The frequency of replacing vacuum pump filters depends on several factors, including the type of vacuum pump, the operating conditions, the level of contamination, and the specific recommendations of the manufacturer.
As a general guideline,
Check the filter regularly during use,
it when needed based on visual inspection.
If the filter becomes dirty, clogged or damaged,
it should be replaced immediately to ensure proper functioning of the vacuum pump and avoid damage to the system.
However, for specific guidelines, you should refer to the instructions provided by the manufacturer of your particular vacuum pump model. They will have detailed information about how often to replace the filter and what type of filter to use for optimal performance and longevity.