Really nice M4 from 2014 that has received a new mesh filter. This machine is not double-jacketed. Works without complaint

New connection Replaced air filter 2mbar

5 mbar Missing nameplate

2mbar Unknown model since type plate is missing

6mbar Probably 16m3 (illegible sign)

3mbar

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