Leybold Vacuum Pump RUVAC WA 151 US

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 found faulty

5.6 Cleaning the Pumping Chamber

Observe all safety information provided in Section 5.1

Remove the two connecting lines

Blow out contaminants with dry compressed air or flush out with a suitable solvent

Remove stubborn contaminants with a wire brush, metallic sponge, or scraper

Check the pump by slowly turning the impellers by hand

Ensure impellers move freely and without any resistance

Pressure Balance Line Valve Cleaning — RUVAC WAU Only

Check the oil level in the oil level glass

Check the condition of the oil in the oil level glass

Check the oil level in the oiler

Check the condition of the oil in the oiler

Is the oil light-brown in color?

Is the oil level correct as per Section 5.2 and 5.3?

Check the oil level at vertical flow when the pump is not running

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

Consult Sections 1.3 and 1.4 for oil quantities and ordering data

Ensure correct oil type is used

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