Leybold Vacuum Pump RUVAC WAU 1001 EU

Ensure all safety precautions are observed

Use the oil-drain facility for safety and simplicity

Unscrew the oil-drain screws (11/2) or (11/1) and the oil-fill screw (11/4) to drain the oil

Clean the sealing surface and reinstall the oil-drain screw using a gasket in perfect condition

Wipe off any oil residues from the casing

Clean the oil-fill port and reinstall the screw (11/5) using a gasket in perfect condition

Ensure the oil-fill port is sealed air-tight

Ensure all safety precautions from Section 5.1 are followed

Remove the dirt trap from the intake flange

Rinse the dirt trap using a suitable solvent

Thoroughly dry the dirt trap with compressed air

Replace the dirt trap if it is damaged

5.7 Cleaning the Valve of the Pressure Balance Line

Observe all safety information provided in Section 5.1

Remove the screws and take off the cover (12/1) with O-ring (12/2)

Remove the valve disk (12/6) with O-rings (12/5) and (12/7)

Check if the bushing (12/3) is damaged and replace if necessary

Clean all parts or replace them if necessary

Reassemble in the reverse sequence

Check the O-rings for leak-tightness and replace if faulty

5.4 Cleaning the Fan Cowl and the Cooling Fins

Inspect the fan cowl and cooling fins

Check the oil level and condition in the oil level glass and oiler

Correct oil level and condition as required

Verify oil color is light-brown

Note if oil color is dark, indicating early ageing

Check oil level at vertical flow (center of oil-level glass) when pump is not running

Check oil level at horizontal flow (6 mm above center of oil-level glass)

Ensure oil level is not too low or too high