would get rid of that set-up Pronto!

Regarding the water maker brine.
The two common ways to plumb it overboard. Thr first is with an above the water line plastic through hull. The second and most common in the installations we do is to tie the brine discharge into a galley sink or head sink drain. This way you have one less hole in the boat.

For the CU200 water cooling.
I would run the system without the water cooling circut even hooked up and save yourself the amp draw and maintenance headache of adding water cooling to the unit.
__________________

__________________
Rich Boren Goodbye Morro Bay...Hello La Paz, Mexico and the owner of:
Cruise RO Water High Output Water
Technautic CoolBlue Refrigeration
SV THIRD DAY is offline   Reply With Quote
Old 14-03-2014, 04:09   #3
One of Those
 
Canibul's Avatar

Cruisers Forum Supporter

Join Date: Sep 2006
Location: Turks and Caicos Islands
Boat: Catalac 12M
Posts: 3,209
Re: CU200 fridge bad installation for 20 years?

Thanks for that reply. I couldn't believe it when I first saw how it was hooked up. obviously, you're correct in that the little compressor runs just fine without the cooling water, since it's been doing so without it for so long. I have to believe it would be even more efficient if it had a small pump but you're also right in pointing out that a small pump would draw more amps meaning the low drain compressor would be somewhat self defeating.

The brine output is plumbed okay at the far end. It comes from the little PUR 35 watermaker to the compressor, and out of the compressor to a T fitting on the output side of the cooling water from the big compressor. I can easily sort that out, especially if I really don't need to pump water through the CU200.
__________________
Expat life in the Devil's Triangle:
http://2gringos.blogspot.com/
Canibul is offline   Reply With Quote
Old 14-03-2014, 04:30   #4
Registered User

Join Date: Sep 2010
Posts: 242
Re: CU200 fridge bad installation for 20 years?

it's kinda screwy but the only way I can think it would make sense is if the original setup was a engine driven refrig and an engine driven desal, in which case running both at the same time would mean that there was water on the cooling coil when it was actually being used ... but that's pretty screwy!
__________________
jannw is offline   Reply With Quote
Old 14-03-2014, 10:32   #5
One of Those
 
Canibul's Avatar

Cruisers Forum Supporter

Join Date: Sep 2006
Location: Turks and Caicos Islands
Boat: Catalac 12M
Posts: 3,209
Re: CU200 fridge bad installation for 20 years?

Yes,I agree. I've tried to think of a scenario where this is the best configuration and can't. There is a platform next to the other engine that looks like it is for mounting some belt driven thing, but that's in the other hull from the refrigeration. I guess an engine driven RO. And even then, I can't see running brine over to the other hull when fresh seawater is already available. I'm thinking it must have been a mistake. Never noticed until the fourth owner.
__________________
Expat life in the Devil's Triangle:
http://2gringos.blogspot.com/
Canibul is offline   Reply With Quote
Reply

Tags
installation

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Engine Sitting for Almost 2 Years - Bad ? andreas.mehlin Engines and Propulsion Systems 6 18-01-2012 11:44
Crtitique this Fridge / Freezer Installation David_Old_Jersey Plumbing Systems and Fixtures 21 12-09-2010 17:53
2 years planning, 2 years sailing...was it worth it? ABSOLUTLY!!! kingfish General Sailing Forum 14 19-04-2009 17:35
Home Depot Plumbing fittings - just bad or really bad? neelie Plumbing Systems and Fixtures 34 11-11-2008 18:21
Fridge Kit Installation mickmul Plumbing Systems and Fixtures 17 12-05-2008 15:18



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 04:39.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.