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Old 19-06-2017, 02:00   #1
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Norcold Sawafuji compressor could be find , or not?

One of my Norcold firdges is dead. Means- compressor working,but couldn't pump through the frion. Frion was recharge to a proper pressure. Got advise to change the compressor. But, seems like almost no one at the market. The model is Sawafuji SK 511N...Seen one ad - in Italy -asking about 400 euro for the used one! Is it time to look for a new fridge ? Or, could find/replace the compressor ?
Thanks for advise
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Old 19-06-2017, 09:45   #2
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Re: Norcold Sawafuji compressor could be find , or not?

Is compressor connected to AC and DC? Does it pump on either AC or DC?

This Compressor runs on 22 or 26 volts AC. But when on DC power compressor runs on 22 or 26 pulsating to create a sign wave of 50 or 60 cycles.

A technician will test compressor by powering it from a transformer that produces a secondary current of 22 volts AC.

Reservice to proper pressure what does that mean? If compressor is not running the correct pressure cannot be determined.

Does compressor vibrate? or just hum? Does it get warm?

If this is an electrical problem that in most cases it is a new compressor will not fix it. I would first want to disconnect both wires from compressor and find a test transformer that voltage matches available AC power and a low voltage output of 22 to 26 volts.
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Old 19-06-2017, 10:52   #3
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Re: Norcold Sawafuji compressor could be find , or not?

Quote:
Originally Posted by Richard Kollmann View Post
Is compressor connected to AC and DC? Does it pump on either AC or DC?

This Compressor runs on 22 or 26 volts AC. But when on DC power compressor runs on 22 or 26 pulsating to create a sign wave of 50 or 60 cycles.

A technician will test compressor by powering it from a transformer that produces a secondary current of 22 volts AC.

Reservice to proper pressure what does that mean? If compressor is not running the correct pressure cannot be determined.

Does compressor vibrate? or just hum? Does it get warm?

If this is an electrical problem that in most cases it is a new compressor will not fix it. I would first want to disconnect both wires from compressor and find a test transformer that voltage matches available AC power and a low voltage output of 22 to 26 volts.
Richard,

This compressor runs on 12V DC. It could be switched to AC (not sure if it's 110V,or 22-26V , as you've mentioned. Compressor makes a lot of noise-vibrates itself and the boat. Much stronger,than his cousin (I have anothe Norcold fridge+freezer which works well,hopefully,and,much quiter). When we've noticed,that it not cooling,I stopped it and,arrived to home port disassembled from the cabinet. Local electrician,serving as a Figaro as plumber,aircon and fridge repair,came with his bomb,loaded with frion and a pressure gauge. There was no frion,almost. He pumped it in,to nominal level and,I started the fridge. After a dozen minutes,as he explained,the pressure inside the compressor should lower (if frion will flow to the grid) and,it will become hot. In my case: vibrates and make noise,keep the same pressure,warms a bit,but not hot. That's why the advise was:"look for replacement. He can't pump it through". I did. But no luck - almost nothing,at the market - just found a used one in Italy for over 400 euros. Factory not answering either. Should I try to reanimate my compressor .
Or.lookf for a replacment fridge ?
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Old 19-06-2017, 11:47   #4
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Re: Norcold Sawafuji compressor could be find , or not?

A replacement compressor (not the same brand/type) should be fairly easy to source. It needs to be selected to match the supply voltage (12 VDC), refrigerant type (134a), and capacity. However, the most important item to source is a refrigeration expert (not the person you have used so far). You need to determine whether or not something is wrong with the rest of the system.

A small, brand new AC compressor, combined with a pure sine wave inverter, sized to fit the power draw of the compressor, could be had for less than 200 Euro. For a bit more, you could have a nice Danfoss DC unit, such as the BD35F. Both would require a knowledgeable refrigeration person to properly drain the current system, make the new connections, re-charge, and test.

If you purchase a brand new, modular, system, they are configured so that a normally handy person can self-install. More money, but you have a brand new system that should work well for the next decade.
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Old 25-06-2017, 15:33   #5
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Re: Norcold Sawafuji compressor could be find , or not?

All these compressors have two situations that cause them to get abnormally hot quickly: One is if has a lot of air in the system or two there is a broken discharge pipe or discharge chamber gasket leaking internally.
Air in the system causes overheating and very high power consumption rate whereas a broken discharge causes overheating but no increase of consumption rate.
You most likely have a broken discharge pipe inside the compressor case so change the compressor, or the condensing unit to one with a proper recipricating compressor like the Secop.
Cheers, OzePete Ozefridge
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Old Yesterday, 04:23   #6
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Re: Norcold Sawafuji compressor could be find , or not?

Thanks. This Danfoss BD35F 101Z0200 R134A Secop refrigeration 12/24V DC
Is easy to chase and, think will be possible to locate in my fridge.
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Old Yesterday, 06:38   #7
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Re: Norcold Sawafuji compressor could be find , or not?

I would strongly suggest you not try to change a Swing compressor system over to a Danfoss BD35 compressor as the remaining system components and even the oils are not compatible.
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Old Yesterday, 08:08   #8
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Re: Norcold Sawafuji compressor could be find , or not?

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Originally Posted by Richard Kollmann View Post
I would strongly suggest you not try to change a Swing compressor system over to a Danfoss BD35 compressor as the remaining system components and even the oils are not compatible.
Richard, I'm sure you've covered lots of questions like these before, but it would be really helpful if you listed the incompatibilities, and then how to get around them. I realize the OP has been informed that it's necessary to get someone highly knowledgeable, like you, to assist locally, but for people like me it would be great to learn more about the issues of replacing just one component of an existing system.
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Old Yesterday, 10:53   #9
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Re: Norcold Sawafuji compressor could be find , or not?

Quote:
Originally Posted by Richard Kollmann View Post
I would strongly suggest you not try to change a Swing compressor system over to a Danfoss BD35 compressor as the remaining system components and even the oils are not compatible.
Richard,thanks,understood,that swing compressor isn't compatible with rotary. But,where all those high-end Sawafuji compressors gone? Web search leads only to drawings and engel website,but no replacement. Ebay.it - one "undamaged,but not tested" for $450!! Is it
Seems like the only alternative is a fridge replacement ?
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