User manual

Technical Information

Operation

MiniVac Controller User Manual / 87-900-049-01 (H) 61/70

Operation

Make all vacuum manifold and electrical connections and refer to the

ion pump instruction manual prior to operating the MiniVac

controller.

NOTE

The accessory P001 connector should be left in position including the jumper

between pin 3 and 7 if no external connection has been made.

For small ion pumps, up to 8 l/s:

with a roughing pump,

establish a rough pressure suitable to start the ion pump.

For medium ion pump (20 l/s to 60 l/s):

establish a pressure lower than 10

-5

mbar/ Torr.

For large ion pumps (120 l/s to 400 l/s):

establish a pressure lower than 2 x 10

-6

mbar/Torr.

CAUTION!

Before plugging in the controller power cable, be sure that the selected

operating voltage matches the power source to avoid equipment damage.

1. Plug the controller power cable into a suitable power source.

2. Place the ON/OFF switch in the ON position.

3. Monitor the VacIon pump current and the controller high voltage

output by watching the LED lit, then read the corresponding

current/voltage value (e.g.: if the third LED is increasing its

brightness it means that the pump current is between 2 and 3 mA

and the high voltage output is between 5 and 4 kV).

4. If only the first LED of the bar graph is lit, the current drawn by

the pump is less than 1 mA and the voltage output is 5 kV.

5. If ten LEDs are lit, the current drawn by the pump is 10 mA and

the voltage output is 2 kV.

6. For the correct determination of the voltage value, use the

voltage vs current diagram shown in the figure “MiniVac

Controller Rear Panel Controls”.