Changeing out 40 ton condensers
So i'm changeing out two 40 ton condenser and as always the customer did not want to pay to change the evap coils.
Old unit r-22, new condeser 410. I've done this before on 5 ton and smaller units useing rx-11 to flush and a good triple vac with no problems. But I can't get a comfortable amount of the old oil out even with the flush. Anyone done this before that could give me some advise . I've only got a week to do this and the amount of oil left in the lineset and coil does not give me a warm fuzzy feeling.