Reply
 
Thread Tools Display Modes
 
Old 10-31-2015, 04:34 PM   #21
Guru
 
hmason's Avatar
 
City: Westport, CT
Country: USA
Vessel Name: Magic
Vessel Model: Grand Banks 46 Europa
Join Date: Aug 2013
Posts: 1,901
It's not the thermostats as I have tried moving them all to a coldest setting. I have not hooked up to shore power and switched over from the generator. We are now in the last 3 days of our trip south and will not be at a dock until we reach our destination. The fridge is running perfectly on the generator. My refrigeration guy is already scheduled to see the unit before I plug into shore power so that he can diagnose the problem ASAP. I won't fool with anything beyond changing a fuse as I'm not competent with electrics and I respect my limitations. I'm pretty good with a crimping tool but that's about it. A wrench is more my thing. Thanks all, I'll post the outcome when I know what it is.
__________________
Advertisement

__________________
Howard
Magic, 1996 Grand Banks Europa
Westport, CT and Stuart, FL
hmason is offline   Reply With Quote
Old 10-31-2015, 05:28 PM   #22
Guru
 
City: Melbourne, FL
Country: USA
Join Date: Dec 2014
Posts: 918
Quote:
Originally Posted by cafesport View Post
Just a wild ass guess, but perhaps a shore power cable issue. Marinco cables don't always play well with Hubble pedestals.
I agree. I suspect the grunert compressor is a 220vac unit and you've lost one leg on your 50 amp cable. If you have a second 50amp cable, try an alternate and see if it works properly.
__________________

stubones99 is offline   Reply With Quote
Old 11-01-2015, 07:15 AM   #23
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 16,525
"Are you 100% sure it's just not the thermostats working normally?"

Dont know Grunert , but the Adler Barbour cold plate setups did not have conventional thermostats.

The line suction was used as a temp switch to assure the eutetic fluid was ALL frozen.
FF is offline   Reply With Quote
Old 11-01-2015, 08:30 AM   #24
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Country: USA
Join Date: Apr 2014
Posts: 5,422
Quote:
Originally Posted by stubones99 View Post
I agree. I suspect the grunert compressor is a 220vac unit and you've lost one leg on your 50 amp cable. If you have a second 50amp cable, try an alternate and see if it works properly.
If that were true and if he has a 240v panel, he'd be having problems with his other 240v equipment at the same time if one leg was out.
Capt.Bill11 is offline   Reply With Quote
Old 11-01-2015, 09:56 AM   #25
Senior Member
 
City: Great Lakes
Country: Canada
Vessel Name: NONE
Vessel Model: NONE
Join Date: Jan 2013
Posts: 435
One other fact: when it wouldn't start on shore power, I started the generator and it wouldn't start with that either.

Based on Howards comment above I don't think it can be a shore power issue but if the unit is indeed a 220V system it could still be a bad leg on the fridge breaker itself. Seems unlikely to be thermostat either as Howard has three of them, they can't all be bad.

It will be interesting to see what the tech finds but if the first one couldn't find a problem it's likely the second won't either. You may have to get a bonafide electrician in rather than a fridge tech.
Capt Kangeroo is offline   Reply With Quote
Old 11-01-2015, 10:09 AM   #26
Guru
 
Northern Spy's Avatar
 
City: Powell River, BC
Country: Canada
Vessel Name: Northern Spy
Vessel Model: Nordic Tug 26
Join Date: Feb 2012
Posts: 2,667
Quote:
Originally Posted by FF View Post
"Are you 100% sure it's just not the thermostats working normally?"

Dont know Grunert , but the Adler Barbour cold plate setups did not have conventional thermostats.

The line suction was used as a temp switch to assure the eutetic fluid was ALL frozen.
Grunert makes both plate and eutetic plate, each with its style of thermostats. Plate is adjustable, eutetic plate shouldn't be adjusted once set.

I'm wondering if it isn't some kind of HP switch issue, or normal operation to prevent compressor slugging when switching power supplies.

I have worked on refrigeration systems in 20 years, so I may be way off...
Northern Spy is offline   Reply With Quote
Old 11-01-2015, 10:26 AM   #27
Guru
 
City: Carefree, Arizona
Country: usa
Vessel Name: sunchaser V
Vessel Model: DeFever 48
Join Date: Apr 2008
Posts: 6,369
Maybe missed this from previous posts - Is this an air or water cooled unit?
sunchaser is offline   Reply With Quote
Old 11-01-2015, 10:32 AM   #28
Guru
 
Northern Spy's Avatar
 
City: Powell River, BC
Country: Canada
Vessel Name: Northern Spy
Vessel Model: Nordic Tug 26
Join Date: Feb 2012
Posts: 2,667
Quote:
Originally Posted by sunchaser View Post
Maybe missed this from previous posts - Is this an air or water cooled unit?
First post reads "seawater pump kicks in immediately", and he has cleaned the strainer so I'm going with water cooled
Northern Spy is offline   Reply With Quote
Old 11-01-2015, 10:50 AM   #29
Guru
 
