How to Replacement Oil on VRV III

[kal-el]

Dear all,

I just wanna know, how to replace the oil from VRV Outdoor Unit?? Because my unit (VRV III) have been ran from 2011 and until now the unit still running well. And I think it will be good idea if I replace the oil.

Thank's alot before.

[martinw58]

there is no drain on the oil for the compressors

[hyperion]

Unless you have had a compressor failure or several compressor failures where you have now got contaminated oil, what criteria are you using to determine that you need to change the oil? To remove most of the oil would require the disconnecting of the compressors, draining the oil out of them and then replenishing with the same quantity of the correct grade of oil. You still may not get all of the oil out of the parts of the circuit.
This will be a very time consuming and costly operation which could potentially cause more long term operational problems if you get contaminants into the system during the work.