Leybold Vacuum Pump TRIVAC D 40 B 113 45

Visually inspect the oil quality

Is an oil change required based on visual inspection?

Enter the neutralisation number according to DIN 51558

Is an oil change required based on chemical analysis?

Enter the dynamic viscosity at 25 °C

Is an oil change required based on mechanical analysis?

Dispose of waste oil according to Section 3.8.1

3.4 Removing and Fitting the Internal Demister

Ensure all required tools and spare parts are available

Shutdown the pump and drain the oil (see Section 3.2)

Remove the six recessed screws (10/6) on the oil case (10/4)

Pull the oil case forward off the pump

Lift off the frame (10/2) and remove the internal demister (10/3)

Clean all parts and check their condition

Ensure all required tools and spare parts are available

Drain the oil (see Section 3.2)

Unscrew the four non-recessed hex. socket screws (11/5) and remove the motor (11/6)

Unscrew screw (12/2) and pull off the spring washer (12/3)

Check if the oil level is between marks (9/2) and (9/3) at the oil-level glass.

Select the type of oil used for refill.

Ensure the pump is switched off before refilling.

Ensure pump is switched off and warm before changing oil

Determine hazard and ensure safety precautions if oil decomposition is suspected

Remove the oil-drain plug (9/4) and let the used oil drain into a suitable container

Screw the oil-drain plug back in, briefly switch on the pump (max. 10 s) and then switch it off again

Remove the oil-drain plug once more and drain out the remaining oil

Check the gasket and reinstall a new one if necessary

Screw the oil-drain plug back in

Remove the oil-fill plug (9/1) and fill in with fresh oil