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Thread: Oil odour
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18-12-2017, 09:06 PM #1
Oil odour
Hi All,
Was chatting to an old service guy a while back who told me, he sometimes determines a system refrigerant and oil by smell he said sometimes you can get a sweet smell which could be caused from a grounded comp which contaminated the system.
It got me thinking as I was working on a Daikin VRV R407C and when I was recovering the refriegent I could smell a strong odour. Is this due to the make up of R407c or possible contamination?
Feed back much appreciated.
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18-12-2017, 09:15 PM #2
Re: Oil odour
Hi Dermtheworm.
I can confirm that is you ever open up a system that has suffered a "Motor Burnout", you will not forget the sweet smell!
Some older refrigerants would develop a sweet smell when they had become contaminated with moisture.
Others when heated would smell of what was a type of phosgene Gas.
Mineral oils would stink when they had become carbonated.
So maybe what you are describing could be from a contaminated system.
Moisture may have been introduced?
Time for an Oil Analysis I think!
GrizzlyDespite the High Cost of Living it still remains Popular!
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18-12-2017, 09:58 PM #3
Re: Oil odour
Hi Grizzly,
Thanks for feedback much appreciated , yes I was thinking possible contamination as looking back on service records they’re has been lots of problems.
Would yourself look to replace polyoester oil for a system like this? How would you look to tackle oil contamination with a scroll compressor as there is no real gauge to go by? I