Procedure
1. If required, switch the vacuum pump off in each pressure range.
2. Switch the mains switch off or securely disconnect the drive motor from the mains.
–
The vacuum safety valve closes automatically when the vacuum pump is switched off, pre-
venting the backflow of gas and operating fluid into the intake line.
3. Install an additional shut-off valve in the intake line to ensure that the vacuum is maintained in the
vacuum chamber.
Operation
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