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USE
General
Make all vacuum manifold and electrical connections
and refer to the ion pump instruction manual prior to
operating the MicroVac controller.
The accessory P001 connector should be left in position
including the jumper between pin 3 and 7 if no external
connection has been made.
CAUTION!
Before plugging in the controller power cable, be sure
that the selected operating voltage matches the power
source to avoid equipment damage.
•
Plug the controller power cable into a suitable power
source.
•
Place the ON/OFF switch in the ON position.
•
Monitor the VacIon pump current and the controller
high voltage output by watching the LED lit, then
read the corresponding current and pressure values
•
If only the first LED of the bar graph is lit, the current
drawn by the pump is less than 10 nA and the
voltage output is 3 kV.
•
If the entire bar is lit and the High Load LED is
blinking, this means that the current is higher than
≥1 mA.
Pressure Determination
The bar graph at the left gives the indication of the
pressure into the pump. The left scale is for Mini Pump,
the right one for the 2 l/s pump.
Power Failure
In the event of a power failure (momentary or long
period) the controller is switched off. When power is
restored, the controller will automatically restart.
Remote Control Mode Operation
It is possible to remotely switch on and off the high
voltage using a permanent contact connected to pins 3
and 7 of J001 accessory connector with the mains
power ON/OFF switch to ON.
NOTE
REPLACEMENT
General
Replacement controllers are available on advance
exchange
basis
organization.
•
High voltage in the controller can cause severe
injury or death. Before servicing, turn power off and
remove the power cable.
Troubleshooting
a) No current/voltage LED bar graph lit with mains
power ON but H.V. ON LED off (Mains LED on).
- Verify mains connections and power fuses
- Verify on P001 that pins 3-7 are shorted.
- Verify the H.V. cable interlock
b) Vac Ion pump is operating at High pressure and
only the first LED is lit.
- No high voltage output. Replace the unit.
c) Vac Ion pump operating at Low pressure and all
LED are lit.
- Switch power off and disconnect the high
voltage cable.
- Switch power on and verify that only one LED
lit. If this happens the high voltage cable or
the pump are shorted.
- If not, replace the unit.
ACCESSORIES AND SPARE PARTS
DESCRIPTION
Mating accessory connector
P001
Fuse T1A (5x20 mm)
Rack adapter
Mains cable 120 Vac USA plug
Mains cable 220 Vac European
plug
23
TECHNICAL INFORMATION
through
Varian
service/sales
!
WARNING!
PART NUMBER
03-648487
67.150410-01
969-9191
03-660441-02
03-660441-01
87-900-089-01 (F)
is
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