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Thread: compressor burn out
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22-08-2012, 04:28 AM #1
compressor burn out
What causes compressor burn out?
Is it just moisture/acid? Does a burn out cause acid to be left behind?
Got a package a/c that's 10 years old with the compressor shorted to earth.
I can't see moisture acid causing the burn out since it's a package a/c so factory piping and charging, so no field piping/evac or refrigerant charging done. Plus also it's age, I can't see it lasting so long with moisture/acid in the system.
I want to know what could be the cause so there's no problem with the replacement compressor as it's a $3k compressor.Last edited by Dunno_Daikin; 22-08-2012 at 04:30 AM.
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22-08-2012, 05:22 AM #2
Re: compressor burn out
Many causes out there for compressors to burn out. Power supply problems like a surge or brown-outs, contactor failure, compressor overheating from clogged condenser, refrigerant breakdown or just wear and tear.
Have to flush system before installing new compressor and weld in a suction line drier for added protection.To the optimist, the glass is half full. To the pessimist, the glass is half empty.
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22-08-2012, 06:11 AM #3
Re: compressor burn out
The fact it ran for ten years indicates the design appears OK. The important thing for the new $3K compressor is that the system is cleaned to acceptable standards & as Mike said -drier, filter + new start gear. Just again the system must be proved to be clean, use an acid test kit & search forum for procedure if necessary.
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22-08-2012, 06:33 AM #4
Re: compressor burn out
I used an emerson acid test kit on the current compressor oil and it tests OK?
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22-08-2012, 06:45 PM #5
Re: compressor burn out
The phrase "burned compressor" boils down to failed windings insulation.
Windings insulation failure is caused by high temperature/acidity,etc.
Acidity already having been discussed, high temperature is caused by high current /high pressure, etc, .
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22-08-2012, 11:07 PM #6
Re: compressor burn out
SOme reasons here....
http://www.e-refrigeration.com/learn...ailure-reasonsBrian - Newton Abbot, Devon, UK
Retired March 2015
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25-08-2012, 12:29 PM #7