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R12 conversion to r134a

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Hello all, Any help would be great so thank you for your time. OK this is what I have going

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Old 01-01-2012, 01:44 PM
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Default R12 conversion to r134a
Model Number: ASD2522WRS05   Brand: Amana   Age: 1 - 5 years   

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Hello all,

Any help would be great so thank you for your time. OK this is what I have going on. I have a 18 month old dbl door fridge with a bad compressor. I have done all the continuity tests and changed the starter. I know the compressor is dead unless I some how missed a test somewhere. Whirlpool will not fix the fridge and the $300+ repair fee is money I don't have. So this is what I am asking (1) can I use a good compressor from an old fridge that ran on r12? I know I have to change the oil but I cannot be sure all the old r12 oil is out. By this I mean the oil that has coated internal parts that will not drain out. (2) Will this thin coating of oil cause issues with the new r134 oil? I have drained and pushed air through the compressor to clean out the oil. (3) Do I need to change the drier on the Amana? I will still be using r134 when the job is done. (4) Were can I find spec's on how much oil to use in the new/old compressor (matsushita D118LGAA U699250)? It is size wise very close to what is in the Amana. (5) How much r134 will I need to recharge the system? Ok thank you and if you can help with any of my questions that would be great help.


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  #2 (permalink)  
Old 01-02-2012, 03:23 AM
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Look at the big picture here. I know Amana fefrigerators are known to develope refrigerant leaks which will damage the compressor.
If you know there is no refrigerant leak, then your compressor may have failed and added contaminets to the system.
To clean the system, you will need a vacumm pump and nitrogen gas to blow out the system. You would probably need to use a refrigerant leak detector in the system. With a compressor burnout, you would probably need to cut and clean out the capillary line and blow out any contamination.
All this involves brazing the lines , the purchase of expensive equipment, and a lot of info and experience to properly do all the work.
This list is all I can think of now, so I probably forgot something.
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