Leybold Vacuum Pump TRIVAC D 65 B 113 56

Check the quality of the oil visually

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?

Refer to Section 3.8.1 for disposal of waste oil

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)

3.7 Removing and Remounting the Pump Module

Ensure all required tools are available

Ensure all required spare parts are available

Drain the oil and remove the oil case (see Section 3.4)

Pull the entire pump module (13/2) forward off the tie rods (13/5)

Ensure individual pin-fitted parts are not loosened

Switch off the pump and ensure it is still warm

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

Store the pump in a dry place at room temperature (20 °C)

Properly disconnect the pump from the vacuum system

Purge the pump with dry nitrogen

Seal the inlets and outlets with shipping seals

Set the gas ballast switch to the '0' position

Seal the pump in a PE bag with desiccant if shelved for a long period

Has the pump been shelved for over one year?