How I should do to recovery oil in a new NH3 installation ( automatic system )

I kindly ask you for technical information about the options that we could have to recovery oil in a new NH3 installation ( automatic system )

I will be really appreciate if you could let me know the options availables.

Best regards,

Fernando

Can you give us more information on the system; compressor type, what kind of defrost you use. The more information you give us the better off you will be.

Can you turn on your private messaging option if you have it.

Think of the process required to do this manually. Then all you have to is automate the same process.