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Fore-vacuum for high vacuum pumps – VACUUBRAND PC 3012 NT VARIO Duo User Manual

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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