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Old 05-28-2015, 04:58 PM   #1
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'67 Fridge Freon?

Does anyone know off hand what Freon type is in a fridge from a 67' Ambassador?
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Old 05-28-2015, 07:23 PM   #2
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If it is an RV refer. It does not use freon. There is no compressor. It uses ammonia which is heated in a boiler with a small flame or electric heating element to cool the refer.


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Old 05-28-2015, 07:49 PM   #3
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How would you go about refilling it?
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Old 05-28-2015, 08:06 PM   #4
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Here is a pic of the back of the fridge. I see a port in the lower section of the unit, I'm assuming it is the port to fill and or replace the ammonia. I have all the necessary HVAC equip to work on automobiles so I can accomplish this, I hope.
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Old 05-28-2015, 08:14 PM   #5
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There are several companies who specialize in refurbishing the cooling units from RV fridges. The stuff inside is toxic. Probably not a job you should attempt yourself.
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Old 05-28-2015, 08:17 PM   #6
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yea I'm doing a lot of research including services that do this. I will have confidence if I attempt this, if I have any doubts I'll take it elsewhere.
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Old 05-28-2015, 08:26 PM   #7
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It is basically impossible for you to do any refrigerant serviced work on an absorption refrigerator. They are totally different from compressor units. The port you see is not a service port like you are used to in automotive refrigeration. There is no way for you to tell in fact that it has had a leak.

This is not a do it yourself job, unfortunately.
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Old 05-28-2015, 09:16 PM   #8
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idroba is absolutly correct.
I've been an ACE, VW, Audi, Austin Rover NA Master Tech with additional factory training in BMW and Volvo for over 40 years. I've worked on Vintage Trailers for 25 years.
No disrespect, but what you think you know about the refrigerant cycle in auto service is only partially applicable to RV absorption refrigerators.
I had a most unpleasant emergency room visit 15 years ago due to an ammonia gas leak.
Search the threads on bringing these fridges back to life, it can be done, but, do not open any lines fittings or valves. Your eyes, lungs and wallet will thank you.

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Old 05-29-2015, 04:13 PM   #9
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Im convinced, I don't know why I would want to but I was assuming it was a similar system to automobiles and that you would have to "refresh" the refrigerant. I will obviously need to do some more homework about this unit... Thanks everyone for pointing the right direction! That was the point of the thread. Uncertainty gets people in trouble.
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