Compressor replacement [Merged threads]


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Old 03-26-16, 04:31 PM
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Compressor replacement [Merged threads]

Hello,

R22 system - Compressor burnout

Removed compressor, flushing lines with RX11 before install

Uncertain as to the oil in the replacement compressor.

Question - How to check?

Thanks
 

Last edited by GregH; 04-10-16 at 07:50 AM.
  #2  
Old 03-26-16, 05:41 PM
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The new compressor should come with information on oil requirements.
You can't check the oil in a compressor.... there is no dipstick.
 
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Old 03-26-16, 08:23 PM
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Hello CFH2L,

Because you need to be qualified and certified in most areas for refrigerant use we don't help with refrigeration sealed system repairs.
See this.
 
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Old 04-09-16, 07:33 AM
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How much heat is too much at the compressor

I have a certified technician working on my AC. But he is having difficulty.
I watched him trying to de-solder one of the copper fittings about 3 inches from the compressor but it never "let go". No matter how much he heated it, it never loosed up and came off.

He finally gave up and said he'd return with "other equipment".

My concern is that he will damage the compressor with too much heat.

Should I be concerned?
 
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Old 04-09-16, 09:00 AM
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The compressor is acting like a heatsink. It can take a tremendous amount of heat to overcome that loss.

There is a limit how much heat is too much but it isn't something you can measure.

That connection may have been made with SilFos. It's a type of brazing that can't be "desoldered". In that case the connection gets left and the pipe is cut next to it.
 
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Old 04-09-16, 09:47 AM
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Thanks for the info.

Seems there's not enough pipe to cut. I think that was the problem.
 
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Old 04-09-16, 10:12 AM
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He may have to expand what's there, slide a pipe in and braze it.
 
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Old 04-09-16, 11:42 AM
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I think if there was room he would.
He's not here now and looking at the situation, a 90 degree piece of bent 3/4? copper pipe is directly soldered or brazed onto the compressor outlet. Then immediately at the other end of the 90 degree bend is another fitting possibly brazed.

So in essence, there is absolutely zero space between where the 90 degree ends and the fittings on both ends.

So there is nowhere to cut and fit any new pipe. It looks as though it's a very difficult situation. Not sure how he'll resolve it. If he tried to round the crimped pipe that is farthest from the compressor it'll probably be too short anyway.
 
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Old 04-10-16, 07:56 AM
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Ok.
I found your previous post on you having already replaced your compressor yourself and had advised you we do not offer sealed system repair advice.

We can offer the advice to make sure anyone you hire is qualified.
The brazing problems you describe would not be a problem with anyone certified, competent and familiar with this work.
 
 

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