2
1
Fig. 17:
Replacing the sealing oil for radial shaft seal rings
1
Oiler
2
Sealing oil drain screw
Consumable
● Lubricant
Required tools
● Open-end wrench, WAF 24
● Calibrated torque wrench (tightening factor ≤ 2.5)
Overfilling the oiler
The lubricant expands when the roots pump heats up, which could cause lubricant
to leak if overfilled.
Oiler fill level with roots pump in cold state: to max. halfway.
Procedure for changing sealing oil
1. Open the filler flap on the oiler.
2. Place the collection receptacle underneath.
3. Unscrew the sealing oil drain screw.
4. Fully drain the lubricant.
5. Screw in the drain screw.
– Tightening torque:
max. 50 Nm
6. Fill the oiler with lubricant to max. halfway.
7. Close the filler flap.
7.5 Checking and changing the sealing medium of the axial face seal
The change intervals for the sealing medium depend on the design of the axial face seal, and the re-
spective operating conditions of the roots pump.
Maintenance
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