Some questions on the freezer/ fridge system

28 January 2014

Posted 26/02/2014:

Sven – Thank you for the pictures. This is the refrigerator door seal.

Suggest you send the pictures to spareparts@nautors-swan.com and ask if they can supply.

Kind regards, Lars

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Posted 26/02/2014:

Thanks for the picture of the seals and numbers. Unfortunatly it seems that the seal I have installed does not fit any shown on your display. The two picutres showing the seal installed as well as the connection with a screwed steel piece. Does this look familiar ?

 Regards, Sven

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Posted 26/02/2014:

It is correct that another refrigerant has to be used today due to environmental legislation, and it is less efficient than the original one. Here a photo the seals used by the yard, can you find the right one?

Kind regards, Lars

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Posted 26/02/2014:

Thanks for your insight. Iceberg told me they could not connect a second DC compressor to the existing holding plates as the new systems run on different friogenic fluids than the existing system. Therefore in step one the exiting system will be cleaned from corrosion repainted and serviced. What I still lack is a source to the seals for fridge and freezer. Iceberg said these came directly from Nautor so maybe Lars can say which type of seal it is so that my search is accellarated somewhat. Thanks in advance! Regards, Sven

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Posted 28/01/2014:

The original system has a big capacity engine driven compressor, which can be run once a day, for example at the same time when the batteries are charged, then the hold-over plates in the boxes keep them at the set temperature for at least 24 hours. The system is heavy-duty and laid out for tropical conditions with sea water at 35 deg C. The compressor clutch opens when the boxes have cooled down enough, this can be seen on the electrical switchboard as the refrigeration light turning off.

As an optional extra a much smaller AC-compressor was supplied, it needs to run frequently like refrigeration at home, and was intended for harbour use when AC is available. The shortest cooling time is achieved with both systems running together.

In answer to Sven’s question the engine driven compressor had no electrical drive, and would be hard on the batteries if DC was used for it.

Paul says that the box temperatures vary much, it sounds like the hold-over system is not working properly.

The supplier of the system was Iceberg in Denmark, the company is still there, see www.iceberg.dk, and can probably supply new components and installation services if required. 

Kind regards, Lars

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Posted 28/01/2014: 

I used to have the same set up, but experienced too many leaks in the engine driven system, because of the vibration. I switched to two battery driven compressors, one for the fridge and the other for the freezer. The problem with the engine driven compressor was also the wide variation in temperatures because it is only run occasionally.

However with regard to the mains power refrigeration, I have kept mine, but rarely use it.

I think you are possibly taking too complicated an approach. My mains compressor is a completely separate AC compressor driven by mains power and is not associated with engine driven compressor.

I am sure that others will provide more specific advice.

Regards, Paul

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Posted 28/01/2014:

Dear members,

one of my winter jobs is to refurbish the freezer/ fridge system. This is one of the remaining old spots in the boat. In general I am very happy with the holding plate solution. The compressor is today driven by the engine. What I saw on my original plans of Nr. 58 is that there used to be AC drive for the system. This is no longer there.

As you can see from the first picture (478)  the clutch with the belt drive in the compressor has two belt positions (the clutch is old and rusted I know but I am in the process to replace it ….).

Does anyone on the organisation know how the AC drive was connected to the compressor (separate clutch as not to interfere with the belt drive from the engine …) ? I have added a second picture (485) showing the space around the system in the engine bay.

If I cannot build to the original setup I intend to attach a second clutch to the compressor so that I can attach a DC drive to it. Both clutches would be switched / wired in a way that only one can be active at the time – so that when the engine power is engaged the DC drive is free/ idle and when the engine circuit is OFF the DC-Drive is switched to run the compressor when the temperature control on the system triggers.

I have also added pictures 488 and 492 which show the seal of the fridge/ freezer. After some 25 years it has become very hard and is the cause for cold to escape and cause constant condensation around the doors.

I have tried to find a source for this seal but have not found it yet. So if anybody in the organisation knows where you can get this seal …. thanks for letting me know.

Regards, Sven / Swier