NOTICE
Risk of damage due to the use of non-approved operating fluid
Product-specific performance data are not achieved. All liability and warranty claims against Pfeiffer
Vacuum are also excluded.
► Only use approved operating fluids.
► Only use other application-specific operating fluids after consultation with Pfeiffer Vacuum.
Operating fluid type
Fundamentally, when filling, refilling, or changing operating fluid, you must always use the
operating fluid type specified on the rating plate.
Approved operating fluid
● VSI 100 (standard operating fluid)
● A 113 (operating fluid for processes with increased oxygen content)
Required consumable material
● Operating fluid
Required aids
● Funnel (optional)
1
2
3
Fig. 6:
Filling the operating fluid
1 Filler screw
3
Sight glass
2 O-ring
Filling the operating fluid
1. Unscrew the filler screw.
2. Fill the operating fluid according to the sight glass:
3. Screw in the filler screw again.
– Be careful with the O-ring.
4. Seal the vacuum connection.
5. Start the vacuum pump.
6. Operate the vacuum pump for approx. 5 minutes.
7. Switch off the vacuum pump.
8. Wait approx. 1 minute until the operating fluid has accumulated in the operating fluid separator.
9. Check the fill level.
– The correct fill level is between the Min/Max markings or within the ring mark on the sight
glass.
10. If necessary, fill more operating fluid in case the fill level is incorrect.
Installation
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