VACUUBRAND PC 3012 VARIO plastic housing - Manual (Page 72)

page 72 of 129
Using the pump NT VARIO as fore-vacuum pump (also know as a ”rough-
ing pump” or ”backing pump”) for a high vacuum pump (e.g. turbo-molec-
ular with high fore-vacuum tolerance):
+
Use ”Pump down” function with ”Speed” set to ”HI” or
+
Use ”Vac control” function with ”Set vacuum” set to ”Turbo”.
Fore-vacuum for high vacuum pumps