GREE                        Photovoltaic Direct-driven Inverter Multi VRF Units 
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source to the inlet/outlet pipe. If the pipe is big, cover it  with tape as well. Make sure nitrogen can 
smoothly flow through the gas separator.   
 
Step 11: Check/Replace oil balancer 
The original oil balancer, if is found to have no impurity or other objects, can continue to be used. 
This part serves as a container and it does not have complex structure. However, if it contains impurities 
or other objects, replace it. This is because a dirty oil balancer cannot be thoroughly cleaned.