I've been given an opportunity to purchase some second-hand VRV equipment that I am very interested in installing in my home. The equipment is out of a small office building that houses the vendor of the equipment. They recently changed lines to a new VRF manufacturer, and so they are ripping out and selling all of their old equipment. It's in decent shape, not terribly old, and would permit me to replace an aging system in my home and also do some much needed zoning because the house has had an addition by the previous owner without accounting for the fact that the air conditioner would need to be upsized. The equipment is priced for what it would cost for me to buy a bare-bones system. Probably cheaper, actually.
To my point: when this equipment was removed, they did not cap the refrigerant lines on the outdoor heat pump. This is a R-410A machine with POE oil. It has been sitting like this is steamy Kansas City for over a week. I am very concerned that the oil in this VERY expensive compressor is already ruined. Would you agree?
I'm also of the impression that the only "fix" would be dump the oil out of the compressor and fill it with new, and that the entire system would need a pretty significant nitrogen purge and have a vacuum sit on it for a long, long time. Like days. My understanding of POE is that it simply isn't forgiving in this regard and that pulling a vacuum on it for a lengthy period of time still will not pull the moisture out of the compressor unless I do a complete oil change-out.
Do you agree?
For me, the uncapped lines are a deal-breaker, but I wanted a second opinion to see if I was blowing this out of proportion. I really don't want to turn down this high-dollar equipment, but I don't want to tear it apart and rebuild it just to make it work, either.