Samsung VRF Pump Down

[Steven_AC]

So tomorrow i'm being sent to a site to remove a cassette from a Samsung VRF on R407c (not been giving any model details or if its 2/3 pipe system)

So my question is how do you pump down as much refrigerant as possible into the condenser? i know i wont be able to pump it all the way down. Is there a pump down button by any chance and obviously you shut the liquid line service valve do you then shut the suction and discharge lines when the suction starts to come back a bit lower or start with the liquid and discharge valves closed?

I've never worked on a samsung unit before, is there an option for opening solenoid valves if theres BC boxes on a 3 pipe system or just recover from both sides of the system?

thanks in advance

[Steven_AC]

My mistake was a Sanyo System. Managed to pump it down and only had to recover 2kg from the pipe work happy days! :)