Hi guys, I'm a new member so please be easy on me.

I'm new to the industry and looking for some information.

I have a blast freezer bitzer compressor to change out, I'm thinking all I need to do is shut the service valves and recover the vapour inside. Now all i have worked on is recovering R404a in a liquid state, no problem. But now I'm recovering in a vapour state, do I turn the recovery machine on vapour setting and connect my hoses to the liquid valve still on the recovery bottle? (Or vapour) as I'm guessing I want the refrigerant to go into the bottle in a liquid state?

Sorry if this is a stupid question, but I would really like to know the correct method

Thanks in advance