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16-11-2011, 03:22 PM #1
Compressor Liquid Return R-404A washing Oil
I have a broken Semihermetic Compressor diagnosed for 'Liquid Return' that washed the oil. This are the damages encountered:
1.-Scratched pistons. (I'm not English native so please correct)
2.-Scratched and premature wear of Oil Pump.
3.-Excesive wearing on bearings/bushings.
4.-Overheating of Valve Plates.
5.-Excesive wearing on Tie rods.
Are this damages encountered enough to determine the cause of damage was 'liquid return'?????
Also I thought that the Oil Differential Pressure Control (Jhonson Controls P545NCB-25) had the ability to protect against liquid return, I'm I wrong?
Thank you!