Required tools
● Allen key
● Calibrated torque wrench (tightening factor ≤ 1.6)
5
1
2
3
4
Fig. 22:
Operating fluid change with rotary vane pump as backing pump
1 Drain screw
4
Filler screw
2 Sight glass
5
Drain channel
3 Backing pump
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.
Agitate remaining operating fluid
1. Screw in the filler screw.
– Be careful with the O-ring.
2. Screw in the drain screw.
– Be careful with the O-ring.
3. Switch on the vacuum pump with the vacuum flange open for a maximum of 5 seconds.
Drain remaining operating fluid
1. Unscrew the drain screw.
– Be careful with the O-ring.
2. Gently tilt the vacuum pump.
3. Drain remaining operating fluid.
4. Screw in the drain screw.
– Replace the O-ring.
– Tightening torque:
6 Nm
5. Dispose of old operating fluid according to applicable regulations.
Fill fresh operating fluid
1. Screw the drain screw in finally.
– Be careful with the O-ring.
2. Observe the permissible tightening torque according to the operating instructions of the individual
components.
3. Fill new operating fluid.
4. Check level.
5. Screw the drain screw in completely.
– Be careful with the O-ring.
6. Observe the permissible tightening torque according to the operating instructions of the individual
components.
Maintenance
47/80
