6mbar Probably 16m3 (illegible sign)

4mbar Missing air filter

1000m3/h

2 mbar Faulty connection but works fine. See image for more information

18mbar 100m3/h

11 mbar Unreadable sign probably a 100 m3/h

100 m3 6mbar New oil Needs new filters

100 cm3 2mbar

Change oil and filter 10mbar 100 cubic