City: Carefree, Arizona
Country: usa
Vessel Name: sunchaser V
Vessel Model: DeFever 48
Join Date: Apr 2008
Posts: 6,369
Quote:
Originally Posted by Northern Spy View Post
First post reads "seawater pump kicks in immediately", and he has cleaned the strainer so I'm going with water cooled
The reason I asked was have some knowledge as to seawater cooling system both electrical and mechanical can be a trouble spot.
sunchaser is offline   Reply With Quote
Old 11-01-2015, 11:08 AM   #30
Guru
 
City: gulf coast
Country: pinellas
Join Date: Jun 2014
Posts: 2,199
next time it happens throw the switch multiple times and see if anything changes.
bayview is offline   Reply With Quote
Old 11-02-2015, 05:59 PM   #31
Guru
 
hmason's Avatar
 
City: Westport, CT
Country: USA
Vessel Name: Magic
Vessel Model: Grand Banks 46 Europa
Join Date: Aug 2013
Posts: 1,901
After anchoring and running the refrigeration on generator power for the last 5 nights with no issues, we arrived at our marina slip in Stuart, FL. I plugged into shore power and turned the fridge breaker on and it started up instantly. Tempting fate, I turned it on and off a few times with no problems.

Perhaps Bluto is correct and the two marinas we went to had low voltage at their power pedestals. My fridge guy will checking things out but I'm not convinced he will find anything awry.

__________________
Howard
Magic, 1996 Grand Banks Europa
Westport, CT and Stuart, FL
hmason is offline   Reply With Quote
Old 11-02-2015, 06:16 PM   #32
Senior Member
 
City: Dayton, OH
Country: USA
Join Date: Apr 2013
Posts: 195
HMason, when you wrote this-
"One other fact: when it wouldn't start on shore power, I started the generator and it wouldn't start with that either."
It occurred to me your unit might have been 'out on protector' at that time.
If the shore power voltage was too low, the excess current drawn by the stalled compressor (LRC, locked rotor current) would have heated the windings to the point the internal protector (temperature interlock) would open.
Until it cools down, it wouldn't have started.
All conjecture, of course.
What size (amps) is your refrigeration circuit breaker?
<curious>
Bluto is offline   Reply With Quote
Old 11-02-2015, 06:48 PM   #33
Guru
 
boatpoker's Avatar
 
City: Port Credit
Country: Ontario
Vessel Name: DIRT FREE
Vessel Model: Benford Fantail 38
Join Date: Sep 2012
Posts: 2,011
Quote:
Originally Posted by hmason View Post
He checked everything. He worked for an hour with gauges, meters, the works. Diagnosis---nothing wrong with the unit. He was a real gentleman and said there would be no charge.
I like to name names when someone does right by me.
__________________
If you can live with the consequences, go for it - wg
Y'am what I y'am an' thats' all that y'am - Popeye
As God is my witness, I thought turkey's could fly. Mr.C
boatpoker is offline   Reply With Quote
Old 11-02-2015, 07:18 PM   #34
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Country: USA
Join Date: Apr 2014
Posts: 5,422
Quote:
Originally Posted by hmason View Post
After anchoring and running the refrigeration on generator power for the last 5 nights with no issues, we arrived at our marina slip in Stuart, FL. I plugged into shore power and turned the fridge breaker on and it started up instantly. Tempting fate, I turned it on and off a few times with no problems.

Perhaps Bluto is correct and the two marinas we went to had low voltage at their power pedestals. My fridge guy will checking things out but I'm not convinced he will find anything awry.

The voltage would have to have been pretty low for it to not even try to come on. So I would have thought you would have seen the effects ion some of your other equipment.

I don't recall if you ever said, is it s 240v unit or a 120v unit? And I take it you don't have voltmeters to show the incoming voltage like on most of the GBs I've delt with?
Capt.Bill11 is offline   Reply With Quote
Old 11-03-2015, 07:35 PM   #35
Guru
 
hmason's Avatar
 
City: Westport, CT
Country: USA
Vessel Name: Magic
Vessel Model: Grand Banks 46 Europa
Join Date: Aug 2013
Posts: 1,901
So it quit entirely this morning. My refrigeration guy diagnosed a seized compressor.
__________________
Howard
Magic, 1996 Grand Banks Europa
Westport, CT and Stuart, FL
hmason is offline   Reply With Quote
Old 11-03-2015, 09:11 PM   #36
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Country: USA
Join Date: Apr 2014
Posts: 5,422
Bummer.
Capt.Bill11 is offline   Reply With Quote
Old 11-04-2015, 04:25 PM   #37
Guru
 
ranger42c's Avatar
 
City: Maryland
Country: USA
Vessel Model: 42' Sportfish
Join Date: Aug 2013
Posts: 3,159
Quote:
Originally Posted by hmason View Post
So it quit entirely this morning. My refrigeration guy diagnosed a seized compressor.

Yeah, my AC guy suggested that could be a possibility, too.

Apparently not, in our case.

Have your guy putz with those wires and connections a bit (unless he already tried that) before a larger expenditure.

-Chris
__________________

__________________
South River, Chesapeake Bay
ranger42c is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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





All times are GMT -5. The time now is 05:00 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012