evocarlos- if your going to vacuum with it too try to use a powerful rotary, two is a lot better then 1 for vacuuming.

xeon- oil sep on suction side, brings the oil back to where? the system being evacuated or...? im real tired atm so please forgive but if you use a decent oil sep, why should you only use it with 1 refrigerant? if you use a rotary, but use a oil sep, will it be OK for evacuations of HFC's?

ive been wanting to build a similar thing evocarlos (but minus the vacuum pump ) for reclamation but also for "cleaning" the refrigerant a bit (taking oil out). mainly because i have a couple blissfields, rechi's, and 2 cheapo floated oil seps