Required consumable material
● Operating fluid
Required tools
● Open-end wrench,
WAF 27
● Ring spanner,
WAF 30
Required aids
● Collection receptacle (> 7 l)
Max
Min
4/(5)
1/(2)
3
Fig. 16:
Draining the operating fluid
1 Filler screw with manometer
4
Drain screw
2 O-ring
5
O-ring
3 Sight glass
Draining the operating fluid
1. Unscrew the filler screw.
– Be careful with the O-ring.
2. Place a collection receptacle below the drain hole.
3. Unscrew the drain screw.
– Be careful with the O-ring.
4. Allow operating fluid to drain into collection receptacle.
Filling fresh operating fluid
1. Screw in the drain screw.
– Be careful with the O-ring.
2. Fill new operating fluid.
3. Check level.
4. Screw in the filler screw.
– Be careful with the O-ring.
7.3.3 Rinsing and cleaning the rotary vane vacuum pump
Cleaning by changing the operating fluid
Pfeiffer Vacuum recommends, in cases of heavy contamination with process residues,
cleaning the inside of the vacuum pump with several operating fluid changes.
Required consumable material
● Operating fluid
● Maintenance set level 1
Maintenance
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