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Go Back   SailNet Community > On Board > Gear & Maintenance > Cold Plate is Hot?
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Thread: Cold Plate is Hot? Reply to Thread
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Topic Review (Newest First)
07-15-2008 03:06 PM
speciald Is there a ight tube in the system? With the compressor running you should first see a stream of bubbles that will slowly clear to only a stream of a few bubbles. If you see this there is adequate charge. I agree that your problem is most likely a lack of coolant flow but in most installations the coolant water on engine driven compressors comes from your engine coolant water circulation and not from a separate water pump. If your engine is pumping adequate water out the exhaust, your heat exchanger for the fridge coil should be also. Also check the pipe coming out of the compressor. It should be cold and get colder as the compressor runs. If it doesn't, and adequate water circulation around the heat exchanger coil is present , and the compressor is actually turning- then the compressor or charge is bad.
07-15-2008 02:13 PM
T37Chef The answer to the problem was, it needed to be recharged. There is likely a small leak somewhere that I will try to resolve, but for now the recharge gave the unit a whole new life. With in 5 minutes of charging the plate was already freezing on the outside and with-in 30 minutes it was fully frozen...ya hooooooo!

Actually the repair man, Woody Sherrod of Sherrod Marine out of Baltimore, 410-752-2870, said the descaling probably helped the system as well.

Thanks all for the input.
05-28-2008 10:52 PM
denby I'm thinking some thing got sucked up and is restricting the water flow.
05-28-2008 10:43 PM
T37Chef Ummm, not sure how but I will investigate next time I'm there.
05-28-2008 10:34 PM
denby
Quote:
Originally Posted by T37Chef View Post
I think its got a mind of its own, it seemed to fix itself, or at least close to what it is supposed to do...fiqure that out????

It still isn't freezing as quickly as it had, normally it would freeze in about 60-70 minutes, and just needed a 30 minute recharge each day.

What do you think about removing the coil and looking at it. If I do that I would need to change the filter and recharge the system???
No don't open the refrigeration system. Can you reverse the water flow throw the condenser?
05-28-2008 10:30 PM
T37Chef I think its got a mind of its own, it seemed to fix itself, or at least close to what it is supposed to do...fiqure that out????

It still isn't freezing as quickly as it had, normally it would freeze in about 60-70 minutes, and just needed a 30 minute recharge each day.

What do you think about removing the coil and looking at it. If I do that I would need to change the filter and recharge the system???
05-28-2008 10:13 PM
denby T37Chef,

What was the problem? Or did you fix it yet.
05-17-2008 11:17 PM
denby
Quote:
Originally Posted by Sailormann View Post
Hmm - were you reversing a lot ? Maybe it cools down when you go forward and heats up when you go backwards ???
I know you're being funny but for general knowledge it makes no differance which way a direct drive piston compressor spins. I had to reverse a 30 hp 3 phase compressor that was locked up the other day to get it running till I can get a crane in to replace it.
05-17-2008 11:09 PM
denby
Quote:
Originally Posted by T37Chef View Post
yes, it got hot, sounds like a H2O issue uh.
Yes it dose sound like the refrigerant is not being cooled so the entire system will warm up. Take a look at the water cooled condenser, the problem is there.
I won't be around tomorrow until late so if you have any more questions I'll get back to you. Let me know how it works out.
05-17-2008 11:07 PM
Sailormann
Quote:
cooled engine driven system
Hmm - were you reversing a lot ? Maybe it cools down when you go forward and heats up when you go backwards ???
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