Midea VRF Series

 V6R VRF 50/60Hz 
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Part 6 - Diagnosis and Troubleshooting
Step 8: Vacuum drying and refrigerant charging
 Once all the compressors and other components have been fully connected, vacuum dry the system and recharge
refrigerant.RefertotheV6REngineeringDataBook,Part3.
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Figure 6-2.10: Inspecting compressor oil 
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  


Thisoilisblack
-ithasbeen
carbonized
Thisoilisalittle
yellow,butisclear
andtransparentand
theconditionis
acceptable
Thisoilisstill
transparentbutthere
areimpuritieswhich
mayclogthefilter
Cloudyorgray
oilindicates
abnormal
system
operation
Thisoilcontains
particlesofcopper