Gardner Denver Vacuum Pump 1399B-01

Remove screws securing the old seal

Pry the old seal loose with a screwdriver or similar wedge

Discard the old seal and its gasket

Inspect all surfaces for damage

Has the oil changed in color or level?

Change the oil if changes are observed

Extended Service Life Recommendation

Is it time for the scheduled oil change?

Oil Level Check and Initial Actions

Is the oil level above the fill mark?

Is the oil level even with the fill mark and no contaminants suspected?

Run the pump for 15 minutes to warm up the oil

Turn off motor for the vacuum pump

Drain the oil into a clear plastic container

Are there contaminants settling at the bottom of the container?

Check the refrigerant level in the flask

Is the refrigerant add tube unobstructed?

Has the pressure in the vacuum system increased?

Disconnect the trap from the system

Rinse off the condensate with a suitable solvent in a fume hood